./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix009.oepc.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix009.oepc.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/mix009.oepc.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix009.oepc.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-28 02:56:36,261 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 02:56:36,301 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 02:56:36,305 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 02:56:36,305 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 02:56:36,320 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 02:56:36,320 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 02:56:36,327 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 02:56:36,328 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 02:56:36,328 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 02:56:36,329 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 02:56:36,329 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 02:56:36,329 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 02:56:36,329 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 02:56:36,330 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 02:56:36,330 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 02:56:36,330 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 02:56:36,330 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 02:56:36,331 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 02:56:36,331 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 02:56:36,331 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 02:56:36,332 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 02:56:36,332 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 02:56:36,332 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 02:56:36,332 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 02:56:36,333 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 02:56:36,333 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 02:56:36,336 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 02:56:36,336 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 02:56:36,337 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 02:56:36,337 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 02:56:36,337 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 02:56:36,337 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 02:56:36,338 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 02:56:36,338 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 02:56:36,338 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 02:56:36,338 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 02:56:36,338 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 02:56:36,339 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 02:56:36,339 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 02:56:36,339 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 02:56:36,339 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 02:56:36,339 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 02:56:36,340 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-28 02:56:36,501 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 02:56:36,530 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 02:56:36,532 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 02:56:36,532 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 02:56:36,533 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 02:56:36,534 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix009.oepc.i [2024-06-28 02:56:37,658 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 02:56:37,852 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 02:56:37,853 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix009.oepc.i [2024-06-28 02:56:37,867 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a700dff7e/28cf8da0c7f24e89ba0af20758f44b30/FLAG8b5c6bb4a [2024-06-28 02:56:37,879 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a700dff7e/28cf8da0c7f24e89ba0af20758f44b30 [2024-06-28 02:56:37,881 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 02:56:37,881 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 02:56:37,882 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix009.oepc.yml/witness.yml [2024-06-28 02:56:37,989 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 02:56:37,991 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 02:56:37,992 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 02:56:37,992 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 02:56:37,996 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 02:56:37,996 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 02:56:37" (1/2) ... [2024-06-28 02:56:37,997 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40ce6406 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:56:37, skipping insertion in model container [2024-06-28 02:56:37,998 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 02:56:37" (1/2) ... [2024-06-28 02:56:37,999 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5927cfa9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:56:37, skipping insertion in model container [2024-06-28 02:56:37,999 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 02:56:37" (2/2) ... [2024-06-28 02:56:38,000 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40ce6406 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:56:37, skipping insertion in model container [2024-06-28 02:56:38,000 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 02:56:37" (2/2) ... [2024-06-28 02:56:38,000 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 02:56:38,056 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 02:56:38,057 INFO L97 edCorrectnessWitness]: Location invariant before [L825-L825] (((((((((((((((((! multithreaded || z$r_buff0_thd2 == (_Bool)0) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || (z$mem_tmp == 0 || z$mem_tmp == 1))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || (((((((((((((((((0 <= __unbuffered_cnt && z$flush_delayed == (_Bool)0) && z$r_buff0_thd0 == (_Bool)0) && z$r_buff0_thd2 == (_Bool)0) && z$r_buff1_thd0 == (_Bool)0) && z$r_buff1_thd2 == (_Bool)0) && z$read_delayed == (_Bool)0) && z$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (z == 0 || z == 1)) && (z$mem_tmp == 0 || z$mem_tmp == 1)) && (z$w_buff0 == 0 || z$w_buff0 == 1)) && (z$w_buff1 == 0 || z$w_buff1 == 1)))) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (z$w_buff0 == 0 || z$w_buff0 == 1))) && (! multithreaded || (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1))) && (! multithreaded || (z$w_buff1 == 0 || z$w_buff1 == 1))) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || 0 <= __unbuffered_cnt) [2024-06-28 02:56:38,057 INFO L97 edCorrectnessWitness]: Location invariant before [L826-L826] (((((((((((((((((! multithreaded || z$r_buff0_thd2 == (_Bool)0) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || (z$mem_tmp == 0 || z$mem_tmp == 1))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || (((((((((((((((((0 <= __unbuffered_cnt && z$flush_delayed == (_Bool)0) && z$r_buff0_thd0 == (_Bool)0) && z$r_buff0_thd2 == (_Bool)0) && z$r_buff1_thd0 == (_Bool)0) && z$r_buff1_thd2 == (_Bool)0) && z$read_delayed == (_Bool)0) && z$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (z == 0 || z == 1)) && (z$mem_tmp == 0 || z$mem_tmp == 1)) && (z$w_buff0 == 0 || z$w_buff0 == 1)) && (z$w_buff1 == 0 || z$w_buff1 == 1)))) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (z$w_buff0 == 0 || z$w_buff0 == 1))) && (! multithreaded || (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1))) && (! multithreaded || (z$w_buff1 == 0 || z$w_buff1 == 1))) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || 0 <= __unbuffered_cnt) [2024-06-28 02:56:38,058 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 02:56:38,058 INFO L106 edCorrectnessWitness]: ghost_update [L823-L823] multithreaded = 1; [2024-06-28 02:56:38,100 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 02:56:38,421 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 02:56:38,431 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 02:56:38,597 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 02:56:38,631 INFO L206 MainTranslator]: Completed translation [2024-06-28 02:56:38,632 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:56:38 WrapperNode [2024-06-28 02:56:38,632 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 02:56:38,633 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 02:56:38,633 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 02:56:38,633 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 02:56:38,640 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:56:38" (1/1) ... [2024-06-28 02:56:38,664 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:56:38" (1/1) ... [2024-06-28 02:56:38,689 INFO L138 Inliner]: procedures = 174, calls = 40, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 122 [2024-06-28 02:56:38,690 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 02:56:38,691 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 02:56:38,691 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 02:56:38,691 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 02:56:38,721 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:56:38" (1/1) ... [2024-06-28 02:56:38,721 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:56:38" (1/1) ... [2024-06-28 02:56:38,724 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:56:38" (1/1) ... [2024-06-28 02:56:38,736 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-28 02:56:38,737 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:56:38" (1/1) ... [2024-06-28 02:56:38,737 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:56:38" (1/1) ... [2024-06-28 02:56:38,743 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:56:38" (1/1) ... [2024-06-28 02:56:38,744 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:56:38" (1/1) ... [2024-06-28 02:56:38,746 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:56:38" (1/1) ... [2024-06-28 02:56:38,747 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:56:38" (1/1) ... [2024-06-28 02:56:38,751 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 02:56:38,752 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 02:56:38,752 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 02:56:38,752 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 02:56:38,753 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:56:38" (1/1) ... [2024-06-28 02:56:38,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 02:56:38,765 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 02:56:38,782 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-28 02:56:38,790 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-28 02:56:38,818 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 02:56:38,818 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 02:56:38,819 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 02:56:38,819 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 02:56:38,819 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 02:56:38,819 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 02:56:38,819 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 02:56:38,819 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 02:56:38,819 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 02:56:38,820 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 02:56:38,821 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-28 02:56:38,919 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 02:56:38,921 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 02:56:39,183 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 02:56:39,183 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 02:56:39,309 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 02:56:39,309 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 02:56:39,311 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 02:56:39 BoogieIcfgContainer [2024-06-28 02:56:39,312 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 02:56:39,314 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 02:56:39,314 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 02:56:39,316 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 02:56:39,316 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 02:56:37" (1/4) ... [2024-06-28 02:56:39,321 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@437a5cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 02:56:39, skipping insertion in model container [2024-06-28 02:56:39,321 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 02:56:37" (2/4) ... [2024-06-28 02:56:39,321 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@437a5cf and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 02:56:39, skipping insertion in model container [2024-06-28 02:56:39,321 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:56:38" (3/4) ... [2024-06-28 02:56:39,321 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@437a5cf and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 02:56:39, skipping insertion in model container [2024-06-28 02:56:39,321 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 02:56:39" (4/4) ... [2024-06-28 02:56:39,322 INFO L112 eAbstractionObserver]: Analyzing ICFG mix009.oepc.i [2024-06-28 02:56:39,335 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 02:56:39,336 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-28 02:56:39,336 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 02:56:39,368 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 02:56:39,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 39 places, 32 transitions, 72 flow [2024-06-28 02:56:39,438 INFO L124 PetriNetUnfolderBase]: 0/30 cut-off events. [2024-06-28 02:56:39,438 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 02:56:39,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37 conditions, 30 events. 0/30 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 47 event pairs, 0 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-28 02:56:39,440 INFO L82 GeneralOperation]: Start removeDead. Operand has 39 places, 32 transitions, 72 flow [2024-06-28 02:56:39,443 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 31 places, 24 transitions, 54 flow [2024-06-28 02:56:39,454 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 02:56:39,461 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6e438286, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 02:56:39,462 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-28 02:56:39,464 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 02:56:39,464 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-28 02:56:39,464 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 02:56:39,465 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:56:39,465 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 02:56:39,465 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:56:39,470 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:56:39,471 INFO L85 PathProgramCache]: Analyzing trace with hash 337095837, now seen corresponding path program 1 times [2024-06-28 02:56:39,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:56:39,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842859873] [2024-06-28 02:56:39,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:56:39,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:56:39,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:56:40,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:56:40,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:56:40,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842859873] [2024-06-28 02:56:40,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842859873] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:56:40,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:56:40,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 02:56:40,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834596303] [2024-06-28 02:56:40,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:56:40,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 02:56:40,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:56:40,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 02:56:40,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 02:56:40,302 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2024-06-28 02:56:40,305 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 24 transitions, 54 flow. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:56:40,305 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:56:40,305 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2024-06-28 02:56:40,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:56:40,422 INFO L124 PetriNetUnfolderBase]: 162/314 cut-off events. [2024-06-28 02:56:40,423 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-06-28 02:56:40,425 INFO L83 FinitePrefix]: Finished finitePrefix Result has 625 conditions, 314 events. 162/314 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1238 event pairs, 97 based on Foata normal form. 1/305 useless extension candidates. Maximal degree in co-relation 614. Up to 288 conditions per place. [2024-06-28 02:56:40,428 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 21 selfloop transitions, 3 changer transitions 0/30 dead transitions. [2024-06-28 02:56:40,428 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 30 transitions, 117 flow [2024-06-28 02:56:40,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 02:56:40,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 02:56:40,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 59 transitions. [2024-06-28 02:56:40,438 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6145833333333334 [2024-06-28 02:56:40,439 INFO L175 Difference]: Start difference. First operand has 31 places, 24 transitions, 54 flow. Second operand 3 states and 59 transitions. [2024-06-28 02:56:40,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 30 transitions, 117 flow [2024-06-28 02:56:40,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 30 transitions, 114 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-28 02:56:40,442 INFO L231 Difference]: Finished difference. Result has 32 places, 26 transitions, 73 flow [2024-06-28 02:56:40,444 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=73, PETRI_PLACES=32, PETRI_TRANSITIONS=26} [2024-06-28 02:56:40,446 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 1 predicate places. [2024-06-28 02:56:40,446 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 26 transitions, 73 flow [2024-06-28 02:56:40,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:56:40,447 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:56:40,447 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:56:40,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 02:56:40,447 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:56:40,447 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:56:40,448 INFO L85 PathProgramCache]: Analyzing trace with hash 1826570300, now seen corresponding path program 1 times [2024-06-28 02:56:40,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:56:40,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119119364] [2024-06-28 02:56:40,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:56:40,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:56:40,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:56:40,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:56:40,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:56:40,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119119364] [2024-06-28 02:56:40,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119119364] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:56:40,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:56:40,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 02:56:40,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941844849] [2024-06-28 02:56:40,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:56:40,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 02:56:40,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:56:40,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 02:56:40,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-28 02:56:40,992 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2024-06-28 02:56:40,993 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 26 transitions, 73 flow. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:56:40,993 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:56:40,993 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2024-06-28 02:56:40,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:56:41,090 INFO L124 PetriNetUnfolderBase]: 159/309 cut-off events. [2024-06-28 02:56:41,091 INFO L125 PetriNetUnfolderBase]: For 62/62 co-relation queries the response was YES. [2024-06-28 02:56:41,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 697 conditions, 309 events. 159/309 cut-off events. For 62/62 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1225 event pairs, 79 based on Foata normal form. 2/306 useless extension candidates. Maximal degree in co-relation 685. Up to 274 conditions per place. [2024-06-28 02:56:41,093 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 25 selfloop transitions, 5 changer transitions 0/36 dead transitions. [2024-06-28 02:56:41,094 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 36 transitions, 159 flow [2024-06-28 02:56:41,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 02:56:41,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 02:56:41,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 76 transitions. [2024-06-28 02:56:41,095 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.59375 [2024-06-28 02:56:41,095 INFO L175 Difference]: Start difference. First operand has 32 places, 26 transitions, 73 flow. Second operand 4 states and 76 transitions. [2024-06-28 02:56:41,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 36 transitions, 159 flow [2024-06-28 02:56:41,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 36 transitions, 156 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 02:56:41,097 INFO L231 Difference]: Finished difference. Result has 35 places, 28 transitions, 97 flow [2024-06-28 02:56:41,097 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=97, PETRI_PLACES=35, PETRI_TRANSITIONS=28} [2024-06-28 02:56:41,098 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 4 predicate places. [2024-06-28 02:56:41,098 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 28 transitions, 97 flow [2024-06-28 02:56:41,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:56:41,098 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:56:41,099 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:56:41,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 02:56:41,099 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:56:41,099 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:56:41,100 INFO L85 PathProgramCache]: Analyzing trace with hash 789105080, now seen corresponding path program 1 times [2024-06-28 02:56:41,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:56:41,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617861339] [2024-06-28 02:56:41,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:56:41,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:56:41,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:56:41,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:56:41,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:56:41,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617861339] [2024-06-28 02:56:41,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617861339] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:56:41,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:56:41,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 02:56:41,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011049764] [2024-06-28 02:56:41,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:56:41,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 02:56:41,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:56:41,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 02:56:41,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-28 02:56:41,561 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 32 [2024-06-28 02:56:41,562 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 28 transitions, 97 flow. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:56:41,562 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:56:41,562 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 32 [2024-06-28 02:56:41,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:56:41,640 INFO L124 PetriNetUnfolderBase]: 187/359 cut-off events. [2024-06-28 02:56:41,641 INFO L125 PetriNetUnfolderBase]: For 204/204 co-relation queries the response was YES. [2024-06-28 02:56:41,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 892 conditions, 359 events. 187/359 cut-off events. For 204/204 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1389 event pairs, 83 based on Foata normal form. 2/360 useless extension candidates. Maximal degree in co-relation 878. Up to 313 conditions per place. [2024-06-28 02:56:41,643 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 30 selfloop transitions, 7 changer transitions 0/42 dead transitions. [2024-06-28 02:56:41,643 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 42 transitions, 209 flow [2024-06-28 02:56:41,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 02:56:41,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 02:56:41,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 89 transitions. [2024-06-28 02:56:41,645 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.55625 [2024-06-28 02:56:41,645 INFO L175 Difference]: Start difference. First operand has 35 places, 28 transitions, 97 flow. Second operand 5 states and 89 transitions. [2024-06-28 02:56:41,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 42 transitions, 209 flow [2024-06-28 02:56:41,646 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 42 transitions, 200 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-28 02:56:41,647 INFO L231 Difference]: Finished difference. Result has 38 places, 30 transitions, 121 flow [2024-06-28 02:56:41,647 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=121, PETRI_PLACES=38, PETRI_TRANSITIONS=30} [2024-06-28 02:56:41,647 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 7 predicate places. [2024-06-28 02:56:41,647 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 30 transitions, 121 flow [2024-06-28 02:56:41,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:56:41,648 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:56:41,648 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:56:41,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 02:56:41,648 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:56:41,649 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:56:41,649 INFO L85 PathProgramCache]: Analyzing trace with hash -670316147, now seen corresponding path program 1 times [2024-06-28 02:56:41,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:56:41,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633380945] [2024-06-28 02:56:41,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:56:41,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:56:41,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:56:42,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:56:42,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:56:42,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633380945] [2024-06-28 02:56:42,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633380945] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:56:42,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:56:42,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 02:56:42,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112503378] [2024-06-28 02:56:42,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:56:42,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 02:56:42,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:56:42,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 02:56:42,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-28 02:56:42,277 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 32 [2024-06-28 02:56:42,277 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 30 transitions, 121 flow. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:56:42,278 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:56:42,278 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 32 [2024-06-28 02:56:42,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:56:42,373 INFO L124 PetriNetUnfolderBase]: 184/356 cut-off events. [2024-06-28 02:56:42,373 INFO L125 PetriNetUnfolderBase]: For 341/341 co-relation queries the response was YES. [2024-06-28 02:56:42,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 963 conditions, 356 events. 184/356 cut-off events. For 341/341 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1370 event pairs, 65 based on Foata normal form. 2/357 useless extension candidates. Maximal degree in co-relation 948. Up to 299 conditions per place. [2024-06-28 02:56:42,376 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 34 selfloop transitions, 9 changer transitions 0/48 dead transitions. [2024-06-28 02:56:42,376 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 48 transitions, 257 flow [2024-06-28 02:56:42,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:56:42,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:56:42,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 105 transitions. [2024-06-28 02:56:42,377 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.546875 [2024-06-28 02:56:42,377 INFO L175 Difference]: Start difference. First operand has 38 places, 30 transitions, 121 flow. Second operand 6 states and 105 transitions. [2024-06-28 02:56:42,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 48 transitions, 257 flow [2024-06-28 02:56:42,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 48 transitions, 242 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-28 02:56:42,380 INFO L231 Difference]: Finished difference. Result has 41 places, 32 transitions, 145 flow [2024-06-28 02:56:42,380 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=145, PETRI_PLACES=41, PETRI_TRANSITIONS=32} [2024-06-28 02:56:42,380 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 10 predicate places. [2024-06-28 02:56:42,381 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 32 transitions, 145 flow [2024-06-28 02:56:42,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:56:42,381 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:56:42,381 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:56:42,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 02:56:42,381 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:56:42,382 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:56:42,382 INFO L85 PathProgramCache]: Analyzing trace with hash -2063748116, now seen corresponding path program 1 times [2024-06-28 02:56:42,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:56:42,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961245070] [2024-06-28 02:56:42,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:56:42,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:56:42,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:56:42,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:56:42,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:56:42,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961245070] [2024-06-28 02:56:42,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961245070] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:56:42,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:56:42,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 02:56:42,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946237653] [2024-06-28 02:56:42,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:56:42,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 02:56:42,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:56:42,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 02:56:42,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-28 02:56:42,922 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 02:56:42,923 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 32 transitions, 145 flow. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:56:42,923 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:56:42,923 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 02:56:42,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:56:43,112 INFO L124 PetriNetUnfolderBase]: 230/423 cut-off events. [2024-06-28 02:56:43,113 INFO L125 PetriNetUnfolderBase]: For 639/639 co-relation queries the response was YES. [2024-06-28 02:56:43,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1247 conditions, 423 events. 230/423 cut-off events. For 639/639 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1590 event pairs, 100 based on Foata normal form. 1/423 useless extension candidates. Maximal degree in co-relation 1230. Up to 402 conditions per place. [2024-06-28 02:56:43,115 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 29 selfloop transitions, 6 changer transitions 0/39 dead transitions. [2024-06-28 02:56:43,115 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 39 transitions, 233 flow [2024-06-28 02:56:43,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 02:56:43,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 02:56:43,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 66 transitions. [2024-06-28 02:56:43,116 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4125 [2024-06-28 02:56:43,116 INFO L175 Difference]: Start difference. First operand has 41 places, 32 transitions, 145 flow. Second operand 5 states and 66 transitions. [2024-06-28 02:56:43,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 39 transitions, 233 flow [2024-06-28 02:56:43,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 39 transitions, 212 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-28 02:56:43,118 INFO L231 Difference]: Finished difference. Result has 42 places, 34 transitions, 151 flow [2024-06-28 02:56:43,118 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=151, PETRI_PLACES=42, PETRI_TRANSITIONS=34} [2024-06-28 02:56:43,119 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 11 predicate places. [2024-06-28 02:56:43,119 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 34 transitions, 151 flow [2024-06-28 02:56:43,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:56:43,119 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:56:43,119 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:56:43,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 02:56:43,120 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:56:43,120 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:56:43,120 INFO L85 PathProgramCache]: Analyzing trace with hash 1874082682, now seen corresponding path program 1 times [2024-06-28 02:56:43,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:56:43,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710346571] [2024-06-28 02:56:43,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:56:43,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:56:43,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:56:43,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:56:43,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:56:43,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710346571] [2024-06-28 02:56:43,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710346571] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:56:43,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:56:43,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:56:43,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117802947] [2024-06-28 02:56:43,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:56:43,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:56:43,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:56:43,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:56:43,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:56:44,076 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-28 02:56:44,077 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 34 transitions, 151 flow. Second operand has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:56:44,077 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:56:44,077 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-28 02:56:44,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:56:44,222 INFO L124 PetriNetUnfolderBase]: 223/414 cut-off events. [2024-06-28 02:56:44,222 INFO L125 PetriNetUnfolderBase]: For 887/887 co-relation queries the response was YES. [2024-06-28 02:56:44,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1277 conditions, 414 events. 223/414 cut-off events. For 887/887 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1557 event pairs, 58 based on Foata normal form. 2/415 useless extension candidates. Maximal degree in co-relation 1259. Up to 338 conditions per place. [2024-06-28 02:56:44,224 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 44 selfloop transitions, 13 changer transitions 0/62 dead transitions. [2024-06-28 02:56:44,225 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 62 transitions, 343 flow [2024-06-28 02:56:44,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:56:44,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:56:44,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 130 transitions. [2024-06-28 02:56:44,226 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5078125 [2024-06-28 02:56:44,226 INFO L175 Difference]: Start difference. First operand has 42 places, 34 transitions, 151 flow. Second operand 8 states and 130 transitions. [2024-06-28 02:56:44,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 62 transitions, 343 flow [2024-06-28 02:56:44,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 62 transitions, 332 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-28 02:56:44,228 INFO L231 Difference]: Finished difference. Result has 48 places, 38 transitions, 200 flow [2024-06-28 02:56:44,228 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=200, PETRI_PLACES=48, PETRI_TRANSITIONS=38} [2024-06-28 02:56:44,229 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 17 predicate places. [2024-06-28 02:56:44,229 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 38 transitions, 200 flow [2024-06-28 02:56:44,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:56:44,229 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:56:44,229 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:56:44,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 02:56:44,230 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:56:44,230 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:56:44,230 INFO L85 PathProgramCache]: Analyzing trace with hash 448318990, now seen corresponding path program 1 times [2024-06-28 02:56:44,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:56:44,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336165682] [2024-06-28 02:56:44,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:56:44,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:56:44,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:56:44,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:56:44,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:56:44,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336165682] [2024-06-28 02:56:44,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336165682] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:56:44,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:56:44,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:56:44,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34049950] [2024-06-28 02:56:44,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:56:44,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:56:44,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:56:44,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:56:44,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:56:44,825 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 02:56:44,826 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 38 transitions, 200 flow. Second operand has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:56:44,826 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:56:44,826 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 02:56:44,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:56:45,079 INFO L124 PetriNetUnfolderBase]: 220/408 cut-off events. [2024-06-28 02:56:45,079 INFO L125 PetriNetUnfolderBase]: For 1121/1121 co-relation queries the response was YES. [2024-06-28 02:56:45,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1385 conditions, 408 events. 220/408 cut-off events. For 1121/1121 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1488 event pairs, 58 based on Foata normal form. 3/410 useless extension candidates. Maximal degree in co-relation 1365. Up to 379 conditions per place. [2024-06-28 02:56:45,082 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 36 selfloop transitions, 8 changer transitions 0/48 dead transitions. [2024-06-28 02:56:45,082 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 48 transitions, 314 flow [2024-06-28 02:56:45,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:56:45,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:56:45,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 78 transitions. [2024-06-28 02:56:45,083 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-28 02:56:45,083 INFO L175 Difference]: Start difference. First operand has 48 places, 38 transitions, 200 flow. Second operand 6 states and 78 transitions. [2024-06-28 02:56:45,083 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 48 transitions, 314 flow [2024-06-28 02:56:45,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 48 transitions, 285 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-28 02:56:45,085 INFO L231 Difference]: Finished difference. Result has 49 places, 40 transitions, 204 flow [2024-06-28 02:56:45,085 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=171, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=204, PETRI_PLACES=49, PETRI_TRANSITIONS=40} [2024-06-28 02:56:45,086 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 18 predicate places. [2024-06-28 02:56:45,086 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 40 transitions, 204 flow [2024-06-28 02:56:45,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:56:45,086 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:56:45,086 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:56:45,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 02:56:45,087 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:56:45,087 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:56:45,087 INFO L85 PathProgramCache]: Analyzing trace with hash 451246899, now seen corresponding path program 1 times [2024-06-28 02:56:45,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:56:45,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257193450] [2024-06-28 02:56:45,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:56:45,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:56:45,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:56:45,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:56:45,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:56:45,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257193450] [2024-06-28 02:56:45,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257193450] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:56:45,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:56:45,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:56:45,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745343362] [2024-06-28 02:56:45,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:56:45,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:56:45,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:56:45,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:56:45,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:56:45,669 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 02:56:45,669 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 40 transitions, 204 flow. Second operand has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:56:45,669 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:56:45,669 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 02:56:45,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:56:45,805 INFO L124 PetriNetUnfolderBase]: 234/431 cut-off events. [2024-06-28 02:56:45,806 INFO L125 PetriNetUnfolderBase]: For 1381/1381 co-relation queries the response was YES. [2024-06-28 02:56:45,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1519 conditions, 431 events. 234/431 cut-off events. For 1381/1381 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1607 event pairs, 59 based on Foata normal form. 1/431 useless extension candidates. Maximal degree in co-relation 1497. Up to 396 conditions per place. [2024-06-28 02:56:45,808 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 38 selfloop transitions, 13 changer transitions 0/55 dead transitions. [2024-06-28 02:56:45,808 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 55 transitions, 374 flow [2024-06-28 02:56:45,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:56:45,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:56:45,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 88 transitions. [2024-06-28 02:56:45,809 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39285714285714285 [2024-06-28 02:56:45,810 INFO L175 Difference]: Start difference. First operand has 49 places, 40 transitions, 204 flow. Second operand 7 states and 88 transitions. [2024-06-28 02:56:45,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 55 transitions, 374 flow [2024-06-28 02:56:45,811 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 55 transitions, 355 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-28 02:56:45,812 INFO L231 Difference]: Finished difference. Result has 54 places, 48 transitions, 271 flow [2024-06-28 02:56:45,812 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=187, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=271, PETRI_PLACES=54, PETRI_TRANSITIONS=48} [2024-06-28 02:56:45,813 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 23 predicate places. [2024-06-28 02:56:45,813 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 48 transitions, 271 flow [2024-06-28 02:56:45,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:56:45,813 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:56:45,814 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:56:45,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 02:56:45,814 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:56:45,814 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:56:45,814 INFO L85 PathProgramCache]: Analyzing trace with hash -131968361, now seen corresponding path program 2 times [2024-06-28 02:56:45,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:56:45,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067033000] [2024-06-28 02:56:45,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:56:45,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:56:45,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:56:46,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:56:46,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:56:46,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067033000] [2024-06-28 02:56:46,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067033000] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:56:46,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:56:46,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:56:46,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018071863] [2024-06-28 02:56:46,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:56:46,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:56:46,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:56:46,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:56:46,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:56:46,390 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 02:56:46,391 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 48 transitions, 271 flow. Second operand has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:56:46,391 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:56:46,391 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 02:56:46,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:56:46,552 INFO L124 PetriNetUnfolderBase]: 232/428 cut-off events. [2024-06-28 02:56:46,552 INFO L125 PetriNetUnfolderBase]: For 1747/1747 co-relation queries the response was YES. [2024-06-28 02:56:46,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1615 conditions, 428 events. 232/428 cut-off events. For 1747/1747 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1585 event pairs, 58 based on Foata normal form. 1/428 useless extension candidates. Maximal degree in co-relation 1590. Up to 402 conditions per place. [2024-06-28 02:56:46,555 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 40 selfloop transitions, 9 changer transitions 0/53 dead transitions. [2024-06-28 02:56:46,555 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 53 transitions, 381 flow [2024-06-28 02:56:46,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:56:46,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:56:46,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 76 transitions. [2024-06-28 02:56:46,556 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3958333333333333 [2024-06-28 02:56:46,556 INFO L175 Difference]: Start difference. First operand has 54 places, 48 transitions, 271 flow. Second operand 6 states and 76 transitions. [2024-06-28 02:56:46,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 53 transitions, 381 flow [2024-06-28 02:56:46,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 53 transitions, 373 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-06-28 02:56:46,558 INFO L231 Difference]: Finished difference. Result has 59 places, 48 transitions, 286 flow [2024-06-28 02:56:46,559 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=263, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=286, PETRI_PLACES=59, PETRI_TRANSITIONS=48} [2024-06-28 02:56:46,559 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 28 predicate places. [2024-06-28 02:56:46,559 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 48 transitions, 286 flow [2024-06-28 02:56:46,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:56:46,560 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:56:46,560 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:56:46,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 02:56:46,560 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:56:46,560 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:56:46,560 INFO L85 PathProgramCache]: Analyzing trace with hash -2032978250, now seen corresponding path program 1 times [2024-06-28 02:56:46,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:56:46,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407519644] [2024-06-28 02:56:46,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:56:46,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:56:46,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:56:47,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:56:47,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:56:47,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407519644] [2024-06-28 02:56:47,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407519644] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:56:47,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:56:47,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:56:47,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501892102] [2024-06-28 02:56:47,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:56:47,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:56:47,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:56:47,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:56:47,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:56:47,326 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-28 02:56:47,327 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 48 transitions, 286 flow. Second operand has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 9 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:56:47,327 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:56:47,327 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-28 02:56:47,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:56:47,514 INFO L124 PetriNetUnfolderBase]: 226/418 cut-off events. [2024-06-28 02:56:47,514 INFO L125 PetriNetUnfolderBase]: For 2211/2211 co-relation queries the response was YES. [2024-06-28 02:56:47,515 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1609 conditions, 418 events. 226/418 cut-off events. For 2211/2211 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1518 event pairs, 35 based on Foata normal form. 4/421 useless extension candidates. Maximal degree in co-relation 1582. Up to 314 conditions per place. [2024-06-28 02:56:47,517 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 48 selfloop transitions, 17 changer transitions 0/72 dead transitions. [2024-06-28 02:56:47,517 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 72 transitions, 476 flow [2024-06-28 02:56:47,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:56:47,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:56:47,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 140 transitions. [2024-06-28 02:56:47,519 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4861111111111111 [2024-06-28 02:56:47,519 INFO L175 Difference]: Start difference. First operand has 59 places, 48 transitions, 286 flow. Second operand 9 states and 140 transitions. [2024-06-28 02:56:47,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 72 transitions, 476 flow [2024-06-28 02:56:47,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 72 transitions, 459 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-06-28 02:56:47,522 INFO L231 Difference]: Finished difference. Result has 63 places, 47 transitions, 295 flow [2024-06-28 02:56:47,523 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=257, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=295, PETRI_PLACES=63, PETRI_TRANSITIONS=47} [2024-06-28 02:56:47,525 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 32 predicate places. [2024-06-28 02:56:47,528 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 47 transitions, 295 flow [2024-06-28 02:56:47,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 9 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:56:47,528 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:56:47,528 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:56:47,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 02:56:47,529 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:56:47,530 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:56:47,530 INFO L85 PathProgramCache]: Analyzing trace with hash 2018282413, now seen corresponding path program 3 times [2024-06-28 02:56:47,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:56:47,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911336843] [2024-06-28 02:56:47,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:56:47,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:56:47,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:56:47,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:56:47,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:56:47,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911336843] [2024-06-28 02:56:47,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911336843] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:56:47,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:56:47,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:56:47,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634421367] [2024-06-28 02:56:47,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:56:47,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:56:47,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:56:47,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:56:47,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:56:48,023 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 02:56:48,023 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 47 transitions, 295 flow. Second operand has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:56:48,023 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:56:48,023 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 02:56:48,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:56:48,251 INFO L124 PetriNetUnfolderBase]: 226/417 cut-off events. [2024-06-28 02:56:48,252 INFO L125 PetriNetUnfolderBase]: For 2470/2470 co-relation queries the response was YES. [2024-06-28 02:56:48,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1687 conditions, 417 events. 226/417 cut-off events. For 2470/2470 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1512 event pairs, 54 based on Foata normal form. 1/417 useless extension candidates. Maximal degree in co-relation 1659. Up to 374 conditions per place. [2024-06-28 02:56:48,254 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 39 selfloop transitions, 17 changer transitions 0/60 dead transitions. [2024-06-28 02:56:48,254 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 60 transitions, 457 flow [2024-06-28 02:56:48,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:56:48,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:56:48,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 91 transitions. [2024-06-28 02:56:48,255 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-28 02:56:48,255 INFO L175 Difference]: Start difference. First operand has 63 places, 47 transitions, 295 flow. Second operand 7 states and 91 transitions. [2024-06-28 02:56:48,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 60 transitions, 457 flow [2024-06-28 02:56:48,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 60 transitions, 413 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-28 02:56:48,258 INFO L231 Difference]: Finished difference. Result has 64 places, 51 transitions, 332 flow [2024-06-28 02:56:48,258 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=253, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=332, PETRI_PLACES=64, PETRI_TRANSITIONS=51} [2024-06-28 02:56:48,259 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 33 predicate places. [2024-06-28 02:56:48,259 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 51 transitions, 332 flow [2024-06-28 02:56:48,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:56:48,259 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:56:48,259 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:56:48,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 02:56:48,259 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:56:48,259 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:56:48,260 INFO L85 PathProgramCache]: Analyzing trace with hash 1103573389, now seen corresponding path program 1 times [2024-06-28 02:56:48,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:56:48,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200540961] [2024-06-28 02:56:48,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:56:48,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:56:48,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:56:48,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:56:48,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:56:48,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200540961] [2024-06-28 02:56:48,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200540961] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:56:48,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:56:48,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:56:48,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691856996] [2024-06-28 02:56:48,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:56:48,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:56:48,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:56:48,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:56:48,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:56:48,885 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 02:56:48,885 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 51 transitions, 332 flow. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:56:48,885 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:56:48,885 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 02:56:48,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:56:49,009 INFO L124 PetriNetUnfolderBase]: 245/438 cut-off events. [2024-06-28 02:56:49,009 INFO L125 PetriNetUnfolderBase]: For 3036/3036 co-relation queries the response was YES. [2024-06-28 02:56:49,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1832 conditions, 438 events. 245/438 cut-off events. For 3036/3036 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1569 event pairs, 54 based on Foata normal form. 1/438 useless extension candidates. Maximal degree in co-relation 1801. Up to 383 conditions per place. [2024-06-28 02:56:49,011 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 44 selfloop transitions, 21 changer transitions 0/67 dead transitions. [2024-06-28 02:56:49,012 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 67 transitions, 542 flow [2024-06-28 02:56:49,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:56:49,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:56:49,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 89 transitions. [2024-06-28 02:56:49,013 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39732142857142855 [2024-06-28 02:56:49,013 INFO L175 Difference]: Start difference. First operand has 64 places, 51 transitions, 332 flow. Second operand 7 states and 89 transitions. [2024-06-28 02:56:49,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 67 transitions, 542 flow [2024-06-28 02:56:49,016 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 67 transitions, 510 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-06-28 02:56:49,017 INFO L231 Difference]: Finished difference. Result has 68 places, 55 transitions, 375 flow [2024-06-28 02:56:49,017 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=300, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=375, PETRI_PLACES=68, PETRI_TRANSITIONS=55} [2024-06-28 02:56:49,018 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 37 predicate places. [2024-06-28 02:56:49,019 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 55 transitions, 375 flow [2024-06-28 02:56:49,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:56:49,019 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:56:49,019 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:56:49,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 02:56:49,019 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:56:49,020 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:56:49,020 INFO L85 PathProgramCache]: Analyzing trace with hash -375418429, now seen corresponding path program 1 times [2024-06-28 02:56:49,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:56:49,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197500134] [2024-06-28 02:56:49,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:56:49,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:56:49,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:56:49,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:56:49,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:56:49,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197500134] [2024-06-28 02:56:49,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197500134] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:56:49,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:56:49,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:56:49,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95154233] [2024-06-28 02:56:49,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:56:49,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:56:49,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:56:49,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:56:49,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:56:49,717 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 02:56:49,718 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 55 transitions, 375 flow. Second operand has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:56:49,718 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:56:49,718 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 02:56:49,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:56:49,905 INFO L124 PetriNetUnfolderBase]: 255/463 cut-off events. [2024-06-28 02:56:49,905 INFO L125 PetriNetUnfolderBase]: For 3977/3977 co-relation queries the response was YES. [2024-06-28 02:56:49,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2017 conditions, 463 events. 255/463 cut-off events. For 3977/3977 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1730 event pairs, 58 based on Foata normal form. 3/465 useless extension candidates. Maximal degree in co-relation 1985. Up to 397 conditions per place. [2024-06-28 02:56:49,907 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 50 selfloop transitions, 17 changer transitions 0/73 dead transitions. [2024-06-28 02:56:49,907 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 73 transitions, 591 flow [2024-06-28 02:56:49,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:56:49,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:56:49,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 103 transitions. [2024-06-28 02:56:49,908 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40234375 [2024-06-28 02:56:49,908 INFO L175 Difference]: Start difference. First operand has 68 places, 55 transitions, 375 flow. Second operand 8 states and 103 transitions. [2024-06-28 02:56:49,908 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 73 transitions, 591 flow [2024-06-28 02:56:49,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 73 transitions, 562 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-06-28 02:56:49,912 INFO L231 Difference]: Finished difference. Result has 74 places, 61 transitions, 428 flow [2024-06-28 02:56:49,912 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=346, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=428, PETRI_PLACES=74, PETRI_TRANSITIONS=61} [2024-06-28 02:56:49,912 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 43 predicate places. [2024-06-28 02:56:49,912 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 61 transitions, 428 flow [2024-06-28 02:56:49,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:56:49,913 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:56:49,913 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:56:49,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 02:56:49,913 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:56:49,913 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:56:49,913 INFO L85 PathProgramCache]: Analyzing trace with hash -375418677, now seen corresponding path program 2 times [2024-06-28 02:56:49,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:56:49,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48388195] [2024-06-28 02:56:49,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:56:49,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:56:49,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:56:50,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:56:50,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:56:50,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48388195] [2024-06-28 02:56:50,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48388195] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:56:50,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:56:50,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:56:50,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699345210] [2024-06-28 02:56:50,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:56:50,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:56:50,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:56:50,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:56:50,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:56:50,463 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 02:56:50,464 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 61 transitions, 428 flow. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:56:50,464 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:56:50,464 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 02:56:50,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:56:50,632 INFO L124 PetriNetUnfolderBase]: 272/482 cut-off events. [2024-06-28 02:56:50,632 INFO L125 PetriNetUnfolderBase]: For 4497/4497 co-relation queries the response was YES. [2024-06-28 02:56:50,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2261 conditions, 482 events. 272/482 cut-off events. For 4497/4497 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1729 event pairs, 55 based on Foata normal form. 1/482 useless extension candidates. Maximal degree in co-relation 2226. Up to 426 conditions per place. [2024-06-28 02:56:50,635 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 50 selfloop transitions, 21 changer transitions 0/73 dead transitions. [2024-06-28 02:56:50,636 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 73 transitions, 638 flow [2024-06-28 02:56:50,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:56:50,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:56:50,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 87 transitions. [2024-06-28 02:56:50,637 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38839285714285715 [2024-06-28 02:56:50,637 INFO L175 Difference]: Start difference. First operand has 74 places, 61 transitions, 428 flow. Second operand 7 states and 87 transitions. [2024-06-28 02:56:50,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 73 transitions, 638 flow [2024-06-28 02:56:50,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 73 transitions, 622 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-28 02:56:50,643 INFO L231 Difference]: Finished difference. Result has 78 places, 63 transitions, 474 flow [2024-06-28 02:56:50,643 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=412, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=474, PETRI_PLACES=78, PETRI_TRANSITIONS=63} [2024-06-28 02:56:50,643 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 47 predicate places. [2024-06-28 02:56:50,643 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 63 transitions, 474 flow [2024-06-28 02:56:50,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:56:50,644 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:56:50,644 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:56:50,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 02:56:50,644 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:56:50,644 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:56:50,644 INFO L85 PathProgramCache]: Analyzing trace with hash 203957621, now seen corresponding path program 2 times [2024-06-28 02:56:50,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:56:50,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601794818] [2024-06-28 02:56:50,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:56:50,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:56:50,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:56:51,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:56:51,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:56:51,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601794818] [2024-06-28 02:56:51,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601794818] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:56:51,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:56:51,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:56:51,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227327201] [2024-06-28 02:56:51,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:56:51,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:56:51,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:56:51,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:56:51,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:56:51,274 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 02:56:51,275 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 63 transitions, 474 flow. Second operand has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:56:51,275 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:56:51,275 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 02:56:51,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:56:51,485 INFO L124 PetriNetUnfolderBase]: 267/483 cut-off events. [2024-06-28 02:56:51,485 INFO L125 PetriNetUnfolderBase]: For 5396/5396 co-relation queries the response was YES. [2024-06-28 02:56:51,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2326 conditions, 483 events. 267/483 cut-off events. For 5396/5396 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1784 event pairs, 56 based on Foata normal form. 3/485 useless extension candidates. Maximal degree in co-relation 2289. Up to 442 conditions per place. [2024-06-28 02:56:51,489 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 55 selfloop transitions, 11 changer transitions 0/73 dead transitions. [2024-06-28 02:56:51,489 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 73 transitions, 642 flow [2024-06-28 02:56:51,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:56:51,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:56:51,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 87 transitions. [2024-06-28 02:56:51,490 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38839285714285715 [2024-06-28 02:56:51,490 INFO L175 Difference]: Start difference. First operand has 78 places, 63 transitions, 474 flow. Second operand 7 states and 87 transitions. [2024-06-28 02:56:51,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 73 transitions, 642 flow [2024-06-28 02:56:51,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 73 transitions, 608 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-28 02:56:51,495 INFO L231 Difference]: Finished difference. Result has 81 places, 65 transitions, 487 flow [2024-06-28 02:56:51,495 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=440, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=487, PETRI_PLACES=81, PETRI_TRANSITIONS=65} [2024-06-28 02:56:51,496 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 50 predicate places. [2024-06-28 02:56:51,496 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 65 transitions, 487 flow [2024-06-28 02:56:51,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:56:51,496 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:56:51,496 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:56:51,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 02:56:51,496 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:56:51,496 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:56:51,496 INFO L85 PathProgramCache]: Analyzing trace with hash 1337549903, now seen corresponding path program 3 times [2024-06-28 02:56:51,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:56:51,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427768482] [2024-06-28 02:56:51,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:56:51,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:56:51,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:56:52,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:56:52,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:56:52,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427768482] [2024-06-28 02:56:52,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427768482] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:56:52,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:56:52,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:56:52,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020254808] [2024-06-28 02:56:52,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:56:52,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:56:52,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:56:52,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:56:52,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:56:52,123 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 02:56:52,124 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 65 transitions, 487 flow. Second operand has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:56:52,124 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:56:52,124 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 02:56:52,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:56:52,374 INFO L124 PetriNetUnfolderBase]: 261/474 cut-off events. [2024-06-28 02:56:52,374 INFO L125 PetriNetUnfolderBase]: For 5784/5784 co-relation queries the response was YES. [2024-06-28 02:56:52,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2295 conditions, 474 events. 261/474 cut-off events. For 5784/5784 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1751 event pairs, 54 based on Foata normal form. 3/476 useless extension candidates. Maximal degree in co-relation 2257. Up to 421 conditions per place. [2024-06-28 02:56:52,377 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 54 selfloop transitions, 14 changer transitions 0/75 dead transitions. [2024-06-28 02:56:52,377 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 75 transitions, 649 flow [2024-06-28 02:56:52,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:56:52,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:56:52,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 91 transitions. [2024-06-28 02:56:52,379 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-28 02:56:52,379 INFO L175 Difference]: Start difference. First operand has 81 places, 65 transitions, 487 flow. Second operand 7 states and 91 transitions. [2024-06-28 02:56:52,379 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 75 transitions, 649 flow [2024-06-28 02:56:52,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 75 transitions, 616 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-28 02:56:52,384 INFO L231 Difference]: Finished difference. Result has 83 places, 65 transitions, 487 flow [2024-06-28 02:56:52,385 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=454, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=487, PETRI_PLACES=83, PETRI_TRANSITIONS=65} [2024-06-28 02:56:52,385 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 52 predicate places. [2024-06-28 02:56:52,385 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 65 transitions, 487 flow [2024-06-28 02:56:52,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:56:52,385 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:56:52,385 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:56:52,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 02:56:52,386 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:56:52,386 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:56:52,386 INFO L85 PathProgramCache]: Analyzing trace with hash 1110239629, now seen corresponding path program 3 times [2024-06-28 02:56:52,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:56:52,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993910870] [2024-06-28 02:56:52,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:56:52,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:56:52,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:56:53,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:56:53,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:56:53,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993910870] [2024-06-28 02:56:53,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993910870] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:56:53,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:56:53,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:56:53,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573288435] [2024-06-28 02:56:53,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:56:53,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:56:53,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:56:53,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:56:53,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:56:53,074 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 02:56:53,075 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 65 transitions, 487 flow. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:56:53,075 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:56:53,075 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 02:56:53,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:56:53,249 INFO L124 PetriNetUnfolderBase]: 273/485 cut-off events. [2024-06-28 02:56:53,249 INFO L125 PetriNetUnfolderBase]: For 6052/6052 co-relation queries the response was YES. [2024-06-28 02:56:53,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2374 conditions, 485 events. 273/485 cut-off events. For 6052/6052 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1756 event pairs, 54 based on Foata normal form. 1/485 useless extension candidates. Maximal degree in co-relation 2335. Up to 467 conditions per place. [2024-06-28 02:56:53,252 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 57 selfloop transitions, 12 changer transitions 0/71 dead transitions. [2024-06-28 02:56:53,252 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 71 transitions, 639 flow [2024-06-28 02:56:53,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:56:53,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:56:53,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 86 transitions. [2024-06-28 02:56:53,253 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3359375 [2024-06-28 02:56:53,253 INFO L175 Difference]: Start difference. First operand has 83 places, 65 transitions, 487 flow. Second operand 8 states and 86 transitions. [2024-06-28 02:56:53,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 71 transitions, 639 flow [2024-06-28 02:56:53,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 71 transitions, 592 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-28 02:56:53,260 INFO L231 Difference]: Finished difference. Result has 85 places, 65 transitions, 469 flow [2024-06-28 02:56:53,260 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=440, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=469, PETRI_PLACES=85, PETRI_TRANSITIONS=65} [2024-06-28 02:56:53,260 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 54 predicate places. [2024-06-28 02:56:53,260 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 65 transitions, 469 flow [2024-06-28 02:56:53,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:56:53,261 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:56:53,261 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:56:53,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 02:56:53,261 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:56:53,261 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:56:53,261 INFO L85 PathProgramCache]: Analyzing trace with hash -1857148061, now seen corresponding path program 4 times [2024-06-28 02:56:53,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:56:53,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519167460] [2024-06-28 02:56:53,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:56:53,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:56:53,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:56:53,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:56:53,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:56:53,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519167460] [2024-06-28 02:56:53,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519167460] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:56:53,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:56:53,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:56:53,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688927817] [2024-06-28 02:56:53,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:56:53,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:56:53,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:56:53,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:56:53,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:56:53,824 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 02:56:53,825 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 65 transitions, 469 flow. Second operand has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:56:53,825 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:56:53,825 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 02:56:53,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:56:54,119 INFO L124 PetriNetUnfolderBase]: 263/478 cut-off events. [2024-06-28 02:56:54,119 INFO L125 PetriNetUnfolderBase]: For 6819/6819 co-relation queries the response was YES. [2024-06-28 02:56:54,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2323 conditions, 478 events. 263/478 cut-off events. For 6819/6819 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1796 event pairs, 54 based on Foata normal form. 3/480 useless extension candidates. Maximal degree in co-relation 2283. Up to 409 conditions per place. [2024-06-28 02:56:54,122 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 54 selfloop transitions, 22 changer transitions 0/83 dead transitions. [2024-06-28 02:56:54,122 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 83 transitions, 688 flow [2024-06-28 02:56:54,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:56:54,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:56:54,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 105 transitions. [2024-06-28 02:56:54,123 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41015625 [2024-06-28 02:56:54,123 INFO L175 Difference]: Start difference. First operand has 85 places, 65 transitions, 469 flow. Second operand 8 states and 105 transitions. [2024-06-28 02:56:54,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 83 transitions, 688 flow [2024-06-28 02:56:54,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 83 transitions, 638 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-28 02:56:54,129 INFO L231 Difference]: Finished difference. Result has 85 places, 71 transitions, 528 flow [2024-06-28 02:56:54,129 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=419, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=528, PETRI_PLACES=85, PETRI_TRANSITIONS=71} [2024-06-28 02:56:54,130 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 54 predicate places. [2024-06-28 02:56:54,130 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 71 transitions, 528 flow [2024-06-28 02:56:54,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:56:54,130 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:56:54,130 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:56:54,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 02:56:54,130 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:56:54,131 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:56:54,131 INFO L85 PathProgramCache]: Analyzing trace with hash -149112110, now seen corresponding path program 1 times [2024-06-28 02:56:54,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:56:54,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409891115] [2024-06-28 02:56:54,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:56:54,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:56:54,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:56:54,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:56:54,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:56:54,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409891115] [2024-06-28 02:56:54,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409891115] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:56:54,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:56:54,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:56:54,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276247532] [2024-06-28 02:56:54,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:56:54,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:56:54,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:56:54,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:56:54,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:56:54,797 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 02:56:54,797 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 71 transitions, 528 flow. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:56:54,797 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:56:54,797 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 02:56:54,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:56:54,971 INFO L124 PetriNetUnfolderBase]: 280/497 cut-off events. [2024-06-28 02:56:54,972 INFO L125 PetriNetUnfolderBase]: For 7332/7332 co-relation queries the response was YES. [2024-06-28 02:56:54,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2557 conditions, 497 events. 280/497 cut-off events. For 7332/7332 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1845 event pairs, 53 based on Foata normal form. 1/497 useless extension candidates. Maximal degree in co-relation 2516. Up to 422 conditions per place. [2024-06-28 02:56:54,975 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 61 selfloop transitions, 28 changer transitions 0/91 dead transitions. [2024-06-28 02:56:54,975 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 91 transitions, 818 flow [2024-06-28 02:56:54,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:56:54,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:56:54,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 102 transitions. [2024-06-28 02:56:54,978 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3984375 [2024-06-28 02:56:54,978 INFO L175 Difference]: Start difference. First operand has 85 places, 71 transitions, 528 flow. Second operand 8 states and 102 transitions. [2024-06-28 02:56:54,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 91 transitions, 818 flow [2024-06-28 02:56:54,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 91 transitions, 776 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-06-28 02:56:54,986 INFO L231 Difference]: Finished difference. Result has 88 places, 75 transitions, 579 flow [2024-06-28 02:56:54,987 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=486, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=579, PETRI_PLACES=88, PETRI_TRANSITIONS=75} [2024-06-28 02:56:54,987 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 57 predicate places. [2024-06-28 02:56:54,987 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 75 transitions, 579 flow [2024-06-28 02:56:54,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:56:54,988 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:56:54,988 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:56:54,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 02:56:54,988 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:56:54,988 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:56:54,988 INFO L85 PathProgramCache]: Analyzing trace with hash -148962380, now seen corresponding path program 2 times [2024-06-28 02:56:54,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:56:54,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659127765] [2024-06-28 02:56:54,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:56:54,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:56:55,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:56:55,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:56:55,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:56:55,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659127765] [2024-06-28 02:56:55,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659127765] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:56:55,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:56:55,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:56:55,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799397794] [2024-06-28 02:56:55,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:56:55,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:56:55,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:56:55,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:56:55,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:56:55,649 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 02:56:55,649 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 75 transitions, 579 flow. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:56:55,649 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:56:55,649 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 02:56:55,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:56:55,836 INFO L124 PetriNetUnfolderBase]: 283/502 cut-off events. [2024-06-28 02:56:55,836 INFO L125 PetriNetUnfolderBase]: For 8101/8101 co-relation queries the response was YES. [2024-06-28 02:56:55,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2644 conditions, 502 events. 283/502 cut-off events. For 8101/8101 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1871 event pairs, 53 based on Foata normal form. 1/502 useless extension candidates. Maximal degree in co-relation 2602. Up to 426 conditions per place. [2024-06-28 02:56:55,840 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 60 selfloop transitions, 28 changer transitions 0/90 dead transitions. [2024-06-28 02:56:55,840 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 90 transitions, 847 flow [2024-06-28 02:56:55,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:56:55,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:56:55,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 100 transitions. [2024-06-28 02:56:55,841 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-28 02:56:55,841 INFO L175 Difference]: Start difference. First operand has 88 places, 75 transitions, 579 flow. Second operand 8 states and 100 transitions. [2024-06-28 02:56:55,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 90 transitions, 847 flow [2024-06-28 02:56:55,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 90 transitions, 795 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-06-28 02:56:55,851 INFO L231 Difference]: Finished difference. Result has 92 places, 77 transitions, 606 flow [2024-06-28 02:56:55,851 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=531, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=606, PETRI_PLACES=92, PETRI_TRANSITIONS=77} [2024-06-28 02:56:55,851 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 61 predicate places. [2024-06-28 02:56:55,852 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 77 transitions, 606 flow [2024-06-28 02:56:55,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:56:55,852 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:56:55,852 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:56:55,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 02:56:55,852 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:56:55,853 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:56:55,853 INFO L85 PathProgramCache]: Analyzing trace with hash -148962163, now seen corresponding path program 1 times [2024-06-28 02:56:55,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:56:55,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667191105] [2024-06-28 02:56:55,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:56:55,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:56:55,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:56:56,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:56:56,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:56:56,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667191105] [2024-06-28 02:56:56,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667191105] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:56:56,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:56:56,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:56:56,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180710446] [2024-06-28 02:56:56,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:56:56,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:56:56,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:56:56,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:56:56,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:56:56,559 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 02:56:56,559 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 77 transitions, 606 flow. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:56:56,559 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:56:56,559 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 02:56:56,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:56:56,747 INFO L124 PetriNetUnfolderBase]: 302/533 cut-off events. [2024-06-28 02:56:56,747 INFO L125 PetriNetUnfolderBase]: For 9663/9663 co-relation queries the response was YES. [2024-06-28 02:56:56,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2840 conditions, 533 events. 302/533 cut-off events. For 9663/9663 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2014 event pairs, 61 based on Foata normal form. 3/535 useless extension candidates. Maximal degree in co-relation 2796. Up to 390 conditions per place. [2024-06-28 02:56:56,751 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 64 selfloop transitions, 34 changer transitions 0/100 dead transitions. [2024-06-28 02:56:56,751 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 100 transitions, 930 flow [2024-06-28 02:56:56,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:56:56,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:56:56,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 107 transitions. [2024-06-28 02:56:56,752 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41796875 [2024-06-28 02:56:56,752 INFO L175 Difference]: Start difference. First operand has 92 places, 77 transitions, 606 flow. Second operand 8 states and 107 transitions. [2024-06-28 02:56:56,752 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 100 transitions, 930 flow [2024-06-28 02:56:56,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 100 transitions, 884 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-28 02:56:56,762 INFO L231 Difference]: Finished difference. Result has 95 places, 81 transitions, 665 flow [2024-06-28 02:56:56,762 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=560, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=665, PETRI_PLACES=95, PETRI_TRANSITIONS=81} [2024-06-28 02:56:56,762 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 64 predicate places. [2024-06-28 02:56:56,762 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 81 transitions, 665 flow [2024-06-28 02:56:56,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:56:56,763 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:56:56,763 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:56:56,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 02:56:56,763 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:56:56,763 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:56:56,763 INFO L85 PathProgramCache]: Analyzing trace with hash -1742125579, now seen corresponding path program 2 times [2024-06-28 02:56:56,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:56:56,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394242782] [2024-06-28 02:56:56,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:56:56,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:56:56,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:56:57,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:56:57,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:56:57,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394242782] [2024-06-28 02:56:57,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394242782] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:56:57,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:56:57,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:56:57,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940350384] [2024-06-28 02:56:57,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:56:57,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:56:57,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:56:57,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:56:57,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:56:57,420 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 02:56:57,421 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 81 transitions, 665 flow. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:56:57,421 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:56:57,421 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 02:56:57,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:56:57,624 INFO L124 PetriNetUnfolderBase]: 326/572 cut-off events. [2024-06-28 02:56:57,624 INFO L125 PetriNetUnfolderBase]: For 11438/11438 co-relation queries the response was YES. [2024-06-28 02:56:57,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3183 conditions, 572 events. 326/572 cut-off events. For 11438/11438 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2191 event pairs, 59 based on Foata normal form. 3/574 useless extension candidates. Maximal degree in co-relation 3138. Up to 410 conditions per place. [2024-06-28 02:56:57,630 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 69 selfloop transitions, 33 changer transitions 0/104 dead transitions. [2024-06-28 02:56:57,630 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 104 transitions, 1049 flow [2024-06-28 02:56:57,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:56:57,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:56:57,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 106 transitions. [2024-06-28 02:56:57,634 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4140625 [2024-06-28 02:56:57,634 INFO L175 Difference]: Start difference. First operand has 95 places, 81 transitions, 665 flow. Second operand 8 states and 106 transitions. [2024-06-28 02:56:57,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 104 transitions, 1049 flow [2024-06-28 02:56:57,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 104 transitions, 1001 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-06-28 02:56:57,645 INFO L231 Difference]: Finished difference. Result has 99 places, 85 transitions, 726 flow [2024-06-28 02:56:57,645 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=621, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=726, PETRI_PLACES=99, PETRI_TRANSITIONS=85} [2024-06-28 02:56:57,645 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 68 predicate places. [2024-06-28 02:56:57,645 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 85 transitions, 726 flow [2024-06-28 02:56:57,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:56:57,646 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:56:57,646 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:56:57,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 02:56:57,646 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:56:57,647 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:56:57,647 INFO L85 PathProgramCache]: Analyzing trace with hash -143398190, now seen corresponding path program 3 times [2024-06-28 02:56:57,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:56:57,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145364593] [2024-06-28 02:56:57,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:56:57,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:56:57,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:56:58,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:56:58,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:56:58,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145364593] [2024-06-28 02:56:58,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145364593] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:56:58,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:56:58,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:56:58,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101394517] [2024-06-28 02:56:58,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:56:58,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:56:58,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:56:58,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:56:58,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:56:58,284 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 02:56:58,285 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 85 transitions, 726 flow. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:56:58,285 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:56:58,285 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 02:56:58,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:56:58,442 INFO L124 PetriNetUnfolderBase]: 329/577 cut-off events. [2024-06-28 02:56:58,443 INFO L125 PetriNetUnfolderBase]: For 12099/12099 co-relation queries the response was YES. [2024-06-28 02:56:58,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3318 conditions, 577 events. 329/577 cut-off events. For 12099/12099 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2233 event pairs, 60 based on Foata normal form. 1/577 useless extension candidates. Maximal degree in co-relation 3271. Up to 500 conditions per place. [2024-06-28 02:56:58,446 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 68 selfloop transitions, 28 changer transitions 0/98 dead transitions. [2024-06-28 02:56:58,447 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 98 transitions, 1008 flow [2024-06-28 02:56:58,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:56:58,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:56:58,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 98 transitions. [2024-06-28 02:56:58,448 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3828125 [2024-06-28 02:56:58,448 INFO L175 Difference]: Start difference. First operand has 99 places, 85 transitions, 726 flow. Second operand 8 states and 98 transitions. [2024-06-28 02:56:58,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 98 transitions, 1008 flow [2024-06-28 02:56:58,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 98 transitions, 963 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-06-28 02:56:58,465 INFO L231 Difference]: Finished difference. Result has 103 places, 87 transitions, 758 flow [2024-06-28 02:56:58,465 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=681, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=758, PETRI_PLACES=103, PETRI_TRANSITIONS=87} [2024-06-28 02:56:58,465 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 72 predicate places. [2024-06-28 02:56:58,466 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 87 transitions, 758 flow [2024-06-28 02:56:58,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:56:58,466 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:56:58,466 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:56:58,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 02:56:58,466 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:56:58,467 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:56:58,467 INFO L85 PathProgramCache]: Analyzing trace with hash 1246924047, now seen corresponding path program 3 times [2024-06-28 02:56:58,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:56:58,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373835332] [2024-06-28 02:56:58,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:56:58,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:56:58,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:56:59,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:56:59,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:56:59,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373835332] [2024-06-28 02:56:59,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373835332] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:56:59,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:56:59,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:56:59,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898163416] [2024-06-28 02:56:59,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:56:59,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:56:59,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:56:59,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:56:59,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:56:59,232 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 02:56:59,233 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 87 transitions, 758 flow. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:56:59,233 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:56:59,233 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 02:56:59,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:56:59,407 INFO L124 PetriNetUnfolderBase]: 323/568 cut-off events. [2024-06-28 02:56:59,408 INFO L125 PetriNetUnfolderBase]: For 12873/12873 co-relation queries the response was YES. [2024-06-28 02:56:59,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3237 conditions, 568 events. 323/568 cut-off events. For 12873/12873 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2171 event pairs, 57 based on Foata normal form. 3/570 useless extension candidates. Maximal degree in co-relation 3189. Up to 411 conditions per place. [2024-06-28 02:56:59,411 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 73 selfloop transitions, 32 changer transitions 0/107 dead transitions. [2024-06-28 02:56:59,411 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 107 transitions, 1080 flow [2024-06-28 02:56:59,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:56:59,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:56:59,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 108 transitions. [2024-06-28 02:56:59,413 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.421875 [2024-06-28 02:56:59,413 INFO L175 Difference]: Start difference. First operand has 103 places, 87 transitions, 758 flow. Second operand 8 states and 108 transitions. [2024-06-28 02:56:59,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 107 transitions, 1080 flow [2024-06-28 02:56:59,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 107 transitions, 1029 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-28 02:56:59,426 INFO L231 Difference]: Finished difference. Result has 106 places, 87 transitions, 776 flow [2024-06-28 02:56:59,427 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=707, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=776, PETRI_PLACES=106, PETRI_TRANSITIONS=87} [2024-06-28 02:56:59,427 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 75 predicate places. [2024-06-28 02:56:59,427 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 87 transitions, 776 flow [2024-06-28 02:56:59,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:56:59,427 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:56:59,428 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:56:59,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 02:56:59,428 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:56:59,428 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:56:59,428 INFO L85 PathProgramCache]: Analyzing trace with hash -629136563, now seen corresponding path program 4 times [2024-06-28 02:56:59,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:56:59,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887385427] [2024-06-28 02:56:59,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:56:59,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:56:59,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:00,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:57:00,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:00,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887385427] [2024-06-28 02:57:00,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887385427] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:00,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:00,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:57:00,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210118298] [2024-06-28 02:57:00,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:00,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:57:00,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:00,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:57:00,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:57:00,127 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 02:57:00,127 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 87 transitions, 776 flow. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:00,127 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:00,127 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 02:57:00,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:00,401 INFO L124 PetriNetUnfolderBase]: 332/583 cut-off events. [2024-06-28 02:57:00,401 INFO L125 PetriNetUnfolderBase]: For 14131/14131 co-relation queries the response was YES. [2024-06-28 02:57:00,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3382 conditions, 583 events. 332/583 cut-off events. For 14131/14131 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2264 event pairs, 57 based on Foata normal form. 3/585 useless extension candidates. Maximal degree in co-relation 3333. Up to 511 conditions per place. [2024-06-28 02:57:00,412 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 79 selfloop transitions, 22 changer transitions 0/103 dead transitions. [2024-06-28 02:57:00,412 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 103 transitions, 1088 flow [2024-06-28 02:57:00,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:57:00,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:57:00,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 105 transitions. [2024-06-28 02:57:00,414 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3645833333333333 [2024-06-28 02:57:00,414 INFO L175 Difference]: Start difference. First operand has 106 places, 87 transitions, 776 flow. Second operand 9 states and 105 transitions. [2024-06-28 02:57:00,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 103 transitions, 1088 flow [2024-06-28 02:57:00,426 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 103 transitions, 1008 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-28 02:57:00,428 INFO L231 Difference]: Finished difference. Result has 108 places, 89 transitions, 767 flow [2024-06-28 02:57:00,428 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=700, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=767, PETRI_PLACES=108, PETRI_TRANSITIONS=89} [2024-06-28 02:57:00,429 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 77 predicate places. [2024-06-28 02:57:00,429 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 89 transitions, 767 flow [2024-06-28 02:57:00,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:00,429 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:00,429 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:00,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 02:57:00,430 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:57:00,430 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:00,430 INFO L85 PathProgramCache]: Analyzing trace with hash -1485632726, now seen corresponding path program 4 times [2024-06-28 02:57:00,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:00,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95730065] [2024-06-28 02:57:00,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:00,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:00,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:00,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:57:00,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:00,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95730065] [2024-06-28 02:57:00,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95730065] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:00,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:00,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:57:00,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175995583] [2024-06-28 02:57:00,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:00,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:57:00,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:00,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:57:00,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:57:00,924 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 02:57:00,924 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 89 transitions, 767 flow. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:00,924 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:00,924 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 02:57:00,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:01,067 INFO L124 PetriNetUnfolderBase]: 330/580 cut-off events. [2024-06-28 02:57:01,068 INFO L125 PetriNetUnfolderBase]: For 14075/14075 co-relation queries the response was YES. [2024-06-28 02:57:01,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3348 conditions, 580 events. 330/580 cut-off events. For 14075/14075 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2252 event pairs, 60 based on Foata normal form. 1/580 useless extension candidates. Maximal degree in co-relation 3298. Up to 559 conditions per place. [2024-06-28 02:57:01,073 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 81 selfloop transitions, 13 changer transitions 0/96 dead transitions. [2024-06-28 02:57:01,073 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 96 transitions, 971 flow [2024-06-28 02:57:01,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:57:01,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:57:01,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 88 transitions. [2024-06-28 02:57:01,079 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-28 02:57:01,080 INFO L175 Difference]: Start difference. First operand has 108 places, 89 transitions, 767 flow. Second operand 8 states and 88 transitions. [2024-06-28 02:57:01,080 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 96 transitions, 971 flow [2024-06-28 02:57:01,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 96 transitions, 887 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-28 02:57:01,096 INFO L231 Difference]: Finished difference. Result has 108 places, 89 transitions, 714 flow [2024-06-28 02:57:01,096 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=683, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=714, PETRI_PLACES=108, PETRI_TRANSITIONS=89} [2024-06-28 02:57:01,097 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 77 predicate places. [2024-06-28 02:57:01,097 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 89 transitions, 714 flow [2024-06-28 02:57:01,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:01,097 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:01,097 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:01,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 02:57:01,098 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:57:01,098 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:01,098 INFO L85 PathProgramCache]: Analyzing trace with hash 1445642153, now seen corresponding path program 5 times [2024-06-28 02:57:01,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:01,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107271129] [2024-06-28 02:57:01,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:01,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:01,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:01,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:57:01,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:01,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107271129] [2024-06-28 02:57:01,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107271129] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:01,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:01,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:57:01,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203749594] [2024-06-28 02:57:01,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:01,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:57:01,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:01,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:57:01,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:57:01,757 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 02:57:01,758 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 89 transitions, 714 flow. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:01,758 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:01,758 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 02:57:01,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:01,947 INFO L124 PetriNetUnfolderBase]: 339/595 cut-off events. [2024-06-28 02:57:01,948 INFO L125 PetriNetUnfolderBase]: For 15622/15622 co-relation queries the response was YES. [2024-06-28 02:57:01,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3369 conditions, 595 events. 339/595 cut-off events. For 15622/15622 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2324 event pairs, 60 based on Foata normal form. 3/597 useless extension candidates. Maximal degree in co-relation 3318. Up to 516 conditions per place. [2024-06-28 02:57:01,951 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 84 selfloop transitions, 21 changer transitions 0/107 dead transitions. [2024-06-28 02:57:01,951 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 107 transitions, 1042 flow [2024-06-28 02:57:01,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:57:01,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:57:01,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 99 transitions. [2024-06-28 02:57:01,952 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38671875 [2024-06-28 02:57:01,952 INFO L175 Difference]: Start difference. First operand has 108 places, 89 transitions, 714 flow. Second operand 8 states and 99 transitions. [2024-06-28 02:57:01,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 107 transitions, 1042 flow [2024-06-28 02:57:01,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 107 transitions, 975 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-28 02:57:01,969 INFO L231 Difference]: Finished difference. Result has 106 places, 91 transitions, 711 flow [2024-06-28 02:57:01,969 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=647, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=711, PETRI_PLACES=106, PETRI_TRANSITIONS=91} [2024-06-28 02:57:01,970 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 75 predicate places. [2024-06-28 02:57:01,970 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 91 transitions, 711 flow [2024-06-28 02:57:01,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:01,970 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:01,970 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:01,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 02:57:01,970 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:57:01,971 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:01,971 INFO L85 PathProgramCache]: Analyzing trace with hash 1445901623, now seen corresponding path program 6 times [2024-06-28 02:57:01,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:01,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539575666] [2024-06-28 02:57:01,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:01,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:01,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:02,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:57:02,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:02,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539575666] [2024-06-28 02:57:02,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539575666] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:02,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:02,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:57:02,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229151324] [2024-06-28 02:57:02,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:02,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:57:02,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:02,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:57:02,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:57:02,585 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 02:57:02,585 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 91 transitions, 711 flow. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:02,585 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:02,586 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 02:57:02,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:02,806 INFO L124 PetriNetUnfolderBase]: 333/586 cut-off events. [2024-06-28 02:57:02,807 INFO L125 PetriNetUnfolderBase]: For 15717/15717 co-relation queries the response was YES. [2024-06-28 02:57:02,808 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3297 conditions, 586 events. 333/586 cut-off events. For 15717/15717 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2295 event pairs, 59 based on Foata normal form. 3/588 useless extension candidates. Maximal degree in co-relation 3246. Up to 549 conditions per place. [2024-06-28 02:57:02,810 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 86 selfloop transitions, 14 changer transitions 0/102 dead transitions. [2024-06-28 02:57:02,810 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 102 transitions, 941 flow [2024-06-28 02:57:02,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:57:02,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:57:02,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 92 transitions. [2024-06-28 02:57:02,811 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.359375 [2024-06-28 02:57:02,811 INFO L175 Difference]: Start difference. First operand has 106 places, 91 transitions, 711 flow. Second operand 8 states and 92 transitions. [2024-06-28 02:57:02,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 102 transitions, 941 flow [2024-06-28 02:57:02,828 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 102 transitions, 897 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-06-28 02:57:02,829 INFO L231 Difference]: Finished difference. Result has 109 places, 91 transitions, 701 flow [2024-06-28 02:57:02,830 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=667, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=701, PETRI_PLACES=109, PETRI_TRANSITIONS=91} [2024-06-28 02:57:02,830 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 78 predicate places. [2024-06-28 02:57:02,830 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 91 transitions, 701 flow [2024-06-28 02:57:02,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:02,830 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:02,830 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:02,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 02:57:02,831 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:57:02,831 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:02,831 INFO L85 PathProgramCache]: Analyzing trace with hash -1476418720, now seen corresponding path program 1 times [2024-06-28 02:57:02,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:02,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446701076] [2024-06-28 02:57:02,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:02,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:02,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:03,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:57:03,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:03,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446701076] [2024-06-28 02:57:03,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446701076] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:03,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:03,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:57:03,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552451815] [2024-06-28 02:57:03,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:03,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:57:03,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:03,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:57:03,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:57:03,672 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 02:57:03,672 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 91 transitions, 701 flow. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:03,672 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:03,672 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 02:57:03,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:03,943 INFO L124 PetriNetUnfolderBase]: 304/555 cut-off events. [2024-06-28 02:57:03,943 INFO L125 PetriNetUnfolderBase]: For 15654/15654 co-relation queries the response was YES. [2024-06-28 02:57:03,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3092 conditions, 555 events. 304/555 cut-off events. For 15654/15654 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2227 event pairs, 53 based on Foata normal form. 2/556 useless extension candidates. Maximal degree in co-relation 3040. Up to 485 conditions per place. [2024-06-28 02:57:03,946 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 76 selfloop transitions, 13 changer transitions 0/102 dead transitions. [2024-06-28 02:57:03,947 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 102 transitions, 921 flow [2024-06-28 02:57:03,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:57:03,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:57:03,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 97 transitions. [2024-06-28 02:57:03,948 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37890625 [2024-06-28 02:57:03,948 INFO L175 Difference]: Start difference. First operand has 109 places, 91 transitions, 701 flow. Second operand 8 states and 97 transitions. [2024-06-28 02:57:03,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 102 transitions, 921 flow [2024-06-28 02:57:03,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 102 transitions, 876 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-28 02:57:03,966 INFO L231 Difference]: Finished difference. Result has 109 places, 93 transitions, 713 flow [2024-06-28 02:57:03,966 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=656, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=713, PETRI_PLACES=109, PETRI_TRANSITIONS=93} [2024-06-28 02:57:03,967 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 78 predicate places. [2024-06-28 02:57:03,967 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 93 transitions, 713 flow [2024-06-28 02:57:03,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:03,967 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:03,967 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:03,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 02:57:03,967 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:57:03,968 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:03,968 INFO L85 PathProgramCache]: Analyzing trace with hash -1476089686, now seen corresponding path program 1 times [2024-06-28 02:57:03,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:03,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303886058] [2024-06-28 02:57:03,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:03,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:03,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:05,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:57:05,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:05,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303886058] [2024-06-28 02:57:05,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303886058] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:05,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:05,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:57:05,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060875846] [2024-06-28 02:57:05,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:05,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:57:05,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:05,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:57:05,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:57:05,092 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 02:57:05,092 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 93 transitions, 713 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:05,092 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:05,092 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 02:57:05,092 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:05,388 INFO L124 PetriNetUnfolderBase]: 300/549 cut-off events. [2024-06-28 02:57:05,389 INFO L125 PetriNetUnfolderBase]: For 15815/15815 co-relation queries the response was YES. [2024-06-28 02:57:05,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3060 conditions, 549 events. 300/549 cut-off events. For 15815/15815 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2180 event pairs, 52 based on Foata normal form. 2/550 useless extension candidates. Maximal degree in co-relation 3007. Up to 482 conditions per place. [2024-06-28 02:57:05,392 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 77 selfloop transitions, 12 changer transitions 0/102 dead transitions. [2024-06-28 02:57:05,395 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 102 transitions, 911 flow [2024-06-28 02:57:05,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:57:05,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:57:05,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 95 transitions. [2024-06-28 02:57:05,397 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37109375 [2024-06-28 02:57:05,397 INFO L175 Difference]: Start difference. First operand has 109 places, 93 transitions, 713 flow. Second operand 8 states and 95 transitions. [2024-06-28 02:57:05,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 102 transitions, 911 flow [2024-06-28 02:57:05,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 102 transitions, 867 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-28 02:57:05,415 INFO L231 Difference]: Finished difference. Result has 111 places, 93 transitions, 697 flow [2024-06-28 02:57:05,416 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=669, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=697, PETRI_PLACES=111, PETRI_TRANSITIONS=93} [2024-06-28 02:57:05,416 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 80 predicate places. [2024-06-28 02:57:05,416 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 93 transitions, 697 flow [2024-06-28 02:57:05,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:05,416 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:05,416 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:05,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-28 02:57:05,417 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:57:05,417 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:05,417 INFO L85 PathProgramCache]: Analyzing trace with hash -177317464, now seen corresponding path program 1 times [2024-06-28 02:57:05,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:05,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663266954] [2024-06-28 02:57:05,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:05,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:05,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:06,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:57:06,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:06,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663266954] [2024-06-28 02:57:06,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663266954] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:06,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:06,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:57:06,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602460987] [2024-06-28 02:57:06,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:06,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:57:06,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:06,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:57:06,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:57:06,232 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 02:57:06,233 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 93 transitions, 697 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:06,233 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:06,233 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 02:57:06,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:06,467 INFO L124 PetriNetUnfolderBase]: 329/580 cut-off events. [2024-06-28 02:57:06,467 INFO L125 PetriNetUnfolderBase]: For 16572/16572 co-relation queries the response was YES. [2024-06-28 02:57:06,469 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3229 conditions, 580 events. 329/580 cut-off events. For 16572/16572 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2254 event pairs, 52 based on Foata normal form. 1/580 useless extension candidates. Maximal degree in co-relation 3175. Up to 527 conditions per place. [2024-06-28 02:57:06,470 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 94 selfloop transitions, 18 changer transitions 0/114 dead transitions. [2024-06-28 02:57:06,470 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 114 transitions, 997 flow [2024-06-28 02:57:06,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:57:06,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:57:06,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 109 transitions. [2024-06-28 02:57:06,471 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3784722222222222 [2024-06-28 02:57:06,472 INFO L175 Difference]: Start difference. First operand has 111 places, 93 transitions, 697 flow. Second operand 9 states and 109 transitions. [2024-06-28 02:57:06,472 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 114 transitions, 997 flow [2024-06-28 02:57:06,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 114 transitions, 969 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-28 02:57:06,492 INFO L231 Difference]: Finished difference. Result has 114 places, 95 transitions, 730 flow [2024-06-28 02:57:06,492 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=669, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=730, PETRI_PLACES=114, PETRI_TRANSITIONS=95} [2024-06-28 02:57:06,493 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 83 predicate places. [2024-06-28 02:57:06,493 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 95 transitions, 730 flow [2024-06-28 02:57:06,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:06,493 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:06,493 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:06,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-28 02:57:06,493 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:57:06,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:06,494 INFO L85 PathProgramCache]: Analyzing trace with hash -177197308, now seen corresponding path program 1 times [2024-06-28 02:57:06,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:06,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536123534] [2024-06-28 02:57:06,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:06,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:06,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:07,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:57:07,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:07,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536123534] [2024-06-28 02:57:07,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536123534] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:07,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:07,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:57:07,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635272455] [2024-06-28 02:57:07,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:07,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:57:07,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:07,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:57:07,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:57:07,262 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 02:57:07,262 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 95 transitions, 730 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:07,262 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:07,262 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 02:57:07,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:07,498 INFO L124 PetriNetUnfolderBase]: 403/705 cut-off events. [2024-06-28 02:57:07,498 INFO L125 PetriNetUnfolderBase]: For 20138/20138 co-relation queries the response was YES. [2024-06-28 02:57:07,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3855 conditions, 705 events. 403/705 cut-off events. For 20138/20138 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2932 event pairs, 80 based on Foata normal form. 3/707 useless extension candidates. Maximal degree in co-relation 3800. Up to 490 conditions per place. [2024-06-28 02:57:07,502 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 89 selfloop transitions, 47 changer transitions 0/138 dead transitions. [2024-06-28 02:57:07,502 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 138 transitions, 1279 flow [2024-06-28 02:57:07,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:57:07,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:57:07,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-28 02:57:07,503 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3875 [2024-06-28 02:57:07,504 INFO L175 Difference]: Start difference. First operand has 114 places, 95 transitions, 730 flow. Second operand 10 states and 124 transitions. [2024-06-28 02:57:07,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 138 transitions, 1279 flow [2024-06-28 02:57:07,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 138 transitions, 1226 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-28 02:57:07,532 INFO L231 Difference]: Finished difference. Result has 120 places, 114 transitions, 980 flow [2024-06-28 02:57:07,532 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=685, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=980, PETRI_PLACES=120, PETRI_TRANSITIONS=114} [2024-06-28 02:57:07,533 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 89 predicate places. [2024-06-28 02:57:07,533 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 114 transitions, 980 flow [2024-06-28 02:57:07,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:07,533 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:07,533 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:07,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-28 02:57:07,533 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:57:07,534 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:07,534 INFO L85 PathProgramCache]: Analyzing trace with hash -327507154, now seen corresponding path program 2 times [2024-06-28 02:57:07,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:07,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687245085] [2024-06-28 02:57:07,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:07,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:07,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:08,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:57:08,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:08,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687245085] [2024-06-28 02:57:08,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687245085] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:08,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:08,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:57:08,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140658642] [2024-06-28 02:57:08,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:08,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:57:08,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:08,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:57:08,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:57:08,279 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 02:57:08,279 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 114 transitions, 980 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:08,279 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:08,279 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 02:57:08,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:08,434 INFO L124 PetriNetUnfolderBase]: 406/709 cut-off events. [2024-06-28 02:57:08,435 INFO L125 PetriNetUnfolderBase]: For 20853/20853 co-relation queries the response was YES. [2024-06-28 02:57:08,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4166 conditions, 709 events. 406/709 cut-off events. For 20853/20853 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2974 event pairs, 63 based on Foata normal form. 1/709 useless extension candidates. Maximal degree in co-relation 4107. Up to 580 conditions per place. [2024-06-28 02:57:08,439 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 91 selfloop transitions, 42 changer transitions 0/135 dead transitions. [2024-06-28 02:57:08,439 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 135 transitions, 1400 flow [2024-06-28 02:57:08,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:57:08,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:57:08,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 113 transitions. [2024-06-28 02:57:08,440 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3923611111111111 [2024-06-28 02:57:08,440 INFO L175 Difference]: Start difference. First operand has 120 places, 114 transitions, 980 flow. Second operand 9 states and 113 transitions. [2024-06-28 02:57:08,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 135 transitions, 1400 flow [2024-06-28 02:57:08,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 135 transitions, 1359 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-06-28 02:57:08,465 INFO L231 Difference]: Finished difference. Result has 125 places, 118 transitions, 1073 flow [2024-06-28 02:57:08,465 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=939, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1073, PETRI_PLACES=125, PETRI_TRANSITIONS=118} [2024-06-28 02:57:08,466 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 94 predicate places. [2024-06-28 02:57:08,466 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 118 transitions, 1073 flow [2024-06-28 02:57:08,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:08,466 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:08,466 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:08,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-28 02:57:08,466 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:57:08,467 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:08,467 INFO L85 PathProgramCache]: Analyzing trace with hash -322865524, now seen corresponding path program 3 times [2024-06-28 02:57:08,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:08,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582293335] [2024-06-28 02:57:08,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:08,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:08,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:09,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:57:09,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:09,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582293335] [2024-06-28 02:57:09,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582293335] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:09,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:09,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:57:09,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054066159] [2024-06-28 02:57:09,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:09,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:57:09,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:09,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:57:09,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:57:09,222 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 02:57:09,222 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 118 transitions, 1073 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:09,222 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:09,222 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 02:57:09,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:09,398 INFO L124 PetriNetUnfolderBase]: 409/715 cut-off events. [2024-06-28 02:57:09,399 INFO L125 PetriNetUnfolderBase]: For 22218/22218 co-relation queries the response was YES. [2024-06-28 02:57:09,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4335 conditions, 715 events. 409/715 cut-off events. For 22218/22218 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 3004 event pairs, 69 based on Foata normal form. 1/715 useless extension candidates. Maximal degree in co-relation 4274. Up to 584 conditions per place. [2024-06-28 02:57:09,403 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 92 selfloop transitions, 40 changer transitions 0/134 dead transitions. [2024-06-28 02:57:09,403 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 134 transitions, 1465 flow [2024-06-28 02:57:09,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:57:09,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:57:09,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 111 transitions. [2024-06-28 02:57:09,404 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3854166666666667 [2024-06-28 02:57:09,404 INFO L175 Difference]: Start difference. First operand has 125 places, 118 transitions, 1073 flow. Second operand 9 states and 111 transitions. [2024-06-28 02:57:09,404 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 134 transitions, 1465 flow [2024-06-28 02:57:09,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 134 transitions, 1397 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-06-28 02:57:09,433 INFO L231 Difference]: Finished difference. Result has 129 places, 120 transitions, 1115 flow [2024-06-28 02:57:09,434 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1009, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1115, PETRI_PLACES=129, PETRI_TRANSITIONS=120} [2024-06-28 02:57:09,434 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 98 predicate places. [2024-06-28 02:57:09,434 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 120 transitions, 1115 flow [2024-06-28 02:57:09,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:09,434 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:09,435 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:09,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-28 02:57:09,435 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:57:09,435 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:09,435 INFO L85 PathProgramCache]: Analyzing trace with hash -322858828, now seen corresponding path program 2 times [2024-06-28 02:57:09,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:09,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144347500] [2024-06-28 02:57:09,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:09,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:09,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:10,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:57:10,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:10,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144347500] [2024-06-28 02:57:10,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144347500] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:10,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:10,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:57:10,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604115459] [2024-06-28 02:57:10,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:10,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:57:10,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:10,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:57:10,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:57:10,152 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 02:57:10,152 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 120 transitions, 1115 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:10,152 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:10,152 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 02:57:10,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:10,357 INFO L124 PetriNetUnfolderBase]: 467/809 cut-off events. [2024-06-28 02:57:10,357 INFO L125 PetriNetUnfolderBase]: For 31191/31191 co-relation queries the response was YES. [2024-06-28 02:57:10,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5060 conditions, 809 events. 467/809 cut-off events. For 31191/31191 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 3494 event pairs, 75 based on Foata normal form. 6/814 useless extension candidates. Maximal degree in co-relation 4997. Up to 438 conditions per place. [2024-06-28 02:57:10,363 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 86 selfloop transitions, 65 changer transitions 0/153 dead transitions. [2024-06-28 02:57:10,363 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 153 transitions, 1721 flow [2024-06-28 02:57:10,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:57:10,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:57:10,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 122 transitions. [2024-06-28 02:57:10,368 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4236111111111111 [2024-06-28 02:57:10,369 INFO L175 Difference]: Start difference. First operand has 129 places, 120 transitions, 1115 flow. Second operand 9 states and 122 transitions. [2024-06-28 02:57:10,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 153 transitions, 1721 flow [2024-06-28 02:57:10,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 153 transitions, 1650 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-28 02:57:10,402 INFO L231 Difference]: Finished difference. Result has 132 places, 130 transitions, 1282 flow [2024-06-28 02:57:10,402 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1044, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1282, PETRI_PLACES=132, PETRI_TRANSITIONS=130} [2024-06-28 02:57:10,402 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 101 predicate places. [2024-06-28 02:57:10,402 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 130 transitions, 1282 flow [2024-06-28 02:57:10,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:10,403 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:10,403 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:10,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-28 02:57:10,403 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:57:10,403 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:10,403 INFO L85 PathProgramCache]: Analyzing trace with hash -186958504, now seen corresponding path program 3 times [2024-06-28 02:57:10,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:10,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150090510] [2024-06-28 02:57:10,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:10,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:10,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:11,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:57:11,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:11,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150090510] [2024-06-28 02:57:11,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150090510] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:11,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:11,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:57:11,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537084195] [2024-06-28 02:57:11,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:11,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:57:11,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:11,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:57:11,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:57:11,159 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 02:57:11,160 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 130 transitions, 1282 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:11,160 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:11,160 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 02:57:11,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:11,415 INFO L124 PetriNetUnfolderBase]: 470/815 cut-off events. [2024-06-28 02:57:11,415 INFO L125 PetriNetUnfolderBase]: For 31743/31743 co-relation queries the response was YES. [2024-06-28 02:57:11,418 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5189 conditions, 815 events. 470/815 cut-off events. For 31743/31743 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3537 event pairs, 67 based on Foata normal form. 6/820 useless extension candidates. Maximal degree in co-relation 5125. Up to 442 conditions per place. [2024-06-28 02:57:11,421 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 89 selfloop transitions, 66 changer transitions 0/157 dead transitions. [2024-06-28 02:57:11,421 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 157 transitions, 1836 flow [2024-06-28 02:57:11,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:57:11,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:57:11,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 125 transitions. [2024-06-28 02:57:11,422 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4340277777777778 [2024-06-28 02:57:11,422 INFO L175 Difference]: Start difference. First operand has 132 places, 130 transitions, 1282 flow. Second operand 9 states and 125 transitions. [2024-06-28 02:57:11,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 157 transitions, 1836 flow [2024-06-28 02:57:11,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 157 transitions, 1760 flow, removed 18 selfloop flow, removed 4 redundant places. [2024-06-28 02:57:11,465 INFO L231 Difference]: Finished difference. Result has 137 places, 132 transitions, 1369 flow [2024-06-28 02:57:11,465 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1210, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1369, PETRI_PLACES=137, PETRI_TRANSITIONS=132} [2024-06-28 02:57:11,465 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 106 predicate places. [2024-06-28 02:57:11,465 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 132 transitions, 1369 flow [2024-06-28 02:57:11,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:11,466 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:11,466 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:11,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-28 02:57:11,466 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:57:11,466 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:11,467 INFO L85 PathProgramCache]: Analyzing trace with hash -792539212, now seen corresponding path program 4 times [2024-06-28 02:57:11,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:11,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141026868] [2024-06-28 02:57:11,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:11,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:11,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:12,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:57:12,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:12,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141026868] [2024-06-28 02:57:12,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141026868] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:12,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:12,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:57:12,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66920310] [2024-06-28 02:57:12,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:12,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:57:12,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:12,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:57:12,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:57:12,144 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 02:57:12,145 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 132 transitions, 1369 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:12,145 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:12,145 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 02:57:12,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:12,370 INFO L124 PetriNetUnfolderBase]: 503/869 cut-off events. [2024-06-28 02:57:12,370 INFO L125 PetriNetUnfolderBase]: For 35617/35617 co-relation queries the response was YES. [2024-06-28 02:57:12,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5725 conditions, 869 events. 503/869 cut-off events. For 35617/35617 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3817 event pairs, 85 based on Foata normal form. 6/874 useless extension candidates. Maximal degree in co-relation 5659. Up to 470 conditions per place. [2024-06-28 02:57:12,398 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 89 selfloop transitions, 69 changer transitions 0/160 dead transitions. [2024-06-28 02:57:12,399 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 160 transitions, 1977 flow [2024-06-28 02:57:12,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:57:12,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:57:12,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 120 transitions. [2024-06-28 02:57:12,404 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-28 02:57:12,404 INFO L175 Difference]: Start difference. First operand has 137 places, 132 transitions, 1369 flow. Second operand 9 states and 120 transitions. [2024-06-28 02:57:12,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 160 transitions, 1977 flow [2024-06-28 02:57:12,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 160 transitions, 1839 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-28 02:57:12,446 INFO L231 Difference]: Finished difference. Result has 140 places, 138 transitions, 1455 flow [2024-06-28 02:57:12,447 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1243, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1455, PETRI_PLACES=140, PETRI_TRANSITIONS=138} [2024-06-28 02:57:12,447 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 109 predicate places. [2024-06-28 02:57:12,447 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 138 transitions, 1455 flow [2024-06-28 02:57:12,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:12,447 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:12,448 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:12,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-28 02:57:12,448 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:57:12,449 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:12,449 INFO L85 PathProgramCache]: Analyzing trace with hash -59278, now seen corresponding path program 5 times [2024-06-28 02:57:12,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:12,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129891383] [2024-06-28 02:57:12,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:12,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:12,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:13,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:57:13,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:13,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129891383] [2024-06-28 02:57:13,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129891383] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:13,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:13,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:57:13,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983686772] [2024-06-28 02:57:13,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:13,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:57:13,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:13,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:57:13,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:57:13,150 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 02:57:13,151 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 138 transitions, 1455 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:13,151 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:13,151 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 02:57:13,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:13,409 INFO L124 PetriNetUnfolderBase]: 512/884 cut-off events. [2024-06-28 02:57:13,409 INFO L125 PetriNetUnfolderBase]: For 35732/35732 co-relation queries the response was YES. [2024-06-28 02:57:13,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5858 conditions, 884 events. 512/884 cut-off events. For 35732/35732 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 3903 event pairs, 122 based on Foata normal form. 3/886 useless extension candidates. Maximal degree in co-relation 5791. Up to 629 conditions per place. [2024-06-28 02:57:13,415 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 120 selfloop transitions, 45 changer transitions 0/167 dead transitions. [2024-06-28 02:57:13,415 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 167 transitions, 2086 flow [2024-06-28 02:57:13,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:57:13,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:57:13,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 129 transitions. [2024-06-28 02:57:13,416 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.403125 [2024-06-28 02:57:13,416 INFO L175 Difference]: Start difference. First operand has 140 places, 138 transitions, 1455 flow. Second operand 10 states and 129 transitions. [2024-06-28 02:57:13,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 167 transitions, 2086 flow [2024-06-28 02:57:13,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 167 transitions, 1975 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-06-28 02:57:13,459 INFO L231 Difference]: Finished difference. Result has 147 places, 143 transitions, 1530 flow [2024-06-28 02:57:13,459 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1353, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1530, PETRI_PLACES=147, PETRI_TRANSITIONS=143} [2024-06-28 02:57:13,459 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 116 predicate places. [2024-06-28 02:57:13,459 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 143 transitions, 1530 flow [2024-06-28 02:57:13,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:13,460 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:13,460 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:13,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-28 02:57:13,460 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:57:13,460 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:13,460 INFO L85 PathProgramCache]: Analyzing trace with hash -65974, now seen corresponding path program 4 times [2024-06-28 02:57:13,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:13,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216669185] [2024-06-28 02:57:13,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:13,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:13,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:14,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:57:14,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:14,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216669185] [2024-06-28 02:57:14,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216669185] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:14,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:14,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:57:14,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564395475] [2024-06-28 02:57:14,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:14,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:57:14,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:14,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:57:14,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:57:14,242 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 02:57:14,242 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 143 transitions, 1530 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:14,242 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:14,242 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 02:57:14,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:14,469 INFO L124 PetriNetUnfolderBase]: 515/889 cut-off events. [2024-06-28 02:57:14,470 INFO L125 PetriNetUnfolderBase]: For 36329/36329 co-relation queries the response was YES. [2024-06-28 02:57:14,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5889 conditions, 889 events. 515/889 cut-off events. For 36329/36329 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 3942 event pairs, 94 based on Foata normal form. 1/889 useless extension candidates. Maximal degree in co-relation 5819. Up to 757 conditions per place. [2024-06-28 02:57:14,476 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 112 selfloop transitions, 43 changer transitions 0/157 dead transitions. [2024-06-28 02:57:14,476 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 157 transitions, 1970 flow [2024-06-28 02:57:14,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:57:14,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:57:14,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 109 transitions. [2024-06-28 02:57:14,477 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3784722222222222 [2024-06-28 02:57:14,477 INFO L175 Difference]: Start difference. First operand has 147 places, 143 transitions, 1530 flow. Second operand 9 states and 109 transitions. [2024-06-28 02:57:14,477 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 157 transitions, 1970 flow [2024-06-28 02:57:14,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 157 transitions, 1903 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-28 02:57:14,527 INFO L231 Difference]: Finished difference. Result has 151 places, 145 transitions, 1577 flow [2024-06-28 02:57:14,527 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1463, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1577, PETRI_PLACES=151, PETRI_TRANSITIONS=145} [2024-06-28 02:57:14,527 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 120 predicate places. [2024-06-28 02:57:14,527 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 145 transitions, 1577 flow [2024-06-28 02:57:14,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:14,528 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:14,528 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:14,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-28 02:57:14,528 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:57:14,528 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:14,528 INFO L85 PathProgramCache]: Analyzing trace with hash -65788, now seen corresponding path program 6 times [2024-06-28 02:57:14,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:14,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123854045] [2024-06-28 02:57:14,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:14,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:14,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:15,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:57:15,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:15,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123854045] [2024-06-28 02:57:15,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123854045] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:15,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:15,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:57:15,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603714702] [2024-06-28 02:57:15,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:15,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:57:15,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:15,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:57:15,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:57:15,329 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 02:57:15,330 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 145 transitions, 1577 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:15,330 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:15,330 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 02:57:15,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:15,587 INFO L124 PetriNetUnfolderBase]: 509/880 cut-off events. [2024-06-28 02:57:15,587 INFO L125 PetriNetUnfolderBase]: For 37442/37442 co-relation queries the response was YES. [2024-06-28 02:57:15,590 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5767 conditions, 880 events. 509/880 cut-off events. For 37442/37442 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 3898 event pairs, 116 based on Foata normal form. 3/882 useless extension candidates. Maximal degree in co-relation 5696. Up to 630 conditions per place. [2024-06-28 02:57:15,593 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 120 selfloop transitions, 46 changer transitions 0/168 dead transitions. [2024-06-28 02:57:15,593 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 168 transitions, 2081 flow [2024-06-28 02:57:15,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:57:15,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:57:15,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-28 02:57:15,594 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.396875 [2024-06-28 02:57:15,594 INFO L175 Difference]: Start difference. First operand has 151 places, 145 transitions, 1577 flow. Second operand 10 states and 127 transitions. [2024-06-28 02:57:15,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 168 transitions, 2081 flow [2024-06-28 02:57:15,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 168 transitions, 1993 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-28 02:57:15,656 INFO L231 Difference]: Finished difference. Result has 155 places, 145 transitions, 1590 flow [2024-06-28 02:57:15,656 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1493, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1590, PETRI_PLACES=155, PETRI_TRANSITIONS=145} [2024-06-28 02:57:15,656 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 124 predicate places. [2024-06-28 02:57:15,656 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 145 transitions, 1590 flow [2024-06-28 02:57:15,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:15,657 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:15,657 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:15,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-28 02:57:15,657 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:57:15,657 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:15,657 INFO L85 PathProgramCache]: Analyzing trace with hash -2038032830, now seen corresponding path program 7 times [2024-06-28 02:57:15,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:15,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529323030] [2024-06-28 02:57:15,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:15,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:15,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:16,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:57:16,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:16,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529323030] [2024-06-28 02:57:16,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529323030] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:16,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:16,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:57:16,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056035934] [2024-06-28 02:57:16,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:16,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:57:16,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:16,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:57:16,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:57:16,343 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 02:57:16,344 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 145 transitions, 1590 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:16,344 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:16,344 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 02:57:16,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:16,608 INFO L124 PetriNetUnfolderBase]: 518/895 cut-off events. [2024-06-28 02:57:16,608 INFO L125 PetriNetUnfolderBase]: For 39226/39226 co-relation queries the response was YES. [2024-06-28 02:57:16,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5937 conditions, 895 events. 518/895 cut-off events. For 39226/39226 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3972 event pairs, 123 based on Foata normal form. 3/897 useless extension candidates. Maximal degree in co-relation 5865. Up to 843 conditions per place. [2024-06-28 02:57:16,615 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 143 selfloop transitions, 16 changer transitions 0/161 dead transitions. [2024-06-28 02:57:16,615 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 161 transitions, 1978 flow [2024-06-28 02:57:16,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:57:16,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:57:16,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 103 transitions. [2024-06-28 02:57:16,616 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3576388888888889 [2024-06-28 02:57:16,616 INFO L175 Difference]: Start difference. First operand has 155 places, 145 transitions, 1590 flow. Second operand 9 states and 103 transitions. [2024-06-28 02:57:16,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 161 transitions, 1978 flow [2024-06-28 02:57:16,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 161 transitions, 1902 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-06-28 02:57:16,681 INFO L231 Difference]: Finished difference. Result has 158 places, 147 transitions, 1585 flow [2024-06-28 02:57:16,681 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1518, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1585, PETRI_PLACES=158, PETRI_TRANSITIONS=147} [2024-06-28 02:57:16,682 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 127 predicate places. [2024-06-28 02:57:16,682 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 147 transitions, 1585 flow [2024-06-28 02:57:16,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:16,682 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:16,682 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:16,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-28 02:57:16,683 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:57:16,683 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:16,683 INFO L85 PathProgramCache]: Analyzing trace with hash -818884026, now seen corresponding path program 8 times [2024-06-28 02:57:16,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:16,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254890957] [2024-06-28 02:57:16,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:16,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:16,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:17,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:57:17,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:17,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254890957] [2024-06-28 02:57:17,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254890957] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:17,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:17,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:57:17,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366968556] [2024-06-28 02:57:17,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:17,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:57:17,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:17,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:57:17,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:57:17,319 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 02:57:17,320 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 147 transitions, 1585 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:17,320 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:17,320 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 02:57:17,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:17,551 INFO L124 PetriNetUnfolderBase]: 527/910 cut-off events. [2024-06-28 02:57:17,551 INFO L125 PetriNetUnfolderBase]: For 41022/41022 co-relation queries the response was YES. [2024-06-28 02:57:17,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6011 conditions, 910 events. 527/910 cut-off events. For 41022/41022 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 4063 event pairs, 128 based on Foata normal form. 3/912 useless extension candidates. Maximal degree in co-relation 5938. Up to 785 conditions per place. [2024-06-28 02:57:17,557 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 140 selfloop transitions, 26 changer transitions 0/168 dead transitions. [2024-06-28 02:57:17,557 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 168 transitions, 2089 flow [2024-06-28 02:57:17,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:57:17,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:57:17,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 112 transitions. [2024-06-28 02:57:17,558 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3888888888888889 [2024-06-28 02:57:17,558 INFO L175 Difference]: Start difference. First operand has 158 places, 147 transitions, 1585 flow. Second operand 9 states and 112 transitions. [2024-06-28 02:57:17,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 168 transitions, 2089 flow [2024-06-28 02:57:17,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 168 transitions, 2052 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-28 02:57:17,627 INFO L231 Difference]: Finished difference. Result has 160 places, 149 transitions, 1635 flow [2024-06-28 02:57:17,628 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1548, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1635, PETRI_PLACES=160, PETRI_TRANSITIONS=149} [2024-06-28 02:57:17,629 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 129 predicate places. [2024-06-28 02:57:17,629 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 149 transitions, 1635 flow [2024-06-28 02:57:17,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:17,630 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:17,631 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:17,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-28 02:57:17,641 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:57:17,642 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:17,642 INFO L85 PathProgramCache]: Analyzing trace with hash -819114666, now seen corresponding path program 9 times [2024-06-28 02:57:17,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:17,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723709504] [2024-06-28 02:57:17,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:17,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:17,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:18,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:57:18,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:18,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723709504] [2024-06-28 02:57:18,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723709504] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:18,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:18,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:57:18,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938104567] [2024-06-28 02:57:18,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:18,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:57:18,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:18,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:57:18,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:57:18,310 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 02:57:18,311 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 149 transitions, 1635 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:18,311 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:18,311 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 02:57:18,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:18,570 INFO L124 PetriNetUnfolderBase]: 536/925 cut-off events. [2024-06-28 02:57:18,570 INFO L125 PetriNetUnfolderBase]: For 43280/43280 co-relation queries the response was YES. [2024-06-28 02:57:18,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6183 conditions, 925 events. 536/925 cut-off events. For 43280/43280 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 4152 event pairs, 124 based on Foata normal form. 3/927 useless extension candidates. Maximal degree in co-relation 6109. Up to 793 conditions per place. [2024-06-28 02:57:18,577 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 136 selfloop transitions, 30 changer transitions 0/168 dead transitions. [2024-06-28 02:57:18,577 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 168 transitions, 2135 flow [2024-06-28 02:57:18,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:57:18,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:57:18,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 111 transitions. [2024-06-28 02:57:18,578 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3854166666666667 [2024-06-28 02:57:18,578 INFO L175 Difference]: Start difference. First operand has 160 places, 149 transitions, 1635 flow. Second operand 9 states and 111 transitions. [2024-06-28 02:57:18,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 168 transitions, 2135 flow [2024-06-28 02:57:18,646 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 168 transitions, 2077 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-28 02:57:18,648 INFO L231 Difference]: Finished difference. Result has 163 places, 151 transitions, 1676 flow [2024-06-28 02:57:18,648 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1581, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1676, PETRI_PLACES=163, PETRI_TRANSITIONS=151} [2024-06-28 02:57:18,654 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 132 predicate places. [2024-06-28 02:57:18,654 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 151 transitions, 1676 flow [2024-06-28 02:57:18,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:18,655 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:18,655 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:18,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-28 02:57:18,655 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:57:18,657 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:18,657 INFO L85 PathProgramCache]: Analyzing trace with hash 1190026710, now seen corresponding path program 5 times [2024-06-28 02:57:18,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:18,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944692060] [2024-06-28 02:57:18,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:18,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:18,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:19,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:57:19,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:19,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944692060] [2024-06-28 02:57:19,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944692060] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:19,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:19,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:57:19,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577057885] [2024-06-28 02:57:19,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:19,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:57:19,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:19,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:57:19,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:57:19,372 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 02:57:19,372 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 151 transitions, 1676 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:19,372 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:19,372 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 02:57:19,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:19,595 INFO L124 PetriNetUnfolderBase]: 534/922 cut-off events. [2024-06-28 02:57:19,595 INFO L125 PetriNetUnfolderBase]: For 42419/42419 co-relation queries the response was YES. [2024-06-28 02:57:19,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6161 conditions, 922 events. 534/922 cut-off events. For 42419/42419 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 4127 event pairs, 132 based on Foata normal form. 1/922 useless extension candidates. Maximal degree in co-relation 6086. Up to 896 conditions per place. [2024-06-28 02:57:19,602 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 142 selfloop transitions, 15 changer transitions 0/159 dead transitions. [2024-06-28 02:57:19,602 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 159 transitions, 2008 flow [2024-06-28 02:57:19,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:57:19,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:57:19,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-28 02:57:19,603 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3368055555555556 [2024-06-28 02:57:19,603 INFO L175 Difference]: Start difference. First operand has 163 places, 151 transitions, 1676 flow. Second operand 9 states and 97 transitions. [2024-06-28 02:57:19,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 159 transitions, 2008 flow [2024-06-28 02:57:19,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 159 transitions, 1928 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-28 02:57:19,680 INFO L231 Difference]: Finished difference. Result has 165 places, 151 transitions, 1631 flow [2024-06-28 02:57:19,681 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1596, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1631, PETRI_PLACES=165, PETRI_TRANSITIONS=151} [2024-06-28 02:57:19,681 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 134 predicate places. [2024-06-28 02:57:19,681 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 151 transitions, 1631 flow [2024-06-28 02:57:19,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:19,681 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:19,682 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:19,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-28 02:57:19,682 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:57:19,682 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:19,682 INFO L85 PathProgramCache]: Analyzing trace with hash 1190026896, now seen corresponding path program 10 times [2024-06-28 02:57:19,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:19,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099823783] [2024-06-28 02:57:19,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:19,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:19,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:20,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:57:20,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:20,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099823783] [2024-06-28 02:57:20,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099823783] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:20,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:20,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:57:20,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916724298] [2024-06-28 02:57:20,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:20,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:57:20,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:20,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:57:20,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:57:20,244 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 02:57:20,245 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 151 transitions, 1631 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:20,245 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:20,245 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 02:57:20,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:20,487 INFO L124 PetriNetUnfolderBase]: 528/913 cut-off events. [2024-06-28 02:57:20,488 INFO L125 PetriNetUnfolderBase]: For 43012/43012 co-relation queries the response was YES. [2024-06-28 02:57:20,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5957 conditions, 913 events. 528/913 cut-off events. For 43012/43012 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 4090 event pairs, 118 based on Foata normal form. 3/915 useless extension candidates. Maximal degree in co-relation 5881. Up to 786 conditions per place. [2024-06-28 02:57:20,494 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 133 selfloop transitions, 32 changer transitions 0/167 dead transitions. [2024-06-28 02:57:20,494 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 167 transitions, 2009 flow [2024-06-28 02:57:20,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:57:20,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:57:20,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 109 transitions. [2024-06-28 02:57:20,496 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3784722222222222 [2024-06-28 02:57:20,496 INFO L175 Difference]: Start difference. First operand has 165 places, 151 transitions, 1631 flow. Second operand 9 states and 109 transitions. [2024-06-28 02:57:20,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 167 transitions, 2009 flow [2024-06-28 02:57:20,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 167 transitions, 1909 flow, removed 7 selfloop flow, removed 10 redundant places. [2024-06-28 02:57:20,577 INFO L231 Difference]: Finished difference. Result has 164 places, 151 transitions, 1600 flow [2024-06-28 02:57:20,577 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1531, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1600, PETRI_PLACES=164, PETRI_TRANSITIONS=151} [2024-06-28 02:57:20,579 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 133 predicate places. [2024-06-28 02:57:20,580 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 151 transitions, 1600 flow [2024-06-28 02:57:20,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:20,580 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:20,580 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:20,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-28 02:57:20,582 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:57:20,582 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:20,582 INFO L85 PathProgramCache]: Analyzing trace with hash -523656208, now seen corresponding path program 1 times [2024-06-28 02:57:20,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:20,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551816825] [2024-06-28 02:57:20,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:20,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:20,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:21,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:57:21,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:21,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551816825] [2024-06-28 02:57:21,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551816825] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:21,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:21,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:57:21,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247651724] [2024-06-28 02:57:21,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:21,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:57:21,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:21,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:57:21,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:57:21,453 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 02:57:21,454 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 151 transitions, 1600 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:21,454 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:21,454 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 02:57:21,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:21,788 INFO L124 PetriNetUnfolderBase]: 524/907 cut-off events. [2024-06-28 02:57:21,789 INFO L125 PetriNetUnfolderBase]: For 41731/41731 co-relation queries the response was YES. [2024-06-28 02:57:21,793 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5902 conditions, 907 events. 524/907 cut-off events. For 41731/41731 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 4053 event pairs, 120 based on Foata normal form. 2/908 useless extension candidates. Maximal degree in co-relation 5825. Up to 868 conditions per place. [2024-06-28 02:57:21,795 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 146 selfloop transitions, 16 changer transitions 0/164 dead transitions. [2024-06-28 02:57:21,795 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 164 transitions, 1970 flow [2024-06-28 02:57:21,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:57:21,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:57:21,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-28 02:57:21,796 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.334375 [2024-06-28 02:57:21,796 INFO L175 Difference]: Start difference. First operand has 164 places, 151 transitions, 1600 flow. Second operand 10 states and 107 transitions. [2024-06-28 02:57:21,797 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 164 transitions, 1970 flow [2024-06-28 02:57:21,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 164 transitions, 1903 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-06-28 02:57:21,878 INFO L231 Difference]: Finished difference. Result has 166 places, 153 transitions, 1596 flow [2024-06-28 02:57:21,878 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1533, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1596, PETRI_PLACES=166, PETRI_TRANSITIONS=153} [2024-06-28 02:57:21,878 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 135 predicate places. [2024-06-28 02:57:21,878 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 153 transitions, 1596 flow [2024-06-28 02:57:21,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:21,879 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:21,879 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:21,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-28 02:57:21,879 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:57:21,879 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:21,879 INFO L85 PathProgramCache]: Analyzing trace with hash -1918965822, now seen corresponding path program 11 times [2024-06-28 02:57:21,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:21,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739410087] [2024-06-28 02:57:21,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:21,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:21,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:22,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:57:22,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:22,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739410087] [2024-06-28 02:57:22,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739410087] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:22,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:22,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:57:22,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466611954] [2024-06-28 02:57:22,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:22,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:57:22,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:22,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:57:22,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:57:22,525 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 02:57:22,525 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 153 transitions, 1596 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:22,525 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:22,525 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 02:57:22,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:22,927 INFO L124 PetriNetUnfolderBase]: 540/934 cut-off events. [2024-06-28 02:57:22,927 INFO L125 PetriNetUnfolderBase]: For 44303/44303 co-relation queries the response was YES. [2024-06-28 02:57:22,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6032 conditions, 934 events. 540/934 cut-off events. For 44303/44303 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 4218 event pairs, 78 based on Foata normal form. 3/936 useless extension candidates. Maximal degree in co-relation 5954. Up to 731 conditions per place. [2024-06-28 02:57:22,934 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 138 selfloop transitions, 68 changer transitions 0/208 dead transitions. [2024-06-28 02:57:22,934 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 208 transitions, 2503 flow [2024-06-28 02:57:22,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:57:22,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:57:22,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-28 02:57:22,935 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.396875 [2024-06-28 02:57:22,936 INFO L175 Difference]: Start difference. First operand has 166 places, 153 transitions, 1596 flow. Second operand 10 states and 127 transitions. [2024-06-28 02:57:22,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 208 transitions, 2503 flow [2024-06-28 02:57:23,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 208 transitions, 2456 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-28 02:57:23,033 INFO L231 Difference]: Finished difference. Result has 173 places, 189 transitions, 2194 flow [2024-06-28 02:57:23,034 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1549, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2194, PETRI_PLACES=173, PETRI_TRANSITIONS=189} [2024-06-28 02:57:23,034 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 142 predicate places. [2024-06-28 02:57:23,034 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 189 transitions, 2194 flow [2024-06-28 02:57:23,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:23,034 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:23,034 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:23,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-28 02:57:23,035 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:57:23,035 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:23,035 INFO L85 PathProgramCache]: Analyzing trace with hash -968835354, now seen corresponding path program 12 times [2024-06-28 02:57:23,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:23,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459196341] [2024-06-28 02:57:23,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:23,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:23,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:23,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:57:23,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:23,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459196341] [2024-06-28 02:57:23,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459196341] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:23,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:23,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:57:23,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286805352] [2024-06-28 02:57:23,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:23,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:57:23,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:23,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:57:23,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:57:23,589 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 02:57:23,589 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 189 transitions, 2194 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:23,589 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:23,589 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 02:57:23,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:23,986 INFO L124 PetriNetUnfolderBase]: 593/1023 cut-off events. [2024-06-28 02:57:23,987 INFO L125 PetriNetUnfolderBase]: For 47622/47622 co-relation queries the response was YES. [2024-06-28 02:57:23,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7029 conditions, 1023 events. 593/1023 cut-off events. For 47622/47622 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 4763 event pairs, 81 based on Foata normal form. 3/1025 useless extension candidates. Maximal degree in co-relation 6945. Up to 764 conditions per place. [2024-06-28 02:57:23,994 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 162 selfloop transitions, 70 changer transitions 0/234 dead transitions. [2024-06-28 02:57:23,994 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 234 transitions, 3097 flow [2024-06-28 02:57:23,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:57:23,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:57:23,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 133 transitions. [2024-06-28 02:57:24,011 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.415625 [2024-06-28 02:57:24,011 INFO L175 Difference]: Start difference. First operand has 173 places, 189 transitions, 2194 flow. Second operand 10 states and 133 transitions. [2024-06-28 02:57:24,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 234 transitions, 3097 flow [2024-06-28 02:57:24,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 234 transitions, 3032 flow, removed 26 selfloop flow, removed 3 redundant places. [2024-06-28 02:57:24,128 INFO L231 Difference]: Finished difference. Result has 184 places, 211 transitions, 2633 flow [2024-06-28 02:57:24,128 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2141, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2633, PETRI_PLACES=184, PETRI_TRANSITIONS=211} [2024-06-28 02:57:24,128 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 153 predicate places. [2024-06-28 02:57:24,128 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 211 transitions, 2633 flow [2024-06-28 02:57:24,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:24,129 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:24,129 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:24,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-28 02:57:24,129 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:57:24,129 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:24,129 INFO L85 PathProgramCache]: Analyzing trace with hash 1230328966, now seen corresponding path program 13 times [2024-06-28 02:57:24,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:24,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39707217] [2024-06-28 02:57:24,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:24,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:24,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:24,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:57:24,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:24,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39707217] [2024-06-28 02:57:24,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39707217] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:24,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:24,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:57:24,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517764342] [2024-06-28 02:57:24,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:24,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:57:24,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:24,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:57:24,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:57:24,818 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 02:57:24,818 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 211 transitions, 2633 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:24,818 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:24,818 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 02:57:24,818 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:25,360 INFO L124 PetriNetUnfolderBase]: 587/1014 cut-off events. [2024-06-28 02:57:25,360 INFO L125 PetriNetUnfolderBase]: For 46552/46552 co-relation queries the response was YES. [2024-06-28 02:57:25,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7140 conditions, 1014 events. 587/1014 cut-off events. For 46552/46552 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 4710 event pairs, 94 based on Foata normal form. 3/1016 useless extension candidates. Maximal degree in co-relation 7051. Up to 682 conditions per place. [2024-06-28 02:57:25,369 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 154 selfloop transitions, 84 changer transitions 0/240 dead transitions. [2024-06-28 02:57:25,369 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 240 transitions, 3360 flow [2024-06-28 02:57:25,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:57:25,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:57:25,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 135 transitions. [2024-06-28 02:57:25,370 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.421875 [2024-06-28 02:57:25,371 INFO L175 Difference]: Start difference. First operand has 184 places, 211 transitions, 2633 flow. Second operand 10 states and 135 transitions. [2024-06-28 02:57:25,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 240 transitions, 3360 flow [2024-06-28 02:57:25,488 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 240 transitions, 3223 flow, removed 31 selfloop flow, removed 4 redundant places. [2024-06-28 02:57:25,491 INFO L231 Difference]: Finished difference. Result has 192 places, 215 transitions, 2766 flow [2024-06-28 02:57:25,492 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2500, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2766, PETRI_PLACES=192, PETRI_TRANSITIONS=215} [2024-06-28 02:57:25,492 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 161 predicate places. [2024-06-28 02:57:25,492 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 215 transitions, 2766 flow [2024-06-28 02:57:25,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:25,492 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:25,492 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:25,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-28 02:57:25,493 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:57:25,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:25,493 INFO L85 PathProgramCache]: Analyzing trace with hash 1986900132, now seen corresponding path program 14 times [2024-06-28 02:57:25,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:25,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606544231] [2024-06-28 02:57:25,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:25,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:25,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:26,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:57:26,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:26,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606544231] [2024-06-28 02:57:26,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606544231] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:26,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:26,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:57:26,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999209891] [2024-06-28 02:57:26,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:26,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:57:26,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:26,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:57:26,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:57:26,184 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 02:57:26,184 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 215 transitions, 2766 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:26,184 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:26,184 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 02:57:26,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:26,682 INFO L124 PetriNetUnfolderBase]: 596/1029 cut-off events. [2024-06-28 02:57:26,683 INFO L125 PetriNetUnfolderBase]: For 48763/48763 co-relation queries the response was YES. [2024-06-28 02:57:26,688 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7384 conditions, 1029 events. 596/1029 cut-off events. For 48763/48763 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 4789 event pairs, 73 based on Foata normal form. 3/1031 useless extension candidates. Maximal degree in co-relation 7292. Up to 690 conditions per place. [2024-06-28 02:57:26,690 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 152 selfloop transitions, 86 changer transitions 0/240 dead transitions. [2024-06-28 02:57:26,691 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 240 transitions, 3470 flow [2024-06-28 02:57:26,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:57:26,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:57:26,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 132 transitions. [2024-06-28 02:57:26,692 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4125 [2024-06-28 02:57:26,692 INFO L175 Difference]: Start difference. First operand has 192 places, 215 transitions, 2766 flow. Second operand 10 states and 132 transitions. [2024-06-28 02:57:26,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 240 transitions, 3470 flow [2024-06-28 02:57:26,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 240 transitions, 3109 flow, removed 55 selfloop flow, removed 13 redundant places. [2024-06-28 02:57:26,820 INFO L231 Difference]: Finished difference. Result has 189 places, 218 transitions, 2627 flow [2024-06-28 02:57:26,820 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2418, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2627, PETRI_PLACES=189, PETRI_TRANSITIONS=218} [2024-06-28 02:57:26,821 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 158 predicate places. [2024-06-28 02:57:26,821 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 218 transitions, 2627 flow [2024-06-28 02:57:26,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:26,821 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:26,821 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:26,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-28 02:57:26,821 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:57:26,822 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:26,822 INFO L85 PathProgramCache]: Analyzing trace with hash 1405088412, now seen corresponding path program 15 times [2024-06-28 02:57:26,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:26,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977833320] [2024-06-28 02:57:26,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:26,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:26,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:27,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:57:27,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:27,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977833320] [2024-06-28 02:57:27,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977833320] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:27,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:27,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:57:27,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139200165] [2024-06-28 02:57:27,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:27,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:57:27,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:27,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:57:27,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:57:27,427 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 02:57:27,427 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 218 transitions, 2627 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:27,427 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:27,427 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 02:57:27,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:27,913 INFO L124 PetriNetUnfolderBase]: 590/1020 cut-off events. [2024-06-28 02:57:27,913 INFO L125 PetriNetUnfolderBase]: For 45965/45965 co-relation queries the response was YES. [2024-06-28 02:57:27,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6939 conditions, 1020 events. 590/1020 cut-off events. For 45965/45965 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 4748 event pairs, 73 based on Foata normal form. 3/1022 useless extension candidates. Maximal degree in co-relation 6852. Up to 686 conditions per place. [2024-06-28 02:57:27,922 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 155 selfloop transitions, 84 changer transitions 0/241 dead transitions. [2024-06-28 02:57:27,922 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 241 transitions, 3207 flow [2024-06-28 02:57:27,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:57:27,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:57:27,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 132 transitions. [2024-06-28 02:57:27,923 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4125 [2024-06-28 02:57:27,923 INFO L175 Difference]: Start difference. First operand has 189 places, 218 transitions, 2627 flow. Second operand 10 states and 132 transitions. [2024-06-28 02:57:27,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 241 transitions, 3207 flow [2024-06-28 02:57:28,051 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 241 transitions, 3003 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-28 02:57:28,055 INFO L231 Difference]: Finished difference. Result has 193 places, 218 transitions, 2598 flow [2024-06-28 02:57:28,055 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2423, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2598, PETRI_PLACES=193, PETRI_TRANSITIONS=218} [2024-06-28 02:57:28,055 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 162 predicate places. [2024-06-28 02:57:28,055 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 218 transitions, 2598 flow [2024-06-28 02:57:28,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:28,056 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:28,056 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:28,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-28 02:57:28,056 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:57:28,057 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:28,057 INFO L85 PathProgramCache]: Analyzing trace with hash -1566595471, now seen corresponding path program 1 times [2024-06-28 02:57:28,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:28,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529575427] [2024-06-28 02:57:28,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:28,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:28,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:28,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:57:28,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:28,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529575427] [2024-06-28 02:57:28,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529575427] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:28,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:28,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:57:28,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052354106] [2024-06-28 02:57:28,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:28,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:57:28,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:28,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:57:28,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:57:28,967 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 02:57:28,967 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 218 transitions, 2598 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:28,967 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:28,967 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 02:57:28,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:29,356 INFO L124 PetriNetUnfolderBase]: 598/1033 cut-off events. [2024-06-28 02:57:29,356 INFO L125 PetriNetUnfolderBase]: For 46417/46417 co-relation queries the response was YES. [2024-06-28 02:57:29,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7019 conditions, 1033 events. 598/1033 cut-off events. For 46417/46417 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 4851 event pairs, 86 based on Foata normal form. 1/1033 useless extension candidates. Maximal degree in co-relation 6932. Up to 937 conditions per place. [2024-06-28 02:57:29,365 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 208 selfloop transitions, 35 changer transitions 0/245 dead transitions. [2024-06-28 02:57:29,365 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 245 transitions, 3300 flow [2024-06-28 02:57:29,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:57:29,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:57:29,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-28 02:57:29,366 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-28 02:57:29,367 INFO L175 Difference]: Start difference. First operand has 193 places, 218 transitions, 2598 flow. Second operand 11 states and 132 transitions. [2024-06-28 02:57:29,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 245 transitions, 3300 flow [2024-06-28 02:57:29,479 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 245 transitions, 3079 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-28 02:57:29,482 INFO L231 Difference]: Finished difference. Result has 196 places, 222 transitions, 2496 flow [2024-06-28 02:57:29,482 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2377, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2496, PETRI_PLACES=196, PETRI_TRANSITIONS=222} [2024-06-28 02:57:29,482 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 165 predicate places. [2024-06-28 02:57:29,483 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 222 transitions, 2496 flow [2024-06-28 02:57:29,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:29,483 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:29,483 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:29,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-28 02:57:29,483 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:57:29,483 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:29,484 INFO L85 PathProgramCache]: Analyzing trace with hash -1424402036, now seen corresponding path program 1 times [2024-06-28 02:57:29,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:29,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125239440] [2024-06-28 02:57:29,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:29,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:29,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:30,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:57:30,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:30,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125239440] [2024-06-28 02:57:30,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125239440] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:30,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:30,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:57:30,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725514491] [2024-06-28 02:57:30,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:30,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:57:30,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:30,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:57:30,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:57:30,202 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 02:57:30,203 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 222 transitions, 2496 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:30,203 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:30,203 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 02:57:30,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:30,499 INFO L124 PetriNetUnfolderBase]: 607/1048 cut-off events. [2024-06-28 02:57:30,499 INFO L125 PetriNetUnfolderBase]: For 49867/49867 co-relation queries the response was YES. [2024-06-28 02:57:30,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6976 conditions, 1048 events. 607/1048 cut-off events. For 49867/49867 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 4933 event pairs, 86 based on Foata normal form. 3/1050 useless extension candidates. Maximal degree in co-relation 6889. Up to 959 conditions per place. [2024-06-28 02:57:30,507 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 211 selfloop transitions, 31 changer transitions 0/244 dead transitions. [2024-06-28 02:57:30,507 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 244 transitions, 3066 flow [2024-06-28 02:57:30,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:57:30,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:57:30,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-06-28 02:57:30,508 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-28 02:57:30,508 INFO L175 Difference]: Start difference. First operand has 196 places, 222 transitions, 2496 flow. Second operand 10 states and 120 transitions. [2024-06-28 02:57:30,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 244 transitions, 3066 flow [2024-06-28 02:57:30,657 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 244 transitions, 2997 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-28 02:57:30,659 INFO L231 Difference]: Finished difference. Result has 199 places, 224 transitions, 2522 flow [2024-06-28 02:57:30,660 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2427, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2522, PETRI_PLACES=199, PETRI_TRANSITIONS=224} [2024-06-28 02:57:30,660 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 168 predicate places. [2024-06-28 02:57:30,660 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 224 transitions, 2522 flow [2024-06-28 02:57:30,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:30,661 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:30,661 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:30,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-28 02:57:30,661 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:57:30,661 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:30,662 INFO L85 PathProgramCache]: Analyzing trace with hash -1566505261, now seen corresponding path program 2 times [2024-06-28 02:57:30,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:30,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354654469] [2024-06-28 02:57:30,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:30,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:30,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:31,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:57:31,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:31,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354654469] [2024-06-28 02:57:31,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354654469] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:31,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:31,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:57:31,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604085010] [2024-06-28 02:57:31,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:31,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:57:31,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:31,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:57:31,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:57:31,572 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 02:57:31,573 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 224 transitions, 2522 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:31,573 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:31,573 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 02:57:31,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:31,955 INFO L124 PetriNetUnfolderBase]: 605/1045 cut-off events. [2024-06-28 02:57:31,955 INFO L125 PetriNetUnfolderBase]: For 47444/47444 co-relation queries the response was YES. [2024-06-28 02:57:31,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6992 conditions, 1045 events. 605/1045 cut-off events. For 47444/47444 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 4916 event pairs, 86 based on Foata normal form. 1/1045 useless extension candidates. Maximal degree in co-relation 6903. Up to 962 conditions per place. [2024-06-28 02:57:31,963 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 209 selfloop transitions, 31 changer transitions 0/242 dead transitions. [2024-06-28 02:57:31,964 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 242 transitions, 3056 flow [2024-06-28 02:57:31,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:57:31,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:57:31,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 118 transitions. [2024-06-28 02:57:31,965 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36875 [2024-06-28 02:57:31,965 INFO L175 Difference]: Start difference. First operand has 199 places, 224 transitions, 2522 flow. Second operand 10 states and 118 transitions. [2024-06-28 02:57:31,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 242 transitions, 3056 flow [2024-06-28 02:57:32,077 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 242 transitions, 2971 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-28 02:57:32,080 INFO L231 Difference]: Finished difference. Result has 201 places, 224 transitions, 2504 flow [2024-06-28 02:57:32,080 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2437, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2504, PETRI_PLACES=201, PETRI_TRANSITIONS=224} [2024-06-28 02:57:32,081 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 170 predicate places. [2024-06-28 02:57:32,081 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 224 transitions, 2504 flow [2024-06-28 02:57:32,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:32,081 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:32,081 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:32,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-28 02:57:32,082 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:57:32,082 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:32,082 INFO L85 PathProgramCache]: Analyzing trace with hash -1562780456, now seen corresponding path program 2 times [2024-06-28 02:57:32,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:32,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494762514] [2024-06-28 02:57:32,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:32,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:32,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:32,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:57:32,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:32,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494762514] [2024-06-28 02:57:32,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494762514] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:32,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:32,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:57:32,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075344907] [2024-06-28 02:57:32,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:32,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:57:32,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:32,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:57:32,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:57:32,888 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 02:57:32,888 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 224 transitions, 2504 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:32,888 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:32,889 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 02:57:32,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:33,261 INFO L124 PetriNetUnfolderBase]: 639/1100 cut-off events. [2024-06-28 02:57:33,261 INFO L125 PetriNetUnfolderBase]: For 59916/59916 co-relation queries the response was YES. [2024-06-28 02:57:33,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7526 conditions, 1100 events. 639/1100 cut-off events. For 59916/59916 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 5211 event pairs, 63 based on Foata normal form. 3/1102 useless extension candidates. Maximal degree in co-relation 7436. Up to 403 conditions per place. [2024-06-28 02:57:33,271 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 140 selfloop transitions, 117 changer transitions 0/259 dead transitions. [2024-06-28 02:57:33,271 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 259 transitions, 3423 flow [2024-06-28 02:57:33,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:57:33,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:57:33,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 138 transitions. [2024-06-28 02:57:33,272 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43125 [2024-06-28 02:57:33,272 INFO L175 Difference]: Start difference. First operand has 201 places, 224 transitions, 2504 flow. Second operand 10 states and 138 transitions. [2024-06-28 02:57:33,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 259 transitions, 3423 flow [2024-06-28 02:57:33,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 259 transitions, 3356 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-28 02:57:33,393 INFO L231 Difference]: Finished difference. Result has 202 places, 230 transitions, 2770 flow [2024-06-28 02:57:33,393 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2437, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2770, PETRI_PLACES=202, PETRI_TRANSITIONS=230} [2024-06-28 02:57:33,394 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 171 predicate places. [2024-06-28 02:57:33,394 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 230 transitions, 2770 flow [2024-06-28 02:57:33,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:33,394 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:33,394 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:33,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-28 02:57:33,394 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:57:33,395 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:33,395 INFO L85 PathProgramCache]: Analyzing trace with hash -1562786036, now seen corresponding path program 3 times [2024-06-28 02:57:33,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:33,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485709997] [2024-06-28 02:57:33,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:33,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:33,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:34,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:57:34,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:34,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485709997] [2024-06-28 02:57:34,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485709997] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:34,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:34,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:57:34,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84862519] [2024-06-28 02:57:34,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:34,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:57:34,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:34,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:57:34,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:57:34,126 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 02:57:34,126 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 230 transitions, 2770 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:34,126 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:34,126 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 02:57:34,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:34,430 INFO L124 PetriNetUnfolderBase]: 633/1091 cut-off events. [2024-06-28 02:57:34,430 INFO L125 PetriNetUnfolderBase]: For 58502/58502 co-relation queries the response was YES. [2024-06-28 02:57:34,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7610 conditions, 1091 events. 633/1091 cut-off events. For 58502/58502 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 5185 event pairs, 61 based on Foata normal form. 3/1093 useless extension candidates. Maximal degree in co-relation 7519. Up to 399 conditions per place. [2024-06-28 02:57:34,442 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 142 selfloop transitions, 116 changer transitions 0/260 dead transitions. [2024-06-28 02:57:34,442 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 260 transitions, 3507 flow [2024-06-28 02:57:34,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:57:34,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:57:34,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 140 transitions. [2024-06-28 02:57:34,443 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-06-28 02:57:34,443 INFO L175 Difference]: Start difference. First operand has 202 places, 230 transitions, 2770 flow. Second operand 10 states and 140 transitions. [2024-06-28 02:57:34,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 260 transitions, 3507 flow [2024-06-28 02:57:34,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 260 transitions, 3364 flow, removed 23 selfloop flow, removed 5 redundant places. [2024-06-28 02:57:34,573 INFO L231 Difference]: Finished difference. Result has 207 places, 230 transitions, 2864 flow [2024-06-28 02:57:34,573 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2627, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2864, PETRI_PLACES=207, PETRI_TRANSITIONS=230} [2024-06-28 02:57:34,574 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 176 predicate places. [2024-06-28 02:57:34,574 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 230 transitions, 2864 flow [2024-06-28 02:57:34,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:34,574 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:34,574 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:34,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-28 02:57:34,575 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:57:34,575 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:34,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1562786191, now seen corresponding path program 3 times [2024-06-28 02:57:34,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:34,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815379221] [2024-06-28 02:57:34,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:34,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:34,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:35,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:57:35,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:35,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815379221] [2024-06-28 02:57:35,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815379221] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:35,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:35,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:57:35,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416760734] [2024-06-28 02:57:35,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:35,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:57:35,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:35,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:57:35,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:57:35,446 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 02:57:35,447 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 230 transitions, 2864 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:35,447 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:35,447 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 02:57:35,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:35,732 INFO L124 PetriNetUnfolderBase]: 636/1096 cut-off events. [2024-06-28 02:57:35,732 INFO L125 PetriNetUnfolderBase]: For 57341/57341 co-relation queries the response was YES. [2024-06-28 02:57:35,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7845 conditions, 1096 events. 636/1096 cut-off events. For 57341/57341 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 5229 event pairs, 80 based on Foata normal form. 1/1096 useless extension candidates. Maximal degree in co-relation 7752. Up to 929 conditions per place. [2024-06-28 02:57:35,740 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 187 selfloop transitions, 59 changer transitions 0/248 dead transitions. [2024-06-28 02:57:35,741 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 248 transitions, 3428 flow [2024-06-28 02:57:35,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:57:35,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:57:35,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 121 transitions. [2024-06-28 02:57:35,742 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.378125 [2024-06-28 02:57:35,742 INFO L175 Difference]: Start difference. First operand has 207 places, 230 transitions, 2864 flow. Second operand 10 states and 121 transitions. [2024-06-28 02:57:35,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 248 transitions, 3428 flow [2024-06-28 02:57:35,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 248 transitions, 3172 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-28 02:57:35,884 INFO L231 Difference]: Finished difference. Result has 208 places, 232 transitions, 2759 flow [2024-06-28 02:57:35,884 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2608, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2759, PETRI_PLACES=208, PETRI_TRANSITIONS=232} [2024-06-28 02:57:35,885 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 177 predicate places. [2024-06-28 02:57:35,885 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 232 transitions, 2759 flow [2024-06-28 02:57:35,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:35,885 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:35,885 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:35,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-28 02:57:35,885 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:57:35,886 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:35,886 INFO L85 PathProgramCache]: Analyzing trace with hash -1418889926, now seen corresponding path program 4 times [2024-06-28 02:57:35,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:35,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661702186] [2024-06-28 02:57:35,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:35,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:35,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:36,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:57:36,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:36,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661702186] [2024-06-28 02:57:36,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661702186] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:36,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:36,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:57:36,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497777505] [2024-06-28 02:57:36,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:36,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:57:36,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:36,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:57:36,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:57:36,623 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 02:57:36,624 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 232 transitions, 2759 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:36,624 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:36,624 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 02:57:36,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:36,994 INFO L124 PetriNetUnfolderBase]: 675/1159 cut-off events. [2024-06-28 02:57:36,995 INFO L125 PetriNetUnfolderBase]: For 71725/71725 co-relation queries the response was YES. [2024-06-28 02:57:37,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8386 conditions, 1159 events. 675/1159 cut-off events. For 71725/71725 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 5569 event pairs, 71 based on Foata normal form. 3/1161 useless extension candidates. Maximal degree in co-relation 8292. Up to 436 conditions per place. [2024-06-28 02:57:37,013 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 175 selfloop transitions, 99 changer transitions 0/276 dead transitions. [2024-06-28 02:57:37,014 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 276 transitions, 3909 flow [2024-06-28 02:57:37,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:57:37,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:57:37,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 141 transitions. [2024-06-28 02:57:37,015 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.440625 [2024-06-28 02:57:37,015 INFO L175 Difference]: Start difference. First operand has 208 places, 232 transitions, 2759 flow. Second operand 10 states and 141 transitions. [2024-06-28 02:57:37,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 276 transitions, 3909 flow [2024-06-28 02:57:37,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 276 transitions, 3774 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-28 02:57:37,223 INFO L231 Difference]: Finished difference. Result has 210 places, 238 transitions, 2916 flow [2024-06-28 02:57:37,223 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2624, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2916, PETRI_PLACES=210, PETRI_TRANSITIONS=238} [2024-06-28 02:57:37,224 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 179 predicate places. [2024-06-28 02:57:37,224 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 238 transitions, 2916 flow [2024-06-28 02:57:37,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:37,224 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:37,224 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:37,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-28 02:57:37,224 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:57:37,226 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:37,227 INFO L85 PathProgramCache]: Analyzing trace with hash -195776068, now seen corresponding path program 5 times [2024-06-28 02:57:37,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:37,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273907822] [2024-06-28 02:57:37,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:37,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:37,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:37,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:57:37,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:37,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273907822] [2024-06-28 02:57:37,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273907822] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:37,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:37,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:57:37,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661346850] [2024-06-28 02:57:37,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:37,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:57:37,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:37,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:57:37,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:57:37,993 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 02:57:37,993 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 238 transitions, 2916 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:37,993 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:37,994 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 02:57:37,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:38,331 INFO L124 PetriNetUnfolderBase]: 669/1150 cut-off events. [2024-06-28 02:57:38,332 INFO L125 PetriNetUnfolderBase]: For 69819/69819 co-relation queries the response was YES. [2024-06-28 02:57:38,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8331 conditions, 1150 events. 669/1150 cut-off events. For 69819/69819 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 5540 event pairs, 73 based on Foata normal form. 3/1152 useless extension candidates. Maximal degree in co-relation 8236. Up to 432 conditions per place. [2024-06-28 02:57:38,342 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 164 selfloop transitions, 103 changer transitions 0/269 dead transitions. [2024-06-28 02:57:38,343 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 269 transitions, 3817 flow [2024-06-28 02:57:38,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:57:38,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:57:38,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 136 transitions. [2024-06-28 02:57:38,344 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.425 [2024-06-28 02:57:38,344 INFO L175 Difference]: Start difference. First operand has 210 places, 238 transitions, 2916 flow. Second operand 10 states and 136 transitions. [2024-06-28 02:57:38,344 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 269 transitions, 3817 flow [2024-06-28 02:57:38,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 269 transitions, 3662 flow, removed 19 selfloop flow, removed 5 redundant places. [2024-06-28 02:57:38,489 INFO L231 Difference]: Finished difference. Result has 215 places, 238 transitions, 2977 flow [2024-06-28 02:57:38,489 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2761, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2977, PETRI_PLACES=215, PETRI_TRANSITIONS=238} [2024-06-28 02:57:38,490 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 184 predicate places. [2024-06-28 02:57:38,490 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 238 transitions, 2977 flow [2024-06-28 02:57:38,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:38,490 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:38,490 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:38,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-28 02:57:38,491 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:57:38,491 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:38,491 INFO L85 PathProgramCache]: Analyzing trace with hash -1054263497, now seen corresponding path program 4 times [2024-06-28 02:57:38,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:38,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571965943] [2024-06-28 02:57:38,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:38,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:38,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:39,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:57:39,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:39,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571965943] [2024-06-28 02:57:39,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571965943] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:39,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:39,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:57:39,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786237999] [2024-06-28 02:57:39,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:39,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:57:39,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:39,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:57:39,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:57:39,521 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 02:57:39,522 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 238 transitions, 2977 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:39,522 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:39,522 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 02:57:39,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:39,774 INFO L124 PetriNetUnfolderBase]: 672/1155 cut-off events. [2024-06-28 02:57:39,774 INFO L125 PetriNetUnfolderBase]: For 68798/68798 co-relation queries the response was YES. [2024-06-28 02:57:39,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8437 conditions, 1155 events. 672/1155 cut-off events. For 68798/68798 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 5564 event pairs, 85 based on Foata normal form. 1/1155 useless extension candidates. Maximal degree in co-relation 8341. Up to 988 conditions per place. [2024-06-28 02:57:39,785 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 199 selfloop transitions, 53 changer transitions 0/254 dead transitions. [2024-06-28 02:57:39,785 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 254 transitions, 3551 flow [2024-06-28 02:57:39,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:57:39,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:57:39,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2024-06-28 02:57:39,786 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.371875 [2024-06-28 02:57:39,786 INFO L175 Difference]: Start difference. First operand has 215 places, 238 transitions, 2977 flow. Second operand 10 states and 119 transitions. [2024-06-28 02:57:39,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 254 transitions, 3551 flow [2024-06-28 02:57:39,937 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 254 transitions, 3332 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-28 02:57:39,940 INFO L231 Difference]: Finished difference. Result has 216 places, 240 transitions, 2901 flow [2024-06-28 02:57:39,940 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2758, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2901, PETRI_PLACES=216, PETRI_TRANSITIONS=240} [2024-06-28 02:57:39,941 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 185 predicate places. [2024-06-28 02:57:39,941 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 240 transitions, 2901 flow [2024-06-28 02:57:39,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:39,941 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:39,941 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:39,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-28 02:57:39,941 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:57:39,942 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:39,942 INFO L85 PathProgramCache]: Analyzing trace with hash -1418895506, now seen corresponding path program 6 times [2024-06-28 02:57:39,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:39,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568404983] [2024-06-28 02:57:39,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:39,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:39,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:40,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:57:40,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:40,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568404983] [2024-06-28 02:57:40,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568404983] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:40,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:40,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:57:40,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175642826] [2024-06-28 02:57:40,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:40,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:57:40,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:40,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:57:40,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:57:40,673 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 02:57:40,674 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 240 transitions, 2901 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:40,674 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:40,674 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 02:57:40,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:41,044 INFO L124 PetriNetUnfolderBase]: 666/1146 cut-off events. [2024-06-28 02:57:41,044 INFO L125 PetriNetUnfolderBase]: For 68647/68647 co-relation queries the response was YES. [2024-06-28 02:57:41,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8116 conditions, 1146 events. 666/1146 cut-off events. For 68647/68647 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 5517 event pairs, 69 based on Foata normal form. 3/1148 useless extension candidates. Maximal degree in co-relation 8019. Up to 433 conditions per place. [2024-06-28 02:57:41,054 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 163 selfloop transitions, 107 changer transitions 0/272 dead transitions. [2024-06-28 02:57:41,055 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 272 transitions, 3702 flow [2024-06-28 02:57:41,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:57:41,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:57:41,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 138 transitions. [2024-06-28 02:57:41,056 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43125 [2024-06-28 02:57:41,056 INFO L175 Difference]: Start difference. First operand has 216 places, 240 transitions, 2901 flow. Second operand 10 states and 138 transitions. [2024-06-28 02:57:41,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 272 transitions, 3702 flow [2024-06-28 02:57:41,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 272 transitions, 3559 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-06-28 02:57:41,205 INFO L231 Difference]: Finished difference. Result has 218 places, 240 transitions, 2977 flow [2024-06-28 02:57:41,205 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2758, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2977, PETRI_PLACES=218, PETRI_TRANSITIONS=240} [2024-06-28 02:57:41,205 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 187 predicate places. [2024-06-28 02:57:41,206 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 240 transitions, 2977 flow [2024-06-28 02:57:41,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:41,206 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:41,206 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:41,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-28 02:57:41,206 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:57:41,206 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:41,207 INFO L85 PathProgramCache]: Analyzing trace with hash -1836658, now seen corresponding path program 7 times [2024-06-28 02:57:41,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:41,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568278437] [2024-06-28 02:57:41,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:41,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:41,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:41,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:57:41,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:41,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568278437] [2024-06-28 02:57:41,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568278437] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:41,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:41,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:57:41,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494210523] [2024-06-28 02:57:41,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:41,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:57:41,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:41,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:57:41,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:57:42,007 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 02:57:42,007 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 240 transitions, 2977 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:42,007 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:42,007 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 02:57:42,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:42,371 INFO L124 PetriNetUnfolderBase]: 705/1209 cut-off events. [2024-06-28 02:57:42,371 INFO L125 PetriNetUnfolderBase]: For 82766/82766 co-relation queries the response was YES. [2024-06-28 02:57:42,379 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8982 conditions, 1209 events. 705/1209 cut-off events. For 82766/82766 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 5883 event pairs, 87 based on Foata normal form. 3/1211 useless extension candidates. Maximal degree in co-relation 8884. Up to 465 conditions per place. [2024-06-28 02:57:42,433 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 188 selfloop transitions, 95 changer transitions 0/285 dead transitions. [2024-06-28 02:57:42,434 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 285 transitions, 4212 flow [2024-06-28 02:57:42,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:57:42,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:57:42,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 140 transitions. [2024-06-28 02:57:42,435 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-06-28 02:57:42,435 INFO L175 Difference]: Start difference. First operand has 218 places, 240 transitions, 2977 flow. Second operand 10 states and 140 transitions. [2024-06-28 02:57:42,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 285 transitions, 4212 flow [2024-06-28 02:57:42,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 285 transitions, 3974 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-28 02:57:42,603 INFO L231 Difference]: Finished difference. Result has 219 places, 246 transitions, 3039 flow [2024-06-28 02:57:42,603 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2751, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3039, PETRI_PLACES=219, PETRI_TRANSITIONS=246} [2024-06-28 02:57:42,604 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 188 predicate places. [2024-06-28 02:57:42,604 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 246 transitions, 3039 flow [2024-06-28 02:57:42,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:42,604 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:42,604 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:42,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-28 02:57:42,604 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:57:42,605 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:42,605 INFO L85 PathProgramCache]: Analyzing trace with hash -2038468, now seen corresponding path program 8 times [2024-06-28 02:57:42,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:42,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506666476] [2024-06-28 02:57:42,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:42,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:42,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:43,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:57:43,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:43,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506666476] [2024-06-28 02:57:43,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506666476] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:43,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:43,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:57:43,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672455152] [2024-06-28 02:57:43,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:43,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:57:43,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:43,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:57:43,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:57:43,403 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 02:57:43,404 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 246 transitions, 3039 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:43,404 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:43,404 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 02:57:43,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:43,781 INFO L124 PetriNetUnfolderBase]: 714/1224 cut-off events. [2024-06-28 02:57:43,782 INFO L125 PetriNetUnfolderBase]: For 85337/85337 co-relation queries the response was YES. [2024-06-28 02:57:43,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9056 conditions, 1224 events. 714/1224 cut-off events. For 85337/85337 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 5991 event pairs, 79 based on Foata normal form. 3/1226 useless extension candidates. Maximal degree in co-relation 8957. Up to 473 conditions per place. [2024-06-28 02:57:43,792 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 180 selfloop transitions, 101 changer transitions 0/283 dead transitions. [2024-06-28 02:57:43,792 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 283 transitions, 4172 flow [2024-06-28 02:57:43,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:57:43,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:57:43,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 139 transitions. [2024-06-28 02:57:43,793 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.434375 [2024-06-28 02:57:43,793 INFO L175 Difference]: Start difference. First operand has 219 places, 246 transitions, 3039 flow. Second operand 10 states and 139 transitions. [2024-06-28 02:57:43,793 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 283 transitions, 4172 flow [2024-06-28 02:57:43,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 283 transitions, 4021 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-06-28 02:57:43,970 INFO L231 Difference]: Finished difference. Result has 224 places, 248 transitions, 3132 flow [2024-06-28 02:57:43,970 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2892, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3132, PETRI_PLACES=224, PETRI_TRANSITIONS=248} [2024-06-28 02:57:43,971 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 193 predicate places. [2024-06-28 02:57:43,971 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 248 transitions, 3132 flow [2024-06-28 02:57:43,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:43,971 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:43,971 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:43,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-28 02:57:43,972 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:57:43,972 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:43,972 INFO L85 PathProgramCache]: Analyzing trace with hash 854593780, now seen corresponding path program 9 times [2024-06-28 02:57:43,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:43,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057295915] [2024-06-28 02:57:43,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:43,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:43,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:44,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:57:44,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:44,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057295915] [2024-06-28 02:57:44,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057295915] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:44,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:44,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:57:44,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564036822] [2024-06-28 02:57:44,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:44,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:57:44,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:44,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:57:44,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:57:44,678 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 02:57:44,679 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 248 transitions, 3132 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:44,679 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:44,679 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 02:57:44,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:44,970 INFO L124 PetriNetUnfolderBase]: 708/1215 cut-off events. [2024-06-28 02:57:44,970 INFO L125 PetriNetUnfolderBase]: For 82619/82619 co-relation queries the response was YES. [2024-06-28 02:57:44,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8877 conditions, 1215 events. 708/1215 cut-off events. For 82619/82619 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 5932 event pairs, 87 based on Foata normal form. 3/1217 useless extension candidates. Maximal degree in co-relation 8777. Up to 469 conditions per place. [2024-06-28 02:57:44,981 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 169 selfloop transitions, 106 changer transitions 0/277 dead transitions. [2024-06-28 02:57:44,981 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 277 transitions, 4065 flow [2024-06-28 02:57:44,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:57:44,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:57:44,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 134 transitions. [2024-06-28 02:57:44,982 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41875 [2024-06-28 02:57:44,982 INFO L175 Difference]: Start difference. First operand has 224 places, 248 transitions, 3132 flow. Second operand 10 states and 134 transitions. [2024-06-28 02:57:44,982 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 277 transitions, 4065 flow [2024-06-28 02:57:45,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 277 transitions, 3851 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-06-28 02:57:45,187 INFO L231 Difference]: Finished difference. Result has 227 places, 248 transitions, 3138 flow [2024-06-28 02:57:45,188 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2918, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3138, PETRI_PLACES=227, PETRI_TRANSITIONS=248} [2024-06-28 02:57:45,188 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 196 predicate places. [2024-06-28 02:57:45,188 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 248 transitions, 3138 flow [2024-06-28 02:57:45,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:45,189 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:45,189 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:45,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-28 02:57:45,189 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:57:45,189 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:45,189 INFO L85 PathProgramCache]: Analyzing trace with hash -359041935, now seen corresponding path program 1 times [2024-06-28 02:57:45,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:45,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985284799] [2024-06-28 02:57:45,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:45,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:45,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:46,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:57:46,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:46,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985284799] [2024-06-28 02:57:46,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985284799] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:46,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:46,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:57:46,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769164873] [2024-06-28 02:57:46,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:46,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:57:46,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:46,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:57:46,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:57:46,159 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 02:57:46,160 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 248 transitions, 3138 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:46,160 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:46,160 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 02:57:46,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:46,488 INFO L124 PetriNetUnfolderBase]: 645/1135 cut-off events. [2024-06-28 02:57:46,489 INFO L125 PetriNetUnfolderBase]: For 83701/83720 co-relation queries the response was YES. [2024-06-28 02:57:46,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8509 conditions, 1135 events. 645/1135 cut-off events. For 83701/83720 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 5704 event pairs, 82 based on Foata normal form. 3/1116 useless extension candidates. Maximal degree in co-relation 8408. Up to 986 conditions per place. [2024-06-28 02:57:46,499 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 197 selfloop transitions, 32 changer transitions 0/263 dead transitions. [2024-06-28 02:57:46,499 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 263 transitions, 3649 flow [2024-06-28 02:57:46,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:57:46,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:57:46,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 115 transitions. [2024-06-28 02:57:46,500 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3993055555555556 [2024-06-28 02:57:46,500 INFO L175 Difference]: Start difference. First operand has 227 places, 248 transitions, 3138 flow. Second operand 9 states and 115 transitions. [2024-06-28 02:57:46,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 263 transitions, 3649 flow [2024-06-28 02:57:46,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 263 transitions, 3399 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-28 02:57:46,691 INFO L231 Difference]: Finished difference. Result has 227 places, 250 transitions, 2990 flow [2024-06-28 02:57:46,691 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2888, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2990, PETRI_PLACES=227, PETRI_TRANSITIONS=250} [2024-06-28 02:57:46,691 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 196 predicate places. [2024-06-28 02:57:46,692 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 250 transitions, 2990 flow [2024-06-28 02:57:46,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:46,692 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:46,692 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:46,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-28 02:57:46,692 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:57:46,693 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:46,693 INFO L85 PathProgramCache]: Analyzing trace with hash -366676212, now seen corresponding path program 10 times [2024-06-28 02:57:46,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:46,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950460371] [2024-06-28 02:57:46,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:46,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:46,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:47,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:57:47,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:47,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950460371] [2024-06-28 02:57:47,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950460371] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:47,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:47,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:57:47,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948848822] [2024-06-28 02:57:47,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:47,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:57:47,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:47,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:57:47,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:57:47,286 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 02:57:47,287 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 250 transitions, 2990 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:47,287 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:47,287 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 02:57:47,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:47,633 INFO L124 PetriNetUnfolderBase]: 706/1214 cut-off events. [2024-06-28 02:57:47,633 INFO L125 PetriNetUnfolderBase]: For 80277/80277 co-relation queries the response was YES. [2024-06-28 02:57:47,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8527 conditions, 1214 events. 706/1214 cut-off events. For 80277/80277 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 5956 event pairs, 77 based on Foata normal form. 3/1216 useless extension candidates. Maximal degree in co-relation 8424. Up to 473 conditions per place. [2024-06-28 02:57:47,645 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 168 selfloop transitions, 109 changer transitions 0/279 dead transitions. [2024-06-28 02:57:47,645 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 279 transitions, 3802 flow [2024-06-28 02:57:47,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:57:47,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:57:47,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 136 transitions. [2024-06-28 02:57:47,660 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.425 [2024-06-28 02:57:47,660 INFO L175 Difference]: Start difference. First operand has 227 places, 250 transitions, 2990 flow. Second operand 10 states and 136 transitions. [2024-06-28 02:57:47,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 279 transitions, 3802 flow [2024-06-28 02:57:47,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 279 transitions, 3687 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-28 02:57:47,845 INFO L231 Difference]: Finished difference. Result has 230 places, 250 transitions, 3098 flow [2024-06-28 02:57:47,846 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2875, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3098, PETRI_PLACES=230, PETRI_TRANSITIONS=250} [2024-06-28 02:57:47,846 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 199 predicate places. [2024-06-28 02:57:47,846 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 250 transitions, 3098 flow [2024-06-28 02:57:47,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:47,846 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:47,847 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:47,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-28 02:57:47,847 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:57:47,847 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:47,847 INFO L85 PathProgramCache]: Analyzing trace with hash -366676367, now seen corresponding path program 5 times [2024-06-28 02:57:47,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:47,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063515131] [2024-06-28 02:57:47,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:47,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:47,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:48,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:57:48,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:48,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063515131] [2024-06-28 02:57:48,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063515131] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:48,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:48,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:57:48,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057176913] [2024-06-28 02:57:48,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:48,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:57:48,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:48,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:57:48,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:57:48,632 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 02:57:48,633 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 250 transitions, 3098 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:48,633 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:48,633 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 02:57:48,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:48,885 INFO L124 PetriNetUnfolderBase]: 709/1219 cut-off events. [2024-06-28 02:57:48,886 INFO L125 PetriNetUnfolderBase]: For 78383/78383 co-relation queries the response was YES. [2024-06-28 02:57:48,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8738 conditions, 1219 events. 709/1219 cut-off events. For 78383/78383 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 5980 event pairs, 92 based on Foata normal form. 1/1219 useless extension candidates. Maximal degree in co-relation 8635. Up to 1052 conditions per place. [2024-06-28 02:57:48,896 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 213 selfloop transitions, 49 changer transitions 0/264 dead transitions. [2024-06-28 02:57:48,896 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 264 transitions, 3690 flow [2024-06-28 02:57:48,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:57:48,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:57:48,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 117 transitions. [2024-06-28 02:57:48,897 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.365625 [2024-06-28 02:57:48,897 INFO L175 Difference]: Start difference. First operand has 230 places, 250 transitions, 3098 flow. Second operand 10 states and 117 transitions. [2024-06-28 02:57:48,897 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 264 transitions, 3690 flow [2024-06-28 02:57:49,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 264 transitions, 3462 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-28 02:57:49,100 INFO L231 Difference]: Finished difference. Result has 231 places, 252 transitions, 3009 flow [2024-06-28 02:57:49,100 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2870, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3009, PETRI_PLACES=231, PETRI_TRANSITIONS=252} [2024-06-28 02:57:49,100 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 200 predicate places. [2024-06-28 02:57:49,100 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 252 transitions, 3009 flow [2024-06-28 02:57:49,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:49,101 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:49,101 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:49,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-28 02:57:49,101 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:57:49,101 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:49,101 INFO L85 PathProgramCache]: Analyzing trace with hash 989979642, now seen corresponding path program 11 times [2024-06-28 02:57:49,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:49,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131169407] [2024-06-28 02:57:49,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:49,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:49,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:49,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:57:49,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:49,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131169407] [2024-06-28 02:57:49,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131169407] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:49,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:49,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:57:49,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949728125] [2024-06-28 02:57:49,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:49,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:57:49,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:49,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:57:49,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:57:49,770 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 02:57:49,771 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 252 transitions, 3009 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:49,771 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:49,771 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 02:57:49,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:50,145 INFO L124 PetriNetUnfolderBase]: 733/1258 cut-off events. [2024-06-28 02:57:50,145 INFO L125 PetriNetUnfolderBase]: For 91607/91607 co-relation queries the response was YES. [2024-06-28 02:57:50,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9012 conditions, 1258 events. 733/1258 cut-off events. For 91607/91607 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 6232 event pairs, 137 based on Foata normal form. 3/1260 useless extension candidates. Maximal degree in co-relation 8908. Up to 1071 conditions per place. [2024-06-28 02:57:50,155 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 236 selfloop transitions, 40 changer transitions 0/278 dead transitions. [2024-06-28 02:57:50,155 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 278 transitions, 3972 flow [2024-06-28 02:57:50,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:57:50,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:57:50,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-28 02:57:50,156 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3875 [2024-06-28 02:57:50,156 INFO L175 Difference]: Start difference. First operand has 231 places, 252 transitions, 3009 flow. Second operand 10 states and 124 transitions. [2024-06-28 02:57:50,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 278 transitions, 3972 flow [2024-06-28 02:57:50,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 278 transitions, 3849 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-28 02:57:50,384 INFO L231 Difference]: Finished difference. Result has 233 places, 256 transitions, 3036 flow [2024-06-28 02:57:50,384 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2886, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3036, PETRI_PLACES=233, PETRI_TRANSITIONS=256} [2024-06-28 02:57:50,385 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 202 predicate places. [2024-06-28 02:57:50,385 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 256 transitions, 3036 flow [2024-06-28 02:57:50,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:50,385 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:50,385 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:50,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-28 02:57:50,386 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:57:50,386 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:50,386 INFO L85 PathProgramCache]: Analyzing trace with hash 632838355, now seen corresponding path program 2 times [2024-06-28 02:57:50,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:50,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145184370] [2024-06-28 02:57:50,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:50,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:50,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:51,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:57:51,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:51,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145184370] [2024-06-28 02:57:51,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145184370] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:51,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:51,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:57:51,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809182006] [2024-06-28 02:57:51,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:51,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:57:51,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:51,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:57:51,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:57:51,440 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 02:57:51,441 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 256 transitions, 3036 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:51,441 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:51,441 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 02:57:51,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:51,863 INFO L124 PetriNetUnfolderBase]: 670/1181 cut-off events. [2024-06-28 02:57:51,863 INFO L125 PetriNetUnfolderBase]: For 93284/93299 co-relation queries the response was YES. [2024-06-28 02:57:51,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8663 conditions, 1181 events. 670/1181 cut-off events. For 93284/93299 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 6039 event pairs, 113 based on Foata normal form. 3/1164 useless extension candidates. Maximal degree in co-relation 8558. Up to 1078 conditions per place. [2024-06-28 02:57:51,876 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 220 selfloop transitions, 14 changer transitions 0/268 dead transitions. [2024-06-28 02:57:51,877 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 268 transitions, 3551 flow [2024-06-28 02:57:51,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:57:51,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:57:51,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 106 transitions. [2024-06-28 02:57:51,878 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3680555555555556 [2024-06-28 02:57:51,878 INFO L175 Difference]: Start difference. First operand has 233 places, 256 transitions, 3036 flow. Second operand 9 states and 106 transitions. [2024-06-28 02:57:51,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 268 transitions, 3551 flow [2024-06-28 02:57:52,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 268 transitions, 3315 flow, removed 11 selfloop flow, removed 9 redundant places. [2024-06-28 02:57:52,173 INFO L231 Difference]: Finished difference. Result has 234 places, 258 transitions, 2864 flow [2024-06-28 02:57:52,174 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2800, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2864, PETRI_PLACES=234, PETRI_TRANSITIONS=258} [2024-06-28 02:57:52,174 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 203 predicate places. [2024-06-28 02:57:52,174 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 258 transitions, 2864 flow [2024-06-28 02:57:52,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:52,175 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:52,175 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:52,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-28 02:57:52,175 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:57:52,175 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:52,175 INFO L85 PathProgramCache]: Analyzing trace with hash 384676977, now seen corresponding path program 3 times [2024-06-28 02:57:52,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:52,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678819446] [2024-06-28 02:57:52,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:52,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:52,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:53,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:57:53,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:53,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678819446] [2024-06-28 02:57:53,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678819446] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:53,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:53,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:57:53,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6119399] [2024-06-28 02:57:53,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:53,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:57:53,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:53,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:57:53,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:57:53,424 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 02:57:53,424 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 258 transitions, 2864 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:53,424 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:53,424 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 02:57:53,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:53,803 INFO L124 PetriNetUnfolderBase]: 677/1190 cut-off events. [2024-06-28 02:57:53,804 INFO L125 PetriNetUnfolderBase]: For 94949/94968 co-relation queries the response was YES. [2024-06-28 02:57:53,811 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8556 conditions, 1190 events. 677/1190 cut-off events. For 94949/94968 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 6079 event pairs, 107 based on Foata normal form. 3/1168 useless extension candidates. Maximal degree in co-relation 8449. Up to 1070 conditions per place. [2024-06-28 02:57:53,815 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 219 selfloop transitions, 21 changer transitions 0/274 dead transitions. [2024-06-28 02:57:53,815 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 274 transitions, 3404 flow [2024-06-28 02:57:53,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:57:53,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:57:53,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 111 transitions. [2024-06-28 02:57:53,816 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3854166666666667 [2024-06-28 02:57:53,816 INFO L175 Difference]: Start difference. First operand has 234 places, 258 transitions, 2864 flow. Second operand 9 states and 111 transitions. [2024-06-28 02:57:53,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 274 transitions, 3404 flow [2024-06-28 02:57:54,055 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 274 transitions, 3362 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-28 02:57:54,059 INFO L231 Difference]: Finished difference. Result has 239 places, 263 transitions, 2929 flow [2024-06-28 02:57:54,059 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2822, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2929, PETRI_PLACES=239, PETRI_TRANSITIONS=263} [2024-06-28 02:57:54,059 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 208 predicate places. [2024-06-28 02:57:54,059 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 263 transitions, 2929 flow [2024-06-28 02:57:54,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:54,060 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:54,060 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:54,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-28 02:57:54,060 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:57:54,060 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:54,060 INFO L85 PathProgramCache]: Analyzing trace with hash -1508357900, now seen corresponding path program 12 times [2024-06-28 02:57:54,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:54,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399515402] [2024-06-28 02:57:54,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:54,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:54,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:54,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:57:54,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:54,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399515402] [2024-06-28 02:57:54,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399515402] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:54,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:54,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:57:54,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482223904] [2024-06-28 02:57:54,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:54,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:57:54,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:54,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:57:54,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:57:54,811 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 02:57:54,811 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 263 transitions, 2929 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:54,811 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:54,812 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 02:57:54,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:55,144 INFO L124 PetriNetUnfolderBase]: 753/1294 cut-off events. [2024-06-28 02:57:55,144 INFO L125 PetriNetUnfolderBase]: For 98868/98868 co-relation queries the response was YES. [2024-06-28 02:57:55,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9233 conditions, 1294 events. 753/1294 cut-off events. For 98868/98868 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 6451 event pairs, 146 based on Foata normal form. 3/1296 useless extension candidates. Maximal degree in co-relation 9123. Up to 1229 conditions per place. [2024-06-28 02:57:55,156 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 259 selfloop transitions, 20 changer transitions 0/281 dead transitions. [2024-06-28 02:57:55,156 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 281 transitions, 3575 flow [2024-06-28 02:57:55,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:57:55,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:57:55,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 114 transitions. [2024-06-28 02:57:55,157 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35625 [2024-06-28 02:57:55,157 INFO L175 Difference]: Start difference. First operand has 239 places, 263 transitions, 2929 flow. Second operand 10 states and 114 transitions. [2024-06-28 02:57:55,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 281 transitions, 3575 flow [2024-06-28 02:57:55,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 281 transitions, 3521 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-06-28 02:57:55,385 INFO L231 Difference]: Finished difference. Result has 243 places, 265 transitions, 2953 flow [2024-06-28 02:57:55,386 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2875, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2953, PETRI_PLACES=243, PETRI_TRANSITIONS=265} [2024-06-28 02:57:55,386 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 212 predicate places. [2024-06-28 02:57:55,386 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 265 transitions, 2953 flow [2024-06-28 02:57:55,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:55,386 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:55,386 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:55,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-28 02:57:55,387 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:57:55,387 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:55,387 INFO L85 PathProgramCache]: Analyzing trace with hash -1763669118, now seen corresponding path program 13 times [2024-06-28 02:57:55,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:55,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328703360] [2024-06-28 02:57:55,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:55,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:55,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:55,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:57:55,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:55,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328703360] [2024-06-28 02:57:55,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328703360] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:55,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:55,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:57:55,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876039186] [2024-06-28 02:57:55,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:55,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:57:55,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:55,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:57:55,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:57:55,992 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 02:57:55,993 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 265 transitions, 2953 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:55,993 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:55,993 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 02:57:55,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:56,320 INFO L124 PetriNetUnfolderBase]: 762/1309 cut-off events. [2024-06-28 02:57:56,320 INFO L125 PetriNetUnfolderBase]: For 101623/101623 co-relation queries the response was YES. [2024-06-28 02:57:56,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9336 conditions, 1309 events. 762/1309 cut-off events. For 101623/101623 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 6542 event pairs, 137 based on Foata normal form. 3/1311 useless extension candidates. Maximal degree in co-relation 9227. Up to 1108 conditions per place. [2024-06-28 02:57:56,333 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 249 selfloop transitions, 40 changer transitions 0/291 dead transitions. [2024-06-28 02:57:56,333 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 291 transitions, 3954 flow [2024-06-28 02:57:56,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:57:56,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:57:56,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2024-06-28 02:57:56,334 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-28 02:57:56,334 INFO L175 Difference]: Start difference. First operand has 243 places, 265 transitions, 2953 flow. Second operand 10 states and 125 transitions. [2024-06-28 02:57:56,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 291 transitions, 3954 flow [2024-06-28 02:57:56,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 291 transitions, 3890 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-28 02:57:56,578 INFO L231 Difference]: Finished difference. Result has 245 places, 267 transitions, 3013 flow [2024-06-28 02:57:56,578 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2895, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3013, PETRI_PLACES=245, PETRI_TRANSITIONS=267} [2024-06-28 02:57:56,578 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 214 predicate places. [2024-06-28 02:57:56,579 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 267 transitions, 3013 flow [2024-06-28 02:57:56,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:56,579 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:56,579 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:56,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-28 02:57:56,579 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:57:56,580 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:56,580 INFO L85 PathProgramCache]: Analyzing trace with hash -1763876508, now seen corresponding path program 14 times [2024-06-28 02:57:56,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:56,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863690734] [2024-06-28 02:57:56,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:56,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:56,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:57,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:57:57,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:57,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863690734] [2024-06-28 02:57:57,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863690734] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:57,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:57,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:57:57,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27957516] [2024-06-28 02:57:57,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:57,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:57:57,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:57,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:57:57,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:57:57,154 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 02:57:57,154 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 267 transitions, 3013 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:57,154 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:57,154 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 02:57:57,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:57,515 INFO L124 PetriNetUnfolderBase]: 756/1300 cut-off events. [2024-06-28 02:57:57,516 INFO L125 PetriNetUnfolderBase]: For 96833/96833 co-relation queries the response was YES. [2024-06-28 02:57:57,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9117 conditions, 1300 events. 756/1300 cut-off events. For 96833/96833 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 6510 event pairs, 133 based on Foata normal form. 3/1302 useless extension candidates. Maximal degree in co-relation 9007. Up to 1104 conditions per place. [2024-06-28 02:57:57,526 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 234 selfloop transitions, 50 changer transitions 0/286 dead transitions. [2024-06-28 02:57:57,527 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 286 transitions, 3793 flow [2024-06-28 02:57:57,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:57:57,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:57:57,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 122 transitions. [2024-06-28 02:57:57,528 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38125 [2024-06-28 02:57:57,528 INFO L175 Difference]: Start difference. First operand has 245 places, 267 transitions, 3013 flow. Second operand 10 states and 122 transitions. [2024-06-28 02:57:57,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 286 transitions, 3793 flow [2024-06-28 02:57:57,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 286 transitions, 3694 flow, removed 20 selfloop flow, removed 7 redundant places. [2024-06-28 02:57:57,764 INFO L231 Difference]: Finished difference. Result has 248 places, 267 transitions, 3019 flow [2024-06-28 02:57:57,765 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2914, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3019, PETRI_PLACES=248, PETRI_TRANSITIONS=267} [2024-06-28 02:57:57,765 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 217 predicate places. [2024-06-28 02:57:57,765 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 267 transitions, 3019 flow [2024-06-28 02:57:57,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:57,765 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:57,765 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:57,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-28 02:57:57,766 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:57:57,766 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:57,766 INFO L85 PathProgramCache]: Analyzing trace with hash 384399930, now seen corresponding path program 15 times [2024-06-28 02:57:57,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:57,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393742259] [2024-06-28 02:57:57,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:57,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:57,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:58,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:57:58,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:58,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393742259] [2024-06-28 02:57:58,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393742259] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:58,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:58,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:57:58,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108171666] [2024-06-28 02:57:58,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:58,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:57:58,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:58,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:57:58,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:57:58,480 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 02:57:58,480 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 267 transitions, 3019 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:58,480 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:58,481 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 02:57:58,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:58,870 INFO L124 PetriNetUnfolderBase]: 750/1291 cut-off events. [2024-06-28 02:57:58,870 INFO L125 PetriNetUnfolderBase]: For 91638/91638 co-relation queries the response was YES. [2024-06-28 02:57:58,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8868 conditions, 1291 events. 750/1291 cut-off events. For 91638/91638 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 6446 event pairs, 141 based on Foata normal form. 3/1293 useless extension candidates. Maximal degree in co-relation 8757. Up to 1100 conditions per place. [2024-06-28 02:57:58,883 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 250 selfloop transitions, 38 changer transitions 0/290 dead transitions. [2024-06-28 02:57:58,883 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 290 transitions, 3701 flow [2024-06-28 02:57:58,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:57:58,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:57:58,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-28 02:57:58,891 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3875 [2024-06-28 02:57:58,891 INFO L175 Difference]: Start difference. First operand has 248 places, 267 transitions, 3019 flow. Second operand 10 states and 124 transitions. [2024-06-28 02:57:58,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 290 transitions, 3701 flow [2024-06-28 02:57:59,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 290 transitions, 3596 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-28 02:57:59,115 INFO L231 Difference]: Finished difference. Result has 250 places, 267 transitions, 2996 flow [2024-06-28 02:57:59,115 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2914, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2996, PETRI_PLACES=250, PETRI_TRANSITIONS=267} [2024-06-28 02:57:59,115 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 219 predicate places. [2024-06-28 02:57:59,115 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 267 transitions, 2996 flow [2024-06-28 02:57:59,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:59,116 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:59,116 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:59,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-28 02:57:59,116 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:57:59,116 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:59,116 INFO L85 PathProgramCache]: Analyzing trace with hash 377042545, now seen corresponding path program 6 times [2024-06-28 02:57:59,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:59,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968984620] [2024-06-28 02:57:59,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:59,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:59,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:59,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:57:59,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:59,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968984620] [2024-06-28 02:57:59,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968984620] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:59,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:59,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:57:59,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811589347] [2024-06-28 02:57:59,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:59,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:57:59,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:59,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:57:59,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:57:59,970 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 02:57:59,970 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 267 transitions, 2996 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:59,970 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:59,970 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 02:57:59,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:58:00,283 INFO L124 PetriNetUnfolderBase]: 748/1288 cut-off events. [2024-06-28 02:58:00,283 INFO L125 PetriNetUnfolderBase]: For 85195/85195 co-relation queries the response was YES. [2024-06-28 02:58:00,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8767 conditions, 1288 events. 748/1288 cut-off events. For 85195/85195 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 6427 event pairs, 151 based on Foata normal form. 1/1288 useless extension candidates. Maximal degree in co-relation 8655. Up to 1259 conditions per place. [2024-06-28 02:58:00,294 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 259 selfloop transitions, 17 changer transitions 0/278 dead transitions. [2024-06-28 02:58:00,295 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 278 transitions, 3604 flow [2024-06-28 02:58:00,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:58:00,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:58:00,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-28 02:58:00,296 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33125 [2024-06-28 02:58:00,296 INFO L175 Difference]: Start difference. First operand has 250 places, 267 transitions, 2996 flow. Second operand 10 states and 106 transitions. [2024-06-28 02:58:00,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 278 transitions, 3604 flow [2024-06-28 02:58:00,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 278 transitions, 3471 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-28 02:58:00,525 INFO L231 Difference]: Finished difference. Result has 249 places, 269 transitions, 2942 flow [2024-06-28 02:58:00,525 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2863, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2942, PETRI_PLACES=249, PETRI_TRANSITIONS=269} [2024-06-28 02:58:00,525 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 218 predicate places. [2024-06-28 02:58:00,525 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 269 transitions, 2942 flow [2024-06-28 02:58:00,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:00,526 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:58:00,526 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:58:00,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-28 02:58:00,526 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:58:00,526 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:58:00,526 INFO L85 PathProgramCache]: Analyzing trace with hash -1497954261, now seen corresponding path program 4 times [2024-06-28 02:58:00,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:58:00,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189315505] [2024-06-28 02:58:00,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:58:00,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:58:00,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:58:01,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:58:01,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:58:01,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189315505] [2024-06-28 02:58:01,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189315505] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:58:01,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:58:01,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:58:01,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731664326] [2024-06-28 02:58:01,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:58:01,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:58:01,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:58:01,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:58:01,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:58:01,541 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 02:58:01,541 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 269 transitions, 2942 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:01,541 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:58:01,542 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 02:58:01,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:58:01,863 INFO L124 PetriNetUnfolderBase]: 685/1211 cut-off events. [2024-06-28 02:58:01,864 INFO L125 PetriNetUnfolderBase]: For 91416/91431 co-relation queries the response was YES. [2024-06-28 02:58:01,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8339 conditions, 1211 events. 685/1211 cut-off events. For 91416/91431 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 6260 event pairs, 112 based on Foata normal form. 3/1193 useless extension candidates. Maximal degree in co-relation 8226. Up to 1108 conditions per place. [2024-06-28 02:58:01,874 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 232 selfloop transitions, 14 changer transitions 0/280 dead transitions. [2024-06-28 02:58:01,874 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 280 transitions, 3478 flow [2024-06-28 02:58:01,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:58:01,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:58:01,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 106 transitions. [2024-06-28 02:58:01,875 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3680555555555556 [2024-06-28 02:58:01,875 INFO L175 Difference]: Start difference. First operand has 249 places, 269 transitions, 2942 flow. Second operand 9 states and 106 transitions. [2024-06-28 02:58:01,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 280 transitions, 3478 flow [2024-06-28 02:58:02,170 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 280 transitions, 3415 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-28 02:58:02,173 INFO L231 Difference]: Finished difference. Result has 250 places, 270 transitions, 2933 flow [2024-06-28 02:58:02,173 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2879, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2933, PETRI_PLACES=250, PETRI_TRANSITIONS=270} [2024-06-28 02:58:02,174 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 219 predicate places. [2024-06-28 02:58:02,174 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 270 transitions, 2933 flow [2024-06-28 02:58:02,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:02,174 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:58:02,174 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:58:02,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-28 02:58:02,174 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:58:02,175 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:58:02,175 INFO L85 PathProgramCache]: Analyzing trace with hash -1194391543, now seen corresponding path program 1 times [2024-06-28 02:58:02,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:58:02,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969210144] [2024-06-28 02:58:02,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:58:02,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:58:02,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:58:02,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:58:02,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:58:02,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969210144] [2024-06-28 02:58:02,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969210144] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:58:02,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:58:02,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:58:02,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908718949] [2024-06-28 02:58:02,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:58:02,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:58:02,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:58:02,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:58:02,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:58:02,971 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 02:58:02,972 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 270 transitions, 2933 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:02,972 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:58:02,972 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 02:58:02,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:58:03,316 INFO L124 PetriNetUnfolderBase]: 756/1303 cut-off events. [2024-06-28 02:58:03,316 INFO L125 PetriNetUnfolderBase]: For 89599/89599 co-relation queries the response was YES. [2024-06-28 02:58:03,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8707 conditions, 1303 events. 756/1303 cut-off events. For 89599/89599 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 6544 event pairs, 142 based on Foata normal form. 2/1304 useless extension candidates. Maximal degree in co-relation 8593. Up to 1261 conditions per place. [2024-06-28 02:58:03,325 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 267 selfloop transitions, 17 changer transitions 0/286 dead transitions. [2024-06-28 02:58:03,325 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 286 transitions, 3567 flow [2024-06-28 02:58:03,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:58:03,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:58:03,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-28 02:58:03,327 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.340625 [2024-06-28 02:58:03,327 INFO L175 Difference]: Start difference. First operand has 250 places, 270 transitions, 2933 flow. Second operand 10 states and 109 transitions. [2024-06-28 02:58:03,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 286 transitions, 3567 flow [2024-06-28 02:58:03,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 286 transitions, 3514 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-28 02:58:03,552 INFO L231 Difference]: Finished difference. Result has 254 places, 274 transitions, 2964 flow [2024-06-28 02:58:03,552 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2880, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2964, PETRI_PLACES=254, PETRI_TRANSITIONS=274} [2024-06-28 02:58:03,552 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 223 predicate places. [2024-06-28 02:58:03,552 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 274 transitions, 2964 flow [2024-06-28 02:58:03,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:03,553 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:58:03,553 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:58:03,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-28 02:58:03,553 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:58:03,553 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:58:03,553 INFO L85 PathProgramCache]: Analyzing trace with hash -1183339733, now seen corresponding path program 5 times [2024-06-28 02:58:03,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:58:03,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894643139] [2024-06-28 02:58:03,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:58:03,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:58:03,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:58:04,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:58:04,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:58:04,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894643139] [2024-06-28 02:58:04,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894643139] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:58:04,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:58:04,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:58:04,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346266008] [2024-06-28 02:58:04,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:58:04,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:58:04,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:58:04,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:58:04,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:58:04,398 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 02:58:04,398 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 274 transitions, 2964 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:04,398 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:58:04,398 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 02:58:04,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:58:04,826 INFO L124 PetriNetUnfolderBase]: 692/1225 cut-off events. [2024-06-28 02:58:04,827 INFO L125 PetriNetUnfolderBase]: For 92921/92936 co-relation queries the response was YES. [2024-06-28 02:58:04,836 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8396 conditions, 1225 events. 692/1225 cut-off events. For 92921/92936 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 6372 event pairs, 109 based on Foata normal form. 3/1208 useless extension candidates. Maximal degree in co-relation 8280. Up to 1108 conditions per place. [2024-06-28 02:58:04,840 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 232 selfloop transitions, 18 changer transitions 0/285 dead transitions. [2024-06-28 02:58:04,841 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 285 transitions, 3510 flow [2024-06-28 02:58:04,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:58:04,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:58:04,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 107 transitions. [2024-06-28 02:58:04,842 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3715277777777778 [2024-06-28 02:58:04,842 INFO L175 Difference]: Start difference. First operand has 254 places, 274 transitions, 2964 flow. Second operand 9 states and 107 transitions. [2024-06-28 02:58:04,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 285 transitions, 3510 flow [2024-06-28 02:58:05,116 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 285 transitions, 3460 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-28 02:58:05,119 INFO L231 Difference]: Finished difference. Result has 256 places, 275 transitions, 2980 flow [2024-06-28 02:58:05,119 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2914, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2980, PETRI_PLACES=256, PETRI_TRANSITIONS=275} [2024-06-28 02:58:05,119 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 225 predicate places. [2024-06-28 02:58:05,120 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 275 transitions, 2980 flow [2024-06-28 02:58:05,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:05,120 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:58:05,120 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:58:05,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-28 02:58:05,120 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:58:05,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:58:05,121 INFO L85 PathProgramCache]: Analyzing trace with hash -1182953783, now seen corresponding path program 6 times [2024-06-28 02:58:05,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:58:05,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798763795] [2024-06-28 02:58:05,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:58:05,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:58:05,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:58:05,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:58:05,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:58:05,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798763795] [2024-06-28 02:58:05,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798763795] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:58:05,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:58:05,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:58:05,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078619927] [2024-06-28 02:58:05,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:58:05,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:58:05,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:58:05,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:58:05,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:58:06,067 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 02:58:06,067 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 275 transitions, 2980 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:06,067 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:58:06,067 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 02:58:06,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:58:06,462 INFO L124 PetriNetUnfolderBase]: 689/1222 cut-off events. [2024-06-28 02:58:06,462 INFO L125 PetriNetUnfolderBase]: For 88914/88927 co-relation queries the response was YES. [2024-06-28 02:58:06,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8243 conditions, 1222 events. 689/1222 cut-off events. For 88914/88927 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 6343 event pairs, 108 based on Foata normal form. 3/1207 useless extension candidates. Maximal degree in co-relation 8126. Up to 1110 conditions per place. [2024-06-28 02:58:06,474 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 236 selfloop transitions, 14 changer transitions 0/285 dead transitions. [2024-06-28 02:58:06,474 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 285 transitions, 3502 flow [2024-06-28 02:58:06,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:58:06,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:58:06,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 105 transitions. [2024-06-28 02:58:06,475 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3645833333333333 [2024-06-28 02:58:06,475 INFO L175 Difference]: Start difference. First operand has 256 places, 275 transitions, 2980 flow. Second operand 9 states and 105 transitions. [2024-06-28 02:58:06,475 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 285 transitions, 3502 flow [2024-06-28 02:58:06,767 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 285 transitions, 3448 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-28 02:58:06,770 INFO L231 Difference]: Finished difference. Result has 258 places, 275 transitions, 2958 flow [2024-06-28 02:58:06,770 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2926, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2958, PETRI_PLACES=258, PETRI_TRANSITIONS=275} [2024-06-28 02:58:06,770 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 227 predicate places. [2024-06-28 02:58:06,771 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 275 transitions, 2958 flow [2024-06-28 02:58:06,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:06,771 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:58:06,771 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:58:06,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-28 02:58:06,771 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:58:06,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:58:06,772 INFO L85 PathProgramCache]: Analyzing trace with hash 1393783719, now seen corresponding path program 1 times [2024-06-28 02:58:06,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:58:06,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87239487] [2024-06-28 02:58:06,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:58:06,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:58:06,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:58:07,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:58:07,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:58:07,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87239487] [2024-06-28 02:58:07,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87239487] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:58:07,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:58:07,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:58:07,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514182349] [2024-06-28 02:58:07,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:58:07,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:58:07,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:58:07,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:58:07,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:58:07,848 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 02:58:07,849 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 275 transitions, 2958 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:07,849 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:58:07,849 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 02:58:07,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:58:08,266 INFO L124 PetriNetUnfolderBase]: 768/1327 cut-off events. [2024-06-28 02:58:08,266 INFO L125 PetriNetUnfolderBase]: For 94261/94261 co-relation queries the response was YES. [2024-06-28 02:58:08,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8919 conditions, 1327 events. 768/1327 cut-off events. For 94261/94261 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 6742 event pairs, 84 based on Foata normal form. 2/1328 useless extension candidates. Maximal degree in co-relation 8801. Up to 1195 conditions per place. [2024-06-28 02:58:08,277 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 264 selfloop transitions, 37 changer transitions 0/303 dead transitions. [2024-06-28 02:58:08,277 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 303 transitions, 3848 flow [2024-06-28 02:58:08,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:58:08,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:58:08,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 141 transitions. [2024-06-28 02:58:08,278 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3671875 [2024-06-28 02:58:08,278 INFO L175 Difference]: Start difference. First operand has 258 places, 275 transitions, 2958 flow. Second operand 12 states and 141 transitions. [2024-06-28 02:58:08,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 303 transitions, 3848 flow [2024-06-28 02:58:08,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 303 transitions, 3773 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-28 02:58:08,539 INFO L231 Difference]: Finished difference. Result has 262 places, 277 transitions, 3015 flow [2024-06-28 02:58:08,540 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2883, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3015, PETRI_PLACES=262, PETRI_TRANSITIONS=277} [2024-06-28 02:58:08,540 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 231 predicate places. [2024-06-28 02:58:08,540 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 277 transitions, 3015 flow [2024-06-28 02:58:08,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:08,540 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:58:08,540 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:58:08,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-28 02:58:08,541 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:58:08,541 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:58:08,541 INFO L85 PathProgramCache]: Analyzing trace with hash 1393844169, now seen corresponding path program 2 times [2024-06-28 02:58:08,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:58:08,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23407528] [2024-06-28 02:58:08,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:58:08,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:58:08,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:58:09,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:58:09,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:58:09,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23407528] [2024-06-28 02:58:09,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23407528] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:58:09,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:58:09,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:58:09,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721236629] [2024-06-28 02:58:09,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:58:09,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:58:09,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:58:09,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:58:09,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:58:09,658 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 02:58:09,658 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 277 transitions, 3015 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:09,658 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:58:09,658 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 02:58:09,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:58:10,159 INFO L124 PetriNetUnfolderBase]: 772/1335 cut-off events. [2024-06-28 02:58:10,159 INFO L125 PetriNetUnfolderBase]: For 96673/96673 co-relation queries the response was YES. [2024-06-28 02:58:10,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9040 conditions, 1335 events. 772/1335 cut-off events. For 96673/96673 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 6783 event pairs, 103 based on Foata normal form. 2/1336 useless extension candidates. Maximal degree in co-relation 8921. Up to 1234 conditions per place. [2024-06-28 02:58:10,172 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 264 selfloop transitions, 36 changer transitions 0/302 dead transitions. [2024-06-28 02:58:10,173 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 302 transitions, 3719 flow [2024-06-28 02:58:10,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:58:10,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:58:10,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 140 transitions. [2024-06-28 02:58:10,174 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3645833333333333 [2024-06-28 02:58:10,174 INFO L175 Difference]: Start difference. First operand has 262 places, 277 transitions, 3015 flow. Second operand 12 states and 140 transitions. [2024-06-28 02:58:10,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 302 transitions, 3719 flow [2024-06-28 02:58:10,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 302 transitions, 3596 flow, removed 24 selfloop flow, removed 10 redundant places. [2024-06-28 02:58:10,512 INFO L231 Difference]: Finished difference. Result has 264 places, 278 transitions, 2998 flow [2024-06-28 02:58:10,512 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2902, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2998, PETRI_PLACES=264, PETRI_TRANSITIONS=278} [2024-06-28 02:58:10,512 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 233 predicate places. [2024-06-28 02:58:10,512 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 278 transitions, 2998 flow [2024-06-28 02:58:10,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:10,513 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:58:10,513 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:58:10,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-28 02:58:10,513 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:58:10,514 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:58:10,514 INFO L85 PathProgramCache]: Analyzing trace with hash -1319818199, now seen corresponding path program 1 times [2024-06-28 02:58:10,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:58:10,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026594770] [2024-06-28 02:58:10,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:58:10,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:58:10,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:58:11,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:58:11,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:58:11,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026594770] [2024-06-28 02:58:11,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026594770] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:58:11,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:58:11,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:58:11,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383644775] [2024-06-28 02:58:11,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:58:11,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:58:11,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:58:11,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:58:11,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:58:11,593 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 02:58:11,593 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 278 transitions, 2998 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:11,593 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:58:11,593 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 02:58:11,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:58:12,133 INFO L124 PetriNetUnfolderBase]: 781/1350 cut-off events. [2024-06-28 02:58:12,134 INFO L125 PetriNetUnfolderBase]: For 102527/102527 co-relation queries the response was YES. [2024-06-28 02:58:12,144 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9038 conditions, 1350 events. 781/1350 cut-off events. For 102527/102527 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 6883 event pairs, 102 based on Foata normal form. 3/1352 useless extension candidates. Maximal degree in co-relation 8919. Up to 1231 conditions per place. [2024-06-28 02:58:12,148 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 266 selfloop transitions, 40 changer transitions 0/308 dead transitions. [2024-06-28 02:58:12,148 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 308 transitions, 3736 flow [2024-06-28 02:58:12,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 02:58:12,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 02:58:12,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 152 transitions. [2024-06-28 02:58:12,149 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36538461538461536 [2024-06-28 02:58:12,149 INFO L175 Difference]: Start difference. First operand has 264 places, 278 transitions, 2998 flow. Second operand 13 states and 152 transitions. [2024-06-28 02:58:12,150 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 308 transitions, 3736 flow [2024-06-28 02:58:12,454 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 308 transitions, 3652 flow, removed 7 selfloop flow, removed 10 redundant places. [2024-06-28 02:58:12,458 INFO L231 Difference]: Finished difference. Result has 267 places, 281 transitions, 3046 flow [2024-06-28 02:58:12,458 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2914, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3046, PETRI_PLACES=267, PETRI_TRANSITIONS=281} [2024-06-28 02:58:12,458 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 236 predicate places. [2024-06-28 02:58:12,458 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 281 transitions, 3046 flow [2024-06-28 02:58:12,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:12,459 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:58:12,459 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:58:12,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-28 02:58:12,459 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:58:12,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:58:12,460 INFO L85 PathProgramCache]: Analyzing trace with hash 1396640679, now seen corresponding path program 3 times [2024-06-28 02:58:12,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:58:12,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999615568] [2024-06-28 02:58:12,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:58:12,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:58:12,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:58:13,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:58:13,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:58:13,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999615568] [2024-06-28 02:58:13,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999615568] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:58:13,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:58:13,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:58:13,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796745026] [2024-06-28 02:58:13,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:58:13,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:58:13,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:58:13,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:58:13,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:58:13,614 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 02:58:13,614 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 281 transitions, 3046 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:13,614 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:58:13,614 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 02:58:13,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:58:14,059 INFO L124 PetriNetUnfolderBase]: 778/1345 cut-off events. [2024-06-28 02:58:14,059 INFO L125 PetriNetUnfolderBase]: For 94864/94864 co-relation queries the response was YES. [2024-06-28 02:58:14,068 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8944 conditions, 1345 events. 778/1345 cut-off events. For 94864/94864 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 6849 event pairs, 103 based on Foata normal form. 2/1346 useless extension candidates. Maximal degree in co-relation 8824. Up to 1256 conditions per place. [2024-06-28 02:58:14,072 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 267 selfloop transitions, 32 changer transitions 0/301 dead transitions. [2024-06-28 02:58:14,072 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 301 transitions, 3702 flow [2024-06-28 02:58:14,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:58:14,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:58:14,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-28 02:58:14,073 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36079545454545453 [2024-06-28 02:58:14,073 INFO L175 Difference]: Start difference. First operand has 267 places, 281 transitions, 3046 flow. Second operand 11 states and 127 transitions. [2024-06-28 02:58:14,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 301 transitions, 3702 flow [2024-06-28 02:58:14,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 301 transitions, 3582 flow, removed 23 selfloop flow, removed 11 redundant places. [2024-06-28 02:58:14,380 INFO L231 Difference]: Finished difference. Result has 267 places, 281 transitions, 2994 flow [2024-06-28 02:58:14,380 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2926, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2994, PETRI_PLACES=267, PETRI_TRANSITIONS=281} [2024-06-28 02:58:14,380 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 236 predicate places. [2024-06-28 02:58:14,380 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 281 transitions, 2994 flow [2024-06-28 02:58:14,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:14,381 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:58:14,381 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:58:14,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-28 02:58:14,381 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:58:14,381 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:58:14,381 INFO L85 PathProgramCache]: Analyzing trace with hash -1201552889, now seen corresponding path program 2 times [2024-06-28 02:58:14,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:58:14,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924211676] [2024-06-28 02:58:14,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:58:14,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:58:14,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:58:15,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:58:15,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:58:15,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924211676] [2024-06-28 02:58:15,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924211676] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:58:15,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:58:15,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:58:15,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429903906] [2024-06-28 02:58:15,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:58:15,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:58:15,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:58:15,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:58:15,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:58:15,180 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 02:58:15,180 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 281 transitions, 2994 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:15,180 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:58:15,180 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 02:58:15,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:58:15,554 INFO L124 PetriNetUnfolderBase]: 787/1360 cut-off events. [2024-06-28 02:58:15,555 INFO L125 PetriNetUnfolderBase]: For 100254/100254 co-relation queries the response was YES. [2024-06-28 02:58:15,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8974 conditions, 1360 events. 787/1360 cut-off events. For 100254/100254 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 6953 event pairs, 57 based on Foata normal form. 3/1362 useless extension candidates. Maximal degree in co-relation 8853. Up to 585 conditions per place. [2024-06-28 02:58:15,568 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 169 selfloop transitions, 142 changer transitions 0/313 dead transitions. [2024-06-28 02:58:15,569 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 313 transitions, 3777 flow [2024-06-28 02:58:15,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:58:15,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:58:15,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 147 transitions. [2024-06-28 02:58:15,569 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41761363636363635 [2024-06-28 02:58:15,569 INFO L175 Difference]: Start difference. First operand has 267 places, 281 transitions, 2994 flow. Second operand 11 states and 147 transitions. [2024-06-28 02:58:15,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 313 transitions, 3777 flow [2024-06-28 02:58:15,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 313 transitions, 3707 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-28 02:58:15,860 INFO L231 Difference]: Finished difference. Result has 268 places, 284 transitions, 3264 flow [2024-06-28 02:58:15,860 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2924, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=139, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3264, PETRI_PLACES=268, PETRI_TRANSITIONS=284} [2024-06-28 02:58:15,860 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 237 predicate places. [2024-06-28 02:58:15,861 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 284 transitions, 3264 flow [2024-06-28 02:58:15,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:15,861 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:58:15,861 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:58:15,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-28 02:58:15,861 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:58:15,861 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:58:15,862 INFO L85 PathProgramCache]: Analyzing trace with hash 1511936623, now seen corresponding path program 3 times [2024-06-28 02:58:15,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:58:15,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759894832] [2024-06-28 02:58:15,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:58:15,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:58:15,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:58:16,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:58:16,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:58:16,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759894832] [2024-06-28 02:58:16,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759894832] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:58:16,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:58:16,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:58:16,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271165117] [2024-06-28 02:58:16,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:58:16,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:58:16,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:58:16,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:58:16,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:58:16,678 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 02:58:16,678 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 284 transitions, 3264 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:16,678 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:58:16,679 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 02:58:16,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:58:17,006 INFO L124 PetriNetUnfolderBase]: 790/1365 cut-off events. [2024-06-28 02:58:17,006 INFO L125 PetriNetUnfolderBase]: For 96477/96477 co-relation queries the response was YES. [2024-06-28 02:58:17,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9415 conditions, 1365 events. 790/1365 cut-off events. For 96477/96477 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 6976 event pairs, 93 based on Foata normal form. 1/1365 useless extension candidates. Maximal degree in co-relation 9293. Up to 1028 conditions per place. [2024-06-28 02:58:17,020 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 232 selfloop transitions, 92 changer transitions 0/326 dead transitions. [2024-06-28 02:58:17,021 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 326 transitions, 4166 flow [2024-06-28 02:58:17,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:58:17,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:58:17,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-28 02:58:17,022 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38636363636363635 [2024-06-28 02:58:17,022 INFO L175 Difference]: Start difference. First operand has 268 places, 284 transitions, 3264 flow. Second operand 11 states and 136 transitions. [2024-06-28 02:58:17,022 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 326 transitions, 4166 flow [2024-06-28 02:58:17,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 326 transitions, 3817 flow, removed 19 selfloop flow, removed 9 redundant places. [2024-06-28 02:58:17,323 INFO L231 Difference]: Finished difference. Result has 274 places, 309 transitions, 3424 flow [2024-06-28 02:58:17,323 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2946, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3424, PETRI_PLACES=274, PETRI_TRANSITIONS=309} [2024-06-28 02:58:17,324 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 243 predicate places. [2024-06-28 02:58:17,324 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 309 transitions, 3424 flow [2024-06-28 02:58:17,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:17,324 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:58:17,325 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:58:17,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-28 02:58:17,325 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:58:17,325 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:58:17,325 INFO L85 PathProgramCache]: Analyzing trace with hash 1511931973, now seen corresponding path program 4 times [2024-06-28 02:58:17,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:58:17,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105109666] [2024-06-28 02:58:17,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:58:17,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:58:17,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:58:18,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:58:18,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:58:18,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105109666] [2024-06-28 02:58:18,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105109666] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:58:18,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:58:18,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:58:18,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626202030] [2024-06-28 02:58:18,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:58:18,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:58:18,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:58:18,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:58:18,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:58:18,381 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 02:58:18,382 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 309 transitions, 3424 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:18,383 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:58:18,383 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 02:58:18,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:58:18,726 INFO L124 PetriNetUnfolderBase]: 793/1370 cut-off events. [2024-06-28 02:58:18,726 INFO L125 PetriNetUnfolderBase]: For 98684/98684 co-relation queries the response was YES. [2024-06-28 02:58:18,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9517 conditions, 1370 events. 793/1370 cut-off events. For 98684/98684 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 7008 event pairs, 93 based on Foata normal form. 1/1370 useless extension candidates. Maximal degree in co-relation 9390. Up to 1024 conditions per place. [2024-06-28 02:58:18,740 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 230 selfloop transitions, 97 changer transitions 0/329 dead transitions. [2024-06-28 02:58:18,741 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 329 transitions, 4162 flow [2024-06-28 02:58:18,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:58:18,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:58:18,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-28 02:58:18,742 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38920454545454547 [2024-06-28 02:58:18,742 INFO L175 Difference]: Start difference. First operand has 274 places, 309 transitions, 3424 flow. Second operand 11 states and 137 transitions. [2024-06-28 02:58:18,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 329 transitions, 4162 flow [2024-06-28 02:58:19,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 329 transitions, 4061 flow, removed 21 selfloop flow, removed 4 redundant places. [2024-06-28 02:58:19,095 INFO L231 Difference]: Finished difference. Result has 282 places, 312 transitions, 3571 flow [2024-06-28 02:58:19,095 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3323, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3571, PETRI_PLACES=282, PETRI_TRANSITIONS=312} [2024-06-28 02:58:19,095 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 251 predicate places. [2024-06-28 02:58:19,095 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 312 transitions, 3571 flow [2024-06-28 02:58:19,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:19,096 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:58:19,096 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:58:19,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-28 02:58:19,096 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:58:19,096 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:58:19,096 INFO L85 PathProgramCache]: Analyzing trace with hash 1511931849, now seen corresponding path program 4 times [2024-06-28 02:58:19,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:58:19,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438424183] [2024-06-28 02:58:19,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:58:19,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:58:19,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:58:20,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:58:20,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:58:20,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438424183] [2024-06-28 02:58:20,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438424183] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:58:20,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:58:20,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:58:20,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065596476] [2024-06-28 02:58:20,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:58:20,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:58:20,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:58:20,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:58:20,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:58:20,121 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 02:58:20,121 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 312 transitions, 3571 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:20,122 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:58:20,122 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 02:58:20,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:58:20,523 INFO L124 PetriNetUnfolderBase]: 797/1378 cut-off events. [2024-06-28 02:58:20,523 INFO L125 PetriNetUnfolderBase]: For 105024/105024 co-relation queries the response was YES. [2024-06-28 02:58:20,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9798 conditions, 1378 events. 797/1378 cut-off events. For 105024/105024 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 7092 event pairs, 84 based on Foata normal form. 2/1379 useless extension candidates. Maximal degree in co-relation 9668. Up to 1205 conditions per place. [2024-06-28 02:58:20,539 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 269 selfloop transitions, 60 changer transitions 0/331 dead transitions. [2024-06-28 02:58:20,539 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 331 transitions, 4307 flow [2024-06-28 02:58:20,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:58:20,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:58:20,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-28 02:58:20,540 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3693181818181818 [2024-06-28 02:58:20,540 INFO L175 Difference]: Start difference. First operand has 282 places, 312 transitions, 3571 flow. Second operand 11 states and 130 transitions. [2024-06-28 02:58:20,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 331 transitions, 4307 flow [2024-06-28 02:58:20,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 331 transitions, 4099 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-28 02:58:20,956 INFO L231 Difference]: Finished difference. Result has 285 places, 313 transitions, 3515 flow [2024-06-28 02:58:20,956 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3363, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3515, PETRI_PLACES=285, PETRI_TRANSITIONS=313} [2024-06-28 02:58:20,956 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 254 predicate places. [2024-06-28 02:58:20,956 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 313 transitions, 3515 flow [2024-06-28 02:58:20,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:20,957 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:58:20,957 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:58:20,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-28 02:58:20,957 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:58:20,957 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:58:20,957 INFO L85 PathProgramCache]: Analyzing trace with hash 1677748737, now seen corresponding path program 5 times [2024-06-28 02:58:20,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:58:20,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018074534] [2024-06-28 02:58:20,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:58:20,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:58:20,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:58:21,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:58:21,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:58:21,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018074534] [2024-06-28 02:58:21,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018074534] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:58:21,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:58:21,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:58:21,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405273650] [2024-06-28 02:58:21,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:58:21,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:58:21,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:58:21,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:58:21,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:58:21,960 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 02:58:21,960 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 313 transitions, 3515 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:21,960 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:58:21,960 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 02:58:21,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:58:22,394 INFO L124 PetriNetUnfolderBase]: 800/1383 cut-off events. [2024-06-28 02:58:22,394 INFO L125 PetriNetUnfolderBase]: For 103361/103361 co-relation queries the response was YES. [2024-06-28 02:58:22,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9731 conditions, 1383 events. 800/1383 cut-off events. For 103361/103361 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 7106 event pairs, 89 based on Foata normal form. 1/1383 useless extension candidates. Maximal degree in co-relation 9600. Up to 1046 conditions per place. [2024-06-28 02:58:22,406 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 252 selfloop transitions, 86 changer transitions 0/340 dead transitions. [2024-06-28 02:58:22,406 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 340 transitions, 4368 flow [2024-06-28 02:58:22,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:58:22,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:58:22,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-28 02:58:22,407 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835227272727273 [2024-06-28 02:58:22,408 INFO L175 Difference]: Start difference. First operand has 285 places, 313 transitions, 3515 flow. Second operand 11 states and 135 transitions. [2024-06-28 02:58:22,408 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 340 transitions, 4368 flow [2024-06-28 02:58:22,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 340 transitions, 4226 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-28 02:58:22,841 INFO L231 Difference]: Finished difference. Result has 287 places, 325 transitions, 3687 flow [2024-06-28 02:58:22,841 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3373, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3687, PETRI_PLACES=287, PETRI_TRANSITIONS=325} [2024-06-28 02:58:22,841 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 256 predicate places. [2024-06-28 02:58:22,842 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 325 transitions, 3687 flow [2024-06-28 02:58:22,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:22,842 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:58:22,842 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:58:22,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-28 02:58:22,842 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:58:22,843 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:58:22,843 INFO L85 PathProgramCache]: Analyzing trace with hash 935227253, now seen corresponding path program 6 times [2024-06-28 02:58:22,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:58:22,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793260300] [2024-06-28 02:58:22,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:58:22,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:58:22,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:58:23,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:58:23,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:58:23,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793260300] [2024-06-28 02:58:23,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793260300] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:58:23,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:58:23,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:58:23,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866129339] [2024-06-28 02:58:23,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:58:23,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:58:23,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:58:23,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:58:23,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:58:23,640 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 02:58:23,641 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 325 transitions, 3687 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:23,641 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:58:23,641 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 02:58:23,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:58:24,084 INFO L124 PetriNetUnfolderBase]: 809/1398 cut-off events. [2024-06-28 02:58:24,085 INFO L125 PetriNetUnfolderBase]: For 113453/113453 co-relation queries the response was YES. [2024-06-28 02:58:24,093 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9959 conditions, 1398 events. 809/1398 cut-off events. For 113453/113453 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 7220 event pairs, 69 based on Foata normal form. 3/1400 useless extension candidates. Maximal degree in co-relation 9827. Up to 623 conditions per place. [2024-06-28 02:58:24,096 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 210 selfloop transitions, 137 changer transitions 0/349 dead transitions. [2024-06-28 02:58:24,096 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 349 transitions, 4511 flow [2024-06-28 02:58:24,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:58:24,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:58:24,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 145 transitions. [2024-06-28 02:58:24,097 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4119318181818182 [2024-06-28 02:58:24,097 INFO L175 Difference]: Start difference. First operand has 287 places, 325 transitions, 3687 flow. Second operand 11 states and 145 transitions. [2024-06-28 02:58:24,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 349 transitions, 4511 flow [2024-06-28 02:58:24,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 349 transitions, 4401 flow, removed 16 selfloop flow, removed 4 redundant places. [2024-06-28 02:58:24,532 INFO L231 Difference]: Finished difference. Result has 294 places, 328 transitions, 3926 flow [2024-06-28 02:58:24,532 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3577, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=325, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=134, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3926, PETRI_PLACES=294, PETRI_TRANSITIONS=328} [2024-06-28 02:58:24,532 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 263 predicate places. [2024-06-28 02:58:24,532 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 328 transitions, 3926 flow [2024-06-28 02:58:24,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:24,533 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:58:24,533 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:58:24,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-28 02:58:24,533 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:58:24,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:58:24,533 INFO L85 PathProgramCache]: Analyzing trace with hash -1029411381, now seen corresponding path program 1 times [2024-06-28 02:58:24,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:58:24,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641041313] [2024-06-28 02:58:24,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:58:24,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:58:24,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:58:25,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:58:25,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:58:25,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641041313] [2024-06-28 02:58:25,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641041313] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:58:25,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:58:25,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:58:25,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18905760] [2024-06-28 02:58:25,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:58:25,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:58:25,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:58:25,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:58:25,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:58:25,621 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 02:58:25,621 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 328 transitions, 3926 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:25,621 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:58:25,621 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 02:58:25,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:58:25,994 INFO L124 PetriNetUnfolderBase]: 813/1406 cut-off events. [2024-06-28 02:58:25,994 INFO L125 PetriNetUnfolderBase]: For 112615/112615 co-relation queries the response was YES. [2024-06-28 02:58:26,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10219 conditions, 1406 events. 813/1406 cut-off events. For 112615/112615 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 7259 event pairs, 55 based on Foata normal form. 2/1407 useless extension candidates. Maximal degree in co-relation 10086. Up to 1166 conditions per place. [2024-06-28 02:58:26,011 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 267 selfloop transitions, 77 changer transitions 0/346 dead transitions. [2024-06-28 02:58:26,011 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 346 transitions, 4670 flow [2024-06-28 02:58:26,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:58:26,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:58:26,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-28 02:58:26,012 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3875 [2024-06-28 02:58:26,013 INFO L175 Difference]: Start difference. First operand has 294 places, 328 transitions, 3926 flow. Second operand 10 states and 124 transitions. [2024-06-28 02:58:26,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 346 transitions, 4670 flow [2024-06-28 02:58:26,424 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 346 transitions, 4345 flow, removed 28 selfloop flow, removed 9 redundant places. [2024-06-28 02:58:26,428 INFO L231 Difference]: Finished difference. Result has 295 places, 329 transitions, 3773 flow [2024-06-28 02:58:26,429 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3601, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=328, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3773, PETRI_PLACES=295, PETRI_TRANSITIONS=329} [2024-06-28 02:58:26,429 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 264 predicate places. [2024-06-28 02:58:26,429 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 329 transitions, 3773 flow [2024-06-28 02:58:26,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:26,429 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:58:26,430 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:58:26,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-28 02:58:26,430 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:58:26,430 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:58:26,430 INFO L85 PathProgramCache]: Analyzing trace with hash 1677570983, now seen corresponding path program 5 times [2024-06-28 02:58:26,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:58:26,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749195300] [2024-06-28 02:58:26,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:58:26,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:58:26,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:58:27,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:58:27,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:58:27,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749195300] [2024-06-28 02:58:27,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749195300] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:58:27,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:58:27,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:58:27,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444994649] [2024-06-28 02:58:27,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:58:27,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:58:27,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:58:27,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:58:27,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:58:27,257 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 02:58:27,258 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 329 transitions, 3773 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:27,258 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:58:27,258 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 02:58:27,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:58:27,624 INFO L124 PetriNetUnfolderBase]: 817/1414 cut-off events. [2024-06-28 02:58:27,624 INFO L125 PetriNetUnfolderBase]: For 114853/114853 co-relation queries the response was YES. [2024-06-28 02:58:27,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10086 conditions, 1414 events. 817/1414 cut-off events. For 114853/114853 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 7330 event pairs, 83 based on Foata normal form. 2/1415 useless extension candidates. Maximal degree in co-relation 9952. Up to 1241 conditions per place. [2024-06-28 02:58:27,636 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 290 selfloop transitions, 54 changer transitions 0/346 dead transitions. [2024-06-28 02:58:27,636 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 346 transitions, 4535 flow [2024-06-28 02:58:27,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:58:27,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:58:27,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 128 transitions. [2024-06-28 02:58:27,637 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-28 02:58:27,638 INFO L175 Difference]: Start difference. First operand has 295 places, 329 transitions, 3773 flow. Second operand 11 states and 128 transitions. [2024-06-28 02:58:27,638 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 346 transitions, 4535 flow [2024-06-28 02:58:28,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 346 transitions, 4349 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-28 02:58:28,099 INFO L231 Difference]: Finished difference. Result has 298 places, 330 transitions, 3729 flow [2024-06-28 02:58:28,099 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3587, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=329, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3729, PETRI_PLACES=298, PETRI_TRANSITIONS=330} [2024-06-28 02:58:28,099 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 267 predicate places. [2024-06-28 02:58:28,099 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 330 transitions, 3729 flow [2024-06-28 02:58:28,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:28,100 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:58:28,100 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:58:28,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-28 02:58:28,100 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:58:28,100 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:58:28,100 INFO L85 PathProgramCache]: Analyzing trace with hash -1036091385, now seen corresponding path program 7 times [2024-06-28 02:58:28,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:58:28,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603535977] [2024-06-28 02:58:28,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:58:28,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:58:28,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:58:28,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:58:28,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:58:28,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603535977] [2024-06-28 02:58:28,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603535977] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:58:28,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:58:28,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:58:28,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824391816] [2024-06-28 02:58:28,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:58:28,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:58:28,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:58:28,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:58:28,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:58:28,972 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 02:58:28,972 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 330 transitions, 3729 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:28,972 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:58:28,972 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 02:58:28,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:58:29,393 INFO L124 PetriNetUnfolderBase]: 825/1427 cut-off events. [2024-06-28 02:58:29,393 INFO L125 PetriNetUnfolderBase]: For 117089/117089 co-relation queries the response was YES. [2024-06-28 02:58:29,405 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10228 conditions, 1427 events. 825/1427 cut-off events. For 117089/117089 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 7424 event pairs, 91 based on Foata normal form. 1/1427 useless extension candidates. Maximal degree in co-relation 10093. Up to 1077 conditions per place. [2024-06-28 02:58:29,409 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 251 selfloop transitions, 98 changer transitions 0/351 dead transitions. [2024-06-28 02:58:29,410 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 351 transitions, 4741 flow [2024-06-28 02:58:29,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:58:29,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:58:29,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-28 02:58:29,411 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38636363636363635 [2024-06-28 02:58:29,411 INFO L175 Difference]: Start difference. First operand has 298 places, 330 transitions, 3729 flow. Second operand 11 states and 136 transitions. [2024-06-28 02:58:29,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 351 transitions, 4741 flow [2024-06-28 02:58:29,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 351 transitions, 4609 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-28 02:58:29,905 INFO L231 Difference]: Finished difference. Result has 301 places, 335 transitions, 3904 flow [2024-06-28 02:58:29,905 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3597, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=330, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3904, PETRI_PLACES=301, PETRI_TRANSITIONS=335} [2024-06-28 02:58:29,905 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 270 predicate places. [2024-06-28 02:58:29,906 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 335 transitions, 3904 flow [2024-06-28 02:58:29,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:29,906 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:58:29,906 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:58:29,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-28 02:58:29,906 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:58:29,906 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:58:29,907 INFO L85 PathProgramCache]: Analyzing trace with hash 1677575757, now seen corresponding path program 8 times [2024-06-28 02:58:29,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:58:29,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344986923] [2024-06-28 02:58:29,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:58:29,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:58:29,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:58:30,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:58:30,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:58:30,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344986923] [2024-06-28 02:58:30,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344986923] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:58:30,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:58:30,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:58:30,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641030265] [2024-06-28 02:58:30,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:58:30,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:58:30,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:58:30,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:58:30,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:58:30,820 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 02:58:30,820 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 335 transitions, 3904 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:30,820 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:58:30,820 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 02:58:30,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:58:31,187 INFO L124 PetriNetUnfolderBase]: 823/1424 cut-off events. [2024-06-28 02:58:31,188 INFO L125 PetriNetUnfolderBase]: For 115683/115683 co-relation queries the response was YES. [2024-06-28 02:58:31,198 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10259 conditions, 1424 events. 823/1424 cut-off events. For 115683/115683 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 7402 event pairs, 89 based on Foata normal form. 1/1424 useless extension candidates. Maximal degree in co-relation 10122. Up to 1087 conditions per place. [2024-06-28 02:58:31,203 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 257 selfloop transitions, 91 changer transitions 0/350 dead transitions. [2024-06-28 02:58:31,203 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 350 transitions, 4644 flow [2024-06-28 02:58:31,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:58:31,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:58:31,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-28 02:58:31,204 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3806818181818182 [2024-06-28 02:58:31,204 INFO L175 Difference]: Start difference. First operand has 301 places, 335 transitions, 3904 flow. Second operand 11 states and 134 transitions. [2024-06-28 02:58:31,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 350 transitions, 4644 flow [2024-06-28 02:58:31,702 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 350 transitions, 4486 flow, removed 35 selfloop flow, removed 5 redundant places. [2024-06-28 02:58:31,707 INFO L231 Difference]: Finished difference. Result has 307 places, 335 transitions, 3933 flow [2024-06-28 02:58:31,707 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3746, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=335, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3933, PETRI_PLACES=307, PETRI_TRANSITIONS=335} [2024-06-28 02:58:31,707 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 276 predicate places. [2024-06-28 02:58:31,707 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 335 transitions, 3933 flow [2024-06-28 02:58:31,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:31,707 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:58:31,708 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:58:31,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-28 02:58:31,708 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:58:31,708 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:58:31,708 INFO L85 PathProgramCache]: Analyzing trace with hash 172999467, now seen corresponding path program 2 times [2024-06-28 02:58:31,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:58:31,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518040467] [2024-06-28 02:58:31,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:58:31,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:58:31,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:58:32,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:58:32,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:58:32,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518040467] [2024-06-28 02:58:32,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518040467] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:58:32,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:58:32,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:58:32,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294153274] [2024-06-28 02:58:32,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:58:32,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:58:32,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:58:32,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:58:32,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:58:32,731 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 02:58:32,731 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 335 transitions, 3933 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:32,731 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:58:32,731 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 02:58:32,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:58:33,226 INFO L124 PetriNetUnfolderBase]: 839/1452 cut-off events. [2024-06-28 02:58:33,226 INFO L125 PetriNetUnfolderBase]: For 122299/122299 co-relation queries the response was YES. [2024-06-28 02:58:33,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10558 conditions, 1452 events. 839/1452 cut-off events. For 122299/122299 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 7599 event pairs, 65 based on Foata normal form. 2/1453 useless extension candidates. Maximal degree in co-relation 10419. Up to 1223 conditions per place. [2024-06-28 02:58:33,243 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 280 selfloop transitions, 74 changer transitions 0/356 dead transitions. [2024-06-28 02:58:33,243 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 356 transitions, 4758 flow [2024-06-28 02:58:33,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:58:33,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:58:33,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 121 transitions. [2024-06-28 02:58:33,244 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.378125 [2024-06-28 02:58:33,244 INFO L175 Difference]: Start difference. First operand has 307 places, 335 transitions, 3933 flow. Second operand 10 states and 121 transitions. [2024-06-28 02:58:33,244 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 356 transitions, 4758 flow [2024-06-28 02:58:33,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 356 transitions, 4569 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-28 02:58:33,735 INFO L231 Difference]: Finished difference. Result has 310 places, 341 transitions, 3997 flow [2024-06-28 02:58:33,736 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3746, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=335, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3997, PETRI_PLACES=310, PETRI_TRANSITIONS=341} [2024-06-28 02:58:33,736 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 279 predicate places. [2024-06-28 02:58:33,736 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 341 transitions, 3997 flow [2024-06-28 02:58:33,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:33,736 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:58:33,736 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:58:33,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-28 02:58:33,737 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:58:33,737 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:58:33,737 INFO L85 PathProgramCache]: Analyzing trace with hash 1746260701, now seen corresponding path program 3 times [2024-06-28 02:58:33,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:58:33,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942764912] [2024-06-28 02:58:33,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:58:33,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:58:33,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:58:34,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:58:34,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:58:34,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942764912] [2024-06-28 02:58:34,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942764912] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:58:34,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:58:34,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:58:34,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703932000] [2024-06-28 02:58:34,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:58:34,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:58:34,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:58:34,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:58:34,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:58:34,943 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 02:58:34,943 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 341 transitions, 3997 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:34,944 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:58:34,944 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 02:58:34,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:58:35,326 INFO L124 PetriNetUnfolderBase]: 843/1460 cut-off events. [2024-06-28 02:58:35,327 INFO L125 PetriNetUnfolderBase]: For 124846/124846 co-relation queries the response was YES. [2024-06-28 02:58:35,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10628 conditions, 1460 events. 843/1460 cut-off events. For 124846/124846 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 7646 event pairs, 61 based on Foata normal form. 2/1461 useless extension candidates. Maximal degree in co-relation 10487. Up to 1214 conditions per place. [2024-06-28 02:58:35,343 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 283 selfloop transitions, 75 changer transitions 0/360 dead transitions. [2024-06-28 02:58:35,344 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 360 transitions, 4801 flow [2024-06-28 02:58:35,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:58:35,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:58:35,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-28 02:58:35,345 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3875 [2024-06-28 02:58:35,345 INFO L175 Difference]: Start difference. First operand has 310 places, 341 transitions, 3997 flow. Second operand 10 states and 124 transitions. [2024-06-28 02:58:35,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 360 transitions, 4801 flow [2024-06-28 02:58:35,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 360 transitions, 4684 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-06-28 02:58:35,876 INFO L231 Difference]: Finished difference. Result has 316 places, 344 transitions, 4097 flow [2024-06-28 02:58:35,876 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3880, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=341, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4097, PETRI_PLACES=316, PETRI_TRANSITIONS=344} [2024-06-28 02:58:35,876 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 285 predicate places. [2024-06-28 02:58:35,876 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 344 transitions, 4097 flow [2024-06-28 02:58:35,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:35,877 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:58:35,877 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:58:35,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-28 02:58:35,877 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:58:35,877 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:58:35,878 INFO L85 PathProgramCache]: Analyzing trace with hash 1746014437, now seen corresponding path program 9 times [2024-06-28 02:58:35,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:58:35,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869197361] [2024-06-28 02:58:35,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:58:35,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:58:35,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:58:36,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:58:36,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:58:36,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869197361] [2024-06-28 02:58:36,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869197361] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:58:36,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:58:36,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:58:36,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620027665] [2024-06-28 02:58:36,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:58:36,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:58:36,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:58:36,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:58:36,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:58:36,922 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 02:58:36,922 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 344 transitions, 4097 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:36,922 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:58:36,922 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 02:58:36,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:58:37,376 INFO L124 PetriNetUnfolderBase]: 852/1475 cut-off events. [2024-06-28 02:58:37,376 INFO L125 PetriNetUnfolderBase]: For 132787/132787 co-relation queries the response was YES. [2024-06-28 02:58:37,389 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10840 conditions, 1475 events. 852/1475 cut-off events. For 132787/132787 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 7737 event pairs, 73 based on Foata normal form. 3/1477 useless extension candidates. Maximal degree in co-relation 10697. Up to 684 conditions per place. [2024-06-28 02:58:37,393 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 233 selfloop transitions, 136 changer transitions 0/371 dead transitions. [2024-06-28 02:58:37,394 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 371 transitions, 5029 flow [2024-06-28 02:58:37,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:58:37,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:58:37,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 143 transitions. [2024-06-28 02:58:37,395 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-28 02:58:37,395 INFO L175 Difference]: Start difference. First operand has 316 places, 344 transitions, 4097 flow. Second operand 11 states and 143 transitions. [2024-06-28 02:58:37,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 371 transitions, 5029 flow [2024-06-28 02:58:37,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 371 transitions, 4874 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-28 02:58:37,946 INFO L231 Difference]: Finished difference. Result has 320 places, 347 transitions, 4299 flow [2024-06-28 02:58:37,947 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3942, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=344, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=133, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4299, PETRI_PLACES=320, PETRI_TRANSITIONS=347} [2024-06-28 02:58:37,947 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 289 predicate places. [2024-06-28 02:58:37,947 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 347 transitions, 4299 flow [2024-06-28 02:58:37,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:37,947 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:58:37,948 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:58:37,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-28 02:58:37,948 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:58:37,948 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:58:37,948 INFO L85 PathProgramCache]: Analyzing trace with hash -63191517, now seen corresponding path program 10 times [2024-06-28 02:58:37,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:58:37,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695780061] [2024-06-28 02:58:37,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:58:37,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:58:37,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:58:38,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:58:38,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:58:38,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695780061] [2024-06-28 02:58:38,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695780061] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:58:38,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:58:38,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:58:38,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262388410] [2024-06-28 02:58:38,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:58:38,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:58:38,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:58:38,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:58:38,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:58:38,808 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 02:58:38,809 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 347 transitions, 4299 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:38,809 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:58:38,809 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 02:58:38,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:58:39,232 INFO L124 PetriNetUnfolderBase]: 855/1480 cut-off events. [2024-06-28 02:58:39,232 INFO L125 PetriNetUnfolderBase]: For 126894/126894 co-relation queries the response was YES. [2024-06-28 02:58:39,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11100 conditions, 1480 events. 855/1480 cut-off events. For 126894/126894 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 7800 event pairs, 83 based on Foata normal form. 1/1480 useless extension candidates. Maximal degree in co-relation 10956. Up to 1143 conditions per place. [2024-06-28 02:58:39,245 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 275 selfloop transitions, 91 changer transitions 0/368 dead transitions. [2024-06-28 02:58:39,245 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 368 transitions, 5188 flow [2024-06-28 02:58:39,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:58:39,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:58:39,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-28 02:58:39,246 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3778409090909091 [2024-06-28 02:58:39,247 INFO L175 Difference]: Start difference. First operand has 320 places, 347 transitions, 4299 flow. Second operand 11 states and 133 transitions. [2024-06-28 02:58:39,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 368 transitions, 5188 flow [2024-06-28 02:58:39,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 368 transitions, 4855 flow, removed 33 selfloop flow, removed 9 redundant places. [2024-06-28 02:58:39,786 INFO L231 Difference]: Finished difference. Result has 322 places, 355 transitions, 4276 flow [2024-06-28 02:58:39,787 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3966, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=347, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4276, PETRI_PLACES=322, PETRI_TRANSITIONS=355} [2024-06-28 02:58:39,787 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 291 predicate places. [2024-06-28 02:58:39,787 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 355 transitions, 4276 flow [2024-06-28 02:58:39,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:39,787 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:58:39,787 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:58:39,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-28 02:58:39,788 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:58:39,788 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:58:39,788 INFO L85 PathProgramCache]: Analyzing trace with hash -56935407, now seen corresponding path program 11 times [2024-06-28 02:58:39,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:58:39,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138625097] [2024-06-28 02:58:39,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:58:39,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:58:39,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:58:40,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:58:40,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:58:40,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138625097] [2024-06-28 02:58:40,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138625097] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:58:40,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:58:40,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:58:40,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10256231] [2024-06-28 02:58:40,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:58:40,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:58:40,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:58:40,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:58:40,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:58:40,735 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 02:58:40,735 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 355 transitions, 4276 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:40,735 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:58:40,735 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 02:58:40,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:58:41,160 INFO L124 PetriNetUnfolderBase]: 858/1485 cut-off events. [2024-06-28 02:58:41,161 INFO L125 PetriNetUnfolderBase]: For 128590/128590 co-relation queries the response was YES. [2024-06-28 02:58:41,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10979 conditions, 1485 events. 858/1485 cut-off events. For 128590/128590 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 7814 event pairs, 91 based on Foata normal form. 1/1485 useless extension candidates. Maximal degree in co-relation 10834. Up to 1148 conditions per place. [2024-06-28 02:58:41,178 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 279 selfloop transitions, 92 changer transitions 0/373 dead transitions. [2024-06-28 02:58:41,178 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 373 transitions, 5153 flow [2024-06-28 02:58:41,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:58:41,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:58:41,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-28 02:58:41,179 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3806818181818182 [2024-06-28 02:58:41,179 INFO L175 Difference]: Start difference. First operand has 322 places, 355 transitions, 4276 flow. Second operand 11 states and 134 transitions. [2024-06-28 02:58:41,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 373 transitions, 5153 flow [2024-06-28 02:58:41,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 373 transitions, 4967 flow, removed 25 selfloop flow, removed 5 redundant places. [2024-06-28 02:58:41,728 INFO L231 Difference]: Finished difference. Result has 328 places, 360 transitions, 4380 flow [2024-06-28 02:58:41,729 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4093, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=355, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4380, PETRI_PLACES=328, PETRI_TRANSITIONS=360} [2024-06-28 02:58:41,729 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 297 predicate places. [2024-06-28 02:58:41,729 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 360 transitions, 4380 flow [2024-06-28 02:58:41,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:41,729 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:58:41,729 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:58:41,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-28 02:58:41,730 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:58:41,730 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:58:41,730 INFO L85 PathProgramCache]: Analyzing trace with hash 173297997, now seen corresponding path program 4 times [2024-06-28 02:58:41,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:58:41,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550083355] [2024-06-28 02:58:41,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:58:41,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:58:41,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:58:42,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:58:42,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:58:42,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550083355] [2024-06-28 02:58:42,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550083355] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:58:42,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:58:42,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:58:42,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948357212] [2024-06-28 02:58:42,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:58:42,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:58:42,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:58:42,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:58:42,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:58:42,775 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 02:58:42,775 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 360 transitions, 4380 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:42,775 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:58:42,775 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 02:58:42,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:58:43,161 INFO L124 PetriNetUnfolderBase]: 869/1506 cut-off events. [2024-06-28 02:58:43,161 INFO L125 PetriNetUnfolderBase]: For 145618/145618 co-relation queries the response was YES. [2024-06-28 02:58:43,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11290 conditions, 1506 events. 869/1506 cut-off events. For 145618/145618 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 7968 event pairs, 64 based on Foata normal form. 2/1507 useless extension candidates. Maximal degree in co-relation 11145. Up to 1232 conditions per place. [2024-06-28 02:58:43,180 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 297 selfloop transitions, 79 changer transitions 0/378 dead transitions. [2024-06-28 02:58:43,180 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 378 transitions, 5398 flow [2024-06-28 02:58:43,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:58:43,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:58:43,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 122 transitions. [2024-06-28 02:58:43,196 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38125 [2024-06-28 02:58:43,196 INFO L175 Difference]: Start difference. First operand has 328 places, 360 transitions, 4380 flow. Second operand 10 states and 122 transitions. [2024-06-28 02:58:43,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 378 transitions, 5398 flow [2024-06-28 02:58:43,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 331 places, 378 transitions, 5190 flow, removed 28 selfloop flow, removed 6 redundant places. [2024-06-28 02:58:43,841 INFO L231 Difference]: Finished difference. Result has 332 places, 362 transitions, 4368 flow [2024-06-28 02:58:43,841 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4172, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=360, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4368, PETRI_PLACES=332, PETRI_TRANSITIONS=362} [2024-06-28 02:58:43,841 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 301 predicate places. [2024-06-28 02:58:43,841 INFO L495 AbstractCegarLoop]: Abstraction has has 332 places, 362 transitions, 4368 flow [2024-06-28 02:58:43,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:43,842 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:58:43,842 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:58:43,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-28 02:58:43,842 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:58:43,842 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:58:43,842 INFO L85 PathProgramCache]: Analyzing trace with hash 1524615661, now seen corresponding path program 5 times [2024-06-28 02:58:43,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:58:43,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985700800] [2024-06-28 02:58:43,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:58:43,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:58:43,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:58:45,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:58:45,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:58:45,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985700800] [2024-06-28 02:58:45,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985700800] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:58:45,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:58:45,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:58:45,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665665708] [2024-06-28 02:58:45,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:58:45,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:58:45,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:58:45,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:58:45,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:58:45,108 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 02:58:45,108 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 362 transitions, 4368 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:45,108 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:58:45,108 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 02:58:45,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:58:45,467 INFO L124 PetriNetUnfolderBase]: 866/1501 cut-off events. [2024-06-28 02:58:45,468 INFO L125 PetriNetUnfolderBase]: For 138604/138604 co-relation queries the response was YES. [2024-06-28 02:58:45,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11056 conditions, 1501 events. 866/1501 cut-off events. For 138604/138604 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 7914 event pairs, 55 based on Foata normal form. 2/1502 useless extension candidates. Maximal degree in co-relation 10911. Up to 1255 conditions per place. [2024-06-28 02:58:45,486 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 302 selfloop transitions, 74 changer transitions 0/378 dead transitions. [2024-06-28 02:58:45,487 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 378 transitions, 5164 flow [2024-06-28 02:58:45,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:58:45,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:58:45,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2024-06-28 02:58:45,490 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-28 02:58:45,490 INFO L175 Difference]: Start difference. First operand has 332 places, 362 transitions, 4368 flow. Second operand 10 states and 125 transitions. [2024-06-28 02:58:45,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 378 transitions, 5164 flow [2024-06-28 02:58:46,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 378 transitions, 5046 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-06-28 02:58:46,059 INFO L231 Difference]: Finished difference. Result has 336 places, 362 transitions, 4403 flow [2024-06-28 02:58:46,059 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4250, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=362, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=288, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4403, PETRI_PLACES=336, PETRI_TRANSITIONS=362} [2024-06-28 02:58:46,060 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 305 predicate places. [2024-06-28 02:58:46,060 INFO L495 AbstractCegarLoop]: Abstraction has has 336 places, 362 transitions, 4403 flow [2024-06-28 02:58:46,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:46,060 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:58:46,060 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:58:46,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-28 02:58:46,060 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:58:46,060 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:58:46,061 INFO L85 PathProgramCache]: Analyzing trace with hash -63369147, now seen corresponding path program 12 times [2024-06-28 02:58:46,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:58:46,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050370963] [2024-06-28 02:58:46,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:58:46,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:58:46,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:58:46,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:58:46,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:58:46,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050370963] [2024-06-28 02:58:46,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050370963] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:58:46,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:58:46,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:58:46,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772256980] [2024-06-28 02:58:46,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:58:46,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:58:46,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:58:46,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:58:46,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:58:46,974 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 02:58:46,975 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 362 transitions, 4403 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:46,975 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:58:46,975 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 02:58:46,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:58:47,403 INFO L124 PetriNetUnfolderBase]: 874/1514 cut-off events. [2024-06-28 02:58:47,404 INFO L125 PetriNetUnfolderBase]: For 141862/141862 co-relation queries the response was YES. [2024-06-28 02:58:47,417 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11435 conditions, 1514 events. 874/1514 cut-off events. For 141862/141862 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 8028 event pairs, 95 based on Foata normal form. 1/1514 useless extension candidates. Maximal degree in co-relation 11288. Up to 1161 conditions per place. [2024-06-28 02:58:47,421 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 272 selfloop transitions, 107 changer transitions 0/381 dead transitions. [2024-06-28 02:58:47,421 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 381 transitions, 5519 flow [2024-06-28 02:58:47,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:58:47,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:58:47,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-28 02:58:47,422 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3806818181818182 [2024-06-28 02:58:47,422 INFO L175 Difference]: Start difference. First operand has 336 places, 362 transitions, 4403 flow. Second operand 11 states and 134 transitions. [2024-06-28 02:58:47,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 381 transitions, 5519 flow [2024-06-28 02:58:48,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 381 transitions, 5314 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-28 02:58:48,048 INFO L231 Difference]: Finished difference. Result has 338 places, 367 transitions, 4558 flow [2024-06-28 02:58:48,048 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4198, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=362, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4558, PETRI_PLACES=338, PETRI_TRANSITIONS=367} [2024-06-28 02:58:48,049 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 307 predicate places. [2024-06-28 02:58:48,049 INFO L495 AbstractCegarLoop]: Abstraction has has 338 places, 367 transitions, 4558 flow [2024-06-28 02:58:48,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:48,049 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:58:48,049 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:58:48,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-28 02:58:48,049 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:58:48,050 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:58:48,050 INFO L85 PathProgramCache]: Analyzing trace with hash -63369271, now seen corresponding path program 6 times [2024-06-28 02:58:48,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:58:48,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055814046] [2024-06-28 02:58:48,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:58:48,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:58:48,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:58:48,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:58:48,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:58:48,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055814046] [2024-06-28 02:58:48,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055814046] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:58:48,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:58:48,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:58:48,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509135246] [2024-06-28 02:58:48,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:58:48,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:58:48,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:58:48,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:58:48,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:58:49,039 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 02:58:49,039 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 367 transitions, 4558 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:49,039 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:58:49,040 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 02:58:49,040 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:58:49,456 INFO L124 PetriNetUnfolderBase]: 878/1522 cut-off events. [2024-06-28 02:58:49,456 INFO L125 PetriNetUnfolderBase]: For 149981/149981 co-relation queries the response was YES. [2024-06-28 02:58:49,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11590 conditions, 1522 events. 878/1522 cut-off events. For 149981/149981 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 8064 event pairs, 96 based on Foata normal form. 2/1523 useless extension candidates. Maximal degree in co-relation 11441. Up to 1349 conditions per place. [2024-06-28 02:58:49,474 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 330 selfloop transitions, 50 changer transitions 0/382 dead transitions. [2024-06-28 02:58:49,475 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 382 transitions, 5388 flow [2024-06-28 02:58:49,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:58:49,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:58:49,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-28 02:58:49,476 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35795454545454547 [2024-06-28 02:58:49,476 INFO L175 Difference]: Start difference. First operand has 338 places, 367 transitions, 4558 flow. Second operand 11 states and 126 transitions. [2024-06-28 02:58:49,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 382 transitions, 5388 flow [2024-06-28 02:58:50,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 382 transitions, 5230 flow, removed 34 selfloop flow, removed 5 redundant places. [2024-06-28 02:58:50,184 INFO L231 Difference]: Finished difference. Result has 344 places, 368 transitions, 4536 flow [2024-06-28 02:58:50,184 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4400, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=367, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=317, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4536, PETRI_PLACES=344, PETRI_TRANSITIONS=368} [2024-06-28 02:58:50,185 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 313 predicate places. [2024-06-28 02:58:50,185 INFO L495 AbstractCegarLoop]: Abstraction has has 344 places, 368 transitions, 4536 flow [2024-06-28 02:58:50,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:50,185 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:58:50,185 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:58:50,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-28 02:58:50,185 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:58:50,186 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:58:50,186 INFO L85 PathProgramCache]: Analyzing trace with hash -63364497, now seen corresponding path program 13 times [2024-06-28 02:58:50,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:58:50,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579625312] [2024-06-28 02:58:50,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:58:50,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:58:50,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:58:51,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:58:51,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:58:51,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579625312] [2024-06-28 02:58:51,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579625312] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:58:51,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:58:51,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:58:51,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485228543] [2024-06-28 02:58:51,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:58:51,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:58:51,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:58:51,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:58:51,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:58:51,154 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 02:58:51,154 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 368 transitions, 4536 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:51,154 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:58:51,154 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 02:58:51,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:58:51,601 INFO L124 PetriNetUnfolderBase]: 876/1519 cut-off events. [2024-06-28 02:58:51,601 INFO L125 PetriNetUnfolderBase]: For 141990/141990 co-relation queries the response was YES. [2024-06-28 02:58:51,614 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11498 conditions, 1519 events. 876/1519 cut-off events. For 141990/141990 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 8069 event pairs, 97 based on Foata normal form. 1/1519 useless extension candidates. Maximal degree in co-relation 11347. Up to 1182 conditions per place. [2024-06-28 02:58:51,619 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 281 selfloop transitions, 98 changer transitions 0/381 dead transitions. [2024-06-28 02:58:51,619 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 381 transitions, 5332 flow [2024-06-28 02:58:51,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:58:51,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:58:51,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-28 02:58:51,620 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-28 02:58:51,620 INFO L175 Difference]: Start difference. First operand has 344 places, 368 transitions, 4536 flow. Second operand 11 states and 132 transitions. [2024-06-28 02:58:51,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 381 transitions, 5332 flow [2024-06-28 02:58:52,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 345 places, 381 transitions, 5176 flow, removed 29 selfloop flow, removed 9 redundant places. [2024-06-28 02:58:52,341 INFO L231 Difference]: Finished difference. Result has 346 places, 368 transitions, 4581 flow [2024-06-28 02:58:52,341 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4380, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=368, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4581, PETRI_PLACES=346, PETRI_TRANSITIONS=368} [2024-06-28 02:58:52,341 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 315 predicate places. [2024-06-28 02:58:52,341 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 368 transitions, 4581 flow [2024-06-28 02:58:52,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:52,342 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:58:52,342 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:58:52,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-28 02:58:52,342 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:58:52,342 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:58:52,342 INFO L85 PathProgramCache]: Analyzing trace with hash 1098887769, now seen corresponding path program 6 times [2024-06-28 02:58:52,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:58:52,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356786331] [2024-06-28 02:58:52,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:58:52,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:58:52,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:58:53,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:58:53,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:58:53,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356786331] [2024-06-28 02:58:53,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356786331] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:58:53,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:58:53,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:58:53,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813487375] [2024-06-28 02:58:53,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:58:53,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:58:53,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:58:53,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:58:53,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:58:53,432 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 02:58:53,433 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 368 transitions, 4581 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:53,433 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:58:53,433 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 02:58:53,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:58:53,989 INFO L124 PetriNetUnfolderBase]: 880/1527 cut-off events. [2024-06-28 02:58:53,990 INFO L125 PetriNetUnfolderBase]: For 149787/149787 co-relation queries the response was YES. [2024-06-28 02:58:54,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11597 conditions, 1527 events. 880/1527 cut-off events. For 149787/149787 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 8134 event pairs, 152 based on Foata normal form. 2/1528 useless extension candidates. Maximal degree in co-relation 11445. Up to 1476 conditions per place. [2024-06-28 02:58:54,006 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 358 selfloop transitions, 21 changer transitions 0/381 dead transitions. [2024-06-28 02:58:54,006 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 381 transitions, 5387 flow [2024-06-28 02:58:54,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:58:54,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:58:54,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-28 02:58:54,007 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.340625 [2024-06-28 02:58:54,007 INFO L175 Difference]: Start difference. First operand has 346 places, 368 transitions, 4581 flow. Second operand 10 states and 109 transitions. [2024-06-28 02:58:54,007 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 381 transitions, 5387 flow [2024-06-28 02:58:54,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 381 transitions, 5182 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-28 02:58:54,687 INFO L231 Difference]: Finished difference. Result has 348 places, 369 transitions, 4443 flow [2024-06-28 02:58:54,687 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4376, PETRI_DIFFERENCE_MINUEND_PLACES=338, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=368, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=347, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4443, PETRI_PLACES=348, PETRI_TRANSITIONS=369} [2024-06-28 02:58:54,688 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 317 predicate places. [2024-06-28 02:58:54,688 INFO L495 AbstractCegarLoop]: Abstraction has has 348 places, 369 transitions, 4443 flow [2024-06-28 02:58:54,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:54,688 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:58:54,688 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:58:54,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-28 02:58:54,688 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:58:54,689 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:58:54,689 INFO L85 PathProgramCache]: Analyzing trace with hash 1391056355, now seen corresponding path program 7 times [2024-06-28 02:58:54,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:58:54,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266043579] [2024-06-28 02:58:54,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:58:54,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:58:54,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:58:55,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:58:55,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:58:55,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266043579] [2024-06-28 02:58:55,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266043579] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:58:55,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:58:55,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:58:55,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615480365] [2024-06-28 02:58:55,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:58:55,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:58:55,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:58:55,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:58:55,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:58:56,033 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 02:58:56,034 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 369 transitions, 4443 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:56,034 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:58:56,034 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 02:58:56,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:58:56,578 INFO L124 PetriNetUnfolderBase]: 890/1545 cut-off events. [2024-06-28 02:58:56,579 INFO L125 PetriNetUnfolderBase]: For 152357/152357 co-relation queries the response was YES. [2024-06-28 02:58:56,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11567 conditions, 1545 events. 890/1545 cut-off events. For 152357/152357 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 8271 event pairs, 142 based on Foata normal form. 2/1546 useless extension candidates. Maximal degree in co-relation 11414. Up to 1459 conditions per place. [2024-06-28 02:58:56,597 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 356 selfloop transitions, 28 changer transitions 0/386 dead transitions. [2024-06-28 02:58:56,597 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 386 transitions, 5304 flow [2024-06-28 02:58:56,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:58:56,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:58:56,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2024-06-28 02:58:56,598 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.359375 [2024-06-28 02:58:56,598 INFO L175 Difference]: Start difference. First operand has 348 places, 369 transitions, 4443 flow. Second operand 10 states and 115 transitions. [2024-06-28 02:58:56,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 386 transitions, 5304 flow [2024-06-28 02:58:57,278 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 386 transitions, 5249 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-28 02:58:57,283 INFO L231 Difference]: Finished difference. Result has 351 places, 373 transitions, 4517 flow [2024-06-28 02:58:57,283 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4388, PETRI_DIFFERENCE_MINUEND_PLACES=340, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=369, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=343, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4517, PETRI_PLACES=351, PETRI_TRANSITIONS=373} [2024-06-28 02:58:57,283 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 320 predicate places. [2024-06-28 02:58:57,283 INFO L495 AbstractCegarLoop]: Abstraction has has 351 places, 373 transitions, 4517 flow [2024-06-28 02:58:57,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:57,284 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:58:57,284 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:58:57,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-28 02:58:57,284 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:58:57,284 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:58:57,284 INFO L85 PathProgramCache]: Analyzing trace with hash 485546347, now seen corresponding path program 14 times [2024-06-28 02:58:57,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:58:57,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128143103] [2024-06-28 02:58:57,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:58:57,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:58:57,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:58:58,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:58:58,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:58:58,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128143103] [2024-06-28 02:58:58,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128143103] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:58:58,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:58:58,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:58:58,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108217438] [2024-06-28 02:58:58,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:58:58,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:58:58,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:58:58,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:58:58,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:58:58,429 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 02:58:58,429 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 351 places, 373 transitions, 4517 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:58,429 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:58:58,429 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 02:58:58,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:58:58,940 INFO L124 PetriNetUnfolderBase]: 893/1550 cut-off events. [2024-06-28 02:58:58,940 INFO L125 PetriNetUnfolderBase]: For 150051/150051 co-relation queries the response was YES. [2024-06-28 02:58:58,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11679 conditions, 1550 events. 893/1550 cut-off events. For 150051/150051 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 8303 event pairs, 150 based on Foata normal form. 1/1550 useless extension candidates. Maximal degree in co-relation 11524. Up to 1518 conditions per place. [2024-06-28 02:58:58,958 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 366 selfloop transitions, 18 changer transitions 0/386 dead transitions. [2024-06-28 02:58:58,959 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 386 transitions, 5394 flow [2024-06-28 02:58:58,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:58:58,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:58:58,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-28 02:58:58,960 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.334375 [2024-06-28 02:58:58,960 INFO L175 Difference]: Start difference. First operand has 351 places, 373 transitions, 4517 flow. Second operand 10 states and 107 transitions. [2024-06-28 02:58:58,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 386 transitions, 5394 flow [2024-06-28 02:58:59,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 386 transitions, 5333 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-06-28 02:58:59,667 INFO L231 Difference]: Finished difference. Result has 357 places, 377 transitions, 4598 flow [2024-06-28 02:58:59,667 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4456, PETRI_DIFFERENCE_MINUEND_PLACES=346, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=373, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=355, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4598, PETRI_PLACES=357, PETRI_TRANSITIONS=377} [2024-06-28 02:58:59,667 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 326 predicate places. [2024-06-28 02:58:59,668 INFO L495 AbstractCegarLoop]: Abstraction has has 357 places, 377 transitions, 4598 flow [2024-06-28 02:58:59,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:59,668 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:58:59,668 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:58:59,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-28 02:58:59,668 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:58:59,668 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:58:59,669 INFO L85 PathProgramCache]: Analyzing trace with hash 1382724485, now seen corresponding path program 8 times [2024-06-28 02:58:59,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:58:59,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788554317] [2024-06-28 02:58:59,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:58:59,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:58:59,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:59:00,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:59:00,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:59:00,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788554317] [2024-06-28 02:59:00,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788554317] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:59:00,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:59:00,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:59:00,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631671780] [2024-06-28 02:59:00,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:59:00,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:59:00,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:59:00,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:59:00,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:59:00,847 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 02:59:00,847 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 357 places, 377 transitions, 4598 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:00,847 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:59:00,847 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 02:59:00,847 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:59:01,343 INFO L124 PetriNetUnfolderBase]: 897/1558 cut-off events. [2024-06-28 02:59:01,343 INFO L125 PetriNetUnfolderBase]: For 158507/158507 co-relation queries the response was YES. [2024-06-28 02:59:01,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11745 conditions, 1558 events. 897/1558 cut-off events. For 158507/158507 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 8358 event pairs, 148 based on Foata normal form. 2/1559 useless extension candidates. Maximal degree in co-relation 11588. Up to 1472 conditions per place. [2024-06-28 02:59:01,362 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 363 selfloop transitions, 28 changer transitions 0/393 dead transitions. [2024-06-28 02:59:01,362 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 366 places, 393 transitions, 5457 flow [2024-06-28 02:59:01,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:59:01,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:59:01,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 117 transitions. [2024-06-28 02:59:01,363 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.365625 [2024-06-28 02:59:01,364 INFO L175 Difference]: Start difference. First operand has 357 places, 377 transitions, 4598 flow. Second operand 10 states and 117 transitions. [2024-06-28 02:59:01,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 366 places, 393 transitions, 5457 flow [2024-06-28 02:59:02,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 359 places, 393 transitions, 5372 flow, removed 26 selfloop flow, removed 7 redundant places. [2024-06-28 02:59:02,123 INFO L231 Difference]: Finished difference. Result has 361 places, 379 transitions, 4622 flow [2024-06-28 02:59:02,123 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4514, PETRI_DIFFERENCE_MINUEND_PLACES=350, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=377, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=349, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4622, PETRI_PLACES=361, PETRI_TRANSITIONS=379} [2024-06-28 02:59:02,124 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 330 predicate places. [2024-06-28 02:59:02,124 INFO L495 AbstractCegarLoop]: Abstraction has has 361 places, 379 transitions, 4622 flow [2024-06-28 02:59:02,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:02,124 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:59:02,124 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:59:02,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-28 02:59:02,125 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:59:02,125 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:59:02,125 INFO L85 PathProgramCache]: Analyzing trace with hash 1161079445, now seen corresponding path program 9 times [2024-06-28 02:59:02,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:59:02,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919049146] [2024-06-28 02:59:02,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:59:02,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:59:02,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:59:03,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:59:03,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:59:03,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919049146] [2024-06-28 02:59:03,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919049146] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:59:03,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:59:03,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:59:03,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548400781] [2024-06-28 02:59:03,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:59:03,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:59:03,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:59:03,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:59:03,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:59:03,260 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 02:59:03,261 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 361 places, 379 transitions, 4622 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:03,261 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:59:03,261 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 02:59:03,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:59:03,736 INFO L124 PetriNetUnfolderBase]: 901/1566 cut-off events. [2024-06-28 02:59:03,737 INFO L125 PetriNetUnfolderBase]: For 161459/161459 co-relation queries the response was YES. [2024-06-28 02:59:03,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11830 conditions, 1566 events. 901/1566 cut-off events. For 161459/161459 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 8451 event pairs, 144 based on Foata normal form. 2/1567 useless extension candidates. Maximal degree in co-relation 11672. Up to 1480 conditions per place. [2024-06-28 02:59:03,756 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 361 selfloop transitions, 30 changer transitions 0/393 dead transitions. [2024-06-28 02:59:03,756 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 370 places, 393 transitions, 5462 flow [2024-06-28 02:59:03,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:59:03,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:59:03,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 114 transitions. [2024-06-28 02:59:03,757 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35625 [2024-06-28 02:59:03,757 INFO L175 Difference]: Start difference. First operand has 361 places, 379 transitions, 4622 flow. Second operand 10 states and 114 transitions. [2024-06-28 02:59:03,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 370 places, 393 transitions, 5462 flow [2024-06-28 02:59:04,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 393 transitions, 5390 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-28 02:59:04,507 INFO L231 Difference]: Finished difference. Result has 364 places, 380 transitions, 4640 flow [2024-06-28 02:59:04,507 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4550, PETRI_DIFFERENCE_MINUEND_PLACES=354, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=379, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=349, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4640, PETRI_PLACES=364, PETRI_TRANSITIONS=380} [2024-06-28 02:59:04,507 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 333 predicate places. [2024-06-28 02:59:04,507 INFO L495 AbstractCegarLoop]: Abstraction has has 364 places, 380 transitions, 4640 flow [2024-06-28 02:59:04,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:04,508 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:59:04,508 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:59:04,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-28 02:59:04,508 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:59:04,508 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:59:04,508 INFO L85 PathProgramCache]: Analyzing trace with hash 1489226551, now seen corresponding path program 15 times [2024-06-28 02:59:04,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:59:04,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734773473] [2024-06-28 02:59:04,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:59:04,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:59:04,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:59:05,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:59:05,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:59:05,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734773473] [2024-06-28 02:59:05,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734773473] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:59:05,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:59:05,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:59:05,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793510474] [2024-06-28 02:59:05,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:59:05,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:59:05,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:59:05,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:59:05,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:59:05,401 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 02:59:05,401 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 364 places, 380 transitions, 4640 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:05,401 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:59:05,401 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 02:59:05,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:59:05,843 INFO L124 PetriNetUnfolderBase]: 904/1571 cut-off events. [2024-06-28 02:59:05,843 INFO L125 PetriNetUnfolderBase]: For 158644/158644 co-relation queries the response was YES. [2024-06-28 02:59:05,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11909 conditions, 1571 events. 904/1571 cut-off events. For 158644/158644 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 8478 event pairs, 158 based on Foata normal form. 1/1571 useless extension candidates. Maximal degree in co-relation 11750. Up to 1497 conditions per place. [2024-06-28 02:59:05,863 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 358 selfloop transitions, 34 changer transitions 0/394 dead transitions. [2024-06-28 02:59:05,863 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 374 places, 394 transitions, 5543 flow [2024-06-28 02:59:05,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:59:05,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:59:05,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-28 02:59:05,864 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3494318181818182 [2024-06-28 02:59:05,864 INFO L175 Difference]: Start difference. First operand has 364 places, 380 transitions, 4640 flow. Second operand 11 states and 123 transitions. [2024-06-28 02:59:05,865 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 374 places, 394 transitions, 5543 flow [2024-06-28 02:59:06,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 394 transitions, 5448 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-28 02:59:06,642 INFO L231 Difference]: Finished difference. Result has 366 places, 384 transitions, 4719 flow [2024-06-28 02:59:06,643 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4545, PETRI_DIFFERENCE_MINUEND_PLACES=355, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=380, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=348, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4719, PETRI_PLACES=366, PETRI_TRANSITIONS=384} [2024-06-28 02:59:06,643 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 335 predicate places. [2024-06-28 02:59:06,643 INFO L495 AbstractCegarLoop]: Abstraction has has 366 places, 384 transitions, 4719 flow [2024-06-28 02:59:06,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:06,643 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:59:06,643 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:59:06,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-28 02:59:06,644 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:59:06,644 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:59:06,644 INFO L85 PathProgramCache]: Analyzing trace with hash 1267581511, now seen corresponding path program 16 times [2024-06-28 02:59:06,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:59:06,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733278344] [2024-06-28 02:59:06,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:59:06,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:59:06,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:59:07,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:59:07,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:59:07,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733278344] [2024-06-28 02:59:07,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733278344] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:59:07,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:59:07,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:59:07,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946586383] [2024-06-28 02:59:07,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:59:07,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:59:07,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:59:07,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:59:07,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:59:07,646 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 02:59:07,646 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 384 transitions, 4719 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:07,646 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:59:07,646 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 02:59:07,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:59:08,075 INFO L124 PetriNetUnfolderBase]: 907/1576 cut-off events. [2024-06-28 02:59:08,076 INFO L125 PetriNetUnfolderBase]: For 161657/161657 co-relation queries the response was YES. [2024-06-28 02:59:08,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11981 conditions, 1576 events. 907/1576 cut-off events. For 161657/161657 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 8495 event pairs, 156 based on Foata normal form. 1/1576 useless extension candidates. Maximal degree in co-relation 11822. Up to 1502 conditions per place. [2024-06-28 02:59:08,096 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 359 selfloop transitions, 37 changer transitions 0/398 dead transitions. [2024-06-28 02:59:08,096 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 376 places, 398 transitions, 5638 flow [2024-06-28 02:59:08,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:59:08,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:59:08,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-28 02:59:08,097 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3465909090909091 [2024-06-28 02:59:08,097 INFO L175 Difference]: Start difference. First operand has 366 places, 384 transitions, 4719 flow. Second operand 11 states and 122 transitions. [2024-06-28 02:59:08,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 376 places, 398 transitions, 5638 flow [2024-06-28 02:59:08,863 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 367 places, 398 transitions, 5439 flow, removed 38 selfloop flow, removed 9 redundant places. [2024-06-28 02:59:08,868 INFO L231 Difference]: Finished difference. Result has 368 places, 388 transitions, 4708 flow [2024-06-28 02:59:08,868 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4528, PETRI_DIFFERENCE_MINUEND_PLACES=357, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=384, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=349, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4708, PETRI_PLACES=368, PETRI_TRANSITIONS=388} [2024-06-28 02:59:08,868 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 337 predicate places. [2024-06-28 02:59:08,868 INFO L495 AbstractCegarLoop]: Abstraction has has 368 places, 388 transitions, 4708 flow [2024-06-28 02:59:08,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:08,868 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:59:08,869 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:59:08,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-28 02:59:08,869 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:59:08,869 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:59:08,869 INFO L85 PathProgramCache]: Analyzing trace with hash 1391066585, now seen corresponding path program 10 times [2024-06-28 02:59:08,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:59:08,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477924635] [2024-06-28 02:59:08,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:59:08,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:59:08,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:59:09,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:59:09,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:59:09,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477924635] [2024-06-28 02:59:09,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477924635] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:59:09,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:59:09,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:59:09,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494597866] [2024-06-28 02:59:09,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:59:09,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:59:09,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:59:09,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:59:09,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:59:10,046 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 02:59:10,046 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 368 places, 388 transitions, 4708 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:10,046 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:59:10,046 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 02:59:10,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:59:10,538 INFO L124 PetriNetUnfolderBase]: 911/1584 cut-off events. [2024-06-28 02:59:10,538 INFO L125 PetriNetUnfolderBase]: For 170127/170127 co-relation queries the response was YES. [2024-06-28 02:59:10,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11998 conditions, 1584 events. 911/1584 cut-off events. For 170127/170127 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 8584 event pairs, 150 based on Foata normal form. 2/1585 useless extension candidates. Maximal degree in co-relation 11839. Up to 1472 conditions per place. [2024-06-28 02:59:10,558 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 368 selfloop transitions, 32 changer transitions 0/402 dead transitions. [2024-06-28 02:59:10,559 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 377 places, 402 transitions, 5566 flow [2024-06-28 02:59:10,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:59:10,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:59:10,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2024-06-28 02:59:10,560 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.359375 [2024-06-28 02:59:10,560 INFO L175 Difference]: Start difference. First operand has 368 places, 388 transitions, 4708 flow. Second operand 10 states and 115 transitions. [2024-06-28 02:59:10,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 377 places, 402 transitions, 5566 flow [2024-06-28 02:59:11,342 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 370 places, 402 transitions, 5389 flow, removed 34 selfloop flow, removed 7 redundant places. [2024-06-28 02:59:11,346 INFO L231 Difference]: Finished difference. Result has 371 places, 389 transitions, 4627 flow [2024-06-28 02:59:11,346 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4531, PETRI_DIFFERENCE_MINUEND_PLACES=361, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=388, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=356, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4627, PETRI_PLACES=371, PETRI_TRANSITIONS=389} [2024-06-28 02:59:11,347 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 340 predicate places. [2024-06-28 02:59:11,347 INFO L495 AbstractCegarLoop]: Abstraction has has 371 places, 389 transitions, 4627 flow [2024-06-28 02:59:11,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:11,347 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:59:11,348 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:59:11,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-28 02:59:11,348 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:59:11,348 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:59:11,348 INFO L85 PathProgramCache]: Analyzing trace with hash -892722687, now seen corresponding path program 17 times [2024-06-28 02:59:11,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:59:11,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617421860] [2024-06-28 02:59:11,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:59:11,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:59:11,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:59:12,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:59:12,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:59:12,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617421860] [2024-06-28 02:59:12,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617421860] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:59:12,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:59:12,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:59:12,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561958968] [2024-06-28 02:59:12,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:59:12,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:59:12,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:59:12,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:59:12,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:59:12,339 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 02:59:12,339 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 371 places, 389 transitions, 4627 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:12,339 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:59:12,339 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 02:59:12,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:59:12,805 INFO L124 PetriNetUnfolderBase]: 914/1589 cut-off events. [2024-06-28 02:59:12,805 INFO L125 PetriNetUnfolderBase]: For 167242/167242 co-relation queries the response was YES. [2024-06-28 02:59:12,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12041 conditions, 1589 events. 914/1589 cut-off events. For 167242/167242 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 8600 event pairs, 154 based on Foata normal form. 1/1589 useless extension candidates. Maximal degree in co-relation 11881. Up to 1515 conditions per place. [2024-06-28 02:59:12,825 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 360 selfloop transitions, 40 changer transitions 0/402 dead transitions. [2024-06-28 02:59:12,825 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 381 places, 402 transitions, 5533 flow [2024-06-28 02:59:12,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:59:12,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:59:12,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-28 02:59:12,826 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-28 02:59:12,826 INFO L175 Difference]: Start difference. First operand has 371 places, 389 transitions, 4627 flow. Second operand 11 states and 121 transitions. [2024-06-28 02:59:12,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 381 places, 402 transitions, 5533 flow [2024-06-28 02:59:13,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 373 places, 402 transitions, 5447 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-28 02:59:13,668 INFO L231 Difference]: Finished difference. Result has 374 places, 392 transitions, 4714 flow [2024-06-28 02:59:13,668 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4541, PETRI_DIFFERENCE_MINUEND_PLACES=363, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=389, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=350, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4714, PETRI_PLACES=374, PETRI_TRANSITIONS=392} [2024-06-28 02:59:13,668 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 343 predicate places. [2024-06-28 02:59:13,669 INFO L495 AbstractCegarLoop]: Abstraction has has 374 places, 392 transitions, 4714 flow [2024-06-28 02:59:13,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:13,670 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:59:13,670 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:59:13,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-28 02:59:13,671 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:59:13,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:59:13,671 INFO L85 PathProgramCache]: Analyzing trace with hash 1261147771, now seen corresponding path program 18 times [2024-06-28 02:59:13,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:59:13,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776754348] [2024-06-28 02:59:13,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:59:13,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:59:13,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:59:14,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:59:14,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:59:14,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776754348] [2024-06-28 02:59:14,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776754348] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:59:14,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:59:14,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:59:14,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964782605] [2024-06-28 02:59:14,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:59:14,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:59:14,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:59:14,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:59:14,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:59:14,555 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 02:59:14,555 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 374 places, 392 transitions, 4714 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:14,556 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:59:14,556 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 02:59:14,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:59:14,988 INFO L124 PetriNetUnfolderBase]: 917/1594 cut-off events. [2024-06-28 02:59:14,989 INFO L125 PetriNetUnfolderBase]: For 170427/170427 co-relation queries the response was YES. [2024-06-28 02:59:15,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12134 conditions, 1594 events. 917/1594 cut-off events. For 170427/170427 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 8644 event pairs, 156 based on Foata normal form. 1/1594 useless extension candidates. Maximal degree in co-relation 11973. Up to 1501 conditions per place. [2024-06-28 02:59:15,010 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 351 selfloop transitions, 54 changer transitions 0/407 dead transitions. [2024-06-28 02:59:15,010 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 384 places, 407 transitions, 5926 flow [2024-06-28 02:59:15,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:59:15,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:59:15,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-28 02:59:15,011 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3465909090909091 [2024-06-28 02:59:15,011 INFO L175 Difference]: Start difference. First operand has 374 places, 392 transitions, 4714 flow. Second operand 11 states and 122 transitions. [2024-06-28 02:59:15,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 384 places, 407 transitions, 5926 flow [2024-06-28 02:59:15,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 376 places, 407 transitions, 5723 flow, removed 36 selfloop flow, removed 8 redundant places. [2024-06-28 02:59:15,711 INFO L231 Difference]: Finished difference. Result has 377 places, 396 transitions, 4784 flow [2024-06-28 02:59:15,711 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4511, PETRI_DIFFERENCE_MINUEND_PLACES=366, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=392, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=340, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4784, PETRI_PLACES=377, PETRI_TRANSITIONS=396} [2024-06-28 02:59:15,711 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 346 predicate places. [2024-06-28 02:59:15,711 INFO L495 AbstractCegarLoop]: Abstraction has has 377 places, 396 transitions, 4784 flow [2024-06-28 02:59:15,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:15,711 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:59:15,712 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:59:15,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-28 02:59:15,712 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:59:15,712 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:59:15,712 INFO L85 PathProgramCache]: Analyzing trace with hash -1196581971, now seen corresponding path program 7 times [2024-06-28 02:59:15,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:59:15,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826843817] [2024-06-28 02:59:15,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:59:15,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:59:15,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:59:16,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:59:16,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:59:16,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826843817] [2024-06-28 02:59:16,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826843817] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:59:16,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:59:16,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:59:16,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175914262] [2024-06-28 02:59:16,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:59:16,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:59:16,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:59:16,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:59:16,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:59:16,585 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 02:59:16,586 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 396 transitions, 4784 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:16,586 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:59:16,586 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 02:59:16,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:59:16,986 INFO L124 PetriNetUnfolderBase]: 914/1589 cut-off events. [2024-06-28 02:59:16,986 INFO L125 PetriNetUnfolderBase]: For 166823/166823 co-relation queries the response was YES. [2024-06-28 02:59:17,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11844 conditions, 1589 events. 914/1589 cut-off events. For 166823/166823 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 8613 event pairs, 149 based on Foata normal form. 2/1590 useless extension candidates. Maximal degree in co-relation 11682. Up to 1554 conditions per place. [2024-06-28 02:59:17,006 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 387 selfloop transitions, 18 changer transitions 0/407 dead transitions. [2024-06-28 02:59:17,007 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 387 places, 407 transitions, 5618 flow [2024-06-28 02:59:17,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:59:17,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:59:17,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 115 transitions. [2024-06-28 02:59:17,008 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32670454545454547 [2024-06-28 02:59:17,008 INFO L175 Difference]: Start difference. First operand has 377 places, 396 transitions, 4784 flow. Second operand 11 states and 115 transitions. [2024-06-28 02:59:17,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 387 places, 407 transitions, 5618 flow [2024-06-28 02:59:17,776 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 382 places, 407 transitions, 5491 flow, removed 50 selfloop flow, removed 5 redundant places. [2024-06-28 02:59:17,780 INFO L231 Difference]: Finished difference. Result has 383 places, 396 transitions, 4697 flow [2024-06-28 02:59:17,780 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4657, PETRI_DIFFERENCE_MINUEND_PLACES=372, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=396, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=378, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4697, PETRI_PLACES=383, PETRI_TRANSITIONS=396} [2024-06-28 02:59:17,780 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 352 predicate places. [2024-06-28 02:59:17,781 INFO L495 AbstractCegarLoop]: Abstraction has has 383 places, 396 transitions, 4697 flow [2024-06-28 02:59:17,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:17,781 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:59:17,781 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:59:17,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-28 02:59:17,781 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:59:17,781 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:59:17,782 INFO L85 PathProgramCache]: Analyzing trace with hash 1154404091, now seen corresponding path program 19 times [2024-06-28 02:59:17,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:59:17,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699835038] [2024-06-28 02:59:17,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:59:17,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:59:17,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:59:18,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:59:18,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:59:18,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699835038] [2024-06-28 02:59:18,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699835038] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:59:18,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:59:18,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:59:18,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004568965] [2024-06-28 02:59:18,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:59:18,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:59:18,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:59:18,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:59:18,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:59:18,586 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 02:59:18,586 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 383 places, 396 transitions, 4697 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:18,586 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:59:18,586 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 02:59:18,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:59:19,114 INFO L124 PetriNetUnfolderBase]: 918/1596 cut-off events. [2024-06-28 02:59:19,114 INFO L125 PetriNetUnfolderBase]: For 169833/169833 co-relation queries the response was YES. [2024-06-28 02:59:19,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11775 conditions, 1596 events. 918/1596 cut-off events. For 169833/169833 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 8664 event pairs, 139 based on Foata normal form. 3/1598 useless extension candidates. Maximal degree in co-relation 11611. Up to 1386 conditions per place. [2024-06-28 02:59:19,132 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 351 selfloop transitions, 61 changer transitions 0/414 dead transitions. [2024-06-28 02:59:19,132 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 393 places, 414 transitions, 5641 flow [2024-06-28 02:59:19,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:59:19,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:59:19,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-28 02:59:19,133 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-28 02:59:19,133 INFO L175 Difference]: Start difference. First operand has 383 places, 396 transitions, 4697 flow. Second operand 11 states and 132 transitions. [2024-06-28 02:59:19,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 393 places, 414 transitions, 5641 flow [2024-06-28 02:59:19,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 382 places, 414 transitions, 5473 flow, removed 36 selfloop flow, removed 11 redundant places. [2024-06-28 02:59:19,961 INFO L231 Difference]: Finished difference. Result has 383 places, 398 transitions, 4737 flow [2024-06-28 02:59:19,962 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4529, PETRI_DIFFERENCE_MINUEND_PLACES=372, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=396, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=335, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4737, PETRI_PLACES=383, PETRI_TRANSITIONS=398} [2024-06-28 02:59:19,962 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 352 predicate places. [2024-06-28 02:59:19,962 INFO L495 AbstractCegarLoop]: Abstraction has has 383 places, 398 transitions, 4737 flow [2024-06-28 02:59:19,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:19,962 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:59:19,962 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:59:19,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-28 02:59:19,963 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:59:19,963 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:59:19,963 INFO L85 PathProgramCache]: Analyzing trace with hash -722105039, now seen corresponding path program 11 times [2024-06-28 02:59:19,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:59:19,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375595940] [2024-06-28 02:59:19,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:59:19,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:59:19,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:59:20,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:59:20,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:59:20,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375595940] [2024-06-28 02:59:20,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375595940] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:59:20,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:59:20,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:59:20,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543209457] [2024-06-28 02:59:20,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:59:20,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:59:21,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:59:21,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:59:21,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:59:21,113 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 02:59:21,113 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 383 places, 398 transitions, 4737 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:21,113 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:59:21,113 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 02:59:21,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:59:21,615 INFO L124 PetriNetUnfolderBase]: 922/1604 cut-off events. [2024-06-28 02:59:21,615 INFO L125 PetriNetUnfolderBase]: For 165907/165907 co-relation queries the response was YES. [2024-06-28 02:59:21,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11853 conditions, 1604 events. 922/1604 cut-off events. For 165907/165907 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 8726 event pairs, 149 based on Foata normal form. 2/1605 useless extension candidates. Maximal degree in co-relation 11689. Up to 1529 conditions per place. [2024-06-28 02:59:21,634 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 387 selfloop transitions, 22 changer transitions 0/411 dead transitions. [2024-06-28 02:59:21,635 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 392 places, 411 transitions, 5611 flow [2024-06-28 02:59:21,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:59:21,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:59:21,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-28 02:59:21,635 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-28 02:59:21,636 INFO L175 Difference]: Start difference. First operand has 383 places, 398 transitions, 4737 flow. Second operand 10 states and 110 transitions. [2024-06-28 02:59:21,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 392 places, 411 transitions, 5611 flow [2024-06-28 02:59:22,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 380 places, 411 transitions, 5322 flow, removed 47 selfloop flow, removed 12 redundant places. [2024-06-28 02:59:22,479 INFO L231 Difference]: Finished difference. Result has 381 places, 399 transitions, 4527 flow [2024-06-28 02:59:22,479 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4450, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=398, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=376, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4527, PETRI_PLACES=381, PETRI_TRANSITIONS=399} [2024-06-28 02:59:22,480 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 350 predicate places. [2024-06-28 02:59:22,480 INFO L495 AbstractCegarLoop]: Abstraction has has 381 places, 399 transitions, 4527 flow [2024-06-28 02:59:22,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:22,480 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:59:22,480 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:59:22,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-28 02:59:22,480 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:59:22,500 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:59:22,500 INFO L85 PathProgramCache]: Analyzing trace with hash -722412497, now seen corresponding path program 1 times [2024-06-28 02:59:22,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:59:22,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801499792] [2024-06-28 02:59:22,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:59:22,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:59:22,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:59:23,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:59:23,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:59:23,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801499792] [2024-06-28 02:59:23,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801499792] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:59:23,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:59:23,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:59:23,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642428314] [2024-06-28 02:59:23,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:59:23,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:59:23,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:59:23,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:59:23,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:59:23,482 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 02:59:23,482 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 381 places, 399 transitions, 4527 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:23,482 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:59:23,482 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 02:59:23,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:59:23,970 INFO L124 PetriNetUnfolderBase]: 919/1600 cut-off events. [2024-06-28 02:59:23,970 INFO L125 PetriNetUnfolderBase]: For 154581/154581 co-relation queries the response was YES. [2024-06-28 02:59:23,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11206 conditions, 1600 events. 919/1600 cut-off events. For 154581/154581 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 8705 event pairs, 146 based on Foata normal form. 2/1601 useless extension candidates. Maximal degree in co-relation 11044. Up to 1534 conditions per place. [2024-06-28 02:59:23,987 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 390 selfloop transitions, 26 changer transitions 0/418 dead transitions. [2024-06-28 02:59:23,987 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 391 places, 418 transitions, 5705 flow [2024-06-28 02:59:23,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:59:23,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:59:23,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-28 02:59:23,988 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-28 02:59:23,988 INFO L175 Difference]: Start difference. First operand has 381 places, 399 transitions, 4527 flow. Second operand 11 states and 121 transitions. [2024-06-28 02:59:23,988 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 391 places, 418 transitions, 5705 flow [2024-06-28 02:59:24,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 383 places, 418 transitions, 5640 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-28 02:59:24,634 INFO L231 Difference]: Finished difference. Result has 385 places, 403 transitions, 4608 flow [2024-06-28 02:59:24,634 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4462, PETRI_DIFFERENCE_MINUEND_PLACES=373, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=399, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=374, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4608, PETRI_PLACES=385, PETRI_TRANSITIONS=403} [2024-06-28 02:59:24,634 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 354 predicate places. [2024-06-28 02:59:24,634 INFO L495 AbstractCegarLoop]: Abstraction has has 385 places, 403 transitions, 4608 flow [2024-06-28 02:59:24,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:24,635 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:59:24,635 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:59:24,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-28 02:59:24,635 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:59:24,635 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:59:24,635 INFO L85 PathProgramCache]: Analyzing trace with hash 1983139289, now seen corresponding path program 12 times [2024-06-28 02:59:24,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:59:24,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236141589] [2024-06-28 02:59:24,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:59:24,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:59:24,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:59:25,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:59:25,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:59:25,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236141589] [2024-06-28 02:59:25,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236141589] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:59:25,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:59:25,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:59:25,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720414772] [2024-06-28 02:59:25,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:59:25,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:59:25,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:59:25,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:59:25,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:59:25,621 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 02:59:25,621 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 385 places, 403 transitions, 4608 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:25,621 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:59:25,621 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 02:59:25,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:59:26,178 INFO L124 PetriNetUnfolderBase]: 923/1608 cut-off events. [2024-06-28 02:59:26,178 INFO L125 PetriNetUnfolderBase]: For 157494/157494 co-relation queries the response was YES. [2024-06-28 02:59:26,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11308 conditions, 1608 events. 923/1608 cut-off events. For 157494/157494 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 8749 event pairs, 148 based on Foata normal form. 2/1609 useless extension candidates. Maximal degree in co-relation 11144. Up to 1563 conditions per place. [2024-06-28 02:59:26,193 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 399 selfloop transitions, 15 changer transitions 0/416 dead transitions. [2024-06-28 02:59:26,193 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 394 places, 416 transitions, 5490 flow [2024-06-28 02:59:26,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:59:26,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:59:26,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-28 02:59:26,194 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33125 [2024-06-28 02:59:26,194 INFO L175 Difference]: Start difference. First operand has 385 places, 403 transitions, 4608 flow. Second operand 10 states and 106 transitions. [2024-06-28 02:59:26,194 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 394 places, 416 transitions, 5490 flow [2024-06-28 02:59:26,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 387 places, 416 transitions, 5418 flow, removed 22 selfloop flow, removed 7 redundant places. [2024-06-28 02:59:26,786 INFO L231 Difference]: Finished difference. Result has 388 places, 404 transitions, 4600 flow [2024-06-28 02:59:26,786 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4536, PETRI_DIFFERENCE_MINUEND_PLACES=378, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=403, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=388, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4600, PETRI_PLACES=388, PETRI_TRANSITIONS=404} [2024-06-28 02:59:26,786 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 357 predicate places. [2024-06-28 02:59:26,786 INFO L495 AbstractCegarLoop]: Abstraction has has 388 places, 404 transitions, 4600 flow [2024-06-28 02:59:26,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:26,787 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:59:26,787 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:59:26,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-28 02:59:26,787 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:59:26,787 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:59:26,787 INFO L85 PathProgramCache]: Analyzing trace with hash 1638696739, now seen corresponding path program 1 times [2024-06-28 02:59:26,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:59:26,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022939672] [2024-06-28 02:59:26,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:59:26,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:59:26,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:59:27,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:59:27,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:59:27,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022939672] [2024-06-28 02:59:27,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022939672] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:59:27,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:59:27,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:59:27,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727179437] [2024-06-28 02:59:27,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:59:27,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:59:27,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:59:27,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:59:27,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:59:27,751 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 02:59:27,752 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 388 places, 404 transitions, 4600 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:27,752 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:59:27,752 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 02:59:27,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:59:28,187 INFO L124 PetriNetUnfolderBase]: 920/1603 cut-off events. [2024-06-28 02:59:28,188 INFO L125 PetriNetUnfolderBase]: For 146208/146208 co-relation queries the response was YES. [2024-06-28 02:59:28,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11137 conditions, 1603 events. 920/1603 cut-off events. For 146208/146208 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 8739 event pairs, 146 based on Foata normal form. 1/1603 useless extension candidates. Maximal degree in co-relation 10971. Up to 1549 conditions per place. [2024-06-28 02:59:28,207 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 390 selfloop transitions, 24 changer transitions 0/416 dead transitions. [2024-06-28 02:59:28,207 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 397 places, 416 transitions, 5460 flow [2024-06-28 02:59:28,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:59:28,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:59:28,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-28 02:59:28,208 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-28 02:59:28,208 INFO L175 Difference]: Start difference. First operand has 388 places, 404 transitions, 4600 flow. Second operand 10 states and 110 transitions. [2024-06-28 02:59:28,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 397 places, 416 transitions, 5460 flow [2024-06-28 02:59:28,884 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 389 places, 416 transitions, 5386 flow, removed 23 selfloop flow, removed 8 redundant places. [2024-06-28 02:59:28,888 INFO L231 Difference]: Finished difference. Result has 390 places, 404 transitions, 4582 flow [2024-06-28 02:59:28,889 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4526, PETRI_DIFFERENCE_MINUEND_PLACES=380, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=404, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=380, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4582, PETRI_PLACES=390, PETRI_TRANSITIONS=404} [2024-06-28 02:59:28,889 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 359 predicate places. [2024-06-28 02:59:28,889 INFO L495 AbstractCegarLoop]: Abstraction has has 390 places, 404 transitions, 4582 flow [2024-06-28 02:59:28,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:28,889 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:59:28,889 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:59:28,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-28 02:59:28,890 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:59:28,890 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:59:28,890 INFO L85 PathProgramCache]: Analyzing trace with hash 522660663, now seen corresponding path program 13 times [2024-06-28 02:59:28,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:59:28,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107289348] [2024-06-28 02:59:28,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:59:28,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:59:28,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:59:29,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:59:29,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:59:29,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107289348] [2024-06-28 02:59:29,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107289348] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:59:29,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:59:29,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:59:29,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851306680] [2024-06-28 02:59:29,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:59:29,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:59:29,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:59:29,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:59:29,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:59:29,938 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 02:59:29,939 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 390 places, 404 transitions, 4582 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:29,939 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:59:29,939 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 02:59:29,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:59:30,435 INFO L124 PetriNetUnfolderBase]: 930/1621 cut-off events. [2024-06-28 02:59:30,435 INFO L125 PetriNetUnfolderBase]: For 155655/155655 co-relation queries the response was YES. [2024-06-28 02:59:30,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11252 conditions, 1621 events. 930/1621 cut-off events. For 155655/155655 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 8879 event pairs, 148 based on Foata normal form. 2/1622 useless extension candidates. Maximal degree in co-relation 11085. Up to 1572 conditions per place. [2024-06-28 02:59:30,456 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 399 selfloop transitions, 19 changer transitions 0/420 dead transitions. [2024-06-28 02:59:30,456 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 399 places, 420 transitions, 5507 flow [2024-06-28 02:59:30,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:59:30,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:59:30,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-28 02:59:30,457 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.346875 [2024-06-28 02:59:30,457 INFO L175 Difference]: Start difference. First operand has 390 places, 404 transitions, 4582 flow. Second operand 10 states and 111 transitions. [2024-06-28 02:59:30,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 399 places, 420 transitions, 5507 flow [2024-06-28 02:59:31,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 390 places, 420 transitions, 5459 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-28 02:59:31,151 INFO L231 Difference]: Finished difference. Result has 391 places, 407 transitions, 4633 flow [2024-06-28 02:59:31,152 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4534, PETRI_DIFFERENCE_MINUEND_PLACES=381, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=404, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=387, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4633, PETRI_PLACES=391, PETRI_TRANSITIONS=407} [2024-06-28 02:59:31,152 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 360 predicate places. [2024-06-28 02:59:31,152 INFO L495 AbstractCegarLoop]: Abstraction has has 391 places, 407 transitions, 4633 flow [2024-06-28 02:59:31,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:31,152 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:59:31,153 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:59:31,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-28 02:59:31,153 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:59:31,153 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:59:31,153 INFO L85 PathProgramCache]: Analyzing trace with hash 637740863, now seen corresponding path program 14 times [2024-06-28 02:59:31,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:59:31,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783090966] [2024-06-28 02:59:31,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:59:31,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:59:31,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:59:32,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:59:32,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:59:32,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783090966] [2024-06-28 02:59:32,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783090966] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:59:32,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:59:32,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:59:32,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498112608] [2024-06-28 02:59:32,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:59:32,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:59:32,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:59:32,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:59:32,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:59:32,318 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 02:59:32,318 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 391 places, 407 transitions, 4633 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:32,318 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:59:32,319 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 02:59:32,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:59:32,826 INFO L124 PetriNetUnfolderBase]: 934/1629 cut-off events. [2024-06-28 02:59:32,827 INFO L125 PetriNetUnfolderBase]: For 158654/158654 co-relation queries the response was YES. [2024-06-28 02:59:32,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11351 conditions, 1629 events. 934/1629 cut-off events. For 158654/158654 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 8951 event pairs, 150 based on Foata normal form. 2/1630 useless extension candidates. Maximal degree in co-relation 11183. Up to 1563 conditions per place. [2024-06-28 02:59:32,848 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 396 selfloop transitions, 23 changer transitions 0/421 dead transitions. [2024-06-28 02:59:32,848 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 400 places, 421 transitions, 5537 flow [2024-06-28 02:59:32,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:59:32,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:59:32,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-28 02:59:32,849 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.353125 [2024-06-28 02:59:32,849 INFO L175 Difference]: Start difference. First operand has 391 places, 407 transitions, 4633 flow. Second operand 10 states and 113 transitions. [2024-06-28 02:59:32,849 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 400 places, 421 transitions, 5537 flow [2024-06-28 02:59:33,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 393 places, 421 transitions, 5473 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-28 02:59:33,410 INFO L231 Difference]: Finished difference. Result has 394 places, 408 transitions, 4653 flow [2024-06-28 02:59:33,410 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4569, PETRI_DIFFERENCE_MINUEND_PLACES=384, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=407, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=384, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4653, PETRI_PLACES=394, PETRI_TRANSITIONS=408} [2024-06-28 02:59:33,411 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 363 predicate places. [2024-06-28 02:59:33,411 INFO L495 AbstractCegarLoop]: Abstraction has has 394 places, 408 transitions, 4653 flow [2024-06-28 02:59:33,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:33,411 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:59:33,411 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:59:33,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-28 02:59:33,411 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:59:33,411 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:59:33,412 INFO L85 PathProgramCache]: Analyzing trace with hash -1856846577, now seen corresponding path program 15 times [2024-06-28 02:59:33,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:59:33,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822363824] [2024-06-28 02:59:33,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:59:33,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:59:33,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:59:34,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:59:34,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:59:34,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822363824] [2024-06-28 02:59:34,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822363824] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:59:34,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:59:34,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:59:34,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333177835] [2024-06-28 02:59:34,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:59:34,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:59:34,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:59:34,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:59:34,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:59:34,494 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 02:59:34,494 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 394 places, 408 transitions, 4653 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:34,494 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:59:34,495 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 02:59:34,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:59:35,006 INFO L124 PetriNetUnfolderBase]: 931/1624 cut-off events. [2024-06-28 02:59:35,006 INFO L125 PetriNetUnfolderBase]: For 146571/146571 co-relation queries the response was YES. [2024-06-28 02:59:35,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11054 conditions, 1624 events. 931/1624 cut-off events. For 146571/146571 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 8910 event pairs, 149 based on Foata normal form. 2/1625 useless extension candidates. Maximal degree in co-relation 10885. Up to 1555 conditions per place. [2024-06-28 02:59:35,033 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 397 selfloop transitions, 21 changer transitions 0/420 dead transitions. [2024-06-28 02:59:35,033 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 403 places, 420 transitions, 5517 flow [2024-06-28 02:59:35,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:59:35,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:59:35,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-28 02:59:35,034 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-28 02:59:35,034 INFO L175 Difference]: Start difference. First operand has 394 places, 408 transitions, 4653 flow. Second operand 10 states and 110 transitions. [2024-06-28 02:59:35,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 403 places, 420 transitions, 5517 flow [2024-06-28 02:59:35,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 394 places, 420 transitions, 5398 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-06-28 02:59:35,663 INFO L231 Difference]: Finished difference. Result has 395 places, 408 transitions, 4580 flow [2024-06-28 02:59:35,663 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4534, PETRI_DIFFERENCE_MINUEND_PLACES=385, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=408, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=387, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4580, PETRI_PLACES=395, PETRI_TRANSITIONS=408} [2024-06-28 02:59:35,663 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 364 predicate places. [2024-06-28 02:59:35,664 INFO L495 AbstractCegarLoop]: Abstraction has has 395 places, 408 transitions, 4580 flow [2024-06-28 02:59:35,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:35,664 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:59:35,664 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:59:35,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-28 02:59:35,664 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:59:35,664 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:59:35,665 INFO L85 PathProgramCache]: Analyzing trace with hash 2033432143, now seen corresponding path program 1 times [2024-06-28 02:59:35,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:59:35,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931792034] [2024-06-28 02:59:35,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:59:35,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:59:35,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:59:36,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:59:36,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:59:36,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931792034] [2024-06-28 02:59:36,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931792034] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:59:36,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:59:36,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:59:36,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441776078] [2024-06-28 02:59:36,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:59:36,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:59:36,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:59:36,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:59:36,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:59:36,626 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 02:59:36,627 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 395 places, 408 transitions, 4580 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:36,627 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:59:36,627 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 02:59:36,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:59:37,253 INFO L124 PetriNetUnfolderBase]: 978/1717 cut-off events. [2024-06-28 02:59:37,254 INFO L125 PetriNetUnfolderBase]: For 251687/251687 co-relation queries the response was YES. [2024-06-28 02:59:37,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13261 conditions, 1717 events. 978/1717 cut-off events. For 251687/251687 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 9457 event pairs, 99 based on Foata normal form. 2/1718 useless extension candidates. Maximal degree in co-relation 13092. Up to 1455 conditions per place. [2024-06-28 02:59:37,276 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 402 selfloop transitions, 41 changer transitions 0/445 dead transitions. [2024-06-28 02:59:37,277 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 407 places, 445 transitions, 5970 flow [2024-06-28 02:59:37,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 02:59:37,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 02:59:37,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 162 transitions. [2024-06-28 02:59:37,278 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3894230769230769 [2024-06-28 02:59:37,278 INFO L175 Difference]: Start difference. First operand has 395 places, 408 transitions, 4580 flow. Second operand 13 states and 162 transitions. [2024-06-28 02:59:37,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 407 places, 445 transitions, 5970 flow [2024-06-28 02:59:38,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 397 places, 445 transitions, 5777 flow, removed 16 selfloop flow, removed 10 redundant places. [2024-06-28 02:59:38,127 INFO L231 Difference]: Finished difference. Result has 398 places, 410 transitions, 4547 flow [2024-06-28 02:59:38,127 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4387, PETRI_DIFFERENCE_MINUEND_PLACES=385, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=408, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=368, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4547, PETRI_PLACES=398, PETRI_TRANSITIONS=410} [2024-06-28 02:59:38,127 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 367 predicate places. [2024-06-28 02:59:38,127 INFO L495 AbstractCegarLoop]: Abstraction has has 398 places, 410 transitions, 4547 flow [2024-06-28 02:59:38,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:38,128 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:59:38,128 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:59:38,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-28 02:59:38,128 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:59:38,128 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:59:38,128 INFO L85 PathProgramCache]: Analyzing trace with hash 259501145, now seen corresponding path program 2 times [2024-06-28 02:59:38,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:59:38,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183169742] [2024-06-28 02:59:38,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:59:38,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:59:38,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:59:39,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:59:39,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:59:39,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183169742] [2024-06-28 02:59:39,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183169742] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:59:39,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:59:39,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:59:39,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330413496] [2024-06-28 02:59:39,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:59:39,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:59:39,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:59:39,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:59:39,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:59:39,332 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 02:59:39,332 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 398 places, 410 transitions, 4547 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:39,332 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:59:39,332 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 02:59:39,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:59:40,000 INFO L124 PetriNetUnfolderBase]: 966/1697 cut-off events. [2024-06-28 02:59:40,000 INFO L125 PetriNetUnfolderBase]: For 255266/255266 co-relation queries the response was YES. [2024-06-28 02:59:40,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11581 conditions, 1697 events. 966/1697 cut-off events. For 255266/255266 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 9414 event pairs, 105 based on Foata normal form. 14/1710 useless extension candidates. Maximal degree in co-relation 11412. Up to 1520 conditions per place. [2024-06-28 02:59:40,023 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 392 selfloop transitions, 39 changer transitions 11/444 dead transitions. [2024-06-28 02:59:40,023 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 411 places, 444 transitions, 5655 flow [2024-06-28 02:59:40,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-28 02:59:40,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-28 02:59:40,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 166 transitions. [2024-06-28 02:59:40,024 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3705357142857143 [2024-06-28 02:59:40,024 INFO L175 Difference]: Start difference. First operand has 398 places, 410 transitions, 4547 flow. Second operand 14 states and 166 transitions. [2024-06-28 02:59:40,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 411 places, 444 transitions, 5655 flow [2024-06-28 02:59:40,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 401 places, 444 transitions, 5496 flow, removed 23 selfloop flow, removed 10 redundant places. [2024-06-28 02:59:40,803 INFO L231 Difference]: Finished difference. Result has 402 places, 407 transitions, 4483 flow [2024-06-28 02:59:40,804 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4394, PETRI_DIFFERENCE_MINUEND_PLACES=388, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=410, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=371, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=4483, PETRI_PLACES=402, PETRI_TRANSITIONS=407} [2024-06-28 02:59:40,804 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 371 predicate places. [2024-06-28 02:59:40,804 INFO L495 AbstractCegarLoop]: Abstraction has has 402 places, 407 transitions, 4483 flow [2024-06-28 02:59:40,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:40,804 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:59:40,805 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:59:40,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-28 02:59:40,805 INFO L420 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:59:40,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:59:40,805 INFO L85 PathProgramCache]: Analyzing trace with hash 2035306093, now seen corresponding path program 3 times [2024-06-28 02:59:40,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:59:40,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922500393] [2024-06-28 02:59:40,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:59:40,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:59:40,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:59:41,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:59:41,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:59:41,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922500393] [2024-06-28 02:59:41,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922500393] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:59:41,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:59:41,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:59:41,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161823235] [2024-06-28 02:59:41,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:59:41,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:59:41,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:59:41,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:59:41,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:59:41,938 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 02:59:41,938 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 402 places, 407 transitions, 4483 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:41,938 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:59:41,938 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 02:59:41,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:59:42,566 INFO L124 PetriNetUnfolderBase]: 929/1626 cut-off events. [2024-06-28 02:59:42,566 INFO L125 PetriNetUnfolderBase]: For 156149/156149 co-relation queries the response was YES. [2024-06-28 02:59:42,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10769 conditions, 1626 events. 929/1626 cut-off events. For 156149/156149 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 8983 event pairs, 98 based on Foata normal form. 2/1627 useless extension candidates. Maximal degree in co-relation 10599. Up to 1491 conditions per place. [2024-06-28 02:59:42,582 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 392 selfloop transitions, 39 changer transitions 0/433 dead transitions. [2024-06-28 02:59:42,582 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 414 places, 433 transitions, 5425 flow [2024-06-28 02:59:42,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 02:59:42,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 02:59:42,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 150 transitions. [2024-06-28 02:59:42,583 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3605769230769231 [2024-06-28 02:59:42,583 INFO L175 Difference]: Start difference. First operand has 402 places, 407 transitions, 4483 flow. Second operand 13 states and 150 transitions. [2024-06-28 02:59:42,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 414 places, 433 transitions, 5425 flow [2024-06-28 02:59:43,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 402 places, 433 transitions, 5289 flow, removed 30 selfloop flow, removed 12 redundant places. [2024-06-28 02:59:43,247 INFO L231 Difference]: Finished difference. Result has 403 places, 407 transitions, 4430 flow [2024-06-28 02:59:43,247 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4347, PETRI_DIFFERENCE_MINUEND_PLACES=390, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=407, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=368, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4430, PETRI_PLACES=403, PETRI_TRANSITIONS=407} [2024-06-28 02:59:43,247 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 372 predicate places. [2024-06-28 02:59:43,248 INFO L495 AbstractCegarLoop]: Abstraction has has 403 places, 407 transitions, 4430 flow [2024-06-28 02:59:43,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:43,248 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:59:43,248 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:59:43,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-28 02:59:43,248 INFO L420 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:59:43,249 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:59:43,249 INFO L85 PathProgramCache]: Analyzing trace with hash 2035309968, now seen corresponding path program 1 times [2024-06-28 02:59:43,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:59:43,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749007003] [2024-06-28 02:59:43,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:59:43,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:59:43,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:59:44,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:59:44,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:59:44,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749007003] [2024-06-28 02:59:44,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749007003] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:59:44,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:59:44,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:59:44,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905600777] [2024-06-28 02:59:44,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:59:44,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:59:44,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:59:44,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:59:44,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:59:44,482 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 02:59:44,482 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 403 places, 407 transitions, 4430 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:44,482 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:59:44,482 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 02:59:44,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:59:45,057 INFO L124 PetriNetUnfolderBase]: 948/1657 cut-off events. [2024-06-28 02:59:45,058 INFO L125 PetriNetUnfolderBase]: For 175152/175152 co-relation queries the response was YES. [2024-06-28 02:59:45,075 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11309 conditions, 1657 events. 948/1657 cut-off events. For 175152/175152 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 9160 event pairs, 100 based on Foata normal form. 2/1658 useless extension candidates. Maximal degree in co-relation 11138. Up to 1536 conditions per place. [2024-06-28 02:59:45,080 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 397 selfloop transitions, 41 changer transitions 0/440 dead transitions. [2024-06-28 02:59:45,081 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 415 places, 440 transitions, 5812 flow [2024-06-28 02:59:45,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 02:59:45,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 02:59:45,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 154 transitions. [2024-06-28 02:59:45,081 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3701923076923077 [2024-06-28 02:59:45,082 INFO L175 Difference]: Start difference. First operand has 403 places, 407 transitions, 4430 flow. Second operand 13 states and 154 transitions. [2024-06-28 02:59:45,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 415 places, 440 transitions, 5812 flow [2024-06-28 02:59:45,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 403 places, 440 transitions, 5723 flow, removed 1 selfloop flow, removed 12 redundant places. [2024-06-28 02:59:45,814 INFO L231 Difference]: Finished difference. Result has 405 places, 413 transitions, 4609 flow [2024-06-28 02:59:45,815 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4346, PETRI_DIFFERENCE_MINUEND_PLACES=391, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=407, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=369, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4609, PETRI_PLACES=405, PETRI_TRANSITIONS=413} [2024-06-28 02:59:45,815 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 374 predicate places. [2024-06-28 02:59:45,815 INFO L495 AbstractCegarLoop]: Abstraction has has 405 places, 413 transitions, 4609 flow [2024-06-28 02:59:45,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:45,815 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:59:45,815 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:59:45,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-28 02:59:45,816 INFO L420 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:59:45,816 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:59:45,816 INFO L85 PathProgramCache]: Analyzing trace with hash 2122001778, now seen corresponding path program 2 times [2024-06-28 02:59:45,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:59:45,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707608438] [2024-06-28 02:59:45,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:59:45,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:59:45,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:59:46,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:59:46,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:59:46,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707608438] [2024-06-28 02:59:46,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707608438] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:59:46,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:59:46,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:59:46,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725508976] [2024-06-28 02:59:46,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:59:46,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:59:46,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:59:46,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:59:46,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:59:46,899 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 02:59:46,900 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 405 places, 413 transitions, 4609 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:46,900 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:59:46,900 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 02:59:46,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:59:47,450 INFO L124 PetriNetUnfolderBase]: 957/1672 cut-off events. [2024-06-28 02:59:47,451 INFO L125 PetriNetUnfolderBase]: For 179551/179551 co-relation queries the response was YES. [2024-06-28 02:59:47,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11524 conditions, 1672 events. 957/1672 cut-off events. For 179551/179551 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 9267 event pairs, 100 based on Foata normal form. 2/1673 useless extension candidates. Maximal degree in co-relation 11351. Up to 1565 conditions per place. [2024-06-28 02:59:47,473 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 400 selfloop transitions, 38 changer transitions 0/440 dead transitions. [2024-06-28 02:59:47,473 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 416 places, 440 transitions, 5900 flow [2024-06-28 02:59:47,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:59:47,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:59:47,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 141 transitions. [2024-06-28 02:59:47,474 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3671875 [2024-06-28 02:59:47,474 INFO L175 Difference]: Start difference. First operand has 405 places, 413 transitions, 4609 flow. Second operand 12 states and 141 transitions. [2024-06-28 02:59:47,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 416 places, 440 transitions, 5900 flow [2024-06-28 02:59:48,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 408 places, 440 transitions, 5752 flow, removed 50 selfloop flow, removed 8 redundant places. [2024-06-28 02:59:48,222 INFO L231 Difference]: Finished difference. Result has 410 places, 417 transitions, 4644 flow [2024-06-28 02:59:48,222 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4473, PETRI_DIFFERENCE_MINUEND_PLACES=397, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=413, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=378, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4644, PETRI_PLACES=410, PETRI_TRANSITIONS=417} [2024-06-28 02:59:48,222 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 379 predicate places. [2024-06-28 02:59:48,222 INFO L495 AbstractCegarLoop]: Abstraction has has 410 places, 417 transitions, 4644 flow [2024-06-28 02:59:48,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:48,223 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:59:48,223 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:59:48,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-28 02:59:48,223 INFO L420 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:59:48,223 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:59:48,223 INFO L85 PathProgramCache]: Analyzing trace with hash 2122145928, now seen corresponding path program 3 times [2024-06-28 02:59:48,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:59:48,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231658551] [2024-06-28 02:59:48,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:59:48,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:59:48,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:59:49,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:59:49,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:59:49,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231658551] [2024-06-28 02:59:49,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231658551] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:59:49,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:59:49,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:59:49,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628267694] [2024-06-28 02:59:49,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:59:49,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:59:49,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:59:49,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:59:49,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:59:49,377 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 02:59:49,377 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 410 places, 417 transitions, 4644 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:49,377 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:59:49,377 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 02:59:49,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:59:49,898 INFO L124 PetriNetUnfolderBase]: 953/1666 cut-off events. [2024-06-28 02:59:49,898 INFO L125 PetriNetUnfolderBase]: For 165862/165862 co-relation queries the response was YES. [2024-06-28 02:59:49,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11112 conditions, 1666 events. 953/1666 cut-off events. For 165862/165862 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 9231 event pairs, 99 based on Foata normal form. 2/1667 useless extension candidates. Maximal degree in co-relation 10936. Up to 1574 conditions per place. [2024-06-28 02:59:49,919 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 402 selfloop transitions, 34 changer transitions 0/438 dead transitions. [2024-06-28 02:59:49,919 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 421 places, 438 transitions, 5578 flow [2024-06-28 02:59:49,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:59:49,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:59:49,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 136 transitions. [2024-06-28 02:59:49,921 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3541666666666667 [2024-06-28 02:59:49,921 INFO L175 Difference]: Start difference. First operand has 410 places, 417 transitions, 4644 flow. Second operand 12 states and 136 transitions. [2024-06-28 02:59:49,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 421 places, 438 transitions, 5578 flow [2024-06-28 02:59:50,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 412 places, 438 transitions, 5383 flow, removed 60 selfloop flow, removed 9 redundant places. [2024-06-28 02:59:50,694 INFO L231 Difference]: Finished difference. Result has 413 places, 417 transitions, 4522 flow [2024-06-28 02:59:50,694 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4449, PETRI_DIFFERENCE_MINUEND_PLACES=401, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=417, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=383, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4522, PETRI_PLACES=413, PETRI_TRANSITIONS=417} [2024-06-28 02:59:50,695 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 382 predicate places. [2024-06-28 02:59:50,695 INFO L495 AbstractCegarLoop]: Abstraction has has 413 places, 417 transitions, 4522 flow [2024-06-28 02:59:50,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:50,695 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:59:50,695 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:59:50,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-28 02:59:50,695 INFO L420 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:59:50,696 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:59:50,696 INFO L85 PathProgramCache]: Analyzing trace with hash -369026060, now seen corresponding path program 1 times [2024-06-28 02:59:50,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:59:50,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387622920] [2024-06-28 02:59:50,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:59:50,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:59:50,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:59:51,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:59:51,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:59:51,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387622920] [2024-06-28 02:59:51,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387622920] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:59:51,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:59:51,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:59:51,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085485182] [2024-06-28 02:59:51,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:59:51,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:59:51,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:59:51,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:59:51,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:59:51,854 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 02:59:51,854 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 413 places, 417 transitions, 4522 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:51,855 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:59:51,855 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 02:59:51,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:59:52,426 INFO L124 PetriNetUnfolderBase]: 957/1674 cut-off events. [2024-06-28 02:59:52,426 INFO L125 PetriNetUnfolderBase]: For 166186/166186 co-relation queries the response was YES. [2024-06-28 02:59:52,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10958 conditions, 1674 events. 957/1674 cut-off events. For 166186/166186 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 9269 event pairs, 65 based on Foata normal form. 2/1675 useless extension candidates. Maximal degree in co-relation 10781. Up to 1146 conditions per place. [2024-06-28 02:59:52,449 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 276 selfloop transitions, 161 changer transitions 0/439 dead transitions. [2024-06-28 02:59:52,449 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 423 places, 439 transitions, 5462 flow [2024-06-28 02:59:52,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:59:52,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:59:52,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 139 transitions. [2024-06-28 02:59:52,450 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39488636363636365 [2024-06-28 02:59:52,450 INFO L175 Difference]: Start difference. First operand has 413 places, 417 transitions, 4522 flow. Second operand 11 states and 139 transitions. [2024-06-28 02:59:52,451 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 423 places, 439 transitions, 5462 flow [2024-06-28 02:59:53,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 409 places, 439 transitions, 5352 flow, removed 5 selfloop flow, removed 14 redundant places. [2024-06-28 02:59:53,054 INFO L231 Difference]: Finished difference. Result has 410 places, 418 transitions, 4751 flow [2024-06-28 02:59:53,054 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4412, PETRI_DIFFERENCE_MINUEND_PLACES=399, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=417, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=160, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4751, PETRI_PLACES=410, PETRI_TRANSITIONS=418} [2024-06-28 02:59:53,054 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 379 predicate places. [2024-06-28 02:59:53,054 INFO L495 AbstractCegarLoop]: Abstraction has has 410 places, 418 transitions, 4751 flow [2024-06-28 02:59:53,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:53,055 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:59:53,055 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:59:53,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-28 02:59:53,055 INFO L420 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:59:53,055 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:59:53,055 INFO L85 PathProgramCache]: Analyzing trace with hash 1406567282, now seen corresponding path program 4 times [2024-06-28 02:59:53,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:59:53,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896758816] [2024-06-28 02:59:53,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:59:53,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:59:53,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:59:54,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:59:54,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:59:54,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896758816] [2024-06-28 02:59:54,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896758816] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:59:54,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:59:54,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:59:54,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260573737] [2024-06-28 02:59:54,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:59:54,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:59:54,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:59:54,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:59:54,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:59:54,306 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 02:59:54,307 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 410 places, 418 transitions, 4751 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:54,307 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:59:54,307 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 02:59:54,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:59:54,960 INFO L124 PetriNetUnfolderBase]: 969/1694 cut-off events. [2024-06-28 02:59:54,960 INFO L125 PetriNetUnfolderBase]: For 170798/170798 co-relation queries the response was YES. [2024-06-28 02:59:54,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11432 conditions, 1694 events. 969/1694 cut-off events. For 170798/170798 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 9409 event pairs, 61 based on Foata normal form. 2/1695 useless extension candidates. Maximal degree in co-relation 11257. Up to 879 conditions per place. [2024-06-28 02:59:54,983 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 277 selfloop transitions, 170 changer transitions 0/449 dead transitions. [2024-06-28 02:59:54,983 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 422 places, 449 transitions, 5825 flow [2024-06-28 02:59:54,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 02:59:54,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 02:59:54,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 167 transitions. [2024-06-28 02:59:54,984 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4014423076923077 [2024-06-28 02:59:54,984 INFO L175 Difference]: Start difference. First operand has 410 places, 418 transitions, 4751 flow. Second operand 13 states and 167 transitions. [2024-06-28 02:59:54,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 422 places, 449 transitions, 5825 flow [2024-06-28 02:59:55,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 413 places, 449 transitions, 5484 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-28 02:59:55,649 INFO L231 Difference]: Finished difference. Result has 414 places, 422 transitions, 4853 flow [2024-06-28 02:59:55,649 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4410, PETRI_DIFFERENCE_MINUEND_PLACES=401, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=418, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=166, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4853, PETRI_PLACES=414, PETRI_TRANSITIONS=422} [2024-06-28 02:59:55,649 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 383 predicate places. [2024-06-28 02:59:55,650 INFO L495 AbstractCegarLoop]: Abstraction has has 414 places, 422 transitions, 4853 flow [2024-06-28 02:59:55,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:55,650 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:59:55,650 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:59:55,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-28 02:59:55,650 INFO L420 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:59:55,650 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:59:55,650 INFO L85 PathProgramCache]: Analyzing trace with hash -369241541, now seen corresponding path program 4 times [2024-06-28 02:59:55,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:59:55,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68500051] [2024-06-28 02:59:55,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:59:55,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:59:55,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:59:56,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:59:56,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:59:56,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68500051] [2024-06-28 02:59:56,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68500051] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:59:56,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:59:56,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:59:56,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989021205] [2024-06-28 02:59:56,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:59:56,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:59:56,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:59:56,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:59:56,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:59:56,699 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 02:59:56,699 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 414 places, 422 transitions, 4853 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:56,700 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:59:56,700 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 02:59:56,700 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:59:57,201 INFO L124 PetriNetUnfolderBase]: 973/1702 cut-off events. [2024-06-28 02:59:57,201 INFO L125 PetriNetUnfolderBase]: For 173968/173968 co-relation queries the response was YES. [2024-06-28 02:59:57,219 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11548 conditions, 1702 events. 973/1702 cut-off events. For 173968/173968 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 9495 event pairs, 91 based on Foata normal form. 2/1703 useless extension candidates. Maximal degree in co-relation 11373. Up to 1359 conditions per place. [2024-06-28 02:59:57,224 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 316 selfloop transitions, 124 changer transitions 0/442 dead transitions. [2024-06-28 02:59:57,224 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 425 places, 442 transitions, 5825 flow [2024-06-28 02:59:57,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:59:57,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:59:57,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 144 transitions. [2024-06-28 02:59:57,225 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-28 02:59:57,225 INFO L175 Difference]: Start difference. First operand has 414 places, 422 transitions, 4853 flow. Second operand 12 states and 144 transitions. [2024-06-28 02:59:57,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 425 places, 442 transitions, 5825 flow [2024-06-28 02:59:57,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 415 places, 442 transitions, 5412 flow, removed 39 selfloop flow, removed 10 redundant places. [2024-06-28 02:59:57,976 INFO L231 Difference]: Finished difference. Result has 416 places, 423 transitions, 4732 flow [2024-06-28 02:59:57,976 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4440, PETRI_DIFFERENCE_MINUEND_PLACES=404, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=422, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4732, PETRI_PLACES=416, PETRI_TRANSITIONS=423} [2024-06-28 02:59:57,976 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 385 predicate places. [2024-06-28 02:59:57,976 INFO L495 AbstractCegarLoop]: Abstraction has has 416 places, 423 transitions, 4732 flow [2024-06-28 02:59:57,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:57,977 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:59:57,977 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:59:57,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-28 02:59:57,977 INFO L420 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:59:57,977 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:59:57,977 INFO L85 PathProgramCache]: Analyzing trace with hash -374751791, now seen corresponding path program 5 times [2024-06-28 02:59:57,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:59:57,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295380359] [2024-06-28 02:59:57,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:59:57,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:59:57,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:59:58,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:59:58,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:59:58,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295380359] [2024-06-28 02:59:58,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295380359] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:59:58,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:59:58,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:59:58,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248567956] [2024-06-28 02:59:58,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:59:58,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:59:58,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:59:58,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:59:58,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:59:58,996 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 02:59:58,997 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 416 places, 423 transitions, 4732 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:58,997 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:59:58,997 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 02:59:58,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:59:59,519 INFO L124 PetriNetUnfolderBase]: 984/1723 cut-off events. [2024-06-28 02:59:59,519 INFO L125 PetriNetUnfolderBase]: For 193059/193059 co-relation queries the response was YES. [2024-06-28 02:59:59,538 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11779 conditions, 1723 events. 984/1723 cut-off events. For 193059/193059 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 9634 event pairs, 98 based on Foata normal form. 2/1724 useless extension candidates. Maximal degree in co-relation 11603. Up to 1346 conditions per place. [2024-06-28 02:59:59,543 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 314 selfloop transitions, 130 changer transitions 0/446 dead transitions. [2024-06-28 02:59:59,544 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 427 places, 446 transitions, 6018 flow [2024-06-28 02:59:59,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:59:59,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:59:59,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 148 transitions. [2024-06-28 02:59:59,545 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3854166666666667 [2024-06-28 02:59:59,545 INFO L175 Difference]: Start difference. First operand has 416 places, 423 transitions, 4732 flow. Second operand 12 states and 148 transitions. [2024-06-28 02:59:59,545 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 427 places, 446 transitions, 6018 flow [2024-06-28 03:00:00,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 417 places, 446 transitions, 5724 flow, removed 18 selfloop flow, removed 10 redundant places. [2024-06-28 03:00:00,412 INFO L231 Difference]: Finished difference. Result has 418 places, 425 transitions, 4784 flow [2024-06-28 03:00:00,412 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4438, PETRI_DIFFERENCE_MINUEND_PLACES=406, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=423, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4784, PETRI_PLACES=418, PETRI_TRANSITIONS=425} [2024-06-28 03:00:00,413 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 387 predicate places. [2024-06-28 03:00:00,413 INFO L495 AbstractCegarLoop]: Abstraction has has 418 places, 425 transitions, 4784 flow [2024-06-28 03:00:00,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:00:00,413 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:00:00,413 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:00:00,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-28 03:00:00,414 INFO L420 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:00:00,414 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:00:00,414 INFO L85 PathProgramCache]: Analyzing trace with hash 1401204902, now seen corresponding path program 5 times [2024-06-28 03:00:00,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:00:00,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080073692] [2024-06-28 03:00:00,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:00:00,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:00:00,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:00:01,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:00:01,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:00:01,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080073692] [2024-06-28 03:00:01,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080073692] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:00:01,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:00:01,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:00:01,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246242967] [2024-06-28 03:00:01,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:00:01,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:00:01,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:00:01,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:00:01,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:00:01,676 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 03:00:01,676 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 418 places, 425 transitions, 4784 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:00:01,677 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:00:01,677 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 03:00:01,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:00:02,339 INFO L124 PetriNetUnfolderBase]: 1000/1749 cut-off events. [2024-06-28 03:00:02,339 INFO L125 PetriNetUnfolderBase]: For 215325/215325 co-relation queries the response was YES. [2024-06-28 03:00:02,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12387 conditions, 1749 events. 1000/1749 cut-off events. For 215325/215325 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 9795 event pairs, 66 based on Foata normal form. 2/1750 useless extension candidates. Maximal degree in co-relation 12210. Up to 935 conditions per place. [2024-06-28 03:00:02,363 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 286 selfloop transitions, 169 changer transitions 0/457 dead transitions. [2024-06-28 03:00:02,363 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 430 places, 457 transitions, 6212 flow [2024-06-28 03:00:02,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 03:00:02,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 03:00:02,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 169 transitions. [2024-06-28 03:00:02,364 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-28 03:00:02,364 INFO L175 Difference]: Start difference. First operand has 418 places, 425 transitions, 4784 flow. Second operand 13 states and 169 transitions. [2024-06-28 03:00:02,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 430 places, 457 transitions, 6212 flow [2024-06-28 03:00:03,196 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 421 places, 457 transitions, 5911 flow, removed 26 selfloop flow, removed 9 redundant places. [2024-06-28 03:00:03,201 INFO L231 Difference]: Finished difference. Result has 422 places, 429 transitions, 4998 flow [2024-06-28 03:00:03,201 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4483, PETRI_DIFFERENCE_MINUEND_PLACES=409, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=425, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=167, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4998, PETRI_PLACES=422, PETRI_TRANSITIONS=429} [2024-06-28 03:00:03,202 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 391 predicate places. [2024-06-28 03:00:03,202 INFO L495 AbstractCegarLoop]: Abstraction has has 422 places, 429 transitions, 4998 flow [2024-06-28 03:00:03,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:00:03,202 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:00:03,202 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:00:03,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-28 03:00:03,202 INFO L420 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:00:03,203 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:00:03,203 INFO L85 PathProgramCache]: Analyzing trace with hash 1401060752, now seen corresponding path program 6 times [2024-06-28 03:00:03,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:00:03,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234614502] [2024-06-28 03:00:03,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:00:03,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:00:03,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:00:04,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:00:04,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:00:04,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234614502] [2024-06-28 03:00:04,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234614502] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:00:04,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:00:04,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:00:04,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974962868] [2024-06-28 03:00:04,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:00:04,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:00:04,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:00:04,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:00:04,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:00:04,449 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 03:00:04,450 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 422 places, 429 transitions, 4998 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:00:04,450 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:00:04,450 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 03:00:04,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:00:05,229 INFO L124 PetriNetUnfolderBase]: 1150/2001 cut-off events. [2024-06-28 03:00:05,229 INFO L125 PetriNetUnfolderBase]: For 240139/240139 co-relation queries the response was YES. [2024-06-28 03:00:05,251 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14421 conditions, 2001 events. 1150/2001 cut-off events. For 240139/240139 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 11539 event pairs, 186 based on Foata normal form. 2/2002 useless extension candidates. Maximal degree in co-relation 14243. Up to 1464 conditions per place. [2024-06-28 03:00:05,257 INFO L140 encePairwiseOnDemand]: 18/32 looper letters, 389 selfloop transitions, 133 changer transitions 0/524 dead transitions. [2024-06-28 03:00:05,257 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 436 places, 524 transitions, 7250 flow [2024-06-28 03:00:05,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-06-28 03:00:05,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-06-28 03:00:05,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 182 transitions. [2024-06-28 03:00:05,258 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37916666666666665 [2024-06-28 03:00:05,258 INFO L175 Difference]: Start difference. First operand has 422 places, 429 transitions, 4998 flow. Second operand 15 states and 182 transitions. [2024-06-28 03:00:05,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 436 places, 524 transitions, 7250 flow [2024-06-28 03:00:06,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 426 places, 524 transitions, 6770 flow, removed 98 selfloop flow, removed 10 redundant places. [2024-06-28 03:00:06,386 INFO L231 Difference]: Finished difference. Result has 434 places, 484 transitions, 5769 flow [2024-06-28 03:00:06,386 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4661, PETRI_DIFFERENCE_MINUEND_PLACES=412, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=429, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=5769, PETRI_PLACES=434, PETRI_TRANSITIONS=484} [2024-06-28 03:00:06,386 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 403 predicate places. [2024-06-28 03:00:06,386 INFO L495 AbstractCegarLoop]: Abstraction has has 434 places, 484 transitions, 5769 flow [2024-06-28 03:00:06,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:00:06,387 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:00:06,387 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:00:06,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-28 03:00:06,387 INFO L420 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:00:06,388 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:00:06,388 INFO L85 PathProgramCache]: Analyzing trace with hash -374748071, now seen corresponding path program 6 times [2024-06-28 03:00:06,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:00:06,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404245512] [2024-06-28 03:00:06,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:00:06,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:00:06,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:00:07,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:00:07,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:00:07,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404245512] [2024-06-28 03:00:07,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404245512] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:00:07,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:00:07,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:00:07,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086206605] [2024-06-28 03:00:07,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:00:07,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:00:07,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:00:07,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:00:07,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:00:07,555 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 03:00:07,555 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 434 places, 484 transitions, 5769 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:00:07,555 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:00:07,555 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 03:00:07,555 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:00:08,234 INFO L124 PetriNetUnfolderBase]: 1154/2009 cut-off events. [2024-06-28 03:00:08,235 INFO L125 PetriNetUnfolderBase]: For 240670/240670 co-relation queries the response was YES. [2024-06-28 03:00:08,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14694 conditions, 2009 events. 1154/2009 cut-off events. For 240670/240670 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 11559 event pairs, 108 based on Foata normal form. 2/2010 useless extension candidates. Maximal degree in co-relation 14508. Up to 1616 conditions per place. [2024-06-28 03:00:08,261 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 350 selfloop transitions, 152 changer transitions 0/504 dead transitions. [2024-06-28 03:00:08,261 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 445 places, 504 transitions, 6857 flow [2024-06-28 03:00:08,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:00:08,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:00:08,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 146 transitions. [2024-06-28 03:00:08,262 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3802083333333333 [2024-06-28 03:00:08,263 INFO L175 Difference]: Start difference. First operand has 434 places, 484 transitions, 5769 flow. Second operand 12 states and 146 transitions. [2024-06-28 03:00:08,263 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 445 places, 504 transitions, 6857 flow [2024-06-28 03:00:09,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 439 places, 504 transitions, 6631 flow, removed 40 selfloop flow, removed 6 redundant places. [2024-06-28 03:00:09,398 INFO L231 Difference]: Finished difference. Result has 440 places, 485 transitions, 5884 flow [2024-06-28 03:00:09,398 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5543, PETRI_DIFFERENCE_MINUEND_PLACES=428, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=484, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=151, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=332, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5884, PETRI_PLACES=440, PETRI_TRANSITIONS=485} [2024-06-28 03:00:09,398 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 409 predicate places. [2024-06-28 03:00:09,398 INFO L495 AbstractCegarLoop]: Abstraction has has 440 places, 485 transitions, 5884 flow [2024-06-28 03:00:09,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:00:09,399 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:00:09,399 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:00:09,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-28 03:00:09,399 INFO L420 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:00:09,399 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:00:09,399 INFO L85 PathProgramCache]: Analyzing trace with hash 2053591414, now seen corresponding path program 7 times [2024-06-28 03:00:09,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:00:09,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172671033] [2024-06-28 03:00:09,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:00:09,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:00:09,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:00:10,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:00:10,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:00:10,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172671033] [2024-06-28 03:00:10,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172671033] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:00:10,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:00:10,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:00:10,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670271452] [2024-06-28 03:00:10,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:00:10,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:00:10,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:00:10,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:00:10,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:00:10,574 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 03:00:10,574 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 440 places, 485 transitions, 5884 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:00:10,574 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:00:10,574 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 03:00:10,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:00:11,251 INFO L124 PetriNetUnfolderBase]: 1146/1997 cut-off events. [2024-06-28 03:00:11,251 INFO L125 PetriNetUnfolderBase]: For 225022/225022 co-relation queries the response was YES. [2024-06-28 03:00:11,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14016 conditions, 1997 events. 1146/1997 cut-off events. For 225022/225022 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 11494 event pairs, 70 based on Foata normal form. 4/2000 useless extension candidates. Maximal degree in co-relation 13829. Up to 1102 conditions per place. [2024-06-28 03:00:11,280 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 303 selfloop transitions, 205 changer transitions 0/510 dead transitions. [2024-06-28 03:00:11,280 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 451 places, 510 transitions, 6980 flow [2024-06-28 03:00:11,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:00:11,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:00:11,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 157 transitions. [2024-06-28 03:00:11,281 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4088541666666667 [2024-06-28 03:00:11,281 INFO L175 Difference]: Start difference. First operand has 440 places, 485 transitions, 5884 flow. Second operand 12 states and 157 transitions. [2024-06-28 03:00:11,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 451 places, 510 transitions, 6980 flow [2024-06-28 03:00:12,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 441 places, 510 transitions, 6529 flow, removed 75 selfloop flow, removed 10 redundant places. [2024-06-28 03:00:12,217 INFO L231 Difference]: Finished difference. Result has 442 places, 485 transitions, 5851 flow [2024-06-28 03:00:12,217 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5433, PETRI_DIFFERENCE_MINUEND_PLACES=430, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=485, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=205, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=280, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5851, PETRI_PLACES=442, PETRI_TRANSITIONS=485} [2024-06-28 03:00:12,217 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 411 predicate places. [2024-06-28 03:00:12,217 INFO L495 AbstractCegarLoop]: Abstraction has has 442 places, 485 transitions, 5851 flow [2024-06-28 03:00:12,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:00:12,218 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:00:12,218 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:00:12,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-28 03:00:12,218 INFO L420 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:00:12,218 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:00:12,218 INFO L85 PathProgramCache]: Analyzing trace with hash 1401204747, now seen corresponding path program 7 times [2024-06-28 03:00:12,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:00:12,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753251190] [2024-06-28 03:00:12,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:00:12,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:00:12,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:00:13,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:00:13,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:00:13,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753251190] [2024-06-28 03:00:13,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753251190] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:00:13,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:00:13,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:00:13,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984923697] [2024-06-28 03:00:13,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:00:13,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:00:13,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:00:13,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:00:13,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:00:13,308 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 03:00:13,308 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 442 places, 485 transitions, 5851 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:00:13,308 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:00:13,308 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 03:00:13,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:00:13,958 INFO L124 PetriNetUnfolderBase]: 1163/2036 cut-off events. [2024-06-28 03:00:13,959 INFO L125 PetriNetUnfolderBase]: For 298330/298330 co-relation queries the response was YES. [2024-06-28 03:00:13,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13963 conditions, 2036 events. 1163/2036 cut-off events. For 298330/298330 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 11746 event pairs, 69 based on Foata normal form. 14/2049 useless extension candidates. Maximal degree in co-relation 13775. Up to 1067 conditions per place. [2024-06-28 03:00:13,989 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 297 selfloop transitions, 200 changer transitions 17/516 dead transitions. [2024-06-28 03:00:13,989 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 453 places, 516 transitions, 7071 flow [2024-06-28 03:00:13,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:00:13,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:00:13,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 164 transitions. [2024-06-28 03:00:13,990 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4270833333333333 [2024-06-28 03:00:13,990 INFO L175 Difference]: Start difference. First operand has 442 places, 485 transitions, 5851 flow. Second operand 12 states and 164 transitions. [2024-06-28 03:00:13,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 453 places, 516 transitions, 7071 flow [2024-06-28 03:00:14,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 442 places, 516 transitions, 6627 flow, removed 14 selfloop flow, removed 11 redundant places. [2024-06-28 03:00:14,863 INFO L231 Difference]: Finished difference. Result has 443 places, 475 transitions, 5728 flow [2024-06-28 03:00:14,863 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5407, PETRI_DIFFERENCE_MINUEND_PLACES=431, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=485, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=200, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=285, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5728, PETRI_PLACES=443, PETRI_TRANSITIONS=475} [2024-06-28 03:00:14,863 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 412 predicate places. [2024-06-28 03:00:14,863 INFO L495 AbstractCegarLoop]: Abstraction has has 443 places, 475 transitions, 5728 flow [2024-06-28 03:00:14,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:00:14,864 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:00:14,864 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:00:14,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-28 03:00:14,864 INFO L420 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:00:14,864 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:00:14,864 INFO L85 PathProgramCache]: Analyzing trace with hash -2053916691, now seen corresponding path program 8 times [2024-06-28 03:00:14,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:00:14,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151402209] [2024-06-28 03:00:14,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:00:14,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:00:14,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:00:15,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:00:15,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:00:15,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151402209] [2024-06-28 03:00:15,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151402209] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:00:15,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:00:15,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:00:15,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882702611] [2024-06-28 03:00:15,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:00:15,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:00:15,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:00:15,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:00:15,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:00:15,816 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 03:00:15,817 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 443 places, 475 transitions, 5728 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:00:15,817 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:00:15,817 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 03:00:15,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:00:16,422 INFO L124 PetriNetUnfolderBase]: 1145/2010 cut-off events. [2024-06-28 03:00:16,422 INFO L125 PetriNetUnfolderBase]: For 315832/315832 co-relation queries the response was YES. [2024-06-28 03:00:16,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13958 conditions, 2010 events. 1145/2010 cut-off events. For 315832/315832 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 11606 event pairs, 79 based on Foata normal form. 16/2025 useless extension candidates. Maximal degree in co-relation 13780. Up to 1066 conditions per place. [2024-06-28 03:00:16,451 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 318 selfloop transitions, 173 changer transitions 14/507 dead transitions. [2024-06-28 03:00:16,451 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 451 places, 507 transitions, 7056 flow [2024-06-28 03:00:16,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:00:16,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:00:16,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 163 transitions. [2024-06-28 03:00:16,452 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4244791666666667 [2024-06-28 03:00:16,452 INFO L175 Difference]: Start difference. First operand has 443 places, 475 transitions, 5728 flow. Second operand 12 states and 163 transitions. [2024-06-28 03:00:16,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 451 places, 507 transitions, 7056 flow [2024-06-28 03:00:17,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 439 places, 507 transitions, 6641 flow, removed 3 selfloop flow, removed 12 redundant places. [2024-06-28 03:00:17,309 INFO L231 Difference]: Finished difference. Result has 441 places, 471 transitions, 5671 flow [2024-06-28 03:00:17,309 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5313, PETRI_DIFFERENCE_MINUEND_PLACES=428, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=475, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=172, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=302, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5671, PETRI_PLACES=441, PETRI_TRANSITIONS=471} [2024-06-28 03:00:17,314 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 410 predicate places. [2024-06-28 03:00:17,314 INFO L495 AbstractCegarLoop]: Abstraction has has 441 places, 471 transitions, 5671 flow [2024-06-28 03:00:17,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:00:17,315 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:00:17,315 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:00:17,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-28 03:00:17,315 INFO L420 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:00:17,320 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:00:17,320 INFO L85 PathProgramCache]: Analyzing trace with hash -2053916536, now seen corresponding path program 8 times [2024-06-28 03:00:17,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:00:17,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348009809] [2024-06-28 03:00:17,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:00:17,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:00:17,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:00:18,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:00:18,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:00:18,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348009809] [2024-06-28 03:00:18,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348009809] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:00:18,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:00:18,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:00:18,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557246975] [2024-06-28 03:00:18,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:00:18,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:00:18,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:00:18,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:00:18,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:00:18,409 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 03:00:18,409 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 441 places, 471 transitions, 5671 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:00:18,409 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:00:18,409 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 03:00:18,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:00:19,028 INFO L124 PetriNetUnfolderBase]: 1109/1942 cut-off events. [2024-06-28 03:00:19,028 INFO L125 PetriNetUnfolderBase]: For 197088/197088 co-relation queries the response was YES. [2024-06-28 03:00:19,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13511 conditions, 1942 events. 1109/1942 cut-off events. For 197088/197088 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 11231 event pairs, 79 based on Foata normal form. 2/1943 useless extension candidates. Maximal degree in co-relation 13332. Up to 1076 conditions per place. [2024-06-28 03:00:19,055 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 319 selfloop transitions, 174 changer transitions 0/495 dead transitions. [2024-06-28 03:00:19,056 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 452 places, 495 transitions, 6823 flow [2024-06-28 03:00:19,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:00:19,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:00:19,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 153 transitions. [2024-06-28 03:00:19,057 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3984375 [2024-06-28 03:00:19,057 INFO L175 Difference]: Start difference. First operand has 441 places, 471 transitions, 5671 flow. Second operand 12 states and 153 transitions. [2024-06-28 03:00:19,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 452 places, 495 transitions, 6823 flow [2024-06-28 03:00:19,830 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 440 places, 495 transitions, 6432 flow, removed 20 selfloop flow, removed 12 redundant places. [2024-06-28 03:00:19,835 INFO L231 Difference]: Finished difference. Result has 441 places, 473 transitions, 5733 flow [2024-06-28 03:00:19,835 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5280, PETRI_DIFFERENCE_MINUEND_PLACES=429, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=471, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=172, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5733, PETRI_PLACES=441, PETRI_TRANSITIONS=473} [2024-06-28 03:00:19,836 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 410 predicate places. [2024-06-28 03:00:19,836 INFO L495 AbstractCegarLoop]: Abstraction has has 441 places, 473 transitions, 5733 flow [2024-06-28 03:00:19,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:00:19,836 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:00:19,836 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:00:19,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-28 03:00:19,836 INFO L420 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:00:19,837 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:00:19,837 INFO L85 PathProgramCache]: Analyzing trace with hash -2048346766, now seen corresponding path program 9 times [2024-06-28 03:00:19,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:00:19,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122147507] [2024-06-28 03:00:19,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:00:19,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:00:19,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:00:20,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:00:20,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:00:20,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122147507] [2024-06-28 03:00:20,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122147507] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:00:20,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:00:20,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:00:20,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015744371] [2024-06-28 03:00:20,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:00:20,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:00:20,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:00:20,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:00:20,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:00:20,931 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 03:00:20,932 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 441 places, 473 transitions, 5733 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:00:20,932 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:00:20,932 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 03:00:20,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:00:21,624 INFO L124 PetriNetUnfolderBase]: 1127/1972 cut-off events. [2024-06-28 03:00:21,624 INFO L125 PetriNetUnfolderBase]: For 198361/198361 co-relation queries the response was YES. [2024-06-28 03:00:21,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13744 conditions, 1972 events. 1127/1972 cut-off events. For 198361/198361 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 11438 event pairs, 79 based on Foata normal form. 2/1973 useless extension candidates. Maximal degree in co-relation 13565. Up to 1097 conditions per place. [2024-06-28 03:00:21,651 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 331 selfloop transitions, 169 changer transitions 0/502 dead transitions. [2024-06-28 03:00:21,652 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 452 places, 502 transitions, 6951 flow [2024-06-28 03:00:21,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:00:21,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:00:21,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 156 transitions. [2024-06-28 03:00:21,653 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-28 03:00:21,653 INFO L175 Difference]: Start difference. First operand has 441 places, 473 transitions, 5733 flow. Second operand 12 states and 156 transitions. [2024-06-28 03:00:21,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 452 places, 502 transitions, 6951 flow [2024-06-28 03:00:22,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 442 places, 502 transitions, 6506 flow, removed 46 selfloop flow, removed 10 redundant places. [2024-06-28 03:00:22,521 INFO L231 Difference]: Finished difference. Result has 443 places, 479 transitions, 5780 flow [2024-06-28 03:00:22,522 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5296, PETRI_DIFFERENCE_MINUEND_PLACES=431, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=473, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=163, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=308, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5780, PETRI_PLACES=443, PETRI_TRANSITIONS=479} [2024-06-28 03:00:22,522 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 412 predicate places. [2024-06-28 03:00:22,522 INFO L495 AbstractCegarLoop]: Abstraction has has 443 places, 479 transitions, 5780 flow [2024-06-28 03:00:22,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:00:22,522 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:00:22,523 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:00:22,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-28 03:00:22,536 INFO L420 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:00:22,545 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:00:22,545 INFO L85 PathProgramCache]: Analyzing trace with hash 892960032, now seen corresponding path program 2 times [2024-06-28 03:00:22,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:00:22,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892674886] [2024-06-28 03:00:22,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:00:22,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:00:22,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:00:23,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:00:23,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:00:23,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892674886] [2024-06-28 03:00:23,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892674886] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:00:23,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:00:23,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:00:23,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483996184] [2024-06-28 03:00:23,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:00:23,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:00:23,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:00:23,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:00:23,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:00:23,695 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 03:00:23,695 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 443 places, 479 transitions, 5780 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:00:23,695 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:00:23,695 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 03:00:23,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:00:24,274 INFO L124 PetriNetUnfolderBase]: 1131/1980 cut-off events. [2024-06-28 03:00:24,274 INFO L125 PetriNetUnfolderBase]: For 199748/199748 co-relation queries the response was YES. [2024-06-28 03:00:24,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13660 conditions, 1980 events. 1131/1980 cut-off events. For 199748/199748 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 11524 event pairs, 79 based on Foata normal form. 2/1981 useless extension candidates. Maximal degree in co-relation 13480. Up to 1453 conditions per place. [2024-06-28 03:00:24,300 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 364 selfloop transitions, 134 changer transitions 0/500 dead transitions. [2024-06-28 03:00:24,300 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 453 places, 500 transitions, 6842 flow [2024-06-28 03:00:24,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:00:24,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:00:24,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 140 transitions. [2024-06-28 03:00:24,301 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3977272727272727 [2024-06-28 03:00:24,301 INFO L175 Difference]: Start difference. First operand has 443 places, 479 transitions, 5780 flow. Second operand 11 states and 140 transitions. [2024-06-28 03:00:24,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 453 places, 500 transitions, 6842 flow [2024-06-28 03:00:25,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 445 places, 500 transitions, 6419 flow, removed 55 selfloop flow, removed 8 redundant places. [2024-06-28 03:00:25,176 INFO L231 Difference]: Finished difference. Result has 446 places, 480 transitions, 5643 flow [2024-06-28 03:00:25,177 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5357, PETRI_DIFFERENCE_MINUEND_PLACES=435, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=479, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=133, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=345, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5643, PETRI_PLACES=446, PETRI_TRANSITIONS=480} [2024-06-28 03:00:25,177 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 415 predicate places. [2024-06-28 03:00:25,177 INFO L495 AbstractCegarLoop]: Abstraction has has 446 places, 480 transitions, 5643 flow [2024-06-28 03:00:25,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:00:25,177 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:00:25,177 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:00:25,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-28 03:00:25,178 INFO L420 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:00:25,178 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:00:25,178 INFO L85 PathProgramCache]: Analyzing trace with hash 1094308752, now seen corresponding path program 3 times [2024-06-28 03:00:25,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:00:25,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149604549] [2024-06-28 03:00:25,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:00:25,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:00:25,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:00:26,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:00:26,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:00:26,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149604549] [2024-06-28 03:00:26,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149604549] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:00:26,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:00:26,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:00:26,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558559674] [2024-06-28 03:00:26,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:00:26,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:00:26,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:00:26,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:00:26,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:00:26,586 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 03:00:26,586 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 446 places, 480 transitions, 5643 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:00:26,586 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:00:26,586 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 03:00:26,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:00:27,234 INFO L124 PetriNetUnfolderBase]: 1153/2018 cut-off events. [2024-06-28 03:00:27,234 INFO L125 PetriNetUnfolderBase]: For 200863/200863 co-relation queries the response was YES. [2024-06-28 03:00:27,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13653 conditions, 2018 events. 1153/2018 cut-off events. For 200863/200863 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 11793 event pairs, 79 based on Foata normal form. 2/2019 useless extension candidates. Maximal degree in co-relation 13472. Up to 1479 conditions per place. [2024-06-28 03:00:27,265 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 355 selfloop transitions, 149 changer transitions 0/506 dead transitions. [2024-06-28 03:00:27,265 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 456 places, 506 transitions, 6791 flow [2024-06-28 03:00:27,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:00:27,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:00:27,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-28 03:00:27,266 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38920454545454547 [2024-06-28 03:00:27,266 INFO L175 Difference]: Start difference. First operand has 446 places, 480 transitions, 5643 flow. Second operand 11 states and 137 transitions. [2024-06-28 03:00:27,266 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 456 places, 506 transitions, 6791 flow [2024-06-28 03:00:28,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 447 places, 506 transitions, 6503 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-28 03:00:28,198 INFO L231 Difference]: Finished difference. Result has 448 places, 487 transitions, 5749 flow [2024-06-28 03:00:28,198 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5367, PETRI_DIFFERENCE_MINUEND_PLACES=437, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=480, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=142, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=337, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5749, PETRI_PLACES=448, PETRI_TRANSITIONS=487} [2024-06-28 03:00:28,198 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 417 predicate places. [2024-06-28 03:00:28,198 INFO L495 AbstractCegarLoop]: Abstraction has has 448 places, 487 transitions, 5749 flow [2024-06-28 03:00:28,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:00:28,199 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:00:28,199 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:00:28,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-06-28 03:00:28,199 INFO L420 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:00:28,199 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:00:28,199 INFO L85 PathProgramCache]: Analyzing trace with hash -2054060686, now seen corresponding path program 10 times [2024-06-28 03:00:28,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:00:28,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417908362] [2024-06-28 03:00:28,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:00:28,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:00:28,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:00:29,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:00:29,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:00:29,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417908362] [2024-06-28 03:00:29,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417908362] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:00:29,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:00:29,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:00:29,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009635599] [2024-06-28 03:00:29,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:00:29,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:00:29,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:00:29,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:00:29,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:00:29,525 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 03:00:29,525 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 448 places, 487 transitions, 5749 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:00:29,526 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:00:29,526 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 03:00:29,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:00:30,237 INFO L124 PetriNetUnfolderBase]: 1202/2099 cut-off events. [2024-06-28 03:00:30,237 INFO L125 PetriNetUnfolderBase]: For 227105/227105 co-relation queries the response was YES. [2024-06-28 03:00:30,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14622 conditions, 2099 events. 1202/2099 cut-off events. For 227105/227105 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 12295 event pairs, 210 based on Foata normal form. 2/2100 useless extension candidates. Maximal degree in co-relation 14440. Up to 1557 conditions per place. [2024-06-28 03:00:30,268 INFO L140 encePairwiseOnDemand]: 18/32 looper letters, 419 selfloop transitions, 120 changer transitions 0/541 dead transitions. [2024-06-28 03:00:30,268 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 461 places, 541 transitions, 7575 flow [2024-06-28 03:00:30,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-28 03:00:30,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-28 03:00:30,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 169 transitions. [2024-06-28 03:00:30,269 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37723214285714285 [2024-06-28 03:00:30,269 INFO L175 Difference]: Start difference. First operand has 448 places, 487 transitions, 5749 flow. Second operand 14 states and 169 transitions. [2024-06-28 03:00:30,269 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 461 places, 541 transitions, 7575 flow [2024-06-28 03:00:31,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 455 places, 541 transitions, 7334 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-06-28 03:00:31,196 INFO L231 Difference]: Finished difference. Result has 459 places, 506 transitions, 6129 flow [2024-06-28 03:00:31,197 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5510, PETRI_DIFFERENCE_MINUEND_PLACES=442, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=487, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=369, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=6129, PETRI_PLACES=459, PETRI_TRANSITIONS=506} [2024-06-28 03:00:31,197 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 428 predicate places. [2024-06-28 03:00:31,197 INFO L495 AbstractCegarLoop]: Abstraction has has 459 places, 506 transitions, 6129 flow [2024-06-28 03:00:31,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:00:31,197 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:00:31,197 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:00:31,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-06-28 03:00:31,198 INFO L420 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:00:31,198 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:00:31,198 INFO L85 PathProgramCache]: Analyzing trace with hash -2048554156, now seen corresponding path program 11 times [2024-06-28 03:00:31,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:00:31,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063567608] [2024-06-28 03:00:31,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:00:31,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:00:31,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:00:32,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:00:32,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:00:32,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063567608] [2024-06-28 03:00:32,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063567608] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:00:32,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:00:32,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:00:32,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355977468] [2024-06-28 03:00:32,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:00:32,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:00:32,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:00:32,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:00:32,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:00:32,363 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 03:00:32,363 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 459 places, 506 transitions, 6129 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:00:32,363 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:00:32,363 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 03:00:32,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:00:33,108 INFO L124 PetriNetUnfolderBase]: 1234/2151 cut-off events. [2024-06-28 03:00:33,109 INFO L125 PetriNetUnfolderBase]: For 298672/298672 co-relation queries the response was YES. [2024-06-28 03:00:33,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16231 conditions, 2151 events. 1234/2151 cut-off events. For 298672/298672 co-relation queries the response was YES. Maximal size of possible extension queue 218. Compared 12639 event pairs, 78 based on Foata normal form. 4/2154 useless extension candidates. Maximal degree in co-relation 16045. Up to 1208 conditions per place. [2024-06-28 03:00:33,140 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 353 selfloop transitions, 186 changer transitions 0/541 dead transitions. [2024-06-28 03:00:33,140 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 471 places, 541 transitions, 8011 flow [2024-06-28 03:00:33,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 03:00:33,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 03:00:33,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 170 transitions. [2024-06-28 03:00:33,141 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40865384615384615 [2024-06-28 03:00:33,141 INFO L175 Difference]: Start difference. First operand has 459 places, 506 transitions, 6129 flow. Second operand 13 states and 170 transitions. [2024-06-28 03:00:33,141 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 471 places, 541 transitions, 8011 flow [2024-06-28 03:00:34,291 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 467 places, 541 transitions, 7836 flow, removed 75 selfloop flow, removed 4 redundant places. [2024-06-28 03:00:34,297 INFO L231 Difference]: Finished difference. Result has 468 places, 514 transitions, 6777 flow [2024-06-28 03:00:34,297 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5990, PETRI_DIFFERENCE_MINUEND_PLACES=455, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=506, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=182, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=324, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=6777, PETRI_PLACES=468, PETRI_TRANSITIONS=514} [2024-06-28 03:00:34,304 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 437 predicate places. [2024-06-28 03:00:34,304 INFO L495 AbstractCegarLoop]: Abstraction has has 468 places, 514 transitions, 6777 flow [2024-06-28 03:00:34,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:00:34,305 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:00:34,305 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:00:34,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-06-28 03:00:34,320 INFO L420 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:00:34,320 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:00:34,320 INFO L85 PathProgramCache]: Analyzing trace with hash -1846980810, now seen corresponding path program 4 times [2024-06-28 03:00:34,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:00:34,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224981802] [2024-06-28 03:00:34,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:00:34,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:00:34,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:00:35,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:00:35,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:00:35,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224981802] [2024-06-28 03:00:35,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224981802] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:00:35,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:00:35,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:00:35,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047972013] [2024-06-28 03:00:35,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:00:35,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:00:35,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:00:35,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:00:35,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:00:35,756 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 03:00:35,757 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 468 places, 514 transitions, 6777 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:00:35,757 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:00:35,757 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 03:00:35,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:00:36,365 INFO L124 PetriNetUnfolderBase]: 1245/2172 cut-off events. [2024-06-28 03:00:36,365 INFO L125 PetriNetUnfolderBase]: For 300815/300815 co-relation queries the response was YES. [2024-06-28 03:00:36,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16890 conditions, 2172 events. 1245/2172 cut-off events. For 300815/300815 co-relation queries the response was YES. Maximal size of possible extension queue 220. Compared 12732 event pairs, 76 based on Foata normal form. 2/2173 useless extension candidates. Maximal degree in co-relation 16702. Up to 1555 conditions per place. [2024-06-28 03:00:36,396 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 377 selfloop transitions, 157 changer transitions 0/536 dead transitions. [2024-06-28 03:00:36,397 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 478 places, 536 transitions, 8209 flow [2024-06-28 03:00:36,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:00:36,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:00:36,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 139 transitions. [2024-06-28 03:00:36,398 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39488636363636365 [2024-06-28 03:00:36,398 INFO L175 Difference]: Start difference. First operand has 468 places, 514 transitions, 6777 flow. Second operand 11 states and 139 transitions. [2024-06-28 03:00:36,398 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 478 places, 536 transitions, 8209 flow [2024-06-28 03:00:37,630 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 468 places, 536 transitions, 7767 flow, removed 100 selfloop flow, removed 10 redundant places. [2024-06-28 03:00:37,636 INFO L231 Difference]: Finished difference. Result has 469 places, 516 transitions, 6683 flow [2024-06-28 03:00:37,637 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6335, PETRI_DIFFERENCE_MINUEND_PLACES=458, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=514, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=156, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=358, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6683, PETRI_PLACES=469, PETRI_TRANSITIONS=516} [2024-06-28 03:00:37,637 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 438 predicate places. [2024-06-28 03:00:37,637 INFO L495 AbstractCegarLoop]: Abstraction has has 469 places, 516 transitions, 6683 flow [2024-06-28 03:00:37,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:00:37,637 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:00:37,637 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:00:37,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-06-28 03:00:37,638 INFO L420 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:00:37,653 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:00:37,653 INFO L85 PathProgramCache]: Analyzing trace with hash -1854399420, now seen corresponding path program 5 times [2024-06-28 03:00:37,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:00:37,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198219380] [2024-06-28 03:00:37,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:00:37,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:00:37,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:00:38,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:00:38,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:00:38,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198219380] [2024-06-28 03:00:38,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198219380] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:00:38,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:00:38,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:00:38,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42624029] [2024-06-28 03:00:38,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:00:38,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:00:38,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:00:38,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:00:38,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:00:38,767 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 03:00:38,767 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 469 places, 516 transitions, 6683 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:00:38,767 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:00:38,767 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 03:00:38,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:00:39,324 INFO L124 PetriNetUnfolderBase]: 1242/2167 cut-off events. [2024-06-28 03:00:39,325 INFO L125 PetriNetUnfolderBase]: For 279297/279297 co-relation queries the response was YES. [2024-06-28 03:00:39,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16543 conditions, 2167 events. 1242/2167 cut-off events. For 279297/279297 co-relation queries the response was YES. Maximal size of possible extension queue 220. Compared 12752 event pairs, 92 based on Foata normal form. 2/2168 useless extension candidates. Maximal degree in co-relation 16353. Up to 1628 conditions per place. [2024-06-28 03:00:39,357 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 392 selfloop transitions, 142 changer transitions 0/536 dead transitions. [2024-06-28 03:00:39,357 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 479 places, 536 transitions, 7807 flow [2024-06-28 03:00:39,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:00:39,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:00:39,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 139 transitions. [2024-06-28 03:00:39,358 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39488636363636365 [2024-06-28 03:00:39,358 INFO L175 Difference]: Start difference. First operand has 469 places, 516 transitions, 6683 flow. Second operand 11 states and 139 transitions. [2024-06-28 03:00:39,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 479 places, 536 transitions, 7807 flow [2024-06-28 03:00:40,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 473 places, 536 transitions, 7621 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-28 03:00:40,683 INFO L231 Difference]: Finished difference. Result has 474 places, 516 transitions, 6787 flow [2024-06-28 03:00:40,683 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6497, PETRI_DIFFERENCE_MINUEND_PLACES=463, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=516, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=142, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=374, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6787, PETRI_PLACES=474, PETRI_TRANSITIONS=516} [2024-06-28 03:00:40,683 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 443 predicate places. [2024-06-28 03:00:40,684 INFO L495 AbstractCegarLoop]: Abstraction has has 474 places, 516 transitions, 6787 flow [2024-06-28 03:00:40,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:00:40,684 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:00:40,684 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:00:40,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-06-28 03:00:40,684 INFO L420 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:00:40,684 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:00:40,685 INFO L85 PathProgramCache]: Analyzing trace with hash -1854614746, now seen corresponding path program 12 times [2024-06-28 03:00:40,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:00:40,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973912718] [2024-06-28 03:00:40,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:00:40,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:00:40,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:00:41,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:00:41,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:00:41,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973912718] [2024-06-28 03:00:41,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973912718] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:00:41,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:00:41,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:00:41,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374752754] [2024-06-28 03:00:41,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:00:41,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:00:41,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:00:41,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:00:41,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:00:41,855 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 03:00:41,856 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 474 places, 516 transitions, 6787 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:00:41,856 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:00:41,856 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 03:00:41,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:00:42,584 INFO L124 PetriNetUnfolderBase]: 1256/2191 cut-off events. [2024-06-28 03:00:42,585 INFO L125 PetriNetUnfolderBase]: For 286347/286347 co-relation queries the response was YES. [2024-06-28 03:00:42,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16751 conditions, 2191 events. 1256/2191 cut-off events. For 286347/286347 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 12961 event pairs, 93 based on Foata normal form. 4/2194 useless extension candidates. Maximal degree in co-relation 16559. Up to 1254 conditions per place. [2024-06-28 03:00:42,619 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 351 selfloop transitions, 194 changer transitions 0/547 dead transitions. [2024-06-28 03:00:42,620 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 486 places, 547 transitions, 8120 flow [2024-06-28 03:00:42,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 03:00:42,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 03:00:42,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 165 transitions. [2024-06-28 03:00:42,621 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39663461538461536 [2024-06-28 03:00:42,621 INFO L175 Difference]: Start difference. First operand has 474 places, 516 transitions, 6787 flow. Second operand 13 states and 165 transitions. [2024-06-28 03:00:42,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 486 places, 547 transitions, 8120 flow [2024-06-28 03:00:43,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 476 places, 547 transitions, 7780 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-28 03:00:43,998 INFO L231 Difference]: Finished difference. Result has 477 places, 522 transitions, 7009 flow [2024-06-28 03:00:43,998 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6447, PETRI_DIFFERENCE_MINUEND_PLACES=464, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=516, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=188, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=326, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=7009, PETRI_PLACES=477, PETRI_TRANSITIONS=522} [2024-06-28 03:00:43,999 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 446 predicate places. [2024-06-28 03:00:43,999 INFO L495 AbstractCegarLoop]: Abstraction has has 477 places, 522 transitions, 7009 flow [2024-06-28 03:00:43,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:00:43,999 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:00:43,999 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:00:43,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-06-28 03:00:43,999 INFO L420 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:00:44,000 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:00:44,000 INFO L85 PathProgramCache]: Analyzing trace with hash -1854614901, now seen corresponding path program 9 times [2024-06-28 03:00:44,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:00:44,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224392931] [2024-06-28 03:00:44,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:00:44,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:00:44,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:00:45,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:00:45,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:00:45,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224392931] [2024-06-28 03:00:45,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224392931] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:00:45,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:00:45,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:00:45,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580130226] [2024-06-28 03:00:45,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:00:45,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:00:45,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:00:45,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:00:45,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:00:45,122 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 03:00:45,123 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 477 places, 522 transitions, 7009 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:00:45,123 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:00:45,123 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 03:00:45,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:00:45,852 INFO L124 PetriNetUnfolderBase]: 1280/2243 cut-off events. [2024-06-28 03:00:45,852 INFO L125 PetriNetUnfolderBase]: For 394992/394992 co-relation queries the response was YES. [2024-06-28 03:00:45,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17313 conditions, 2243 events. 1280/2243 cut-off events. For 394992/394992 co-relation queries the response was YES. Maximal size of possible extension queue 224. Compared 13327 event pairs, 91 based on Foata normal form. 14/2256 useless extension candidates. Maximal degree in co-relation 17120. Up to 1246 conditions per place. [2024-06-28 03:00:45,885 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 351 selfloop transitions, 172 changer transitions 26/551 dead transitions. [2024-06-28 03:00:45,886 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 488 places, 551 transitions, 8355 flow [2024-06-28 03:00:45,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:00:45,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:00:45,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 159 transitions. [2024-06-28 03:00:45,886 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4140625 [2024-06-28 03:00:45,886 INFO L175 Difference]: Start difference. First operand has 477 places, 522 transitions, 7009 flow. Second operand 12 states and 159 transitions. [2024-06-28 03:00:45,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 488 places, 551 transitions, 8355 flow [2024-06-28 03:00:47,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 478 places, 551 transitions, 7780 flow, removed 97 selfloop flow, removed 10 redundant places. [2024-06-28 03:00:47,331 INFO L231 Difference]: Finished difference. Result has 479 places, 504 transitions, 6618 flow [2024-06-28 03:00:47,331 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6434, PETRI_DIFFERENCE_MINUEND_PLACES=467, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=522, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=171, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=350, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6618, PETRI_PLACES=479, PETRI_TRANSITIONS=504} [2024-06-28 03:00:47,332 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 448 predicate places. [2024-06-28 03:00:47,332 INFO L495 AbstractCegarLoop]: Abstraction has has 479 places, 504 transitions, 6618 flow [2024-06-28 03:00:47,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:00:47,332 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:00:47,332 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:00:47,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2024-06-28 03:00:47,332 INFO L420 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:00:47,333 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:00:47,348 INFO L85 PathProgramCache]: Analyzing trace with hash -2048554311, now seen corresponding path program 10 times [2024-06-28 03:00:47,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:00:47,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516582680] [2024-06-28 03:00:47,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:00:47,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:00:47,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:00:48,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:00:48,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:00:48,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516582680] [2024-06-28 03:00:48,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516582680] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:00:48,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:00:48,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:00:48,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474760705] [2024-06-28 03:00:48,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:00:48,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:00:48,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:00:48,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:00:48,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:00:48,674 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 03:00:48,674 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 479 places, 504 transitions, 6618 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:00:48,674 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:00:48,674 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 03:00:48,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:00:49,381 INFO L124 PetriNetUnfolderBase]: 1212/2151 cut-off events. [2024-06-28 03:00:49,381 INFO L125 PetriNetUnfolderBase]: For 386488/386488 co-relation queries the response was YES. [2024-06-28 03:00:49,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15789 conditions, 2151 events. 1212/2151 cut-off events. For 386488/386488 co-relation queries the response was YES. Maximal size of possible extension queue 218. Compared 12823 event pairs, 91 based on Foata normal form. 18/2168 useless extension candidates. Maximal degree in co-relation 15595. Up to 1178 conditions per place. [2024-06-28 03:00:49,412 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 346 selfloop transitions, 159 changer transitions 27/534 dead transitions. [2024-06-28 03:00:49,413 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 489 places, 534 transitions, 7936 flow [2024-06-28 03:00:49,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:00:49,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:00:49,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 164 transitions. [2024-06-28 03:00:49,414 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4270833333333333 [2024-06-28 03:00:49,414 INFO L175 Difference]: Start difference. First operand has 479 places, 504 transitions, 6618 flow. Second operand 12 states and 164 transitions. [2024-06-28 03:00:49,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 489 places, 534 transitions, 7936 flow [2024-06-28 03:00:50,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 476 places, 534 transitions, 7345 flow, removed 94 selfloop flow, removed 13 redundant places. [2024-06-28 03:00:50,856 INFO L231 Difference]: Finished difference. Result has 478 places, 485 transitions, 6195 flow [2024-06-28 03:00:50,856 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6027, PETRI_DIFFERENCE_MINUEND_PLACES=465, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=504, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=158, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=345, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6195, PETRI_PLACES=478, PETRI_TRANSITIONS=485} [2024-06-28 03:00:50,856 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 447 predicate places. [2024-06-28 03:00:50,856 INFO L495 AbstractCegarLoop]: Abstraction has has 478 places, 485 transitions, 6195 flow [2024-06-28 03:00:50,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:00:50,857 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:00:50,857 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:00:50,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2024-06-28 03:00:50,857 INFO L420 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:00:50,857 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:00:50,857 INFO L85 PathProgramCache]: Analyzing trace with hash -2054064561, now seen corresponding path program 11 times [2024-06-28 03:00:50,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:00:50,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868799756] [2024-06-28 03:00:50,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:00:50,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:00:50,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:00:51,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:00:51,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:00:51,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868799756] [2024-06-28 03:00:51,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868799756] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:00:51,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:00:51,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:00:51,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423059758] [2024-06-28 03:00:51,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:00:51,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:00:51,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:00:51,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:00:51,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:00:51,861 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 03:00:51,861 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 478 places, 485 transitions, 6195 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:00:51,861 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:00:51,862 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 03:00:51,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:00:52,545 INFO L124 PetriNetUnfolderBase]: 1139/2032 cut-off events. [2024-06-28 03:00:52,546 INFO L125 PetriNetUnfolderBase]: For 251682/251682 co-relation queries the response was YES. [2024-06-28 03:00:52,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15112 conditions, 2032 events. 1139/2032 cut-off events. For 251682/251682 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 12098 event pairs, 112 based on Foata normal form. 2/2033 useless extension candidates. Maximal degree in co-relation 14917. Up to 1590 conditions per place. [2024-06-28 03:00:52,578 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 362 selfloop transitions, 142 changer transitions 0/506 dead transitions. [2024-06-28 03:00:52,578 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 486 places, 506 transitions, 7643 flow [2024-06-28 03:00:52,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:00:52,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:00:52,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 145 transitions. [2024-06-28 03:00:52,580 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3776041666666667 [2024-06-28 03:00:52,580 INFO L175 Difference]: Start difference. First operand has 478 places, 485 transitions, 6195 flow. Second operand 12 states and 145 transitions. [2024-06-28 03:00:52,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 486 places, 506 transitions, 7643 flow [2024-06-28 03:00:53,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 473 places, 506 transitions, 7264 flow, removed 27 selfloop flow, removed 13 redundant places. [2024-06-28 03:00:53,897 INFO L231 Difference]: Finished difference. Result has 474 places, 487 transitions, 6202 flow [2024-06-28 03:00:53,897 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5820, PETRI_DIFFERENCE_MINUEND_PLACES=462, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=485, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=141, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=344, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6202, PETRI_PLACES=474, PETRI_TRANSITIONS=487} [2024-06-28 03:00:53,897 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 443 predicate places. [2024-06-28 03:00:53,898 INFO L495 AbstractCegarLoop]: Abstraction has has 474 places, 487 transitions, 6202 flow [2024-06-28 03:00:53,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:00:53,898 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:00:53,898 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:00:53,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2024-06-28 03:00:53,898 INFO L420 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:00:53,898 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:00:53,898 INFO L85 PathProgramCache]: Analyzing trace with hash -2054060841, now seen corresponding path program 12 times [2024-06-28 03:00:53,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:00:53,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954287448] [2024-06-28 03:00:53,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:00:53,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:00:53,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:00:54,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:00:54,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:00:54,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954287448] [2024-06-28 03:00:54,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954287448] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:00:54,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:00:54,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:00:54,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611813752] [2024-06-28 03:00:54,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:00:54,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:00:54,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:00:54,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:00:54,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:00:55,066 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 03:00:55,067 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 474 places, 487 transitions, 6202 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:00:55,067 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:00:55,067 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 03:00:55,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:00:55,747 INFO L124 PetriNetUnfolderBase]: 1136/2027 cut-off events. [2024-06-28 03:00:55,748 INFO L125 PetriNetUnfolderBase]: For 225781/225781 co-relation queries the response was YES. [2024-06-28 03:00:55,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14576 conditions, 2027 events. 1136/2027 cut-off events. For 225781/225781 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 12074 event pairs, 105 based on Foata normal form. 2/2028 useless extension candidates. Maximal degree in co-relation 14382. Up to 1628 conditions per place. [2024-06-28 03:00:55,779 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 363 selfloop transitions, 139 changer transitions 0/504 dead transitions. [2024-06-28 03:00:55,779 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 485 places, 504 transitions, 7254 flow [2024-06-28 03:00:55,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:00:55,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:00:55,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 143 transitions. [2024-06-28 03:00:55,780 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3723958333333333 [2024-06-28 03:00:55,781 INFO L175 Difference]: Start difference. First operand has 474 places, 487 transitions, 6202 flow. Second operand 12 states and 143 transitions. [2024-06-28 03:00:55,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 485 places, 504 transitions, 7254 flow [2024-06-28 03:00:57,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 477 places, 504 transitions, 6990 flow, removed 41 selfloop flow, removed 8 redundant places. [2024-06-28 03:00:57,032 INFO L231 Difference]: Finished difference. Result has 478 places, 487 transitions, 6221 flow [2024-06-28 03:00:57,033 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5938, PETRI_DIFFERENCE_MINUEND_PLACES=466, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=487, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=139, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=348, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6221, PETRI_PLACES=478, PETRI_TRANSITIONS=487} [2024-06-28 03:00:57,033 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 447 predicate places. [2024-06-28 03:00:57,033 INFO L495 AbstractCegarLoop]: Abstraction has has 478 places, 487 transitions, 6221 flow [2024-06-28 03:00:57,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:00:57,033 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:00:57,033 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:00:57,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2024-06-28 03:00:57,034 INFO L420 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:00:57,034 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:00:57,034 INFO L85 PathProgramCache]: Analyzing trace with hash 18436864, now seen corresponding path program 6 times [2024-06-28 03:00:57,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:00:57,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559749539] [2024-06-28 03:00:57,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:00:57,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:00:57,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:00:58,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:00:58,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:00:58,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559749539] [2024-06-28 03:00:58,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559749539] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:00:58,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:00:58,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:00:58,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581678289] [2024-06-28 03:00:58,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:00:58,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:00:58,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:00:58,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:00:58,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:00:58,139 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 03:00:58,139 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 478 places, 487 transitions, 6221 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:00:58,139 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:00:58,139 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 03:00:58,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:00:58,741 INFO L124 PetriNetUnfolderBase]: 1152/2054 cut-off events. [2024-06-28 03:00:58,741 INFO L125 PetriNetUnfolderBase]: For 226721/226721 co-relation queries the response was YES. [2024-06-28 03:00:58,766 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14801 conditions, 2054 events. 1152/2054 cut-off events. For 226721/226721 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 12281 event pairs, 85 based on Foata normal form. 2/2055 useless extension candidates. Maximal degree in co-relation 14605. Up to 1510 conditions per place. [2024-06-28 03:00:58,771 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 380 selfloop transitions, 128 changer transitions 0/510 dead transitions. [2024-06-28 03:00:58,772 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 488 places, 510 transitions, 7355 flow [2024-06-28 03:00:58,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:00:58,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:00:58,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 139 transitions. [2024-06-28 03:00:58,773 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39488636363636365 [2024-06-28 03:00:58,773 INFO L175 Difference]: Start difference. First operand has 478 places, 487 transitions, 6221 flow. Second operand 11 states and 139 transitions. [2024-06-28 03:00:58,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 488 places, 510 transitions, 7355 flow [2024-06-28 03:00:59,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 477 places, 510 transitions, 7059 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-28 03:00:59,998 INFO L231 Difference]: Finished difference. Result has 478 places, 492 transitions, 6256 flow [2024-06-28 03:00:59,998 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5925, PETRI_DIFFERENCE_MINUEND_PLACES=467, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=487, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=363, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6256, PETRI_PLACES=478, PETRI_TRANSITIONS=492} [2024-06-28 03:00:59,999 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 447 predicate places. [2024-06-28 03:00:59,999 INFO L495 AbstractCegarLoop]: Abstraction has has 478 places, 492 transitions, 6256 flow [2024-06-28 03:00:59,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:00:59,999 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:01:00,000 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:01:00,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2024-06-28 03:01:00,000 INFO L420 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:01:00,000 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:01:00,000 INFO L85 PathProgramCache]: Analyzing trace with hash 18169458, now seen corresponding path program 13 times [2024-06-28 03:01:00,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:01:00,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247923539] [2024-06-28 03:01:00,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:01:00,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:01:00,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:01:01,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:01:01,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:01:01,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247923539] [2024-06-28 03:01:01,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247923539] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:01:01,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:01:01,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:01:01,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549812553] [2024-06-28 03:01:01,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:01:01,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:01:01,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:01:01,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:01:01,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:01:01,614 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 03:01:01,615 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 478 places, 492 transitions, 6256 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:01:01,615 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:01:01,615 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 03:01:01,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:01:02,429 INFO L124 PetriNetUnfolderBase]: 1173/2090 cut-off events. [2024-06-28 03:01:02,430 INFO L125 PetriNetUnfolderBase]: For 231783/231783 co-relation queries the response was YES. [2024-06-28 03:01:02,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15133 conditions, 2090 events. 1173/2090 cut-off events. For 231783/231783 co-relation queries the response was YES. Maximal size of possible extension queue 220. Compared 12539 event pairs, 97 based on Foata normal form. 2/2091 useless extension candidates. Maximal degree in co-relation 14936. Up to 1202 conditions per place. [2024-06-28 03:01:02,461 INFO L140 encePairwiseOnDemand]: 18/32 looper letters, 353 selfloop transitions, 166 changer transitions 0/521 dead transitions. [2024-06-28 03:01:02,461 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 489 places, 521 transitions, 7528 flow [2024-06-28 03:01:02,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:01:02,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:01:02,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 156 transitions. [2024-06-28 03:01:02,462 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-28 03:01:02,462 INFO L175 Difference]: Start difference. First operand has 478 places, 492 transitions, 6256 flow. Second operand 12 states and 156 transitions. [2024-06-28 03:01:02,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 489 places, 521 transitions, 7528 flow [2024-06-28 03:01:03,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 483 places, 521 transitions, 7287 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-06-28 03:01:03,691 INFO L231 Difference]: Finished difference. Result has 485 places, 500 transitions, 6576 flow [2024-06-28 03:01:03,691 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6015, PETRI_DIFFERENCE_MINUEND_PLACES=472, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=492, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=158, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=330, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6576, PETRI_PLACES=485, PETRI_TRANSITIONS=500} [2024-06-28 03:01:03,691 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 454 predicate places. [2024-06-28 03:01:03,691 INFO L495 AbstractCegarLoop]: Abstraction has has 485 places, 500 transitions, 6576 flow [2024-06-28 03:01:03,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:01:03,691 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:01:03,692 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:01:03,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2024-06-28 03:01:03,692 INFO L420 AbstractCegarLoop]: === Iteration 154 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:01:03,692 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:01:03,692 INFO L85 PathProgramCache]: Analyzing trace with hash -182911856, now seen corresponding path program 7 times [2024-06-28 03:01:03,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:01:03,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231158105] [2024-06-28 03:01:03,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:01:03,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:01:03,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:01:04,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:01:04,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:01:04,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231158105] [2024-06-28 03:01:04,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231158105] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:01:04,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:01:04,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:01:04,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094716775] [2024-06-28 03:01:04,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:01:04,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:01:04,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:01:04,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:01:04,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:01:04,703 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 03:01:04,704 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 485 places, 500 transitions, 6576 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:01:04,704 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:01:04,704 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 03:01:04,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:01:05,314 INFO L124 PetriNetUnfolderBase]: 1177/2097 cut-off events. [2024-06-28 03:01:05,314 INFO L125 PetriNetUnfolderBase]: For 236140/236140 co-relation queries the response was YES. [2024-06-28 03:01:05,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15413 conditions, 2097 events. 1177/2097 cut-off events. For 236140/236140 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 12626 event pairs, 81 based on Foata normal form. 2/2098 useless extension candidates. Maximal degree in co-relation 15214. Up to 1553 conditions per place. [2024-06-28 03:01:05,345 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 385 selfloop transitions, 132 changer transitions 0/519 dead transitions. [2024-06-28 03:01:05,345 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 495 places, 519 transitions, 7678 flow [2024-06-28 03:01:05,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:01:05,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:01:05,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2024-06-28 03:01:05,346 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39204545454545453 [2024-06-28 03:01:05,346 INFO L175 Difference]: Start difference. First operand has 485 places, 500 transitions, 6576 flow. Second operand 11 states and 138 transitions. [2024-06-28 03:01:05,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 495 places, 519 transitions, 7678 flow [2024-06-28 03:01:06,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 488 places, 519 transitions, 7310 flow, removed 62 selfloop flow, removed 7 redundant places. [2024-06-28 03:01:06,571 INFO L231 Difference]: Finished difference. Result has 489 places, 501 transitions, 6497 flow [2024-06-28 03:01:06,571 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6208, PETRI_DIFFERENCE_MINUEND_PLACES=478, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=500, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=368, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6497, PETRI_PLACES=489, PETRI_TRANSITIONS=501} [2024-06-28 03:01:06,571 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 458 predicate places. [2024-06-28 03:01:06,571 INFO L495 AbstractCegarLoop]: Abstraction has has 489 places, 501 transitions, 6497 flow [2024-06-28 03:01:06,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:01:06,572 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:01:06,572 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:01:06,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2024-06-28 03:01:06,572 INFO L420 AbstractCegarLoop]: === Iteration 155 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:01:06,572 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:01:06,572 INFO L85 PathProgramCache]: Analyzing trace with hash -1700501488, now seen corresponding path program 8 times [2024-06-28 03:01:06,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:01:06,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772947559] [2024-06-28 03:01:06,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:01:06,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:01:06,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:01:07,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:01:07,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:01:07,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772947559] [2024-06-28 03:01:07,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772947559] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:01:07,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:01:07,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:01:07,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607575937] [2024-06-28 03:01:07,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:01:07,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:01:07,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:01:07,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:01:07,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:01:07,862 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 03:01:07,862 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 489 places, 501 transitions, 6497 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:01:07,862 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:01:07,862 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 03:01:07,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:01:08,513 INFO L124 PetriNetUnfolderBase]: 1205/2145 cut-off events. [2024-06-28 03:01:08,513 INFO L125 PetriNetUnfolderBase]: For 237380/237380 co-relation queries the response was YES. [2024-06-28 03:01:08,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15523 conditions, 2145 events. 1205/2145 cut-off events. For 237380/237380 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 12949 event pairs, 82 based on Foata normal form. 2/2146 useless extension candidates. Maximal degree in co-relation 15323. Up to 1585 conditions per place. [2024-06-28 03:01:08,546 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 386 selfloop transitions, 140 changer transitions 0/528 dead transitions. [2024-06-28 03:01:08,546 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 499 places, 528 transitions, 7747 flow [2024-06-28 03:01:08,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:01:08,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:01:08,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2024-06-28 03:01:08,547 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39204545454545453 [2024-06-28 03:01:08,547 INFO L175 Difference]: Start difference. First operand has 489 places, 501 transitions, 6497 flow. Second operand 11 states and 138 transitions. [2024-06-28 03:01:08,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 499 places, 528 transitions, 7747 flow [2024-06-28 03:01:09,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 490 places, 528 transitions, 7442 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-06-28 03:01:09,837 INFO L231 Difference]: Finished difference. Result has 491 places, 510 transitions, 6627 flow [2024-06-28 03:01:09,837 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6208, PETRI_DIFFERENCE_MINUEND_PLACES=480, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=501, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=369, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6627, PETRI_PLACES=491, PETRI_TRANSITIONS=510} [2024-06-28 03:01:09,837 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 460 predicate places. [2024-06-28 03:01:09,837 INFO L495 AbstractCegarLoop]: Abstraction has has 491 places, 510 transitions, 6627 flow [2024-06-28 03:01:09,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:01:09,837 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:01:09,838 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:01:09,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2024-06-28 03:01:09,838 INFO L420 AbstractCegarLoop]: === Iteration 156 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:01:09,838 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:01:09,838 INFO L85 PathProgramCache]: Analyzing trace with hash 11027554, now seen corresponding path program 9 times [2024-06-28 03:01:09,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:01:09,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48110370] [2024-06-28 03:01:09,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:01:09,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:01:09,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:01:10,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:01:10,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:01:10,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48110370] [2024-06-28 03:01:10,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48110370] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:01:10,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:01:10,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:01:10,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119332983] [2024-06-28 03:01:10,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:01:10,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:01:10,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:01:10,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:01:10,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:01:10,860 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 03:01:10,860 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 491 places, 510 transitions, 6627 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:01:10,860 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:01:10,860 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 03:01:10,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:01:11,434 INFO L124 PetriNetUnfolderBase]: 1209/2153 cut-off events. [2024-06-28 03:01:11,434 INFO L125 PetriNetUnfolderBase]: For 241131/241131 co-relation queries the response was YES. [2024-06-28 03:01:11,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15572 conditions, 2153 events. 1209/2153 cut-off events. For 241131/241131 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 13027 event pairs, 87 based on Foata normal form. 2/2154 useless extension candidates. Maximal degree in co-relation 15371. Up to 1593 conditions per place. [2024-06-28 03:01:11,466 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 394 selfloop transitions, 134 changer transitions 0/530 dead transitions. [2024-06-28 03:01:11,466 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 501 places, 530 transitions, 7759 flow [2024-06-28 03:01:11,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:01:11,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:01:11,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 141 transitions. [2024-06-28 03:01:11,469 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4005681818181818 [2024-06-28 03:01:11,469 INFO L175 Difference]: Start difference. First operand has 491 places, 510 transitions, 6627 flow. Second operand 11 states and 141 transitions. [2024-06-28 03:01:11,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 501 places, 530 transitions, 7759 flow [2024-06-28 03:01:12,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 495 places, 530 transitions, 7490 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-06-28 03:01:12,818 INFO L231 Difference]: Finished difference. Result has 496 places, 511 transitions, 6655 flow [2024-06-28 03:01:12,818 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6358, PETRI_DIFFERENCE_MINUEND_PLACES=485, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=510, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=133, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=376, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6655, PETRI_PLACES=496, PETRI_TRANSITIONS=511} [2024-06-28 03:01:12,818 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 465 predicate places. [2024-06-28 03:01:12,818 INFO L495 AbstractCegarLoop]: Abstraction has has 496 places, 511 transitions, 6655 flow [2024-06-28 03:01:12,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:01:12,819 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:01:12,819 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:01:12,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2024-06-28 03:01:12,819 INFO L420 AbstractCegarLoop]: === Iteration 157 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:01:12,819 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:01:12,819 INFO L85 PathProgramCache]: Analyzing trace with hash -1700492188, now seen corresponding path program 10 times [2024-06-28 03:01:12,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:01:12,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033252619] [2024-06-28 03:01:12,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:01:12,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:01:12,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:01:14,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:01:14,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:01:14,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033252619] [2024-06-28 03:01:14,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033252619] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:01:14,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:01:14,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:01:14,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817432364] [2024-06-28 03:01:14,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:01:14,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:01:14,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:01:14,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:01:14,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:01:14,266 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 03:01:14,266 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 496 places, 511 transitions, 6655 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:01:14,266 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:01:14,266 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 03:01:14,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:01:14,947 INFO L124 PetriNetUnfolderBase]: 1220/2174 cut-off events. [2024-06-28 03:01:14,947 INFO L125 PetriNetUnfolderBase]: For 267239/267239 co-relation queries the response was YES. [2024-06-28 03:01:14,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16019 conditions, 2174 events. 1220/2174 cut-off events. For 267239/267239 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 13180 event pairs, 86 based on Foata normal form. 2/2175 useless extension candidates. Maximal degree in co-relation 15817. Up to 1562 conditions per place. [2024-06-28 03:01:14,980 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 384 selfloop transitions, 146 changer transitions 0/532 dead transitions. [2024-06-28 03:01:14,980 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 506 places, 532 transitions, 8119 flow [2024-06-28 03:01:14,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:01:14,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:01:14,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 140 transitions. [2024-06-28 03:01:14,981 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3977272727272727 [2024-06-28 03:01:14,981 INFO L175 Difference]: Start difference. First operand has 496 places, 511 transitions, 6655 flow. Second operand 11 states and 140 transitions. [2024-06-28 03:01:14,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 506 places, 532 transitions, 8119 flow [2024-06-28 03:01:16,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 497 places, 532 transitions, 7822 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-06-28 03:01:16,463 INFO L231 Difference]: Finished difference. Result has 498 places, 513 transitions, 6704 flow [2024-06-28 03:01:16,463 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6358, PETRI_DIFFERENCE_MINUEND_PLACES=487, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=511, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=145, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=366, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6704, PETRI_PLACES=498, PETRI_TRANSITIONS=513} [2024-06-28 03:01:16,463 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 467 predicate places. [2024-06-28 03:01:16,463 INFO L495 AbstractCegarLoop]: Abstraction has has 498 places, 513 transitions, 6704 flow [2024-06-28 03:01:16,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:01:16,464 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:01:16,464 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:01:16,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2024-06-28 03:01:16,464 INFO L420 AbstractCegarLoop]: === Iteration 158 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:01:16,464 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:01:16,464 INFO L85 PathProgramCache]: Analyzing trace with hash -182919792, now seen corresponding path program 14 times [2024-06-28 03:01:16,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:01:16,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876331206] [2024-06-28 03:01:16,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:01:16,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:01:16,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:01:17,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:01:17,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:01:17,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876331206] [2024-06-28 03:01:17,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876331206] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:01:17,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:01:17,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:01:17,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955455268] [2024-06-28 03:01:17,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:01:17,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:01:17,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:01:17,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:01:17,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:01:17,675 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 03:01:17,675 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 498 places, 513 transitions, 6704 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:01:17,675 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:01:17,675 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 03:01:17,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:01:18,474 INFO L124 PetriNetUnfolderBase]: 1238/2205 cut-off events. [2024-06-28 03:01:18,475 INFO L125 PetriNetUnfolderBase]: For 273145/273145 co-relation queries the response was YES. [2024-06-28 03:01:18,501 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16353 conditions, 2205 events. 1238/2205 cut-off events. For 273145/273145 co-relation queries the response was YES. Maximal size of possible extension queue 235. Compared 13422 event pairs, 92 based on Foata normal form. 2/2206 useless extension candidates. Maximal degree in co-relation 16150. Up to 1310 conditions per place. [2024-06-28 03:01:18,508 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 367 selfloop transitions, 171 changer transitions 0/540 dead transitions. [2024-06-28 03:01:18,508 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 509 places, 540 transitions, 8008 flow [2024-06-28 03:01:18,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:01:18,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:01:18,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 154 transitions. [2024-06-28 03:01:18,509 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4010416666666667 [2024-06-28 03:01:18,509 INFO L175 Difference]: Start difference. First operand has 498 places, 513 transitions, 6704 flow. Second operand 12 states and 154 transitions. [2024-06-28 03:01:18,509 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 509 places, 540 transitions, 8008 flow [2024-06-28 03:01:19,973 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 502 places, 540 transitions, 7804 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-28 03:01:19,979 INFO L231 Difference]: Finished difference. Result has 503 places, 519 transitions, 7012 flow [2024-06-28 03:01:19,979 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6500, PETRI_DIFFERENCE_MINUEND_PLACES=491, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=513, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=165, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=346, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7012, PETRI_PLACES=503, PETRI_TRANSITIONS=519} [2024-06-28 03:01:19,980 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 472 predicate places. [2024-06-28 03:01:19,980 INFO L495 AbstractCegarLoop]: Abstraction has has 503 places, 519 transitions, 7012 flow [2024-06-28 03:01:19,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:01:19,980 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:01:19,980 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:01:19,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2024-06-28 03:01:19,980 INFO L420 AbstractCegarLoop]: === Iteration 159 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:01:19,981 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:01:19,981 INFO L85 PathProgramCache]: Analyzing trace with hash -188489717, now seen corresponding path program 13 times [2024-06-28 03:01:19,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:01:19,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690432436] [2024-06-28 03:01:19,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:01:19,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:01:19,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:01:20,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:01:20,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:01:20,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690432436] [2024-06-28 03:01:20,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690432436] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:01:20,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:01:20,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:01:20,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788796656] [2024-06-28 03:01:20,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:01:20,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:01:20,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:01:20,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:01:20,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:01:21,044 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 03:01:21,044 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 503 places, 519 transitions, 7012 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:01:21,044 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:01:21,044 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 03:01:21,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:01:21,778 INFO L124 PetriNetUnfolderBase]: 1268/2267 cut-off events. [2024-06-28 03:01:21,779 INFO L125 PetriNetUnfolderBase]: For 435954/435954 co-relation queries the response was YES. [2024-06-28 03:01:21,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17330 conditions, 2267 events. 1268/2267 cut-off events. For 435954/435954 co-relation queries the response was YES. Maximal size of possible extension queue 237. Compared 13883 event pairs, 92 based on Foata normal form. 16/2282 useless extension candidates. Maximal degree in co-relation 17125. Up to 1307 conditions per place. [2024-06-28 03:01:21,813 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 353 selfloop transitions, 180 changer transitions 14/549 dead transitions. [2024-06-28 03:01:21,814 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 514 places, 549 transitions, 8482 flow [2024-06-28 03:01:21,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:01:21,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:01:21,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 161 transitions. [2024-06-28 03:01:21,814 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4192708333333333 [2024-06-28 03:01:21,814 INFO L175 Difference]: Start difference. First operand has 503 places, 519 transitions, 7012 flow. Second operand 12 states and 161 transitions. [2024-06-28 03:01:21,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 514 places, 549 transitions, 8482 flow [2024-06-28 03:01:23,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 506 places, 549 transitions, 8054 flow, removed 56 selfloop flow, removed 8 redundant places. [2024-06-28 03:01:23,409 INFO L231 Difference]: Finished difference. Result has 508 places, 515 transitions, 6950 flow [2024-06-28 03:01:23,409 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6584, PETRI_DIFFERENCE_MINUEND_PLACES=495, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=519, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=179, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=339, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6950, PETRI_PLACES=508, PETRI_TRANSITIONS=515} [2024-06-28 03:01:23,410 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 477 predicate places. [2024-06-28 03:01:23,410 INFO L495 AbstractCegarLoop]: Abstraction has has 508 places, 515 transitions, 6950 flow [2024-06-28 03:01:23,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:01:23,410 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:01:23,410 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:01:23,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2024-06-28 03:01:23,410 INFO L420 AbstractCegarLoop]: === Iteration 160 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:01:23,411 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:01:23,411 INFO L85 PathProgramCache]: Analyzing trace with hash 11019618, now seen corresponding path program 15 times [2024-06-28 03:01:23,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:01:23,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125591077] [2024-06-28 03:01:23,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:01:23,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:01:23,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:01:24,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:01:24,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:01:24,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125591077] [2024-06-28 03:01:24,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125591077] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:01:24,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:01:24,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:01:24,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722187763] [2024-06-28 03:01:24,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:01:24,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:01:24,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:01:24,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:01:24,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:01:24,504 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 03:01:24,505 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 508 places, 515 transitions, 6950 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:01:24,505 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:01:24,505 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 03:01:24,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:01:25,235 INFO L124 PetriNetUnfolderBase]: 1244/2219 cut-off events. [2024-06-28 03:01:25,236 INFO L125 PetriNetUnfolderBase]: For 285009/285009 co-relation queries the response was YES. [2024-06-28 03:01:25,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16927 conditions, 2219 events. 1244/2219 cut-off events. For 285009/285009 co-relation queries the response was YES. Maximal size of possible extension queue 238. Compared 13587 event pairs, 98 based on Foata normal form. 2/2220 useless extension candidates. Maximal degree in co-relation 16720. Up to 1328 conditions per place. [2024-06-28 03:01:25,272 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 377 selfloop transitions, 164 changer transitions 0/543 dead transitions. [2024-06-28 03:01:25,273 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 519 places, 543 transitions, 8280 flow [2024-06-28 03:01:25,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:01:25,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:01:25,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 158 transitions. [2024-06-28 03:01:25,273 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4114583333333333 [2024-06-28 03:01:25,274 INFO L175 Difference]: Start difference. First operand has 508 places, 515 transitions, 6950 flow. Second operand 12 states and 158 transitions. [2024-06-28 03:01:25,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 519 places, 543 transitions, 8280 flow [2024-06-28 03:01:26,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 507 places, 543 transitions, 7859 flow, removed 24 selfloop flow, removed 12 redundant places. [2024-06-28 03:01:26,751 INFO L231 Difference]: Finished difference. Result has 508 places, 521 transitions, 7043 flow [2024-06-28 03:01:26,752 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6537, PETRI_DIFFERENCE_MINUEND_PLACES=496, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=515, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=158, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=355, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7043, PETRI_PLACES=508, PETRI_TRANSITIONS=521} [2024-06-28 03:01:26,752 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 477 predicate places. [2024-06-28 03:01:26,752 INFO L495 AbstractCegarLoop]: Abstraction has has 508 places, 521 transitions, 7043 flow [2024-06-28 03:01:26,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:01:26,752 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:01:26,752 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:01:26,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2024-06-28 03:01:26,753 INFO L420 AbstractCegarLoop]: === Iteration 161 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:01:26,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:01:26,753 INFO L85 PathProgramCache]: Analyzing trace with hash -1764990860, now seen corresponding path program 16 times [2024-06-28 03:01:26,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:01:26,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268410156] [2024-06-28 03:01:26,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:01:26,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:01:26,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:01:27,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:01:27,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:01:27,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268410156] [2024-06-28 03:01:27,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268410156] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:01:27,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:01:27,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:01:27,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263547035] [2024-06-28 03:01:27,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:01:27,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:01:27,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:01:27,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:01:27,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:01:27,901 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 03:01:27,902 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 508 places, 521 transitions, 7043 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:01:27,902 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:01:27,902 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 03:01:27,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:01:28,673 INFO L124 PetriNetUnfolderBase]: 1250/2229 cut-off events. [2024-06-28 03:01:28,673 INFO L125 PetriNetUnfolderBase]: For 287245/287245 co-relation queries the response was YES. [2024-06-28 03:01:28,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17006 conditions, 2229 events. 1250/2229 cut-off events. For 287245/287245 co-relation queries the response was YES. Maximal size of possible extension queue 238. Compared 13668 event pairs, 98 based on Foata normal form. 2/2230 useless extension candidates. Maximal degree in co-relation 16799. Up to 1338 conditions per place. [2024-06-28 03:01:28,715 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 377 selfloop transitions, 166 changer transitions 0/545 dead transitions. [2024-06-28 03:01:28,715 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 519 places, 545 transitions, 8329 flow [2024-06-28 03:01:28,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:01:28,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:01:28,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 157 transitions. [2024-06-28 03:01:28,716 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4088541666666667 [2024-06-28 03:01:28,716 INFO L175 Difference]: Start difference. First operand has 508 places, 521 transitions, 7043 flow. Second operand 12 states and 157 transitions. [2024-06-28 03:01:28,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 519 places, 545 transitions, 8329 flow [2024-06-28 03:01:30,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 510 places, 545 transitions, 7870 flow, removed 60 selfloop flow, removed 9 redundant places. [2024-06-28 03:01:30,219 INFO L231 Difference]: Finished difference. Result has 511 places, 523 transitions, 7054 flow [2024-06-28 03:01:30,220 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6584, PETRI_DIFFERENCE_MINUEND_PLACES=499, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=521, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=164, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=355, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7054, PETRI_PLACES=511, PETRI_TRANSITIONS=523} [2024-06-28 03:01:30,220 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 480 predicate places. [2024-06-28 03:01:30,220 INFO L495 AbstractCegarLoop]: Abstraction has has 511 places, 523 transitions, 7054 flow [2024-06-28 03:01:30,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:01:30,220 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:01:30,220 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:01:30,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2024-06-28 03:01:30,221 INFO L420 AbstractCegarLoop]: === Iteration 162 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:01:30,221 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:01:30,221 INFO L85 PathProgramCache]: Analyzing trace with hash -1958936005, now seen corresponding path program 14 times [2024-06-28 03:01:30,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:01:30,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110961425] [2024-06-28 03:01:30,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:01:30,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:01:30,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:01:31,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:01:31,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:01:31,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110961425] [2024-06-28 03:01:31,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110961425] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:01:31,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:01:31,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:01:31,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347815670] [2024-06-28 03:01:31,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:01:31,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:01:31,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:01:31,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:01:31,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:01:31,219 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 03:01:31,219 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 511 places, 523 transitions, 7054 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:01:31,219 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:01:31,219 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 03:01:31,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:01:31,866 INFO L124 PetriNetUnfolderBase]: 1254/2237 cut-off events. [2024-06-28 03:01:31,866 INFO L125 PetriNetUnfolderBase]: For 288106/288106 co-relation queries the response was YES. [2024-06-28 03:01:31,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16990 conditions, 2237 events. 1254/2237 cut-off events. For 288106/288106 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 13699 event pairs, 140 based on Foata normal form. 2/2238 useless extension candidates. Maximal degree in co-relation 16782. Up to 1865 conditions per place. [2024-06-28 03:01:31,901 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 423 selfloop transitions, 114 changer transitions 0/539 dead transitions. [2024-06-28 03:01:31,901 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 522 places, 539 transitions, 8220 flow [2024-06-28 03:01:31,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:01:31,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:01:31,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 142 transitions. [2024-06-28 03:01:31,902 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3697916666666667 [2024-06-28 03:01:31,902 INFO L175 Difference]: Start difference. First operand has 511 places, 523 transitions, 7054 flow. Second operand 12 states and 142 transitions. [2024-06-28 03:01:31,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 522 places, 539 transitions, 8220 flow [2024-06-28 03:01:33,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 511 places, 539 transitions, 7742 flow, removed 62 selfloop flow, removed 11 redundant places. [2024-06-28 03:01:33,479 INFO L231 Difference]: Finished difference. Result has 512 places, 524 transitions, 6860 flow [2024-06-28 03:01:33,479 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6576, PETRI_DIFFERENCE_MINUEND_PLACES=500, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=523, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=409, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6860, PETRI_PLACES=512, PETRI_TRANSITIONS=524} [2024-06-28 03:01:33,479 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 481 predicate places. [2024-06-28 03:01:33,479 INFO L495 AbstractCegarLoop]: Abstraction has has 512 places, 524 transitions, 6860 flow [2024-06-28 03:01:33,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:01:33,480 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:01:33,480 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:01:33,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2024-06-28 03:01:33,480 INFO L420 AbstractCegarLoop]: === Iteration 163 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:01:33,480 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:01:33,481 INFO L85 PathProgramCache]: Analyzing trace with hash 469259330, now seen corresponding path program 17 times [2024-06-28 03:01:33,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:01:33,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364756325] [2024-06-28 03:01:33,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:01:33,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:01:33,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:01:34,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:01:34,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:01:34,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364756325] [2024-06-28 03:01:34,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364756325] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:01:34,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:01:34,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:01:34,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581395847] [2024-06-28 03:01:34,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:01:34,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:01:34,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:01:34,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:01:34,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:01:34,538 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 03:01:34,538 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 512 places, 524 transitions, 6860 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:01:34,538 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:01:34,538 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 03:01:34,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:01:35,301 INFO L124 PetriNetUnfolderBase]: 1260/2247 cut-off events. [2024-06-28 03:01:35,302 INFO L125 PetriNetUnfolderBase]: For 291924/291924 co-relation queries the response was YES. [2024-06-28 03:01:35,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16877 conditions, 2247 events. 1260/2247 cut-off events. For 291924/291924 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 13828 event pairs, 90 based on Foata normal form. 2/2248 useless extension candidates. Maximal degree in co-relation 16668. Up to 1356 conditions per place. [2024-06-28 03:01:35,336 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 376 selfloop transitions, 170 changer transitions 0/548 dead transitions. [2024-06-28 03:01:35,336 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 523 places, 548 transitions, 8156 flow [2024-06-28 03:01:35,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:01:35,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:01:35,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 156 transitions. [2024-06-28 03:01:35,337 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-28 03:01:35,337 INFO L175 Difference]: Start difference. First operand has 512 places, 524 transitions, 6860 flow. Second operand 12 states and 156 transitions. [2024-06-28 03:01:35,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 523 places, 548 transitions, 8156 flow [2024-06-28 03:01:36,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 513 places, 548 transitions, 7882 flow, removed 24 selfloop flow, removed 10 redundant places. [2024-06-28 03:01:36,811 INFO L231 Difference]: Finished difference. Result has 514 places, 526 transitions, 7068 flow [2024-06-28 03:01:36,811 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6586, PETRI_DIFFERENCE_MINUEND_PLACES=502, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=524, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=168, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=354, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7068, PETRI_PLACES=514, PETRI_TRANSITIONS=526} [2024-06-28 03:01:36,812 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 483 predicate places. [2024-06-28 03:01:36,812 INFO L495 AbstractCegarLoop]: Abstraction has has 514 places, 526 transitions, 7068 flow [2024-06-28 03:01:36,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:01:36,812 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:01:36,812 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:01:36,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2024-06-28 03:01:36,812 INFO L420 AbstractCegarLoop]: === Iteration 164 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:01:36,813 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:01:36,813 INFO L85 PathProgramCache]: Analyzing trace with hash -1708126279, now seen corresponding path program 15 times [2024-06-28 03:01:36,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:01:36,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670222516] [2024-06-28 03:01:36,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:01:36,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:01:36,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:01:37,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:01:37,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:01:37,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670222516] [2024-06-28 03:01:37,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670222516] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:01:37,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:01:37,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:01:37,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651100647] [2024-06-28 03:01:37,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:01:37,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:01:37,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:01:37,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:01:37,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:01:37,991 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 03:01:37,991 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 514 places, 526 transitions, 7068 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:01:37,991 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:01:37,991 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 03:01:37,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:01:38,838 INFO L124 PetriNetUnfolderBase]: 1284/2299 cut-off events. [2024-06-28 03:01:38,839 INFO L125 PetriNetUnfolderBase]: For 448216/448216 co-relation queries the response was YES. [2024-06-28 03:01:38,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17491 conditions, 2299 events. 1284/2299 cut-off events. For 448216/448216 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 14165 event pairs, 108 based on Foata normal form. 14/2312 useless extension candidates. Maximal degree in co-relation 17281. Up to 1343 conditions per place. [2024-06-28 03:01:38,870 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 360 selfloop transitions, 171 changer transitions 20/553 dead transitions. [2024-06-28 03:01:38,870 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 525 places, 553 transitions, 8442 flow [2024-06-28 03:01:38,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:01:38,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:01:38,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 157 transitions. [2024-06-28 03:01:38,871 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4088541666666667 [2024-06-28 03:01:38,871 INFO L175 Difference]: Start difference. First operand has 514 places, 526 transitions, 7068 flow. Second operand 12 states and 157 transitions. [2024-06-28 03:01:38,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 525 places, 553 transitions, 8442 flow [2024-06-28 03:01:40,354 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 514 places, 553 transitions, 7958 flow, removed 64 selfloop flow, removed 11 redundant places. [2024-06-28 03:01:40,360 INFO L231 Difference]: Finished difference. Result has 515 places, 514 transitions, 6831 flow [2024-06-28 03:01:40,360 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6584, PETRI_DIFFERENCE_MINUEND_PLACES=503, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=526, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=170, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=355, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6831, PETRI_PLACES=515, PETRI_TRANSITIONS=514} [2024-06-28 03:01:40,361 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 484 predicate places. [2024-06-28 03:01:40,361 INFO L495 AbstractCegarLoop]: Abstraction has has 515 places, 514 transitions, 6831 flow [2024-06-28 03:01:40,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:01:40,361 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:01:40,361 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:01:40,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2024-06-28 03:01:40,361 INFO L420 AbstractCegarLoop]: === Iteration 165 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:01:40,362 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:01:40,362 INFO L85 PathProgramCache]: Analyzing trace with hash 18446164, now seen corresponding path program 11 times [2024-06-28 03:01:40,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:01:40,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108076079] [2024-06-28 03:01:40,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:01:40,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:01:40,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:01:41,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:01:41,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:01:41,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108076079] [2024-06-28 03:01:41,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108076079] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:01:41,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:01:41,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:01:41,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544250591] [2024-06-28 03:01:41,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:01:41,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:01:41,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:01:41,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:01:41,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:01:41,797 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 03:01:41,798 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 515 places, 514 transitions, 6831 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:01:41,798 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:01:41,798 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 03:01:41,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:01:42,622 INFO L124 PetriNetUnfolderBase]: 1222/2204 cut-off events. [2024-06-28 03:01:42,623 INFO L125 PetriNetUnfolderBase]: For 296893/296893 co-relation queries the response was YES. [2024-06-28 03:01:42,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16625 conditions, 2204 events. 1222/2204 cut-off events. For 296893/296893 co-relation queries the response was YES. Maximal size of possible extension queue 238. Compared 13665 event pairs, 93 based on Foata normal form. 2/2205 useless extension candidates. Maximal degree in co-relation 16414. Up to 1587 conditions per place. [2024-06-28 03:01:42,658 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 394 selfloop transitions, 137 changer transitions 0/533 dead transitions. [2024-06-28 03:01:42,658 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 525 places, 533 transitions, 7967 flow [2024-06-28 03:01:42,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:01:42,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:01:42,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 140 transitions. [2024-06-28 03:01:42,659 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3977272727272727 [2024-06-28 03:01:42,659 INFO L175 Difference]: Start difference. First operand has 515 places, 514 transitions, 6831 flow. Second operand 11 states and 140 transitions. [2024-06-28 03:01:42,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 525 places, 533 transitions, 7967 flow [2024-06-28 03:01:44,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 512 places, 533 transitions, 7518 flow, removed 25 selfloop flow, removed 13 redundant places. [2024-06-28 03:01:44,154 INFO L231 Difference]: Finished difference. Result has 513 places, 515 transitions, 6688 flow [2024-06-28 03:01:44,154 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6382, PETRI_DIFFERENCE_MINUEND_PLACES=502, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=514, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=136, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=377, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6688, PETRI_PLACES=513, PETRI_TRANSITIONS=515} [2024-06-28 03:01:44,155 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 482 predicate places. [2024-06-28 03:01:44,155 INFO L495 AbstractCegarLoop]: Abstraction has has 513 places, 515 transitions, 6688 flow [2024-06-28 03:01:44,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:01:44,155 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:01:44,155 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:01:44,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2024-06-28 03:01:44,156 INFO L420 AbstractCegarLoop]: === Iteration 166 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:01:44,156 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:01:44,156 INFO L85 PathProgramCache]: Analyzing trace with hash 1076945110, now seen corresponding path program 12 times [2024-06-28 03:01:44,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:01:44,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137671447] [2024-06-28 03:01:44,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:01:44,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:01:44,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:01:45,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:01:45,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:01:45,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137671447] [2024-06-28 03:01:45,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137671447] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:01:45,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:01:45,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:01:45,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18139717] [2024-06-28 03:01:45,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:01:45,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:01:45,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:01:45,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:01:45,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:01:45,137 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 03:01:45,138 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 513 places, 515 transitions, 6688 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:01:45,138 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:01:45,138 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 03:01:45,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:01:45,831 INFO L124 PetriNetUnfolderBase]: 1226/2212 cut-off events. [2024-06-28 03:01:45,832 INFO L125 PetriNetUnfolderBase]: For 299477/299477 co-relation queries the response was YES. [2024-06-28 03:01:45,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16481 conditions, 2212 events. 1226/2212 cut-off events. For 299477/299477 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 13712 event pairs, 96 based on Foata normal form. 2/2213 useless extension candidates. Maximal degree in co-relation 16270. Up to 1652 conditions per place. [2024-06-28 03:01:45,866 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 378 selfloop transitions, 153 changer transitions 0/533 dead transitions. [2024-06-28 03:01:45,866 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 523 places, 533 transitions, 7824 flow [2024-06-28 03:01:45,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:01:45,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:01:45,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-28 03:01:45,867 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3806818181818182 [2024-06-28 03:01:45,867 INFO L175 Difference]: Start difference. First operand has 513 places, 515 transitions, 6688 flow. Second operand 11 states and 134 transitions. [2024-06-28 03:01:45,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 523 places, 533 transitions, 7824 flow [2024-06-28 03:01:47,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 514 places, 533 transitions, 7528 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-28 03:01:47,446 INFO L231 Difference]: Finished difference. Result has 515 places, 516 transitions, 6733 flow [2024-06-28 03:01:47,446 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6392, PETRI_DIFFERENCE_MINUEND_PLACES=504, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=515, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=152, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=362, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6733, PETRI_PLACES=515, PETRI_TRANSITIONS=516} [2024-06-28 03:01:47,446 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 484 predicate places. [2024-06-28 03:01:47,446 INFO L495 AbstractCegarLoop]: Abstraction has has 515 places, 516 transitions, 6733 flow [2024-06-28 03:01:47,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:01:47,447 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:01:47,447 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:01:47,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2024-06-28 03:01:47,447 INFO L420 AbstractCegarLoop]: === Iteration 167 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:01:47,447 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:01:47,447 INFO L85 PathProgramCache]: Analyzing trace with hash 811247830, now seen corresponding path program 13 times [2024-06-28 03:01:47,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:01:47,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818661239] [2024-06-28 03:01:47,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:01:47,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:01:47,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:01:48,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:01:48,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:01:48,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818661239] [2024-06-28 03:01:48,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818661239] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:01:48,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:01:48,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:01:48,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722210396] [2024-06-28 03:01:48,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:01:48,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:01:48,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:01:48,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:01:48,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:01:48,599 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 03:01:48,600 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 515 places, 516 transitions, 6733 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:01:48,600 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:01:48,600 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 03:01:48,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:01:49,301 INFO L124 PetriNetUnfolderBase]: 1223/2207 cut-off events. [2024-06-28 03:01:49,302 INFO L125 PetriNetUnfolderBase]: For 276108/276108 co-relation queries the response was YES. [2024-06-28 03:01:49,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16148 conditions, 2207 events. 1223/2207 cut-off events. For 276108/276108 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 13688 event pairs, 91 based on Foata normal form. 2/2208 useless extension candidates. Maximal degree in co-relation 15936. Up to 1647 conditions per place. [2024-06-28 03:01:49,334 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 396 selfloop transitions, 136 changer transitions 0/534 dead transitions. [2024-06-28 03:01:49,334 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 525 places, 534 transitions, 7847 flow [2024-06-28 03:01:49,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:01:49,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:01:49,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-28 03:01:49,335 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38636363636363635 [2024-06-28 03:01:49,335 INFO L175 Difference]: Start difference. First operand has 515 places, 516 transitions, 6733 flow. Second operand 11 states and 136 transitions. [2024-06-28 03:01:49,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 525 places, 534 transitions, 7847 flow [2024-06-28 03:01:50,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 518 places, 534 transitions, 7561 flow, removed 20 selfloop flow, removed 7 redundant places. [2024-06-28 03:01:50,776 INFO L231 Difference]: Finished difference. Result has 519 places, 516 transitions, 6724 flow [2024-06-28 03:01:50,776 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6447, PETRI_DIFFERENCE_MINUEND_PLACES=508, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=516, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=136, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=380, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6724, PETRI_PLACES=519, PETRI_TRANSITIONS=516} [2024-06-28 03:01:50,777 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 488 predicate places. [2024-06-28 03:01:50,777 INFO L495 AbstractCegarLoop]: Abstraction has has 519 places, 516 transitions, 6724 flow [2024-06-28 03:01:50,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:01:50,777 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:01:50,777 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:01:50,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2024-06-28 03:01:50,777 INFO L420 AbstractCegarLoop]: === Iteration 168 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:01:50,778 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:01:50,778 INFO L85 PathProgramCache]: Analyzing trace with hash -1708126124, now seen corresponding path program 18 times [2024-06-28 03:01:50,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:01:50,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553883907] [2024-06-28 03:01:50,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:01:50,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:01:50,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:01:51,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:01:51,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:01:51,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553883907] [2024-06-28 03:01:51,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553883907] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:01:51,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:01:51,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:01:51,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875817081] [2024-06-28 03:01:51,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:01:51,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:01:51,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:01:51,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:01:51,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:01:51,949 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 03:01:51,949 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 519 places, 516 transitions, 6724 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:01:51,950 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:01:51,950 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 03:01:51,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:01:52,752 INFO L124 PetriNetUnfolderBase]: 1229/2218 cut-off events. [2024-06-28 03:01:52,753 INFO L125 PetriNetUnfolderBase]: For 282559/282559 co-relation queries the response was YES. [2024-06-28 03:01:52,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16334 conditions, 2218 events. 1229/2218 cut-off events. For 282559/282559 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 13784 event pairs, 105 based on Foata normal form. 2/2219 useless extension candidates. Maximal degree in co-relation 16121. Up to 1364 conditions per place. [2024-06-28 03:01:52,786 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 363 selfloop transitions, 172 changer transitions 0/537 dead transitions. [2024-06-28 03:01:52,786 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 530 places, 537 transitions, 7990 flow [2024-06-28 03:01:52,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:01:52,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:01:52,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 148 transitions. [2024-06-28 03:01:52,787 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3854166666666667 [2024-06-28 03:01:52,788 INFO L175 Difference]: Start difference. First operand has 519 places, 516 transitions, 6724 flow. Second operand 12 states and 148 transitions. [2024-06-28 03:01:52,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 530 places, 537 transitions, 7990 flow [2024-06-28 03:01:54,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 520 places, 537 transitions, 7704 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-28 03:01:54,209 INFO L231 Difference]: Finished difference. Result has 521 places, 518 transitions, 6927 flow [2024-06-28 03:01:54,209 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6438, PETRI_DIFFERENCE_MINUEND_PLACES=509, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=516, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=170, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=344, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6927, PETRI_PLACES=521, PETRI_TRANSITIONS=518} [2024-06-28 03:01:54,209 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 490 predicate places. [2024-06-28 03:01:54,209 INFO L495 AbstractCegarLoop]: Abstraction has has 521 places, 518 transitions, 6927 flow [2024-06-28 03:01:54,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:01:54,210 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:01:54,210 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:01:54,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2024-06-28 03:01:54,210 INFO L420 AbstractCegarLoop]: === Iteration 169 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:01:54,210 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:01:54,210 INFO L85 PathProgramCache]: Analyzing trace with hash -1764996440, now seen corresponding path program 19 times [2024-06-28 03:01:54,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:01:54,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824294711] [2024-06-28 03:01:54,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:01:54,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:01:54,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:01:55,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:01:55,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:01:55,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824294711] [2024-06-28 03:01:55,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824294711] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:01:55,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:01:55,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:01:55,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812879924] [2024-06-28 03:01:55,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:01:55,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:01:55,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:01:55,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:01:55,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:01:55,143 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 03:01:55,143 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 521 places, 518 transitions, 6927 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:01:55,143 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:01:55,143 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 03:01:55,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:01:55,951 INFO L124 PetriNetUnfolderBase]: 1235/2228 cut-off events. [2024-06-28 03:01:55,952 INFO L125 PetriNetUnfolderBase]: For 290015/290015 co-relation queries the response was YES. [2024-06-28 03:01:55,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16684 conditions, 2228 events. 1235/2228 cut-off events. For 290015/290015 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 13877 event pairs, 97 based on Foata normal form. 2/2229 useless extension candidates. Maximal degree in co-relation 16470. Up to 1338 conditions per place. [2024-06-28 03:01:56,078 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 372 selfloop transitions, 170 changer transitions 0/544 dead transitions. [2024-06-28 03:01:56,079 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 533 places, 544 transitions, 8229 flow [2024-06-28 03:01:56,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 03:01:56,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 03:01:56,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 168 transitions. [2024-06-28 03:01:56,080 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40384615384615385 [2024-06-28 03:01:56,080 INFO L175 Difference]: Start difference. First operand has 521 places, 518 transitions, 6927 flow. Second operand 13 states and 168 transitions. [2024-06-28 03:01:56,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 533 places, 544 transitions, 8229 flow [2024-06-28 03:01:57,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 523 places, 544 transitions, 7756 flow, removed 66 selfloop flow, removed 10 redundant places. [2024-06-28 03:01:57,364 INFO L231 Difference]: Finished difference. Result has 524 places, 520 transitions, 6943 flow [2024-06-28 03:01:57,364 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6454, PETRI_DIFFERENCE_MINUEND_PLACES=511, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=518, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=168, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=348, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=6943, PETRI_PLACES=524, PETRI_TRANSITIONS=520} [2024-06-28 03:01:57,365 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 493 predicate places. [2024-06-28 03:01:57,365 INFO L495 AbstractCegarLoop]: Abstraction has has 524 places, 520 transitions, 6943 flow [2024-06-28 03:01:57,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:01:57,365 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:01:57,365 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:01:57,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2024-06-28 03:01:57,365 INFO L420 AbstractCegarLoop]: === Iteration 170 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:01:57,366 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:01:57,366 INFO L85 PathProgramCache]: Analyzing trace with hash -1764996595, now seen corresponding path program 16 times [2024-06-28 03:01:57,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:01:57,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626481666] [2024-06-28 03:01:57,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:01:57,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:01:57,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:01:58,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:01:58,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:01:58,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626481666] [2024-06-28 03:01:58,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626481666] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:01:58,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:01:58,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:01:58,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959871976] [2024-06-28 03:01:58,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:01:58,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:01:58,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:01:58,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:01:58,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:01:58,412 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 03:01:58,412 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 524 places, 520 transitions, 6943 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:01:58,413 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:01:58,413 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 03:01:58,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:01:59,131 INFO L124 PetriNetUnfolderBase]: 1239/2236 cut-off events. [2024-06-28 03:01:59,131 INFO L125 PetriNetUnfolderBase]: For 291388/291388 co-relation queries the response was YES. [2024-06-28 03:01:59,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16644 conditions, 2236 events. 1239/2236 cut-off events. For 291388/291388 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 13939 event pairs, 133 based on Foata normal form. 2/2237 useless extension candidates. Maximal degree in co-relation 16429. Up to 1864 conditions per place. [2024-06-28 03:01:59,167 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 423 selfloop transitions, 111 changer transitions 0/536 dead transitions. [2024-06-28 03:01:59,168 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 535 places, 536 transitions, 8107 flow [2024-06-28 03:01:59,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:01:59,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:01:59,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 143 transitions. [2024-06-28 03:01:59,169 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3723958333333333 [2024-06-28 03:01:59,169 INFO L175 Difference]: Start difference. First operand has 524 places, 520 transitions, 6943 flow. Second operand 12 states and 143 transitions. [2024-06-28 03:01:59,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 535 places, 536 transitions, 8107 flow [2024-06-28 03:02:00,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 524 places, 536 transitions, 7634 flow, removed 68 selfloop flow, removed 11 redundant places. [2024-06-28 03:02:00,583 INFO L231 Difference]: Finished difference. Result has 525 places, 521 transitions, 6752 flow [2024-06-28 03:02:00,583 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6470, PETRI_DIFFERENCE_MINUEND_PLACES=513, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=520, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=409, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6752, PETRI_PLACES=525, PETRI_TRANSITIONS=521} [2024-06-28 03:02:00,583 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 494 predicate places. [2024-06-28 03:02:00,584 INFO L495 AbstractCegarLoop]: Abstraction has has 525 places, 521 transitions, 6752 flow [2024-06-28 03:02:00,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:02:00,584 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:02:00,584 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:02:00,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2024-06-28 03:02:00,584 INFO L420 AbstractCegarLoop]: === Iteration 171 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:02:00,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:02:00,584 INFO L85 PathProgramCache]: Analyzing trace with hash -1958935850, now seen corresponding path program 20 times [2024-06-28 03:02:00,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:02:00,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641879759] [2024-06-28 03:02:00,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:02:00,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:02:00,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:02:01,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:02:01,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:02:01,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641879759] [2024-06-28 03:02:01,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641879759] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:02:01,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:02:01,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:02:01,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442275658] [2024-06-28 03:02:01,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:02:01,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:02:01,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:02:01,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:02:01,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:02:01,628 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 03:02:01,629 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 525 places, 521 transitions, 6752 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:02:01,629 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:02:01,629 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 03:02:01,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:02:02,404 INFO L124 PetriNetUnfolderBase]: 1245/2246 cut-off events. [2024-06-28 03:02:02,405 INFO L125 PetriNetUnfolderBase]: For 294269/294269 co-relation queries the response was YES. [2024-06-28 03:02:02,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16529 conditions, 2246 events. 1245/2246 cut-off events. For 294269/294269 co-relation queries the response was YES. Maximal size of possible extension queue 243. Compared 14054 event pairs, 93 based on Foata normal form. 2/2247 useless extension candidates. Maximal degree in co-relation 16313. Up to 1368 conditions per place. [2024-06-28 03:02:02,444 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 373 selfloop transitions, 172 changer transitions 0/547 dead transitions. [2024-06-28 03:02:02,444 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 537 places, 547 transitions, 8064 flow [2024-06-28 03:02:02,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 03:02:02,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 03:02:02,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 167 transitions. [2024-06-28 03:02:02,445 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4014423076923077 [2024-06-28 03:02:02,445 INFO L175 Difference]: Start difference. First operand has 525 places, 521 transitions, 6752 flow. Second operand 13 states and 167 transitions. [2024-06-28 03:02:02,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 537 places, 547 transitions, 8064 flow [2024-06-28 03:02:03,825 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 527 places, 547 transitions, 7792 flow, removed 26 selfloop flow, removed 10 redundant places. [2024-06-28 03:02:03,832 INFO L231 Difference]: Finished difference. Result has 528 places, 523 transitions, 6977 flow [2024-06-28 03:02:03,832 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6480, PETRI_DIFFERENCE_MINUEND_PLACES=515, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=521, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=170, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=349, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=6977, PETRI_PLACES=528, PETRI_TRANSITIONS=523} [2024-06-28 03:02:03,832 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 497 predicate places. [2024-06-28 03:02:03,832 INFO L495 AbstractCegarLoop]: Abstraction has has 528 places, 523 transitions, 6977 flow [2024-06-28 03:02:03,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:02:03,832 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:02:03,833 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:02:03,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2024-06-28 03:02:03,833 INFO L420 AbstractCegarLoop]: === Iteration 172 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:02:03,833 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:02:03,833 INFO L85 PathProgramCache]: Analyzing trace with hash 1076954410, now seen corresponding path program 14 times [2024-06-28 03:02:03,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:02:03,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062185530] [2024-06-28 03:02:03,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:02:03,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:02:03,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:02:04,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:02:04,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:02:04,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062185530] [2024-06-28 03:02:04,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062185530] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:02:04,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:02:04,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:02:04,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547899477] [2024-06-28 03:02:04,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:02:04,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:02:04,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:02:04,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:02:04,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:02:05,056 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 03:02:05,057 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 528 places, 523 transitions, 6977 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:02:05,057 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:02:05,057 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 03:02:05,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:02:05,746 INFO L124 PetriNetUnfolderBase]: 1249/2253 cut-off events. [2024-06-28 03:02:05,746 INFO L125 PetriNetUnfolderBase]: For 297340/297340 co-relation queries the response was YES. [2024-06-28 03:02:05,776 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16724 conditions, 2253 events. 1249/2253 cut-off events. For 297340/297340 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 14036 event pairs, 95 based on Foata normal form. 2/2254 useless extension candidates. Maximal degree in co-relation 16507. Up to 1677 conditions per place. [2024-06-28 03:02:05,782 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 386 selfloop transitions, 153 changer transitions 0/541 dead transitions. [2024-06-28 03:02:05,783 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 538 places, 541 transitions, 8129 flow [2024-06-28 03:02:05,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:02:05,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:02:05,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-28 03:02:05,784 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835227272727273 [2024-06-28 03:02:05,784 INFO L175 Difference]: Start difference. First operand has 528 places, 523 transitions, 6977 flow. Second operand 11 states and 135 transitions. [2024-06-28 03:02:05,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 538 places, 541 transitions, 8129 flow [2024-06-28 03:02:07,248 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 527 places, 541 transitions, 7648 flow, removed 70 selfloop flow, removed 11 redundant places. [2024-06-28 03:02:07,255 INFO L231 Difference]: Finished difference. Result has 528 places, 524 transitions, 6838 flow [2024-06-28 03:02:07,255 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6496, PETRI_DIFFERENCE_MINUEND_PLACES=517, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=523, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=152, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=370, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6838, PETRI_PLACES=528, PETRI_TRANSITIONS=524} [2024-06-28 03:02:07,255 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 497 predicate places. [2024-06-28 03:02:07,255 INFO L495 AbstractCegarLoop]: Abstraction has has 528 places, 524 transitions, 6838 flow [2024-06-28 03:02:07,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:02:07,256 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:02:07,256 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:02:07,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2024-06-28 03:02:07,256 INFO L420 AbstractCegarLoop]: === Iteration 173 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:02:07,256 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:02:07,256 INFO L85 PathProgramCache]: Analyzing trace with hash -1964298230, now seen corresponding path program 21 times [2024-06-28 03:02:07,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:02:07,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601281574] [2024-06-28 03:02:07,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:02:07,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:02:07,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:02:08,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:02:08,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:02:08,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601281574] [2024-06-28 03:02:08,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601281574] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:02:08,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:02:08,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:02:08,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991133866] [2024-06-28 03:02:08,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:02:08,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:02:08,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:02:08,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:02:08,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:02:08,293 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 03:02:08,294 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 528 places, 524 transitions, 6838 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:02:08,294 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:02:08,294 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 03:02:08,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:02:09,050 INFO L124 PetriNetUnfolderBase]: 1255/2264 cut-off events. [2024-06-28 03:02:09,050 INFO L125 PetriNetUnfolderBase]: For 300764/300764 co-relation queries the response was YES. [2024-06-28 03:02:09,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16724 conditions, 2264 events. 1255/2264 cut-off events. For 300764/300764 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 14146 event pairs, 95 based on Foata normal form. 2/2265 useless extension candidates. Maximal degree in co-relation 16506. Up to 1362 conditions per place. [2024-06-28 03:02:09,086 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 357 selfloop transitions, 187 changer transitions 0/546 dead transitions. [2024-06-28 03:02:09,086 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 539 places, 546 transitions, 8138 flow [2024-06-28 03:02:09,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:02:09,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:02:09,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 153 transitions. [2024-06-28 03:02:09,087 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3984375 [2024-06-28 03:02:09,088 INFO L175 Difference]: Start difference. First operand has 528 places, 524 transitions, 6838 flow. Second operand 12 states and 153 transitions. [2024-06-28 03:02:09,088 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 539 places, 546 transitions, 8138 flow [2024-06-28 03:02:10,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 530 places, 546 transitions, 7806 flow, removed 14 selfloop flow, removed 9 redundant places. [2024-06-28 03:02:10,508 INFO L231 Difference]: Finished difference. Result has 531 places, 526 transitions, 7037 flow [2024-06-28 03:02:10,509 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6506, PETRI_DIFFERENCE_MINUEND_PLACES=519, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=524, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=185, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=337, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7037, PETRI_PLACES=531, PETRI_TRANSITIONS=526} [2024-06-28 03:02:10,509 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 500 predicate places. [2024-06-28 03:02:10,509 INFO L495 AbstractCegarLoop]: Abstraction has has 531 places, 526 transitions, 7037 flow [2024-06-28 03:02:10,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:02:10,509 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:02:10,509 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:02:10,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2024-06-28 03:02:10,510 INFO L420 AbstractCegarLoop]: === Iteration 174 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:02:10,510 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:02:10,510 INFO L85 PathProgramCache]: Analyzing trace with hash -1964442535, now seen corresponding path program 17 times [2024-06-28 03:02:10,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:02:10,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383129142] [2024-06-28 03:02:10,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:02:10,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:02:10,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:02:11,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:02:11,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:02:11,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383129142] [2024-06-28 03:02:11,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383129142] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:02:11,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:02:11,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:02:11,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562202799] [2024-06-28 03:02:11,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:02:11,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:02:11,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:02:11,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:02:11,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:02:11,504 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 03:02:11,504 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 531 places, 526 transitions, 7037 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:02:11,504 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:02:11,504 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 03:02:11,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:02:12,186 INFO L124 PetriNetUnfolderBase]: 1259/2272 cut-off events. [2024-06-28 03:02:12,186 INFO L125 PetriNetUnfolderBase]: For 305788/305788 co-relation queries the response was YES. [2024-06-28 03:02:12,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16936 conditions, 2272 events. 1259/2272 cut-off events. For 305788/305788 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 14222 event pairs, 137 based on Foata normal form. 2/2273 useless extension candidates. Maximal degree in co-relation 16717. Up to 1877 conditions per place. [2024-06-28 03:02:12,221 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 414 selfloop transitions, 126 changer transitions 0/542 dead transitions. [2024-06-28 03:02:12,222 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 542 places, 542 transitions, 8215 flow [2024-06-28 03:02:12,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:02:12,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:02:12,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 142 transitions. [2024-06-28 03:02:12,222 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3697916666666667 [2024-06-28 03:02:12,223 INFO L175 Difference]: Start difference. First operand has 531 places, 526 transitions, 7037 flow. Second operand 12 states and 142 transitions. [2024-06-28 03:02:12,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 542 places, 542 transitions, 8215 flow [2024-06-28 03:02:13,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 532 places, 542 transitions, 7700 flow, removed 72 selfloop flow, removed 10 redundant places. [2024-06-28 03:02:13,830 INFO L231 Difference]: Finished difference. Result has 533 places, 527 transitions, 6836 flow [2024-06-28 03:02:13,830 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6522, PETRI_DIFFERENCE_MINUEND_PLACES=521, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=526, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=400, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6836, PETRI_PLACES=533, PETRI_TRANSITIONS=527} [2024-06-28 03:02:13,830 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 502 predicate places. [2024-06-28 03:02:13,830 INFO L495 AbstractCegarLoop]: Abstraction has has 533 places, 527 transitions, 6836 flow [2024-06-28 03:02:13,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:02:13,831 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:02:13,831 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:02:13,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2024-06-28 03:02:13,831 INFO L420 AbstractCegarLoop]: === Iteration 175 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:02:13,831 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:02:13,831 INFO L85 PathProgramCache]: Analyzing trace with hash -1964442380, now seen corresponding path program 22 times [2024-06-28 03:02:13,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:02:13,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176411995] [2024-06-28 03:02:13,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:02:13,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:02:13,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:02:14,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:02:14,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:02:14,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176411995] [2024-06-28 03:02:14,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176411995] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:02:14,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:02:14,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:02:14,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377274424] [2024-06-28 03:02:14,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:02:14,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:02:14,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:02:14,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:02:14,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:02:14,906 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 03:02:14,906 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 533 places, 527 transitions, 6836 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:02:14,906 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:02:14,906 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 03:02:14,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:02:15,765 INFO L124 PetriNetUnfolderBase]: 1265/2282 cut-off events. [2024-06-28 03:02:15,766 INFO L125 PetriNetUnfolderBase]: For 307787/307787 co-relation queries the response was YES. [2024-06-28 03:02:15,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16809 conditions, 2282 events. 1265/2282 cut-off events. For 307787/307787 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 14315 event pairs, 90 based on Foata normal form. 2/2283 useless extension candidates. Maximal degree in co-relation 16589. Up to 1273 conditions per place. [2024-06-28 03:02:15,798 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 338 selfloop transitions, 211 changer transitions 0/551 dead transitions. [2024-06-28 03:02:15,799 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 545 places, 551 transitions, 8156 flow [2024-06-28 03:02:15,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 03:02:15,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 03:02:15,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 165 transitions. [2024-06-28 03:02:15,800 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39663461538461536 [2024-06-28 03:02:15,800 INFO L175 Difference]: Start difference. First operand has 533 places, 527 transitions, 6836 flow. Second operand 13 states and 165 transitions. [2024-06-28 03:02:15,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 545 places, 551 transitions, 8156 flow [2024-06-28 03:02:17,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 535 places, 551 transitions, 7852 flow, removed 27 selfloop flow, removed 10 redundant places. [2024-06-28 03:02:17,408 INFO L231 Difference]: Finished difference. Result has 536 places, 529 transitions, 7115 flow [2024-06-28 03:02:17,409 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6532, PETRI_DIFFERENCE_MINUEND_PLACES=523, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=527, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=209, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=316, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=7115, PETRI_PLACES=536, PETRI_TRANSITIONS=529} [2024-06-28 03:02:17,409 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 505 predicate places. [2024-06-28 03:02:17,409 INFO L495 AbstractCegarLoop]: Abstraction has has 536 places, 529 transitions, 7115 flow [2024-06-28 03:02:17,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:02:17,410 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:02:17,410 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:02:17,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2024-06-28 03:02:17,410 INFO L420 AbstractCegarLoop]: === Iteration 176 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:02:17,410 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:02:17,410 INFO L85 PathProgramCache]: Analyzing trace with hash -1964446255, now seen corresponding path program 18 times [2024-06-28 03:02:17,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:02:17,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357380788] [2024-06-28 03:02:17,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:02:17,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:02:17,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:02:18,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:02:18,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:02:18,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357380788] [2024-06-28 03:02:18,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357380788] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:02:18,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:02:18,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:02:18,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611772644] [2024-06-28 03:02:18,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:02:18,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:02:18,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:02:18,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:02:18,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:02:18,443 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 03:02:18,443 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 536 places, 529 transitions, 7115 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:02:18,443 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:02:18,444 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 03:02:18,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:02:19,077 INFO L124 PetriNetUnfolderBase]: 1269/2290 cut-off events. [2024-06-28 03:02:19,077 INFO L125 PetriNetUnfolderBase]: For 312352/312352 co-relation queries the response was YES. [2024-06-28 03:02:19,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17127 conditions, 2290 events. 1269/2290 cut-off events. For 312352/312352 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 14347 event pairs, 137 based on Foata normal form. 2/2291 useless extension candidates. Maximal degree in co-relation 16906. Up to 1857 conditions per place. [2024-06-28 03:02:19,116 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 413 selfloop transitions, 131 changer transitions 0/546 dead transitions. [2024-06-28 03:02:19,116 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 547 places, 546 transitions, 8305 flow [2024-06-28 03:02:19,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:02:19,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:02:19,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 143 transitions. [2024-06-28 03:02:19,117 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3723958333333333 [2024-06-28 03:02:19,117 INFO L175 Difference]: Start difference. First operand has 536 places, 529 transitions, 7115 flow. Second operand 12 states and 143 transitions. [2024-06-28 03:02:19,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 547 places, 546 transitions, 8305 flow [2024-06-28 03:02:20,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 536 places, 546 transitions, 7738 flow, removed 74 selfloop flow, removed 11 redundant places. [2024-06-28 03:02:20,888 INFO L231 Difference]: Finished difference. Result has 537 places, 530 transitions, 6874 flow [2024-06-28 03:02:20,888 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6548, PETRI_DIFFERENCE_MINUEND_PLACES=525, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=529, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=130, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=398, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6874, PETRI_PLACES=537, PETRI_TRANSITIONS=530} [2024-06-28 03:02:20,888 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 506 predicate places. [2024-06-28 03:02:20,888 INFO L495 AbstractCegarLoop]: Abstraction has has 537 places, 530 transitions, 6874 flow [2024-06-28 03:02:20,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:02:20,889 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:02:20,889 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:02:20,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2024-06-28 03:02:20,889 INFO L420 AbstractCegarLoop]: === Iteration 177 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:02:20,890 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:02:20,890 INFO L85 PathProgramCache]: Analyzing trace with hash 1077271540, now seen corresponding path program 15 times [2024-06-28 03:02:20,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:02:20,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6674674] [2024-06-28 03:02:20,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:02:20,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:02:20,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:02:21,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:02:21,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:02:21,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6674674] [2024-06-28 03:02:21,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6674674] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:02:21,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:02:21,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:02:21,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326837407] [2024-06-28 03:02:21,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:02:21,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:02:21,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:02:21,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:02:21,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:02:21,954 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 03:02:21,954 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 537 places, 530 transitions, 6874 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:02:21,955 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:02:21,955 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 03:02:21,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:02:22,648 INFO L124 PetriNetUnfolderBase]: 1273/2297 cut-off events. [2024-06-28 03:02:22,649 INFO L125 PetriNetUnfolderBase]: For 311068/311068 co-relation queries the response was YES. [2024-06-28 03:02:22,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16775 conditions, 2297 events. 1273/2297 cut-off events. For 311068/311068 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 14383 event pairs, 102 based on Foata normal form. 2/2298 useless extension candidates. Maximal degree in co-relation 16553. Up to 1565 conditions per place. [2024-06-28 03:02:22,690 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 381 selfloop transitions, 165 changer transitions 0/548 dead transitions. [2024-06-28 03:02:22,690 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 547 places, 548 transitions, 8040 flow [2024-06-28 03:02:22,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:02:22,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:02:22,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-28 03:02:22,691 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835227272727273 [2024-06-28 03:02:22,691 INFO L175 Difference]: Start difference. First operand has 537 places, 530 transitions, 6874 flow. Second operand 11 states and 135 transitions. [2024-06-28 03:02:22,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 547 places, 548 transitions, 8040 flow [2024-06-28 03:02:24,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 538 places, 548 transitions, 7744 flow, removed 28 selfloop flow, removed 9 redundant places. [2024-06-28 03:02:24,365 INFO L231 Difference]: Finished difference. Result has 539 places, 531 transitions, 6946 flow [2024-06-28 03:02:24,366 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6578, PETRI_DIFFERENCE_MINUEND_PLACES=528, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=530, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=164, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=365, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6946, PETRI_PLACES=539, PETRI_TRANSITIONS=531} [2024-06-28 03:02:24,366 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 508 predicate places. [2024-06-28 03:02:24,366 INFO L495 AbstractCegarLoop]: Abstraction has has 539 places, 531 transitions, 6946 flow [2024-06-28 03:02:24,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:02:24,366 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:02:24,367 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:02:24,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2024-06-28 03:02:24,367 INFO L420 AbstractCegarLoop]: === Iteration 178 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:02:24,367 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:02:24,367 INFO L85 PathProgramCache]: Analyzing trace with hash -1369763180, now seen corresponding path program 16 times [2024-06-28 03:02:24,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:02:24,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744475199] [2024-06-28 03:02:24,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:02:24,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:02:24,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:02:25,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:02:25,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:02:25,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744475199] [2024-06-28 03:02:25,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744475199] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:02:25,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:02:25,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:02:25,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016522402] [2024-06-28 03:02:25,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:02:25,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:02:25,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:02:25,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:02:25,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:02:25,530 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 03:02:25,531 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 539 places, 531 transitions, 6946 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:02:25,531 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:02:25,531 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 03:02:25,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:02:26,340 INFO L124 PetriNetUnfolderBase]: 1289/2326 cut-off events. [2024-06-28 03:02:26,341 INFO L125 PetriNetUnfolderBase]: For 314316/314316 co-relation queries the response was YES. [2024-06-28 03:02:26,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17063 conditions, 2326 events. 1289/2326 cut-off events. For 314316/314316 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 14631 event pairs, 249 based on Foata normal form. 2/2327 useless extension candidates. Maximal degree in co-relation 16840. Up to 2251 conditions per place. [2024-06-28 03:02:26,380 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 524 selfloop transitions, 25 changer transitions 0/551 dead transitions. [2024-06-28 03:02:26,381 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 549 places, 551 transitions, 8192 flow [2024-06-28 03:02:26,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:02:26,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:02:26,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-28 03:02:26,381 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3494318181818182 [2024-06-28 03:02:26,382 INFO L175 Difference]: Start difference. First operand has 539 places, 531 transitions, 6946 flow. Second operand 11 states and 123 transitions. [2024-06-28 03:02:26,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 549 places, 551 transitions, 8192 flow [2024-06-28 03:02:28,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 540 places, 551 transitions, 7826 flow, removed 15 selfloop flow, removed 9 redundant places. [2024-06-28 03:02:28,118 INFO L231 Difference]: Finished difference. Result has 541 places, 536 transitions, 6744 flow [2024-06-28 03:02:28,118 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6588, PETRI_DIFFERENCE_MINUEND_PLACES=530, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=531, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=510, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6744, PETRI_PLACES=541, PETRI_TRANSITIONS=536} [2024-06-28 03:02:28,118 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 510 predicate places. [2024-06-28 03:02:28,118 INFO L495 AbstractCegarLoop]: Abstraction has has 541 places, 536 transitions, 6744 flow [2024-06-28 03:02:28,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:02:28,119 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:02:28,119 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:02:28,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2024-06-28 03:02:28,119 INFO L420 AbstractCegarLoop]: === Iteration 179 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:02:28,119 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:02:28,119 INFO L85 PathProgramCache]: Analyzing trace with hash 173065674, now seen corresponding path program 17 times [2024-06-28 03:02:28,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:02:28,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910477755] [2024-06-28 03:02:28,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:02:28,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:02:28,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:02:29,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:02:29,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:02:29,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910477755] [2024-06-28 03:02:29,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910477755] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:02:29,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:02:29,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:02:29,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520427631] [2024-06-28 03:02:29,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:02:29,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:02:29,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:02:29,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:02:29,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:02:29,430 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 03:02:29,430 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 541 places, 536 transitions, 6744 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:02:29,430 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:02:29,430 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 03:02:29,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:02:30,297 INFO L124 PetriNetUnfolderBase]: 1299/2344 cut-off events. [2024-06-28 03:02:30,297 INFO L125 PetriNetUnfolderBase]: For 316899/316899 co-relation queries the response was YES. [2024-06-28 03:02:30,331 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16836 conditions, 2344 events. 1299/2344 cut-off events. For 316899/316899 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 14748 event pairs, 249 based on Foata normal form. 2/2345 useless extension candidates. Maximal degree in co-relation 16612. Up to 2157 conditions per place. [2024-06-28 03:02:30,338 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 501 selfloop transitions, 51 changer transitions 0/554 dead transitions. [2024-06-28 03:02:30,338 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 551 places, 554 transitions, 7957 flow [2024-06-28 03:02:30,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:02:30,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:02:30,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-28 03:02:30,339 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3664772727272727 [2024-06-28 03:02:30,339 INFO L175 Difference]: Start difference. First operand has 541 places, 536 transitions, 6744 flow. Second operand 11 states and 129 transitions. [2024-06-28 03:02:30,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 551 places, 554 transitions, 7957 flow [2024-06-28 03:02:32,052 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 545 places, 554 transitions, 7890 flow, removed 18 selfloop flow, removed 6 redundant places. [2024-06-28 03:02:32,059 INFO L231 Difference]: Finished difference. Result has 546 places, 539 transitions, 6854 flow [2024-06-28 03:02:32,060 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6677, PETRI_DIFFERENCE_MINUEND_PLACES=535, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=536, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=487, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6854, PETRI_PLACES=546, PETRI_TRANSITIONS=539} [2024-06-28 03:02:32,060 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 515 predicate places. [2024-06-28 03:02:32,060 INFO L495 AbstractCegarLoop]: Abstraction has has 546 places, 539 transitions, 6854 flow [2024-06-28 03:02:32,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:02:32,061 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:02:32,061 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:02:32,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2024-06-28 03:02:32,061 INFO L420 AbstractCegarLoop]: === Iteration 180 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:02:32,062 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:02:32,062 INFO L85 PathProgramCache]: Analyzing trace with hash 173074974, now seen corresponding path program 18 times [2024-06-28 03:02:32,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:02:32,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400413655] [2024-06-28 03:02:32,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:02:32,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:02:32,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:02:33,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:02:33,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:02:33,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400413655] [2024-06-28 03:02:33,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400413655] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:02:33,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:02:33,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:02:33,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034356468] [2024-06-28 03:02:33,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:02:33,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:02:33,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:02:33,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:02:33,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:02:33,365 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 03:02:33,365 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 546 places, 539 transitions, 6854 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:02:33,365 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:02:33,365 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 03:02:33,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:02:34,207 INFO L124 PetriNetUnfolderBase]: 1303/2352 cut-off events. [2024-06-28 03:02:34,207 INFO L125 PetriNetUnfolderBase]: For 320849/320849 co-relation queries the response was YES. [2024-06-28 03:02:34,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16959 conditions, 2352 events. 1303/2352 cut-off events. For 320849/320849 co-relation queries the response was YES. Maximal size of possible extension queue 253. Compared 14845 event pairs, 247 based on Foata normal form. 2/2353 useless extension candidates. Maximal degree in co-relation 16734. Up to 2151 conditions per place. [2024-06-28 03:02:34,242 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 501 selfloop transitions, 52 changer transitions 0/555 dead transitions. [2024-06-28 03:02:34,243 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 556 places, 555 transitions, 8036 flow [2024-06-28 03:02:34,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:02:34,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:02:34,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-28 03:02:34,244 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3693181818181818 [2024-06-28 03:02:34,244 INFO L175 Difference]: Start difference. First operand has 546 places, 539 transitions, 6854 flow. Second operand 11 states and 130 transitions. [2024-06-28 03:02:34,244 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 556 places, 555 transitions, 8036 flow [2024-06-28 03:02:36,010 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 550 places, 555 transitions, 7925 flow, removed 21 selfloop flow, removed 6 redundant places. [2024-06-28 03:02:36,017 INFO L231 Difference]: Finished difference. Result has 551 places, 540 transitions, 6891 flow [2024-06-28 03:02:36,017 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6743, PETRI_DIFFERENCE_MINUEND_PLACES=540, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=539, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=487, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6891, PETRI_PLACES=551, PETRI_TRANSITIONS=540} [2024-06-28 03:02:36,018 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 520 predicate places. [2024-06-28 03:02:36,018 INFO L495 AbstractCegarLoop]: Abstraction has has 551 places, 540 transitions, 6891 flow [2024-06-28 03:02:36,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:02:36,018 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:02:36,018 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:02:36,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2024-06-28 03:02:36,018 INFO L420 AbstractCegarLoop]: === Iteration 181 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:02:36,019 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:02:36,019 INFO L85 PathProgramCache]: Analyzing trace with hash 1626306746, now seen corresponding path program 19 times [2024-06-28 03:02:36,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:02:36,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571154826] [2024-06-28 03:02:36,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:02:36,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:02:36,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:02:36,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:02:36,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:02:36,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571154826] [2024-06-28 03:02:36,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571154826] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:02:36,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:02:36,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:02:36,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524349521] [2024-06-28 03:02:36,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:02:36,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:02:36,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:02:36,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:02:36,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:02:37,052 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 03:02:37,052 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 551 places, 540 transitions, 6891 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:02:37,052 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:02:37,052 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 03:02:37,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:02:37,831 INFO L124 PetriNetUnfolderBase]: 1313/2370 cut-off events. [2024-06-28 03:02:37,831 INFO L125 PetriNetUnfolderBase]: For 325803/325803 co-relation queries the response was YES. [2024-06-28 03:02:37,860 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17098 conditions, 2370 events. 1313/2370 cut-off events. For 325803/325803 co-relation queries the response was YES. Maximal size of possible extension queue 256. Compared 14975 event pairs, 245 based on Foata normal form. 2/2371 useless extension candidates. Maximal degree in co-relation 16872. Up to 2204 conditions per place. [2024-06-28 03:02:37,866 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 510 selfloop transitions, 47 changer transitions 0/559 dead transitions. [2024-06-28 03:02:37,866 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 561 places, 559 transitions, 8126 flow [2024-06-28 03:02:37,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:02:37,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:02:37,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-28 03:02:37,867 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3664772727272727 [2024-06-28 03:02:37,867 INFO L175 Difference]: Start difference. First operand has 551 places, 540 transitions, 6891 flow. Second operand 11 states and 129 transitions. [2024-06-28 03:02:37,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 561 places, 559 transitions, 8126 flow [2024-06-28 03:02:39,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 552 places, 559 transitions, 7984 flow, removed 18 selfloop flow, removed 9 redundant places. [2024-06-28 03:02:39,597 INFO L231 Difference]: Finished difference. Result has 553 places, 543 transitions, 6926 flow [2024-06-28 03:02:39,598 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6753, PETRI_DIFFERENCE_MINUEND_PLACES=542, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=540, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=495, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6926, PETRI_PLACES=553, PETRI_TRANSITIONS=543} [2024-06-28 03:02:39,598 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 522 predicate places. [2024-06-28 03:02:39,598 INFO L495 AbstractCegarLoop]: Abstraction has has 553 places, 543 transitions, 6926 flow [2024-06-28 03:02:39,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:02:39,598 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:02:39,598 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:02:39,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2024-06-28 03:02:39,599 INFO L420 AbstractCegarLoop]: === Iteration 182 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:02:39,599 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:02:39,599 INFO L85 PathProgramCache]: Analyzing trace with hash 1560669429, now seen corresponding path program 19 times [2024-06-28 03:02:39,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:02:39,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353120903] [2024-06-28 03:02:39,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:02:39,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:02:39,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:02:40,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:02:40,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:02:40,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353120903] [2024-06-28 03:02:40,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353120903] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:02:40,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:02:40,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:02:40,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310308153] [2024-06-28 03:02:40,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:02:40,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:02:40,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:02:40,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:02:40,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:02:40,512 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 03:02:40,512 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 553 places, 543 transitions, 6926 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:02:40,512 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:02:40,512 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 03:02:40,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:02:41,262 INFO L124 PetriNetUnfolderBase]: 1317/2378 cut-off events. [2024-06-28 03:02:41,262 INFO L125 PetriNetUnfolderBase]: For 329407/329407 co-relation queries the response was YES. [2024-06-28 03:02:41,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17175 conditions, 2378 events. 1317/2378 cut-off events. For 329407/329407 co-relation queries the response was YES. Maximal size of possible extension queue 256. Compared 15017 event pairs, 263 based on Foata normal form. 2/2379 useless extension candidates. Maximal degree in co-relation 16948. Up to 2279 conditions per place. [2024-06-28 03:02:41,302 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 499 selfloop transitions, 55 changer transitions 0/556 dead transitions. [2024-06-28 03:02:41,303 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 564 places, 556 transitions, 8120 flow [2024-06-28 03:02:41,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:02:41,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:02:41,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 130 transitions. [2024-06-28 03:02:41,304 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3385416666666667 [2024-06-28 03:02:41,304 INFO L175 Difference]: Start difference. First operand has 553 places, 543 transitions, 6926 flow. Second operand 12 states and 130 transitions. [2024-06-28 03:02:41,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 564 places, 556 transitions, 8120 flow [2024-06-28 03:02:43,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 556 places, 556 transitions, 7992 flow, removed 19 selfloop flow, removed 8 redundant places. [2024-06-28 03:02:43,177 INFO L231 Difference]: Finished difference. Result has 557 places, 544 transitions, 6974 flow [2024-06-28 03:02:43,177 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6798, PETRI_DIFFERENCE_MINUEND_PLACES=545, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=543, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=488, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6974, PETRI_PLACES=557, PETRI_TRANSITIONS=544} [2024-06-28 03:02:43,177 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 526 predicate places. [2024-06-28 03:02:43,177 INFO L495 AbstractCegarLoop]: Abstraction has has 557 places, 544 transitions, 6974 flow [2024-06-28 03:02:43,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:02:43,178 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:02:43,178 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:02:43,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181 [2024-06-28 03:02:43,178 INFO L420 AbstractCegarLoop]: === Iteration 183 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:02:43,179 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:02:43,179 INFO L85 PathProgramCache]: Analyzing trace with hash -1646163982, now seen corresponding path program 20 times [2024-06-28 03:02:43,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:02:43,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62954271] [2024-06-28 03:02:43,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:02:43,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:02:43,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:02:44,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:02:44,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:02:44,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62954271] [2024-06-28 03:02:44,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62954271] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:02:44,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:02:44,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:02:44,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294549567] [2024-06-28 03:02:44,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:02:44,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:02:44,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:02:44,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:02:44,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:02:44,432 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 03:02:44,433 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 557 places, 544 transitions, 6974 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:02:44,433 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:02:44,433 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 03:02:44,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:02:45,231 INFO L124 PetriNetUnfolderBase]: 1327/2396 cut-off events. [2024-06-28 03:02:45,231 INFO L125 PetriNetUnfolderBase]: For 333058/333058 co-relation queries the response was YES. [2024-06-28 03:02:45,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17290 conditions, 2396 events. 1327/2396 cut-off events. For 333058/333058 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 15205 event pairs, 249 based on Foata normal form. 2/2397 useless extension candidates. Maximal degree in co-relation 17062. Up to 2201 conditions per place. [2024-06-28 03:02:45,274 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 509 selfloop transitions, 52 changer transitions 0/563 dead transitions. [2024-06-28 03:02:45,275 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 567 places, 563 transitions, 8215 flow [2024-06-28 03:02:45,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:02:45,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:02:45,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-28 03:02:45,276 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-28 03:02:45,276 INFO L175 Difference]: Start difference. First operand has 557 places, 544 transitions, 6974 flow. Second operand 11 states and 132 transitions. [2024-06-28 03:02:45,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 567 places, 563 transitions, 8215 flow [2024-06-28 03:02:47,188 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 557 places, 563 transitions, 8049 flow, removed 29 selfloop flow, removed 10 redundant places. [2024-06-28 03:02:47,193 INFO L231 Difference]: Finished difference. Result has 558 places, 547 transitions, 6993 flow [2024-06-28 03:02:47,194 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6808, PETRI_DIFFERENCE_MINUEND_PLACES=547, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=544, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=494, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6993, PETRI_PLACES=558, PETRI_TRANSITIONS=547} [2024-06-28 03:02:47,194 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 527 predicate places. [2024-06-28 03:02:47,194 INFO L495 AbstractCegarLoop]: Abstraction has has 558 places, 547 transitions, 6993 flow [2024-06-28 03:02:47,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:02:47,194 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:02:47,194 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:02:47,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182 [2024-06-28 03:02:47,195 INFO L420 AbstractCegarLoop]: === Iteration 184 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:02:47,195 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:02:47,195 INFO L85 PathProgramCache]: Analyzing trace with hash 2005979278, now seen corresponding path program 21 times [2024-06-28 03:02:47,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:02:47,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767039229] [2024-06-28 03:02:47,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:02:47,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:02:47,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:02:48,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:02:48,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:02:48,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767039229] [2024-06-28 03:02:48,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767039229] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:02:48,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:02:48,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:02:48,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947854960] [2024-06-28 03:02:48,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:02:48,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:02:48,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:02:48,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:02:48,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:02:48,511 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 03:02:48,511 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 558 places, 547 transitions, 6993 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:02:48,511 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:02:48,511 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 03:02:48,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:02:49,424 INFO L124 PetriNetUnfolderBase]: 1331/2404 cut-off events. [2024-06-28 03:02:49,424 INFO L125 PetriNetUnfolderBase]: For 335875/335875 co-relation queries the response was YES. [2024-06-28 03:02:49,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17323 conditions, 2404 events. 1331/2404 cut-off events. For 335875/335875 co-relation queries the response was YES. Maximal size of possible extension queue 258. Compared 15240 event pairs, 261 based on Foata normal form. 2/2405 useless extension candidates. Maximal degree in co-relation 17094. Up to 2329 conditions per place. [2024-06-28 03:02:49,476 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 535 selfloop transitions, 25 changer transitions 0/562 dead transitions. [2024-06-28 03:02:49,476 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 568 places, 562 transitions, 8193 flow [2024-06-28 03:02:49,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:02:49,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:02:49,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-28 03:02:49,493 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3465909090909091 [2024-06-28 03:02:49,493 INFO L175 Difference]: Start difference. First operand has 558 places, 547 transitions, 6993 flow. Second operand 11 states and 122 transitions. [2024-06-28 03:02:49,493 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 568 places, 562 transitions, 8193 flow [2024-06-28 03:02:51,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 561 places, 562 transitions, 8060 flow, removed 20 selfloop flow, removed 7 redundant places. [2024-06-28 03:02:51,473 INFO L231 Difference]: Finished difference. Result has 562 places, 548 transitions, 6960 flow [2024-06-28 03:02:51,473 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6860, PETRI_DIFFERENCE_MINUEND_PLACES=551, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=547, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=522, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6960, PETRI_PLACES=562, PETRI_TRANSITIONS=548} [2024-06-28 03:02:51,473 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 531 predicate places. [2024-06-28 03:02:51,474 INFO L495 AbstractCegarLoop]: Abstraction has has 562 places, 548 transitions, 6960 flow [2024-06-28 03:02:51,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:02:51,474 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:02:51,474 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:02:51,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183 [2024-06-28 03:02:51,474 INFO L420 AbstractCegarLoop]: === Iteration 185 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:02:51,474 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:02:51,474 INFO L85 PathProgramCache]: Analyzing trace with hash -1646154682, now seen corresponding path program 22 times [2024-06-28 03:02:51,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:02:51,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926952453] [2024-06-28 03:02:51,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:02:51,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:02:51,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:02:52,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:02:52,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:02:52,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926952453] [2024-06-28 03:02:52,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926952453] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:02:52,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:02:52,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:02:52,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281588715] [2024-06-28 03:02:52,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:02:52,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:02:52,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:02:52,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:02:52,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:02:52,802 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 03:02:52,802 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 562 places, 548 transitions, 6960 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:02:52,802 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:02:52,802 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 03:02:52,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:02:53,645 INFO L124 PetriNetUnfolderBase]: 1342/2425 cut-off events. [2024-06-28 03:02:53,646 INFO L125 PetriNetUnfolderBase]: For 373159/373159 co-relation queries the response was YES. [2024-06-28 03:02:53,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17838 conditions, 2425 events. 1342/2425 cut-off events. For 373159/373159 co-relation queries the response was YES. Maximal size of possible extension queue 259. Compared 15408 event pairs, 256 based on Foata normal form. 2/2426 useless extension candidates. Maximal degree in co-relation 17608. Up to 2232 conditions per place. [2024-06-28 03:02:53,684 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 516 selfloop transitions, 49 changer transitions 0/567 dead transitions. [2024-06-28 03:02:53,684 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 572 places, 567 transitions, 8588 flow [2024-06-28 03:02:53,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:02:53,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:02:53,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-28 03:02:53,685 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-28 03:02:53,685 INFO L175 Difference]: Start difference. First operand has 562 places, 548 transitions, 6960 flow. Second operand 11 states and 132 transitions. [2024-06-28 03:02:53,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 572 places, 567 transitions, 8588 flow [2024-06-28 03:02:55,904 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 563 places, 567 transitions, 8491 flow, removed 22 selfloop flow, removed 9 redundant places. [2024-06-28 03:02:55,911 INFO L231 Difference]: Finished difference. Result has 564 places, 550 transitions, 7059 flow [2024-06-28 03:02:55,911 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6863, PETRI_DIFFERENCE_MINUEND_PLACES=553, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=548, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=500, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7059, PETRI_PLACES=564, PETRI_TRANSITIONS=550} [2024-06-28 03:02:55,911 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 533 predicate places. [2024-06-28 03:02:55,911 INFO L495 AbstractCegarLoop]: Abstraction has has 564 places, 550 transitions, 7059 flow [2024-06-28 03:02:55,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:02:55,912 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:02:55,912 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:02:55,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184 [2024-06-28 03:02:55,912 INFO L420 AbstractCegarLoop]: === Iteration 186 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:02:55,912 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:02:55,913 INFO L85 PathProgramCache]: Analyzing trace with hash -1071258768, now seen corresponding path program 23 times [2024-06-28 03:02:55,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:02:55,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026854422] [2024-06-28 03:02:55,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:02:55,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:02:55,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:02:56,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:02:56,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:02:56,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026854422] [2024-06-28 03:02:56,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026854422] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:02:56,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:02:56,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:02:56,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853693213] [2024-06-28 03:02:56,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:02:56,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:02:56,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:02:56,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:02:56,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:02:57,017 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 03:02:57,017 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 564 places, 550 transitions, 7059 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:02:57,017 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:02:57,017 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 03:02:57,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:02:57,905 INFO L124 PetriNetUnfolderBase]: 1360/2455 cut-off events. [2024-06-28 03:02:57,905 INFO L125 PetriNetUnfolderBase]: For 381141/381141 co-relation queries the response was YES. [2024-06-28 03:02:57,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18241 conditions, 2455 events. 1360/2455 cut-off events. For 381141/381141 co-relation queries the response was YES. Maximal size of possible extension queue 265. Compared 15631 event pairs, 260 based on Foata normal form. 2/2456 useless extension candidates. Maximal degree in co-relation 18010. Up to 2191 conditions per place. [2024-06-28 03:02:57,945 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 515 selfloop transitions, 57 changer transitions 0/574 dead transitions. [2024-06-28 03:02:57,946 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 575 places, 574 transitions, 8467 flow [2024-06-28 03:02:57,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:02:57,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:02:57,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 146 transitions. [2024-06-28 03:02:57,947 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3802083333333333 [2024-06-28 03:02:57,947 INFO L175 Difference]: Start difference. First operand has 564 places, 550 transitions, 7059 flow. Second operand 12 states and 146 transitions. [2024-06-28 03:02:57,947 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 575 places, 574 transitions, 8467 flow [2024-06-28 03:03:00,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 568 places, 574 transitions, 8359 flow, removed 26 selfloop flow, removed 7 redundant places. [2024-06-28 03:03:00,036 INFO L231 Difference]: Finished difference. Result has 569 places, 556 transitions, 7286 flow [2024-06-28 03:03:00,036 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6951, PETRI_DIFFERENCE_MINUEND_PLACES=557, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=550, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=497, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7286, PETRI_PLACES=569, PETRI_TRANSITIONS=556} [2024-06-28 03:03:00,036 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 538 predicate places. [2024-06-28 03:03:00,037 INFO L495 AbstractCegarLoop]: Abstraction has has 569 places, 556 transitions, 7286 flow [2024-06-28 03:03:00,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:00,037 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:03:00,037 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:03:00,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185 [2024-06-28 03:03:00,037 INFO L420 AbstractCegarLoop]: === Iteration 187 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:03:00,037 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:03:00,037 INFO L85 PathProgramCache]: Analyzing trace with hash 41392498, now seen corresponding path program 23 times [2024-06-28 03:03:00,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:03:00,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462798289] [2024-06-28 03:03:00,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:03:00,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:03:00,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:03:00,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:03:00,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:03:00,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462798289] [2024-06-28 03:03:00,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462798289] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:03:00,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:03:00,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:03:00,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667520772] [2024-06-28 03:03:00,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:03:00,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:03:00,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:03:00,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:03:00,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:03:00,995 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 03:03:00,996 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 569 places, 556 transitions, 7286 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:00,996 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:03:00,996 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 03:03:00,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:03:01,791 INFO L124 PetriNetUnfolderBase]: 1357/2450 cut-off events. [2024-06-28 03:03:01,791 INFO L125 PetriNetUnfolderBase]: For 350375/350375 co-relation queries the response was YES. [2024-06-28 03:03:01,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17875 conditions, 2450 events. 1357/2450 cut-off events. For 350375/350375 co-relation queries the response was YES. Maximal size of possible extension queue 265. Compared 15602 event pairs, 257 based on Foata normal form. 2/2451 useless extension candidates. Maximal degree in co-relation 17642. Up to 2280 conditions per place. [2024-06-28 03:03:01,831 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 522 selfloop transitions, 48 changer transitions 0/572 dead transitions. [2024-06-28 03:03:01,831 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 579 places, 572 transitions, 8470 flow [2024-06-28 03:03:01,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:03:01,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:03:01,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-28 03:03:01,832 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3693181818181818 [2024-06-28 03:03:01,833 INFO L175 Difference]: Start difference. First operand has 569 places, 556 transitions, 7286 flow. Second operand 11 states and 130 transitions. [2024-06-28 03:03:01,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 579 places, 572 transitions, 8470 flow [2024-06-28 03:03:03,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 572 places, 572 transitions, 8190 flow, removed 95 selfloop flow, removed 7 redundant places. [2024-06-28 03:03:03,843 INFO L231 Difference]: Finished difference. Result has 573 places, 556 transitions, 7106 flow [2024-06-28 03:03:03,844 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7006, PETRI_DIFFERENCE_MINUEND_PLACES=562, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=556, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=508, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7106, PETRI_PLACES=573, PETRI_TRANSITIONS=556} [2024-06-28 03:03:03,844 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 542 predicate places. [2024-06-28 03:03:03,844 INFO L495 AbstractCegarLoop]: Abstraction has has 573 places, 556 transitions, 7106 flow [2024-06-28 03:03:03,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:03,844 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:03:03,844 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:03:03,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186 [2024-06-28 03:03:03,845 INFO L420 AbstractCegarLoop]: === Iteration 188 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:03:03,845 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:03:03,845 INFO L85 PathProgramCache]: Analyzing trace with hash -92841352, now seen corresponding path program 24 times [2024-06-28 03:03:03,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:03:03,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368340918] [2024-06-28 03:03:03,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:03:03,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:03:03,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:03:04,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:03:04,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:03:04,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368340918] [2024-06-28 03:03:04,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368340918] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:03:04,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:03:04,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:03:04,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532224883] [2024-06-28 03:03:04,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:03:04,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:03:04,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:03:04,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:03:04,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:03:05,068 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 03:03:05,068 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 573 places, 556 transitions, 7106 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:05,069 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:03:05,069 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 03:03:05,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:03:05,964 INFO L124 PetriNetUnfolderBase]: 1369/2470 cut-off events. [2024-06-28 03:03:05,964 INFO L125 PetriNetUnfolderBase]: For 354283/354283 co-relation queries the response was YES. [2024-06-28 03:03:05,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17920 conditions, 2470 events. 1369/2470 cut-off events. For 354283/354283 co-relation queries the response was YES. Maximal size of possible extension queue 265. Compared 15732 event pairs, 251 based on Foata normal form. 2/2471 useless extension candidates. Maximal degree in co-relation 17686. Up to 2202 conditions per place. [2024-06-28 03:03:06,006 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 514 selfloop transitions, 62 changer transitions 0/578 dead transitions. [2024-06-28 03:03:06,007 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 584 places, 578 transitions, 8498 flow [2024-06-28 03:03:06,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:03:06,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:03:06,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 144 transitions. [2024-06-28 03:03:06,008 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-28 03:03:06,008 INFO L175 Difference]: Start difference. First operand has 573 places, 556 transitions, 7106 flow. Second operand 12 states and 144 transitions. [2024-06-28 03:03:06,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 584 places, 578 transitions, 8498 flow [2024-06-28 03:03:08,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 573 places, 578 transitions, 8383 flow, removed 1 selfloop flow, removed 11 redundant places. [2024-06-28 03:03:08,182 INFO L231 Difference]: Finished difference. Result has 574 places, 560 transitions, 7312 flow [2024-06-28 03:03:08,183 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6991, PETRI_DIFFERENCE_MINUEND_PLACES=562, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=556, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=496, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7312, PETRI_PLACES=574, PETRI_TRANSITIONS=560} [2024-06-28 03:03:08,183 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 543 predicate places. [2024-06-28 03:03:08,186 INFO L495 AbstractCegarLoop]: Abstraction has has 574 places, 560 transitions, 7312 flow [2024-06-28 03:03:08,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:08,186 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:03:08,186 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:03:08,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187 [2024-06-28 03:03:08,186 INFO L420 AbstractCegarLoop]: === Iteration 189 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:03:08,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:03:08,187 INFO L85 PathProgramCache]: Analyzing trace with hash 1432367336, now seen corresponding path program 24 times [2024-06-28 03:03:08,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:03:08,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810718635] [2024-06-28 03:03:08,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:03:08,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:03:08,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:03:09,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:03:09,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:03:09,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810718635] [2024-06-28 03:03:09,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810718635] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:03:09,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:03:09,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:03:09,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673011756] [2024-06-28 03:03:09,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:03:09,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:03:09,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:03:09,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:03:09,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:03:09,145 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 03:03:09,146 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 574 places, 560 transitions, 7312 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:09,146 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:03:09,146 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 03:03:09,146 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:03:09,905 INFO L124 PetriNetUnfolderBase]: 1373/2478 cut-off events. [2024-06-28 03:03:09,905 INFO L125 PetriNetUnfolderBase]: For 358407/358407 co-relation queries the response was YES. [2024-06-28 03:03:09,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18086 conditions, 2478 events. 1373/2478 cut-off events. For 358407/358407 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 15815 event pairs, 251 based on Foata normal form. 2/2479 useless extension candidates. Maximal degree in co-relation 17851. Up to 2308 conditions per place. [2024-06-28 03:03:09,944 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 519 selfloop transitions, 55 changer transitions 0/576 dead transitions. [2024-06-28 03:03:09,944 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 584 places, 576 transitions, 8548 flow [2024-06-28 03:03:09,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:03:09,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:03:09,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-28 03:03:09,945 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35795454545454547 [2024-06-28 03:03:09,946 INFO L175 Difference]: Start difference. First operand has 574 places, 560 transitions, 7312 flow. Second operand 11 states and 126 transitions. [2024-06-28 03:03:09,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 584 places, 576 transitions, 8548 flow [2024-06-28 03:03:12,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 575 places, 576 transitions, 8273 flow, removed 78 selfloop flow, removed 9 redundant places. [2024-06-28 03:03:12,060 INFO L231 Difference]: Finished difference. Result has 576 places, 561 transitions, 7201 flow [2024-06-28 03:03:12,061 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7037, PETRI_DIFFERENCE_MINUEND_PLACES=565, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=560, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=505, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7201, PETRI_PLACES=576, PETRI_TRANSITIONS=561} [2024-06-28 03:03:12,061 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 545 predicate places. [2024-06-28 03:03:12,061 INFO L495 AbstractCegarLoop]: Abstraction has has 576 places, 561 transitions, 7201 flow [2024-06-28 03:03:12,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:12,061 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:03:12,061 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:03:12,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188 [2024-06-28 03:03:12,062 INFO L420 AbstractCegarLoop]: === Iteration 190 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:03:12,062 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:03:12,062 INFO L85 PathProgramCache]: Analyzing trace with hash 41384562, now seen corresponding path program 25 times [2024-06-28 03:03:12,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:03:12,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938651642] [2024-06-28 03:03:12,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:03:12,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:03:12,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:03:13,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:03:13,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:03:13,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938651642] [2024-06-28 03:03:13,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938651642] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:03:13,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:03:13,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:03:13,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901266168] [2024-06-28 03:03:13,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:03:13,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:03:13,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:03:13,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:03:13,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:03:13,187 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 03:03:13,187 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 576 places, 561 transitions, 7201 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:13,187 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:03:13,187 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 03:03:13,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:03:14,073 INFO L124 PetriNetUnfolderBase]: 1379/2488 cut-off events. [2024-06-28 03:03:14,073 INFO L125 PetriNetUnfolderBase]: For 362873/362873 co-relation queries the response was YES. [2024-06-28 03:03:14,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18139 conditions, 2488 events. 1379/2488 cut-off events. For 362873/362873 co-relation queries the response was YES. Maximal size of possible extension queue 269. Compared 15877 event pairs, 257 based on Foata normal form. 2/2489 useless extension candidates. Maximal degree in co-relation 17903. Up to 2220 conditions per place. [2024-06-28 03:03:14,112 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 519 selfloop transitions, 60 changer transitions 0/581 dead transitions. [2024-06-28 03:03:14,112 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 587 places, 581 transitions, 8575 flow [2024-06-28 03:03:14,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:03:14,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:03:14,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 145 transitions. [2024-06-28 03:03:14,113 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3776041666666667 [2024-06-28 03:03:14,113 INFO L175 Difference]: Start difference. First operand has 576 places, 561 transitions, 7201 flow. Second operand 12 states and 145 transitions. [2024-06-28 03:03:14,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 587 places, 581 transitions, 8575 flow [2024-06-28 03:03:16,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 577 places, 581 transitions, 8398 flow, removed 23 selfloop flow, removed 10 redundant places. [2024-06-28 03:03:16,329 INFO L231 Difference]: Finished difference. Result has 578 places, 563 transitions, 7317 flow [2024-06-28 03:03:16,329 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7024, PETRI_DIFFERENCE_MINUEND_PLACES=566, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=561, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=501, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7317, PETRI_PLACES=578, PETRI_TRANSITIONS=563} [2024-06-28 03:03:16,330 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 547 predicate places. [2024-06-28 03:03:16,330 INFO L495 AbstractCegarLoop]: Abstraction has has 578 places, 563 transitions, 7317 flow [2024-06-28 03:03:16,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:16,330 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:03:16,330 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:03:16,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable189 [2024-06-28 03:03:16,330 INFO L420 AbstractCegarLoop]: === Iteration 191 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:03:16,331 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:03:16,331 INFO L85 PathProgramCache]: Analyzing trace with hash -92846932, now seen corresponding path program 26 times [2024-06-28 03:03:16,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:03:16,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609711346] [2024-06-28 03:03:16,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:03:16,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:03:16,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:03:17,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:03:17,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:03:17,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609711346] [2024-06-28 03:03:17,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609711346] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:03:17,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:03:17,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:03:17,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040871163] [2024-06-28 03:03:17,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:03:17,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:03:17,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:03:17,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:03:17,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:03:17,321 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 03:03:17,321 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 578 places, 563 transitions, 7317 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:17,321 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:03:17,321 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 03:03:17,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:03:18,308 INFO L124 PetriNetUnfolderBase]: 1395/2514 cut-off events. [2024-06-28 03:03:18,309 INFO L125 PetriNetUnfolderBase]: For 410808/410808 co-relation queries the response was YES. [2024-06-28 03:03:18,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19151 conditions, 2514 events. 1395/2514 cut-off events. For 410808/410808 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 16062 event pairs, 253 based on Foata normal form. 2/2515 useless extension candidates. Maximal degree in co-relation 18914. Up to 2210 conditions per place. [2024-06-28 03:03:18,348 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 514 selfloop transitions, 72 changer transitions 0/588 dead transitions. [2024-06-28 03:03:18,349 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 590 places, 588 transitions, 9259 flow [2024-06-28 03:03:18,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 03:03:18,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 03:03:18,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 156 transitions. [2024-06-28 03:03:18,350 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-28 03:03:18,350 INFO L175 Difference]: Start difference. First operand has 578 places, 563 transitions, 7317 flow. Second operand 13 states and 156 transitions. [2024-06-28 03:03:18,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 590 places, 588 transitions, 9259 flow [2024-06-28 03:03:20,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 581 places, 588 transitions, 8987 flow, removed 80 selfloop flow, removed 9 redundant places. [2024-06-28 03:03:20,742 INFO L231 Difference]: Finished difference. Result has 582 places, 567 transitions, 7534 flow [2024-06-28 03:03:20,745 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7045, PETRI_DIFFERENCE_MINUEND_PLACES=569, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=563, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=493, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=7534, PETRI_PLACES=582, PETRI_TRANSITIONS=567} [2024-06-28 03:03:20,746 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 551 predicate places. [2024-06-28 03:03:20,746 INFO L495 AbstractCegarLoop]: Abstraction has has 582 places, 567 transitions, 7534 flow [2024-06-28 03:03:20,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:20,746 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:03:20,746 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:03:20,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190 [2024-06-28 03:03:20,748 INFO L420 AbstractCegarLoop]: === Iteration 192 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:03:20,748 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:03:20,750 INFO L85 PathProgramCache]: Analyzing trace with hash 1626298810, now seen corresponding path program 27 times [2024-06-28 03:03:20,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:03:20,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354976868] [2024-06-28 03:03:20,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:03:20,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:03:20,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:03:21,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:03:21,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:03:21,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354976868] [2024-06-28 03:03:21,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354976868] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:03:21,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:03:21,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:03:21,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540771775] [2024-06-28 03:03:21,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:03:21,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:03:21,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:03:21,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:03:21,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:03:21,844 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 03:03:21,844 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 582 places, 567 transitions, 7534 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:21,844 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:03:21,844 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 03:03:21,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:03:22,788 INFO L124 PetriNetUnfolderBase]: 1413/2544 cut-off events. [2024-06-28 03:03:22,789 INFO L125 PetriNetUnfolderBase]: For 416596/416596 co-relation queries the response was YES. [2024-06-28 03:03:22,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19432 conditions, 2544 events. 1413/2544 cut-off events. For 416596/416596 co-relation queries the response was YES. Maximal size of possible extension queue 273. Compared 16243 event pairs, 254 based on Foata normal form. 2/2545 useless extension candidates. Maximal degree in co-relation 19194. Up to 2268 conditions per place. [2024-06-28 03:03:22,833 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 524 selfloop transitions, 65 changer transitions 0/591 dead transitions. [2024-06-28 03:03:22,833 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 593 places, 591 transitions, 9000 flow [2024-06-28 03:03:22,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:03:22,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:03:22,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 144 transitions. [2024-06-28 03:03:22,834 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-28 03:03:22,835 INFO L175 Difference]: Start difference. First operand has 582 places, 567 transitions, 7534 flow. Second operand 12 states and 144 transitions. [2024-06-28 03:03:22,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 593 places, 591 transitions, 9000 flow [2024-06-28 03:03:24,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 584 places, 591 transitions, 8728 flow, removed 95 selfloop flow, removed 9 redundant places. [2024-06-28 03:03:24,966 INFO L231 Difference]: Finished difference. Result has 585 places, 573 transitions, 7637 flow [2024-06-28 03:03:24,966 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7266, PETRI_DIFFERENCE_MINUEND_PLACES=573, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=567, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=506, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7637, PETRI_PLACES=585, PETRI_TRANSITIONS=573} [2024-06-28 03:03:24,967 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 554 predicate places. [2024-06-28 03:03:24,967 INFO L495 AbstractCegarLoop]: Abstraction has has 585 places, 573 transitions, 7637 flow [2024-06-28 03:03:24,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:24,968 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:03:24,968 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:03:24,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191 [2024-06-28 03:03:24,969 INFO L420 AbstractCegarLoop]: === Iteration 193 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:03:24,969 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:03:24,969 INFO L85 PathProgramCache]: Analyzing trace with hash -2120574020, now seen corresponding path program 28 times [2024-06-28 03:03:24,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:03:24,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596776818] [2024-06-28 03:03:24,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:03:24,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:03:24,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:03:26,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:03:26,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:03:26,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596776818] [2024-06-28 03:03:26,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596776818] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:03:26,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:03:26,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:03:26,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475079110] [2024-06-28 03:03:26,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:03:26,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:03:26,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:03:26,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:03:26,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:03:26,276 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 03:03:26,276 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 585 places, 573 transitions, 7637 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:26,276 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:03:26,276 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 03:03:26,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:03:27,229 INFO L124 PetriNetUnfolderBase]: 1431/2574 cut-off events. [2024-06-28 03:03:27,230 INFO L125 PetriNetUnfolderBase]: For 419047/419047 co-relation queries the response was YES. [2024-06-28 03:03:27,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19729 conditions, 2574 events. 1431/2574 cut-off events. For 419047/419047 co-relation queries the response was YES. Maximal size of possible extension queue 278. Compared 16469 event pairs, 268 based on Foata normal form. 2/2575 useless extension candidates. Maximal degree in co-relation 19489. Up to 2435 conditions per place. [2024-06-28 03:03:27,276 INFO L140 encePairwiseOnDemand]: 18/32 looper letters, 556 selfloop transitions, 38 changer transitions 0/596 dead transitions. [2024-06-28 03:03:27,276 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 596 places, 596 transitions, 9117 flow [2024-06-28 03:03:27,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:03:27,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:03:27,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 137 transitions. [2024-06-28 03:03:27,277 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3567708333333333 [2024-06-28 03:03:27,278 INFO L175 Difference]: Start difference. First operand has 585 places, 573 transitions, 7637 flow. Second operand 12 states and 137 transitions. [2024-06-28 03:03:27,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 596 places, 596 transitions, 9117 flow [2024-06-28 03:03:29,684 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 589 places, 596 transitions, 8827 flow, removed 86 selfloop flow, removed 7 redundant places. [2024-06-28 03:03:29,690 INFO L231 Difference]: Finished difference. Result has 590 places, 579 transitions, 7676 flow [2024-06-28 03:03:29,691 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7355, PETRI_DIFFERENCE_MINUEND_PLACES=578, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=573, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=539, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7676, PETRI_PLACES=590, PETRI_TRANSITIONS=579} [2024-06-28 03:03:29,691 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 559 predicate places. [2024-06-28 03:03:29,691 INFO L495 AbstractCegarLoop]: Abstraction has has 590 places, 579 transitions, 7676 flow [2024-06-28 03:03:29,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:29,691 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:03:29,691 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:03:29,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192 [2024-06-28 03:03:29,692 INFO L420 AbstractCegarLoop]: === Iteration 194 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:03:29,692 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:03:29,692 INFO L85 PathProgramCache]: Analyzing trace with hash -1986273210, now seen corresponding path program 25 times [2024-06-28 03:03:29,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:03:29,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944895389] [2024-06-28 03:03:29,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:03:29,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:03:29,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:03:30,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:03:30,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:03:30,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944895389] [2024-06-28 03:03:30,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944895389] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:03:30,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:03:30,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:03:30,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712232576] [2024-06-28 03:03:30,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:03:30,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:03:30,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:03:30,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:03:30,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:03:30,808 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 03:03:30,808 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 590 places, 579 transitions, 7676 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:30,808 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:03:30,808 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 03:03:30,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:03:31,537 INFO L124 PetriNetUnfolderBase]: 1442/2595 cut-off events. [2024-06-28 03:03:31,537 INFO L125 PetriNetUnfolderBase]: For 456738/456738 co-relation queries the response was YES. [2024-06-28 03:03:31,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20111 conditions, 2595 events. 1442/2595 cut-off events. For 456738/456738 co-relation queries the response was YES. Maximal size of possible extension queue 280. Compared 16627 event pairs, 276 based on Foata normal form. 2/2596 useless extension candidates. Maximal degree in co-relation 19870. Up to 2497 conditions per place. [2024-06-28 03:03:31,583 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 568 selfloop transitions, 27 changer transitions 0/597 dead transitions. [2024-06-28 03:03:31,583 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 600 places, 597 transitions, 9386 flow [2024-06-28 03:03:31,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:03:31,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:03:31,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-28 03:03:31,584 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3522727272727273 [2024-06-28 03:03:31,584 INFO L175 Difference]: Start difference. First operand has 590 places, 579 transitions, 7676 flow. Second operand 11 states and 124 transitions. [2024-06-28 03:03:31,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 600 places, 597 transitions, 9386 flow [2024-06-28 03:03:34,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 592 places, 597 transitions, 9095 flow, removed 88 selfloop flow, removed 8 redundant places. [2024-06-28 03:03:34,411 INFO L231 Difference]: Finished difference. Result has 593 places, 581 transitions, 7545 flow [2024-06-28 03:03:34,412 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7385, PETRI_DIFFERENCE_MINUEND_PLACES=582, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=579, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=553, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7545, PETRI_PLACES=593, PETRI_TRANSITIONS=581} [2024-06-28 03:03:34,412 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 562 predicate places. [2024-06-28 03:03:34,412 INFO L495 AbstractCegarLoop]: Abstraction has has 593 places, 581 transitions, 7545 flow [2024-06-28 03:03:34,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:34,412 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:03:34,412 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:03:34,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable193 [2024-06-28 03:03:34,413 INFO L420 AbstractCegarLoop]: === Iteration 195 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:03:34,413 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:03:34,413 INFO L85 PathProgramCache]: Analyzing trace with hash 976552364, now seen corresponding path program 26 times [2024-06-28 03:03:34,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:03:34,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688008409] [2024-06-28 03:03:34,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:03:34,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:03:34,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:03:35,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:03:35,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:03:35,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688008409] [2024-06-28 03:03:35,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688008409] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:03:35,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:03:35,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:03:35,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683451031] [2024-06-28 03:03:35,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:03:35,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:03:35,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:03:35,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:03:35,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:03:35,590 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 03:03:35,590 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 593 places, 581 transitions, 7545 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:35,590 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:03:35,590 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 03:03:35,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:03:36,393 INFO L124 PetriNetUnfolderBase]: 1446/2603 cut-off events. [2024-06-28 03:03:36,393 INFO L125 PetriNetUnfolderBase]: For 456036/456036 co-relation queries the response was YES. [2024-06-28 03:03:36,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19977 conditions, 2603 events. 1446/2603 cut-off events. For 456036/456036 co-relation queries the response was YES. Maximal size of possible extension queue 281. Compared 16679 event pairs, 285 based on Foata normal form. 2/2604 useless extension candidates. Maximal degree in co-relation 19735. Up to 2540 conditions per place. [2024-06-28 03:03:36,439 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 569 selfloop transitions, 25 changer transitions 0/596 dead transitions. [2024-06-28 03:03:36,439 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 603 places, 596 transitions, 8821 flow [2024-06-28 03:03:36,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:03:36,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:03:36,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 119 transitions. [2024-06-28 03:03:36,440 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3380681818181818 [2024-06-28 03:03:36,440 INFO L175 Difference]: Start difference. First operand has 593 places, 581 transitions, 7545 flow. Second operand 11 states and 119 transitions. [2024-06-28 03:03:36,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 603 places, 596 transitions, 8821 flow [2024-06-28 03:03:38,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 596 places, 596 transitions, 8732 flow, removed 29 selfloop flow, removed 7 redundant places. [2024-06-28 03:03:38,990 INFO L231 Difference]: Finished difference. Result has 597 places, 582 transitions, 7565 flow [2024-06-28 03:03:38,990 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7456, PETRI_DIFFERENCE_MINUEND_PLACES=586, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=581, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=556, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7565, PETRI_PLACES=597, PETRI_TRANSITIONS=582} [2024-06-28 03:03:38,990 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 566 predicate places. [2024-06-28 03:03:38,990 INFO L495 AbstractCegarLoop]: Abstraction has has 597 places, 582 transitions, 7565 flow [2024-06-28 03:03:38,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:38,991 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:03:38,991 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:03:38,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable194 [2024-06-28 03:03:38,991 INFO L420 AbstractCegarLoop]: === Iteration 196 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:03:38,991 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:03:38,991 INFO L85 PathProgramCache]: Analyzing trace with hash -2127715924, now seen corresponding path program 27 times [2024-06-28 03:03:38,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:03:38,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029646322] [2024-06-28 03:03:38,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:03:38,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:03:38,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:03:39,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:03:39,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:03:39,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029646322] [2024-06-28 03:03:39,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029646322] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:03:39,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:03:39,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:03:39,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229119] [2024-06-28 03:03:39,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:03:39,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:03:39,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:03:39,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:03:39,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:03:40,087 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 03:03:40,087 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 597 places, 582 transitions, 7565 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:40,087 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:03:40,087 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 03:03:40,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:03:40,837 INFO L124 PetriNetUnfolderBase]: 1443/2598 cut-off events. [2024-06-28 03:03:40,837 INFO L125 PetriNetUnfolderBase]: For 423621/423621 co-relation queries the response was YES. [2024-06-28 03:03:40,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19490 conditions, 2598 events. 1443/2598 cut-off events. For 423621/423621 co-relation queries the response was YES. Maximal size of possible extension queue 281. Compared 16691 event pairs, 277 based on Foata normal form. 2/2599 useless extension candidates. Maximal degree in co-relation 19246. Up to 2523 conditions per place. [2024-06-28 03:03:40,885 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 569 selfloop transitions, 26 changer transitions 0/597 dead transitions. [2024-06-28 03:03:40,885 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 607 places, 597 transitions, 8795 flow [2024-06-28 03:03:40,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:03:40,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:03:40,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-28 03:03:40,886 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3465909090909091 [2024-06-28 03:03:40,886 INFO L175 Difference]: Start difference. First operand has 597 places, 582 transitions, 7565 flow. Second operand 11 states and 122 transitions. [2024-06-28 03:03:40,886 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 607 places, 597 transitions, 8795 flow [2024-06-28 03:03:43,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 598 places, 597 transitions, 8662 flow, removed 43 selfloop flow, removed 9 redundant places. [2024-06-28 03:03:43,617 INFO L231 Difference]: Finished difference. Result has 599 places, 582 transitions, 7488 flow [2024-06-28 03:03:43,618 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7432, PETRI_DIFFERENCE_MINUEND_PLACES=588, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=582, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=556, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7488, PETRI_PLACES=599, PETRI_TRANSITIONS=582} [2024-06-28 03:03:43,618 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 568 predicate places. [2024-06-28 03:03:43,618 INFO L495 AbstractCegarLoop]: Abstraction has has 599 places, 582 transitions, 7488 flow [2024-06-28 03:03:43,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:43,618 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:03:43,618 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:03:43,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195 [2024-06-28 03:03:43,619 INFO L420 AbstractCegarLoop]: === Iteration 197 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:03:43,619 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:03:43,619 INFO L85 PathProgramCache]: Analyzing trace with hash -1390254270, now seen corresponding path program 28 times [2024-06-28 03:03:43,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:03:43,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796454004] [2024-06-28 03:03:43,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:03:43,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:03:43,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:03:44,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:03:44,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:03:44,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796454004] [2024-06-28 03:03:44,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796454004] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:03:44,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:03:44,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:03:44,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83012628] [2024-06-28 03:03:44,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:03:44,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:03:44,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:03:44,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:03:44,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:03:44,715 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 03:03:44,716 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 599 places, 582 transitions, 7488 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:44,716 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:03:44,716 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 03:03:44,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:03:45,461 INFO L124 PetriNetUnfolderBase]: 1447/2606 cut-off events. [2024-06-28 03:03:45,461 INFO L125 PetriNetUnfolderBase]: For 426864/426864 co-relation queries the response was YES. [2024-06-28 03:03:45,501 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19475 conditions, 2606 events. 1447/2606 cut-off events. For 426864/426864 co-relation queries the response was YES. Maximal size of possible extension queue 282. Compared 16732 event pairs, 285 based on Foata normal form. 2/2607 useless extension candidates. Maximal degree in co-relation 19230. Up to 2552 conditions per place. [2024-06-28 03:03:45,509 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 579 selfloop transitions, 16 changer transitions 0/597 dead transitions. [2024-06-28 03:03:45,510 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 609 places, 597 transitions, 8762 flow [2024-06-28 03:03:45,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:03:45,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:03:45,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 115 transitions. [2024-06-28 03:03:45,511 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32670454545454547 [2024-06-28 03:03:45,511 INFO L175 Difference]: Start difference. First operand has 599 places, 582 transitions, 7488 flow. Second operand 11 states and 115 transitions. [2024-06-28 03:03:45,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 609 places, 597 transitions, 8762 flow [2024-06-28 03:03:48,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 598 places, 597 transitions, 8691 flow, removed 1 selfloop flow, removed 11 redundant places. [2024-06-28 03:03:48,248 INFO L231 Difference]: Finished difference. Result has 599 places, 583 transitions, 7509 flow [2024-06-28 03:03:48,249 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7417, PETRI_DIFFERENCE_MINUEND_PLACES=588, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=582, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=566, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7509, PETRI_PLACES=599, PETRI_TRANSITIONS=583} [2024-06-28 03:03:48,249 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 568 predicate places. [2024-06-28 03:03:48,249 INFO L495 AbstractCegarLoop]: Abstraction has has 599 places, 583 transitions, 7509 flow [2024-06-28 03:03:48,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:48,249 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:03:48,249 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:03:48,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196 [2024-06-28 03:03:48,250 INFO L420 AbstractCegarLoop]: === Iteration 198 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:03:48,250 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:03:48,250 INFO L85 PathProgramCache]: Analyzing trace with hash 976561664, now seen corresponding path program 29 times [2024-06-28 03:03:48,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:03:48,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188432633] [2024-06-28 03:03:48,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:03:48,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:03:48,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:03:49,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:03:49,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:03:49,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188432633] [2024-06-28 03:03:49,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188432633] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:03:49,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:03:49,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:03:49,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024983692] [2024-06-28 03:03:49,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:03:49,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:03:49,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:03:49,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:03:49,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:03:49,339 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 03:03:49,339 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 599 places, 583 transitions, 7509 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:49,339 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:03:49,339 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 03:03:49,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:03:50,185 INFO L124 PetriNetUnfolderBase]: 1451/2614 cut-off events. [2024-06-28 03:03:50,185 INFO L125 PetriNetUnfolderBase]: For 432639/432639 co-relation queries the response was YES. [2024-06-28 03:03:50,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19584 conditions, 2614 events. 1451/2614 cut-off events. For 432639/432639 co-relation queries the response was YES. Maximal size of possible extension queue 283. Compared 16825 event pairs, 284 based on Foata normal form. 2/2615 useless extension candidates. Maximal degree in co-relation 19338. Up to 2535 conditions per place. [2024-06-28 03:03:50,234 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 571 selfloop transitions, 25 changer transitions 0/598 dead transitions. [2024-06-28 03:03:50,234 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 609 places, 598 transitions, 8791 flow [2024-06-28 03:03:50,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:03:50,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:03:50,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-28 03:03:50,253 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3409090909090909 [2024-06-28 03:03:50,253 INFO L175 Difference]: Start difference. First operand has 599 places, 583 transitions, 7509 flow. Second operand 11 states and 120 transitions. [2024-06-28 03:03:50,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 609 places, 598 transitions, 8791 flow [2024-06-28 03:03:52,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 600 places, 598 transitions, 8709 flow, removed 26 selfloop flow, removed 9 redundant places. [2024-06-28 03:03:52,967 INFO L231 Difference]: Finished difference. Result has 601 places, 584 transitions, 7539 flow [2024-06-28 03:03:52,968 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7427, PETRI_DIFFERENCE_MINUEND_PLACES=590, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=583, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=558, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7539, PETRI_PLACES=601, PETRI_TRANSITIONS=584} [2024-06-28 03:03:52,968 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 570 predicate places. [2024-06-28 03:03:52,968 INFO L495 AbstractCegarLoop]: Abstraction has has 601 places, 584 transitions, 7539 flow [2024-06-28 03:03:52,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:52,969 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:03:52,969 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:03:52,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197 [2024-06-28 03:03:52,969 INFO L420 AbstractCegarLoop]: === Iteration 199 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:03:52,969 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:03:52,969 INFO L85 PathProgramCache]: Analyzing trace with hash 173392104, now seen corresponding path program 30 times [2024-06-28 03:03:52,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:03:52,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637216799] [2024-06-28 03:03:52,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:03:52,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:03:52,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:03:54,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:03:54,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:03:54,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637216799] [2024-06-28 03:03:54,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637216799] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:03:54,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:03:54,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:03:54,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120883722] [2024-06-28 03:03:54,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:03:54,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:03:54,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:03:54,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:03:54,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:03:54,244 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 03:03:54,245 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 601 places, 584 transitions, 7539 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:54,245 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:03:54,245 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 03:03:54,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:03:55,076 INFO L124 PetriNetUnfolderBase]: 1462/2635 cut-off events. [2024-06-28 03:03:55,076 INFO L125 PetriNetUnfolderBase]: For 475731/475731 co-relation queries the response was YES. [2024-06-28 03:03:55,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20247 conditions, 2635 events. 1462/2635 cut-off events. For 475731/475731 co-relation queries the response was YES. Maximal size of possible extension queue 285. Compared 17003 event pairs, 277 based on Foata normal form. 2/2636 useless extension candidates. Maximal degree in co-relation 20000. Up to 2347 conditions per place. [2024-06-28 03:03:55,124 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 537 selfloop transitions, 63 changer transitions 0/602 dead transitions. [2024-06-28 03:03:55,125 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 611 places, 602 transitions, 9283 flow [2024-06-28 03:03:55,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:03:55,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:03:55,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-28 03:03:55,125 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3693181818181818 [2024-06-28 03:03:55,126 INFO L175 Difference]: Start difference. First operand has 601 places, 584 transitions, 7539 flow. Second operand 11 states and 130 transitions. [2024-06-28 03:03:55,126 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 611 places, 602 transitions, 9283 flow [2024-06-28 03:03:57,977 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 602 places, 602 transitions, 9181 flow, removed 27 selfloop flow, removed 9 redundant places. [2024-06-28 03:03:57,984 INFO L231 Difference]: Finished difference. Result has 603 places, 586 transitions, 7685 flow [2024-06-28 03:03:57,984 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7437, PETRI_DIFFERENCE_MINUEND_PLACES=592, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=584, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=522, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7685, PETRI_PLACES=603, PETRI_TRANSITIONS=586} [2024-06-28 03:03:57,984 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 572 predicate places. [2024-06-28 03:03:57,984 INFO L495 AbstractCegarLoop]: Abstraction has has 603 places, 586 transitions, 7685 flow [2024-06-28 03:03:57,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:57,985 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:03:57,985 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:03:57,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable198 [2024-06-28 03:03:57,985 INFO L420 AbstractCegarLoop]: === Iteration 200 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:03:57,985 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:03:57,985 INFO L85 PathProgramCache]: Analyzing trace with hash -1993901566, now seen corresponding path program 29 times [2024-06-28 03:03:57,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:03:57,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320759794] [2024-06-28 03:03:57,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:03:57,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:03:57,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:03:58,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:03:58,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:03:58,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320759794] [2024-06-28 03:03:58,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320759794] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:03:58,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:03:58,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:03:58,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542627214] [2024-06-28 03:03:58,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:03:58,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:03:58,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:03:58,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:03:58,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:03:59,109 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 03:03:59,110 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 603 places, 586 transitions, 7685 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:59,110 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:03:59,110 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 03:03:59,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:03:59,958 INFO L124 PetriNetUnfolderBase]: 1474/2655 cut-off events. [2024-06-28 03:03:59,958 INFO L125 PetriNetUnfolderBase]: For 485603/485603 co-relation queries the response was YES. [2024-06-28 03:04:00,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20650 conditions, 2655 events. 1474/2655 cut-off events. For 485603/485603 co-relation queries the response was YES. Maximal size of possible extension queue 288. Compared 17167 event pairs, 285 based on Foata normal form. 2/2656 useless extension candidates. Maximal degree in co-relation 20402. Up to 2545 conditions per place. [2024-06-28 03:04:00,009 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 569 selfloop transitions, 36 changer transitions 0/607 dead transitions. [2024-06-28 03:04:00,009 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 614 places, 607 transitions, 9151 flow [2024-06-28 03:04:00,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:04:00,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:04:00,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 134 transitions. [2024-06-28 03:04:00,010 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3489583333333333 [2024-06-28 03:04:00,010 INFO L175 Difference]: Start difference. First operand has 603 places, 586 transitions, 7685 flow. Second operand 12 states and 134 transitions. [2024-06-28 03:04:00,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 614 places, 607 transitions, 9151 flow [2024-06-28 03:04:02,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 607 places, 607 transitions, 9015 flow, removed 34 selfloop flow, removed 7 redundant places. [2024-06-28 03:04:02,938 INFO L231 Difference]: Finished difference. Result has 608 places, 590 transitions, 7838 flow [2024-06-28 03:04:02,939 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7549, PETRI_DIFFERENCE_MINUEND_PLACES=596, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=586, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=552, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7838, PETRI_PLACES=608, PETRI_TRANSITIONS=590} [2024-06-28 03:04:02,940 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 577 predicate places. [2024-06-28 03:04:02,940 INFO L495 AbstractCegarLoop]: Abstraction has has 608 places, 590 transitions, 7838 flow [2024-06-28 03:04:02,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:02,940 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:04:02,940 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:04:02,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable199 [2024-06-28 03:04:02,940 INFO L420 AbstractCegarLoop]: === Iteration 201 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:04:02,941 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:04:02,941 INFO L85 PathProgramCache]: Analyzing trace with hash 163860968, now seen corresponding path program 30 times [2024-06-28 03:04:02,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:04:02,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694334501] [2024-06-28 03:04:02,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:04:02,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:04:02,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:04:03,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:04:03,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:04:03,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694334501] [2024-06-28 03:04:03,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694334501] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:04:03,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:04:03,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:04:03,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460929116] [2024-06-28 03:04:03,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:04:03,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:04:03,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:04:03,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:04:03,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:04:04,098 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 03:04:04,099 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 608 places, 590 transitions, 7838 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:04,099 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:04:04,099 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 03:04:04,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:04:05,048 INFO L124 PetriNetUnfolderBase]: 1470/2649 cut-off events. [2024-06-28 03:04:05,049 INFO L125 PetriNetUnfolderBase]: For 450574/450574 co-relation queries the response was YES. [2024-06-28 03:04:05,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20096 conditions, 2649 events. 1470/2649 cut-off events. For 450574/450574 co-relation queries the response was YES. Maximal size of possible extension queue 288. Compared 17141 event pairs, 276 based on Foata normal form. 2/2650 useless extension candidates. Maximal degree in co-relation 19846. Up to 2361 conditions per place. [2024-06-28 03:04:05,097 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 530 selfloop transitions, 75 changer transitions 0/607 dead transitions. [2024-06-28 03:04:05,098 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 619 places, 607 transitions, 9096 flow [2024-06-28 03:04:05,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:04:05,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:04:05,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 142 transitions. [2024-06-28 03:04:05,099 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3697916666666667 [2024-06-28 03:04:05,099 INFO L175 Difference]: Start difference. First operand has 608 places, 590 transitions, 7838 flow. Second operand 12 states and 142 transitions. [2024-06-28 03:04:05,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 619 places, 607 transitions, 9096 flow [2024-06-28 03:04:08,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 610 places, 607 transitions, 8731 flow, removed 149 selfloop flow, removed 9 redundant places. [2024-06-28 03:04:08,044 INFO L231 Difference]: Finished difference. Result has 611 places, 590 transitions, 7628 flow [2024-06-28 03:04:08,044 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7473, PETRI_DIFFERENCE_MINUEND_PLACES=599, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=590, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=515, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7628, PETRI_PLACES=611, PETRI_TRANSITIONS=590} [2024-06-28 03:04:08,044 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 580 predicate places. [2024-06-28 03:04:08,044 INFO L495 AbstractCegarLoop]: Abstraction has has 611 places, 590 transitions, 7628 flow [2024-06-28 03:04:08,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:08,045 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:04:08,045 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:04:08,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable200 [2024-06-28 03:04:08,045 INFO L420 AbstractCegarLoop]: === Iteration 202 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:04:08,045 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:04:08,045 INFO L85 PathProgramCache]: Analyzing trace with hash -92847087, now seen corresponding path program 20 times [2024-06-28 03:04:08,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:04:08,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535956301] [2024-06-28 03:04:08,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:04:08,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:04:08,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:04:08,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:04:08,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:04:08,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535956301] [2024-06-28 03:04:08,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535956301] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:04:08,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:04:08,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:04:08,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923110322] [2024-06-28 03:04:08,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:04:08,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:04:08,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:04:08,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:04:08,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:04:08,975 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 03:04:08,976 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 611 places, 590 transitions, 7628 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:08,976 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:04:08,976 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 03:04:08,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:04:09,821 INFO L124 PetriNetUnfolderBase]: 1494/2701 cut-off events. [2024-06-28 03:04:09,821 INFO L125 PetriNetUnfolderBase]: For 676233/676233 co-relation queries the response was YES. [2024-06-28 03:04:09,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20365 conditions, 2701 events. 1494/2701 cut-off events. For 676233/676233 co-relation queries the response was YES. Maximal size of possible extension queue 289. Compared 17483 event pairs, 276 based on Foata normal form. 14/2714 useless extension candidates. Maximal degree in co-relation 20114. Up to 2304 conditions per place. [2024-06-28 03:04:09,872 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 524 selfloop transitions, 61 changer transitions 27/614 dead transitions. [2024-06-28 03:04:09,872 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 622 places, 614 transitions, 9166 flow [2024-06-28 03:04:09,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:04:09,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:04:09,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 149 transitions. [2024-06-28 03:04:09,873 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3880208333333333 [2024-06-28 03:04:09,873 INFO L175 Difference]: Start difference. First operand has 611 places, 590 transitions, 7628 flow. Second operand 12 states and 149 transitions. [2024-06-28 03:04:09,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 622 places, 614 transitions, 9166 flow [2024-06-28 03:04:13,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 610 places, 614 transitions, 8984 flow, removed 12 selfloop flow, removed 12 redundant places. [2024-06-28 03:04:13,013 INFO L231 Difference]: Finished difference. Result has 611 places, 571 transitions, 7424 flow [2024-06-28 03:04:13,014 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7446, PETRI_DIFFERENCE_MINUEND_PLACES=599, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=590, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=529, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7424, PETRI_PLACES=611, PETRI_TRANSITIONS=571} [2024-06-28 03:04:13,014 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 580 predicate places. [2024-06-28 03:04:13,014 INFO L495 AbstractCegarLoop]: Abstraction has has 611 places, 571 transitions, 7424 flow [2024-06-28 03:04:13,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:13,014 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:04:13,014 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:04:13,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable201 [2024-06-28 03:04:13,015 INFO L420 AbstractCegarLoop]: === Iteration 203 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:04:13,015 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:04:13,015 INFO L85 PathProgramCache]: Analyzing trace with hash 1432359400, now seen corresponding path program 31 times [2024-06-28 03:04:13,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:04:13,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089115361] [2024-06-28 03:04:13,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:04:13,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:04:13,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:04:13,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:04:13,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:04:13,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089115361] [2024-06-28 03:04:13,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089115361] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:04:13,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:04:13,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:04:13,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702989462] [2024-06-28 03:04:13,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:04:13,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:04:13,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:04:13,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:04:13,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:04:14,116 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 03:04:14,116 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 611 places, 571 transitions, 7424 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:14,116 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:04:14,116 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 03:04:14,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:04:15,017 INFO L124 PetriNetUnfolderBase]: 1424/2583 cut-off events. [2024-06-28 03:04:15,018 INFO L125 PetriNetUnfolderBase]: For 456529/456529 co-relation queries the response was YES. [2024-06-28 03:04:15,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19646 conditions, 2583 events. 1424/2583 cut-off events. For 456529/456529 co-relation queries the response was YES. Maximal size of possible extension queue 280. Compared 16693 event pairs, 255 based on Foata normal form. 2/2584 useless extension candidates. Maximal degree in co-relation 19394. Up to 2321 conditions per place. [2024-06-28 03:04:15,066 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 518 selfloop transitions, 72 changer transitions 0/592 dead transitions. [2024-06-28 03:04:15,066 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 614 places, 592 transitions, 8868 flow [2024-06-28 03:04:15,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:04:15,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:04:15,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 140 transitions. [2024-06-28 03:04:15,067 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3645833333333333 [2024-06-28 03:04:15,067 INFO L175 Difference]: Start difference. First operand has 611 places, 571 transitions, 7424 flow. Second operand 12 states and 140 transitions. [2024-06-28 03:04:15,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 614 places, 592 transitions, 8868 flow [2024-06-28 03:04:17,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 600 places, 592 transitions, 8652 flow, removed 46 selfloop flow, removed 14 redundant places. [2024-06-28 03:04:17,866 INFO L231 Difference]: Finished difference. Result has 601 places, 575 transitions, 7577 flow [2024-06-28 03:04:17,867 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7224, PETRI_DIFFERENCE_MINUEND_PLACES=589, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=571, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=501, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7577, PETRI_PLACES=601, PETRI_TRANSITIONS=575} [2024-06-28 03:04:17,867 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 570 predicate places. [2024-06-28 03:04:17,867 INFO L495 AbstractCegarLoop]: Abstraction has has 601 places, 575 transitions, 7577 flow [2024-06-28 03:04:17,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:17,867 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:04:17,867 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:04:17,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable202 [2024-06-28 03:04:17,868 INFO L420 AbstractCegarLoop]: === Iteration 204 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:04:17,868 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:04:17,868 INFO L85 PathProgramCache]: Analyzing trace with hash -1400979030, now seen corresponding path program 31 times [2024-06-28 03:04:17,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:04:17,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229936136] [2024-06-28 03:04:17,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:04:17,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:04:17,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:04:18,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:04:18,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:04:18,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229936136] [2024-06-28 03:04:18,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229936136] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:04:18,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:04:18,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:04:18,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527034362] [2024-06-28 03:04:18,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:04:18,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:04:18,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:04:18,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:04:18,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:04:19,000 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 03:04:19,000 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 601 places, 575 transitions, 7577 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:19,000 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:04:19,000 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 03:04:19,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:04:19,880 INFO L124 PetriNetUnfolderBase]: 1428/2591 cut-off events. [2024-06-28 03:04:19,881 INFO L125 PetriNetUnfolderBase]: For 442317/442317 co-relation queries the response was YES. [2024-06-28 03:04:19,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19567 conditions, 2591 events. 1428/2591 cut-off events. For 442317/442317 co-relation queries the response was YES. Maximal size of possible extension queue 281. Compared 16772 event pairs, 284 based on Foata normal form. 2/2592 useless extension candidates. Maximal degree in co-relation 19318. Up to 2480 conditions per place. [2024-06-28 03:04:19,930 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 562 selfloop transitions, 26 changer transitions 0/590 dead transitions. [2024-06-28 03:04:19,930 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 611 places, 590 transitions, 8843 flow [2024-06-28 03:04:19,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:04:19,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:04:19,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-28 03:04:19,931 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-28 03:04:19,931 INFO L175 Difference]: Start difference. First operand has 601 places, 575 transitions, 7577 flow. Second operand 11 states and 121 transitions. [2024-06-28 03:04:19,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 611 places, 590 transitions, 8843 flow [2024-06-28 03:04:22,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 603 places, 590 transitions, 8546 flow, removed 84 selfloop flow, removed 8 redundant places. [2024-06-28 03:04:22,927 INFO L231 Difference]: Finished difference. Result has 604 places, 576 transitions, 7396 flow [2024-06-28 03:04:22,927 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7280, PETRI_DIFFERENCE_MINUEND_PLACES=593, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=575, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=549, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7396, PETRI_PLACES=604, PETRI_TRANSITIONS=576} [2024-06-28 03:04:22,928 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 573 predicate places. [2024-06-28 03:04:22,928 INFO L495 AbstractCegarLoop]: Abstraction has has 604 places, 576 transitions, 7396 flow [2024-06-28 03:04:22,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:22,928 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:04:22,928 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:04:22,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable203 [2024-06-28 03:04:22,928 INFO L420 AbstractCegarLoop]: === Iteration 205 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:04:22,929 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:04:22,929 INFO L85 PathProgramCache]: Analyzing trace with hash 647946990, now seen corresponding path program 32 times [2024-06-28 03:04:22,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:04:22,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585300005] [2024-06-28 03:04:22,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:04:22,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:04:22,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:04:24,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:04:24,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:04:24,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585300005] [2024-06-28 03:04:24,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585300005] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:04:24,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:04:24,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:04:24,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690434543] [2024-06-28 03:04:24,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:04:24,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:04:24,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:04:24,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:04:24,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:04:24,182 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 03:04:24,182 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 604 places, 576 transitions, 7396 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:24,182 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:04:24,182 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 03:04:24,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:04:25,070 INFO L124 PetriNetUnfolderBase]: 1432/2599 cut-off events. [2024-06-28 03:04:25,070 INFO L125 PetriNetUnfolderBase]: For 442972/442972 co-relation queries the response was YES. [2024-06-28 03:04:25,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19348 conditions, 2599 events. 1432/2599 cut-off events. For 442972/442972 co-relation queries the response was YES. Maximal size of possible extension queue 282. Compared 16865 event pairs, 270 based on Foata normal form. 2/2600 useless extension candidates. Maximal degree in co-relation 19098. Up to 2429 conditions per place. [2024-06-28 03:04:25,117 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 543 selfloop transitions, 47 changer transitions 0/592 dead transitions. [2024-06-28 03:04:25,118 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 614 places, 592 transitions, 8666 flow [2024-06-28 03:04:25,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:04:25,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:04:25,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-28 03:04:25,119 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36079545454545453 [2024-06-28 03:04:25,119 INFO L175 Difference]: Start difference. First operand has 604 places, 576 transitions, 7396 flow. Second operand 11 states and 127 transitions. [2024-06-28 03:04:25,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 614 places, 592 transitions, 8666 flow [2024-06-28 03:04:28,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 605 places, 592 transitions, 8560 flow, removed 28 selfloop flow, removed 9 redundant places. [2024-06-28 03:04:28,105 INFO L231 Difference]: Finished difference. Result has 606 places, 577 transitions, 7440 flow [2024-06-28 03:04:28,106 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7290, PETRI_DIFFERENCE_MINUEND_PLACES=595, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=576, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=529, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7440, PETRI_PLACES=606, PETRI_TRANSITIONS=577} [2024-06-28 03:04:28,106 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 575 predicate places. [2024-06-28 03:04:28,106 INFO L495 AbstractCegarLoop]: Abstraction has has 606 places, 577 transitions, 7440 flow [2024-06-28 03:04:28,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:28,106 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:04:28,106 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:04:28,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable204 [2024-06-28 03:04:28,107 INFO L420 AbstractCegarLoop]: === Iteration 206 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:04:28,107 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:04:28,107 INFO L85 PathProgramCache]: Analyzing trace with hash 446382944, now seen corresponding path program 32 times [2024-06-28 03:04:28,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:04:28,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943793695] [2024-06-28 03:04:28,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:04:28,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:04:28,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:04:28,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:04:28,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:04:28,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943793695] [2024-06-28 03:04:28,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943793695] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:04:28,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:04:28,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:04:28,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617943685] [2024-06-28 03:04:28,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:04:28,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:04:28,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:04:28,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:04:28,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:04:29,019 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 03:04:29,019 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 606 places, 577 transitions, 7440 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:29,019 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:04:29,019 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 03:04:29,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:04:29,940 INFO L124 PetriNetUnfolderBase]: 1448/2625 cut-off events. [2024-06-28 03:04:29,940 INFO L125 PetriNetUnfolderBase]: For 495632/495632 co-relation queries the response was YES. [2024-06-28 03:04:29,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20437 conditions, 2625 events. 1448/2625 cut-off events. For 495632/495632 co-relation queries the response was YES. Maximal size of possible extension queue 284. Compared 17039 event pairs, 256 based on Foata normal form. 2/2626 useless extension candidates. Maximal degree in co-relation 20186. Up to 2295 conditions per place. [2024-06-28 03:04:29,988 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 506 selfloop transitions, 92 changer transitions 0/600 dead transitions. [2024-06-28 03:04:29,988 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 617 places, 600 transitions, 9438 flow [2024-06-28 03:04:29,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:04:29,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:04:29,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 146 transitions. [2024-06-28 03:04:29,989 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3802083333333333 [2024-06-28 03:04:29,989 INFO L175 Difference]: Start difference. First operand has 606 places, 577 transitions, 7440 flow. Second operand 12 states and 146 transitions. [2024-06-28 03:04:29,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 617 places, 600 transitions, 9438 flow [2024-06-28 03:04:33,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 607 places, 600 transitions, 9279 flow, removed 23 selfloop flow, removed 10 redundant places. [2024-06-28 03:04:33,089 INFO L231 Difference]: Finished difference. Result has 608 places, 581 transitions, 7826 flow [2024-06-28 03:04:33,089 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7281, PETRI_DIFFERENCE_MINUEND_PLACES=596, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=577, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=487, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7826, PETRI_PLACES=608, PETRI_TRANSITIONS=581} [2024-06-28 03:04:33,089 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 577 predicate places. [2024-06-28 03:04:33,089 INFO L495 AbstractCegarLoop]: Abstraction has has 608 places, 581 transitions, 7826 flow [2024-06-28 03:04:33,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:33,090 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:04:33,090 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:04:33,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable205 [2024-06-28 03:04:33,090 INFO L420 AbstractCegarLoop]: === Iteration 207 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:04:33,090 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:04:33,090 INFO L85 PathProgramCache]: Analyzing trace with hash 1426645480, now seen corresponding path program 33 times [2024-06-28 03:04:33,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:04:33,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093487984] [2024-06-28 03:04:33,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:04:33,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:04:33,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:04:34,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:04:34,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:04:34,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093487984] [2024-06-28 03:04:34,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093487984] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:04:34,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:04:34,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:04:34,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389096254] [2024-06-28 03:04:34,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:04:34,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:04:34,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:04:34,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:04:34,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:04:34,183 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 03:04:34,184 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 608 places, 581 transitions, 7826 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:34,184 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:04:34,184 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 03:04:34,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:04:35,238 INFO L124 PetriNetUnfolderBase]: 1464/2651 cut-off events. [2024-06-28 03:04:35,238 INFO L125 PetriNetUnfolderBase]: For 550222/550222 co-relation queries the response was YES. [2024-06-28 03:04:35,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21639 conditions, 2651 events. 1464/2651 cut-off events. For 550222/550222 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 17180 event pairs, 255 based on Foata normal form. 2/2652 useless extension candidates. Maximal degree in co-relation 21387. Up to 2278 conditions per place. [2024-06-28 03:04:35,291 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 498 selfloop transitions, 107 changer transitions 0/607 dead transitions. [2024-06-28 03:04:35,291 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 621 places, 607 transitions, 9856 flow [2024-06-28 03:04:35,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-28 03:04:35,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-28 03:04:35,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 163 transitions. [2024-06-28 03:04:35,292 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3638392857142857 [2024-06-28 03:04:35,292 INFO L175 Difference]: Start difference. First operand has 608 places, 581 transitions, 7826 flow. Second operand 14 states and 163 transitions. [2024-06-28 03:04:35,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 621 places, 607 transitions, 9856 flow [2024-06-28 03:04:38,776 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 612 places, 607 transitions, 9520 flow, removed 104 selfloop flow, removed 9 redundant places. [2024-06-28 03:04:38,782 INFO L231 Difference]: Finished difference. Result has 613 places, 585 transitions, 8074 flow [2024-06-28 03:04:38,782 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7494, PETRI_DIFFERENCE_MINUEND_PLACES=599, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=581, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=476, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=8074, PETRI_PLACES=613, PETRI_TRANSITIONS=585} [2024-06-28 03:04:38,783 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 582 predicate places. [2024-06-28 03:04:38,783 INFO L495 AbstractCegarLoop]: Abstraction has has 613 places, 585 transitions, 8074 flow [2024-06-28 03:04:38,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:38,783 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:04:38,783 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:04:38,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable206 [2024-06-28 03:04:38,783 INFO L420 AbstractCegarLoop]: === Iteration 208 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:04:38,784 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:04:38,784 INFO L85 PathProgramCache]: Analyzing trace with hash 1633448650, now seen corresponding path program 34 times [2024-06-28 03:04:38,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:04:38,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414708335] [2024-06-28 03:04:38,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:04:38,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:04:38,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:04:39,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:04:39,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:04:39,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414708335] [2024-06-28 03:04:39,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414708335] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:04:39,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:04:39,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:04:39,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129774195] [2024-06-28 03:04:39,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:04:39,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:04:39,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:04:39,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:04:39,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:04:40,068 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 03:04:40,068 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 613 places, 585 transitions, 8074 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:40,068 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:04:40,068 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 03:04:40,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:04:41,084 INFO L124 PetriNetUnfolderBase]: 1470/2661 cut-off events. [2024-06-28 03:04:41,084 INFO L125 PetriNetUnfolderBase]: For 555488/555488 co-relation queries the response was YES. [2024-06-28 03:04:41,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21819 conditions, 2661 events. 1470/2661 cut-off events. For 555488/555488 co-relation queries the response was YES. Maximal size of possible extension queue 287. Compared 17267 event pairs, 263 based on Foata normal form. 2/2662 useless extension candidates. Maximal degree in co-relation 21566. Up to 2366 conditions per place. [2024-06-28 03:04:41,135 INFO L140 encePairwiseOnDemand]: 18/32 looper letters, 527 selfloop transitions, 75 changer transitions 0/604 dead transitions. [2024-06-28 03:04:41,135 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 624 places, 604 transitions, 9508 flow [2024-06-28 03:04:41,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:04:41,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:04:41,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 142 transitions. [2024-06-28 03:04:41,136 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3697916666666667 [2024-06-28 03:04:41,136 INFO L175 Difference]: Start difference. First operand has 613 places, 585 transitions, 8074 flow. Second operand 12 states and 142 transitions. [2024-06-28 03:04:41,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 624 places, 604 transitions, 9508 flow [2024-06-28 03:04:44,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 614 places, 604 transitions, 9161 flow, removed 113 selfloop flow, removed 10 redundant places. [2024-06-28 03:04:44,918 INFO L231 Difference]: Finished difference. Result has 615 places, 587 transitions, 8068 flow [2024-06-28 03:04:44,918 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7751, PETRI_DIFFERENCE_MINUEND_PLACES=603, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=585, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=510, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8068, PETRI_PLACES=615, PETRI_TRANSITIONS=587} [2024-06-28 03:04:44,918 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 584 predicate places. [2024-06-28 03:04:44,918 INFO L495 AbstractCegarLoop]: Abstraction has has 615 places, 587 transitions, 8068 flow [2024-06-28 03:04:44,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:44,918 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:04:44,919 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:04:44,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable207 [2024-06-28 03:04:44,919 INFO L420 AbstractCegarLoop]: === Iteration 209 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:04:44,919 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:04:44,920 INFO L85 PathProgramCache]: Analyzing trace with hash -1970583314, now seen corresponding path program 35 times [2024-06-28 03:04:44,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:04:44,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975719001] [2024-06-28 03:04:44,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:04:44,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:04:44,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:04:45,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:04:45,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:04:45,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975719001] [2024-06-28 03:04:45,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975719001] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:04:45,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:04:45,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:04:45,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534686920] [2024-06-28 03:04:45,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:04:45,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:04:45,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:04:45,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:04:45,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:04:46,081 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 03:04:46,081 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 615 places, 587 transitions, 8068 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:46,082 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:04:46,082 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 03:04:46,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:04:47,133 INFO L124 PetriNetUnfolderBase]: 1476/2671 cut-off events. [2024-06-28 03:04:47,133 INFO L125 PetriNetUnfolderBase]: For 555502/555502 co-relation queries the response was YES. [2024-06-28 03:04:47,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21832 conditions, 2671 events. 1476/2671 cut-off events. For 555502/555502 co-relation queries the response was YES. Maximal size of possible extension queue 288. Compared 17349 event pairs, 278 based on Foata normal form. 2/2672 useless extension candidates. Maximal degree in co-relation 21577. Up to 2528 conditions per place. [2024-06-28 03:04:47,180 INFO L140 encePairwiseOnDemand]: 18/32 looper letters, 562 selfloop transitions, 42 changer transitions 0/606 dead transitions. [2024-06-28 03:04:47,180 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 626 places, 606 transitions, 9486 flow [2024-06-28 03:04:47,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:04:47,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:04:47,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 136 transitions. [2024-06-28 03:04:47,181 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3541666666666667 [2024-06-28 03:04:47,181 INFO L175 Difference]: Start difference. First operand has 615 places, 587 transitions, 8068 flow. Second operand 12 states and 136 transitions. [2024-06-28 03:04:47,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 626 places, 606 transitions, 9486 flow [2024-06-28 03:04:50,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 615 places, 606 transitions, 9154 flow, removed 75 selfloop flow, removed 11 redundant places. [2024-06-28 03:04:50,952 INFO L231 Difference]: Finished difference. Result has 616 places, 589 transitions, 7991 flow [2024-06-28 03:04:50,953 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7736, PETRI_DIFFERENCE_MINUEND_PLACES=604, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=587, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=545, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7991, PETRI_PLACES=616, PETRI_TRANSITIONS=589} [2024-06-28 03:04:50,953 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 585 predicate places. [2024-06-28 03:04:50,953 INFO L495 AbstractCegarLoop]: Abstraction has has 616 places, 589 transitions, 7991 flow [2024-06-28 03:04:50,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:50,953 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:04:50,953 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:04:50,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable208 [2024-06-28 03:04:50,954 INFO L420 AbstractCegarLoop]: === Iteration 210 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:04:50,954 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:04:50,954 INFO L85 PathProgramCache]: Analyzing trace with hash 1633725356, now seen corresponding path program 33 times [2024-06-28 03:04:50,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:04:50,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228064148] [2024-06-28 03:04:50,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:04:50,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:04:50,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:04:51,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:04:51,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:04:51,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228064148] [2024-06-28 03:04:51,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228064148] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:04:51,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:04:51,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:04:51,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389815339] [2024-06-28 03:04:51,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:04:51,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:04:51,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:04:51,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:04:51,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:04:52,129 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 03:04:52,130 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 616 places, 589 transitions, 7991 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:52,130 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:04:52,130 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 03:04:52,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:04:53,060 INFO L124 PetriNetUnfolderBase]: 1473/2666 cut-off events. [2024-06-28 03:04:53,060 INFO L125 PetriNetUnfolderBase]: For 515448/515448 co-relation queries the response was YES. [2024-06-28 03:04:53,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21082 conditions, 2666 events. 1473/2666 cut-off events. For 515448/515448 co-relation queries the response was YES. Maximal size of possible extension queue 288. Compared 17308 event pairs, 281 based on Foata normal form. 2/2667 useless extension candidates. Maximal degree in co-relation 20826. Up to 2470 conditions per place. [2024-06-28 03:04:53,110 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 552 selfloop transitions, 50 changer transitions 0/604 dead transitions. [2024-06-28 03:04:53,111 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 626 places, 604 transitions, 9233 flow [2024-06-28 03:04:53,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:04:53,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:04:53,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-28 03:04:53,111 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36079545454545453 [2024-06-28 03:04:53,112 INFO L175 Difference]: Start difference. First operand has 616 places, 589 transitions, 7991 flow. Second operand 11 states and 127 transitions. [2024-06-28 03:04:53,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 626 places, 604 transitions, 9233 flow [2024-06-28 03:04:56,683 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 617 places, 604 transitions, 8973 flow, removed 94 selfloop flow, removed 9 redundant places. [2024-06-28 03:04:56,689 INFO L231 Difference]: Finished difference. Result has 618 places, 589 transitions, 7835 flow [2024-06-28 03:04:56,690 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7731, PETRI_DIFFERENCE_MINUEND_PLACES=607, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=589, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=539, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7835, PETRI_PLACES=618, PETRI_TRANSITIONS=589} [2024-06-28 03:04:56,690 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 587 predicate places. [2024-06-28 03:04:56,690 INFO L495 AbstractCegarLoop]: Abstraction has has 618 places, 589 transitions, 7835 flow [2024-06-28 03:04:56,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:56,690 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:04:56,690 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:04:56,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable209 [2024-06-28 03:04:56,691 INFO L420 AbstractCegarLoop]: === Iteration 211 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:04:56,691 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:04:56,691 INFO L85 PathProgramCache]: Analyzing trace with hash 1432151855, now seen corresponding path program 21 times [2024-06-28 03:04:56,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:04:56,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178051734] [2024-06-28 03:04:56,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:04:56,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:04:56,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:04:57,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:04:57,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:04:57,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178051734] [2024-06-28 03:04:57,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178051734] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:04:57,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:04:57,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:04:57,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077035683] [2024-06-28 03:04:57,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:04:57,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:04:57,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:04:57,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:04:57,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:04:57,622 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 03:04:57,623 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 618 places, 589 transitions, 7835 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:57,623 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:04:57,623 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 03:04:57,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:04:58,588 INFO L124 PetriNetUnfolderBase]: 1493/2712 cut-off events. [2024-06-28 03:04:58,588 INFO L125 PetriNetUnfolderBase]: For 760706/760706 co-relation queries the response was YES. [2024-06-28 03:04:58,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20899 conditions, 2712 events. 1493/2712 cut-off events. For 760706/760706 co-relation queries the response was YES. Maximal size of possible extension queue 289. Compared 17670 event pairs, 265 based on Foata normal form. 16/2727 useless extension candidates. Maximal degree in co-relation 20642. Up to 2373 conditions per place. [2024-06-28 03:04:58,635 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 528 selfloop transitions, 66 changer transitions 17/613 dead transitions. [2024-06-28 03:04:58,636 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 629 places, 613 transitions, 9367 flow [2024-06-28 03:04:58,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:04:58,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:04:58,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 148 transitions. [2024-06-28 03:04:58,637 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3854166666666667 [2024-06-28 03:04:58,637 INFO L175 Difference]: Start difference. First operand has 618 places, 589 transitions, 7835 flow. Second operand 12 states and 148 transitions. [2024-06-28 03:04:58,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 629 places, 613 transitions, 9367 flow [2024-06-28 03:05:01,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 618 places, 613 transitions, 9070 flow, removed 74 selfloop flow, removed 11 redundant places. [2024-06-28 03:05:01,885 INFO L231 Difference]: Finished difference. Result has 620 places, 580 transitions, 7617 flow [2024-06-28 03:05:01,885 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7538, PETRI_DIFFERENCE_MINUEND_PLACES=607, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=589, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=523, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7617, PETRI_PLACES=620, PETRI_TRANSITIONS=580} [2024-06-28 03:05:01,885 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 589 predicate places. [2024-06-28 03:05:01,885 INFO L495 AbstractCegarLoop]: Abstraction has has 620 places, 580 transitions, 7617 flow [2024-06-28 03:05:01,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:05:01,886 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:05:01,886 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:05:01,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable210 [2024-06-28 03:05:01,886 INFO L420 AbstractCegarLoop]: === Iteration 212 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:05:01,886 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:05:01,886 INFO L85 PathProgramCache]: Analyzing trace with hash 1560665709, now seen corresponding path program 22 times [2024-06-28 03:05:01,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:05:01,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038999590] [2024-06-28 03:05:01,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:05:01,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:05:01,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:05:02,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:05:02,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:05:02,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038999590] [2024-06-28 03:05:02,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038999590] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:05:02,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:05:02,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:05:02,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408257616] [2024-06-28 03:05:02,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:05:02,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:05:02,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:05:02,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:05:02,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:05:02,847 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 03:05:02,847 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 620 places, 580 transitions, 7617 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:05:02,847 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:05:02,847 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 03:05:02,847 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:05:03,737 INFO L124 PetriNetUnfolderBase]: 1447/2630 cut-off events. [2024-06-28 03:05:03,737 INFO L125 PetriNetUnfolderBase]: For 482357/482357 co-relation queries the response was YES. [2024-06-28 03:05:03,776 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20031 conditions, 2630 events. 1447/2630 cut-off events. For 482357/482357 co-relation queries the response was YES. Maximal size of possible extension queue 284. Compared 17061 event pairs, 293 based on Foata normal form. 2/2631 useless extension candidates. Maximal degree in co-relation 19773. Up to 2492 conditions per place. [2024-06-28 03:05:03,783 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 536 selfloop transitions, 57 changer transitions 0/595 dead transitions. [2024-06-28 03:05:03,783 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 629 places, 595 transitions, 9309 flow [2024-06-28 03:05:03,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:05:03,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:05:03,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 132 transitions. [2024-06-28 03:05:03,784 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-28 03:05:03,784 INFO L175 Difference]: Start difference. First operand has 620 places, 580 transitions, 7617 flow. Second operand 12 states and 132 transitions. [2024-06-28 03:05:03,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 629 places, 595 transitions, 9309 flow [2024-06-28 03:05:06,901 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 614 places, 595 transitions, 9088 flow, removed 39 selfloop flow, removed 15 redundant places. [2024-06-28 03:05:06,909 INFO L231 Difference]: Finished difference. Result has 615 places, 581 transitions, 7584 flow [2024-06-28 03:05:06,909 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7400, PETRI_DIFFERENCE_MINUEND_PLACES=603, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=580, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=524, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7584, PETRI_PLACES=615, PETRI_TRANSITIONS=581} [2024-06-28 03:05:06,910 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 584 predicate places. [2024-06-28 03:05:06,910 INFO L495 AbstractCegarLoop]: Abstraction has has 615 places, 581 transitions, 7584 flow [2024-06-28 03:05:06,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:05:06,910 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:05:06,910 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:05:06,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable211 [2024-06-28 03:05:06,910 INFO L420 AbstractCegarLoop]: === Iteration 213 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:05:06,911 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:05:06,911 INFO L85 PathProgramCache]: Analyzing trace with hash 1626097000, now seen corresponding path program 36 times [2024-06-28 03:05:06,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:05:06,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38918590] [2024-06-28 03:05:06,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:05:06,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:05:06,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:05:08,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:05:08,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:05:08,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38918590] [2024-06-28 03:05:08,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38918590] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:05:08,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:05:08,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:05:08,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594275376] [2024-06-28 03:05:08,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:05:08,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:05:08,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:05:08,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:05:08,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:05:08,226 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 03:05:08,227 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 615 places, 581 transitions, 7584 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:05:08,227 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:05:08,227 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 03:05:08,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:05:09,175 INFO L124 PetriNetUnfolderBase]: 1453/2640 cut-off events. [2024-06-28 03:05:09,176 INFO L125 PetriNetUnfolderBase]: For 480464/480464 co-relation queries the response was YES. [2024-06-28 03:05:09,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20082 conditions, 2640 events. 1453/2640 cut-off events. For 480464/480464 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 17217 event pairs, 265 based on Foata normal form. 2/2641 useless extension candidates. Maximal degree in co-relation 19825. Up to 2392 conditions per place. [2024-06-28 03:05:09,224 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 537 selfloop transitions, 62 changer transitions 0/601 dead transitions. [2024-06-28 03:05:09,224 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 626 places, 601 transitions, 8996 flow [2024-06-28 03:05:09,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:05:09,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:05:09,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 143 transitions. [2024-06-28 03:05:09,225 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3723958333333333 [2024-06-28 03:05:09,225 INFO L175 Difference]: Start difference. First operand has 615 places, 581 transitions, 7584 flow. Second operand 12 states and 143 transitions. [2024-06-28 03:05:09,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 626 places, 601 transitions, 8996 flow [2024-06-28 03:05:12,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 614 places, 601 transitions, 8640 flow, removed 39 selfloop flow, removed 12 redundant places. [2024-06-28 03:05:12,358 INFO L231 Difference]: Finished difference. Result has 615 places, 583 transitions, 7523 flow [2024-06-28 03:05:12,358 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7228, PETRI_DIFFERENCE_MINUEND_PLACES=603, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=581, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=519, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7523, PETRI_PLACES=615, PETRI_TRANSITIONS=583} [2024-06-28 03:05:12,359 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 584 predicate places. [2024-06-28 03:05:12,359 INFO L495 AbstractCegarLoop]: Abstraction has has 615 places, 583 transitions, 7523 flow [2024-06-28 03:05:12,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:05:12,359 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:05:12,359 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:05:12,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable212 [2024-06-28 03:05:12,359 INFO L420 AbstractCegarLoop]: === Iteration 214 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:05:12,360 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:05:12,360 INFO L85 PathProgramCache]: Analyzing trace with hash 1626091420, now seen corresponding path program 37 times [2024-06-28 03:05:12,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:05:12,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145770305] [2024-06-28 03:05:12,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:05:12,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:05:12,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:05:13,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:05:13,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:05:13,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145770305] [2024-06-28 03:05:13,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145770305] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:05:13,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:05:13,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:05:13,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824675050] [2024-06-28 03:05:13,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:05:13,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:05:13,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:05:13,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:05:13,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:05:13,320 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 03:05:13,320 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 615 places, 583 transitions, 7523 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:05:13,320 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:05:13,320 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 03:05:13,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:05:14,280 INFO L124 PetriNetUnfolderBase]: 1459/2650 cut-off events. [2024-06-28 03:05:14,281 INFO L125 PetriNetUnfolderBase]: For 488077/488077 co-relation queries the response was YES. [2024-06-28 03:05:14,321 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19859 conditions, 2650 events. 1459/2650 cut-off events. For 488077/488077 co-relation queries the response was YES. Maximal size of possible extension queue 288. Compared 17259 event pairs, 265 based on Foata normal form. 2/2651 useless extension candidates. Maximal degree in co-relation 19604. Up to 2377 conditions per place. [2024-06-28 03:05:14,329 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 533 selfloop transitions, 70 changer transitions 0/605 dead transitions. [2024-06-28 03:05:14,329 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 627 places, 605 transitions, 8953 flow [2024-06-28 03:05:14,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 03:05:14,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 03:05:14,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 154 transitions. [2024-06-28 03:05:14,330 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3701923076923077 [2024-06-28 03:05:14,330 INFO L175 Difference]: Start difference. First operand has 615 places, 583 transitions, 7523 flow. Second operand 13 states and 154 transitions. [2024-06-28 03:05:14,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 627 places, 605 transitions, 8953 flow [2024-06-28 03:05:17,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 616 places, 605 transitions, 8663 flow, removed 78 selfloop flow, removed 11 redundant places. [2024-06-28 03:05:17,369 INFO L231 Difference]: Finished difference. Result has 617 places, 585 transitions, 7548 flow [2024-06-28 03:05:17,369 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7233, PETRI_DIFFERENCE_MINUEND_PLACES=604, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=583, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=513, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=7548, PETRI_PLACES=617, PETRI_TRANSITIONS=585} [2024-06-28 03:05:17,369 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 586 predicate places. [2024-06-28 03:05:17,369 INFO L495 AbstractCegarLoop]: Abstraction has has 617 places, 585 transitions, 7548 flow [2024-06-28 03:05:17,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:05:17,370 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:05:17,370 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:05:17,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable213 [2024-06-28 03:05:17,370 INFO L420 AbstractCegarLoop]: === Iteration 215 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:05:17,370 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:05:17,370 INFO L85 PathProgramCache]: Analyzing trace with hash 1626091265, now seen corresponding path program 23 times [2024-06-28 03:05:17,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:05:17,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315173687] [2024-06-28 03:05:17,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:05:17,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:05:17,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:05:18,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:05:18,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:05:18,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315173687] [2024-06-28 03:05:18,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315173687] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:05:18,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:05:18,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:05:18,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472622835] [2024-06-28 03:05:18,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:05:18,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:05:18,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:05:18,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:05:18,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:05:18,293 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 03:05:18,294 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 617 places, 585 transitions, 7548 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:05:18,294 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:05:18,294 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 03:05:18,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:05:19,231 INFO L124 PetriNetUnfolderBase]: 1483/2702 cut-off events. [2024-06-28 03:05:19,231 INFO L125 PetriNetUnfolderBase]: For 739892/739892 co-relation queries the response was YES. [2024-06-28 03:05:19,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20221 conditions, 2702 events. 1483/2702 cut-off events. For 739892/739892 co-relation queries the response was YES. Maximal size of possible extension queue 289. Compared 17621 event pairs, 269 based on Foata normal form. 14/2715 useless extension candidates. Maximal degree in co-relation 19965. Up to 2361 conditions per place. [2024-06-28 03:05:19,281 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 531 selfloop transitions, 54 changer transitions 22/609 dead transitions. [2024-06-28 03:05:19,282 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 628 places, 609 transitions, 9055 flow [2024-06-28 03:05:19,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:05:19,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:05:19,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 148 transitions. [2024-06-28 03:05:19,283 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3854166666666667 [2024-06-28 03:05:19,283 INFO L175 Difference]: Start difference. First operand has 617 places, 585 transitions, 7548 flow. Second operand 12 states and 148 transitions. [2024-06-28 03:05:19,283 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 628 places, 609 transitions, 9055 flow [2024-06-28 03:05:22,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 617 places, 609 transitions, 8760 flow, removed 79 selfloop flow, removed 11 redundant places. [2024-06-28 03:05:22,773 INFO L231 Difference]: Finished difference. Result has 618 places, 571 transitions, 7252 flow [2024-06-28 03:05:22,774 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7253, PETRI_DIFFERENCE_MINUEND_PLACES=606, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=585, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=531, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7252, PETRI_PLACES=618, PETRI_TRANSITIONS=571} [2024-06-28 03:05:22,774 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 587 predicate places. [2024-06-28 03:05:22,774 INFO L495 AbstractCegarLoop]: Abstraction has has 618 places, 571 transitions, 7252 flow [2024-06-28 03:05:22,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:05:22,774 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:05:22,774 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:05:22,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable214 [2024-06-28 03:05:22,775 INFO L420 AbstractCegarLoop]: === Iteration 216 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:05:22,775 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:05:22,775 INFO L85 PathProgramCache]: Analyzing trace with hash 1426789475, now seen corresponding path program 24 times [2024-06-28 03:05:22,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:05:22,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109271752] [2024-06-28 03:05:22,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:05:22,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:05:22,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:05:23,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:05:23,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:05:23,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109271752] [2024-06-28 03:05:23,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109271752] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:05:23,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:05:23,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:05:23,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788107838] [2024-06-28 03:05:23,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:05:23,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:05:23,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:05:23,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:05:23,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:05:23,765 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 03:05:23,765 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 618 places, 571 transitions, 7252 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:05:23,765 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:05:23,765 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 03:05:23,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:05:24,679 INFO L124 PetriNetUnfolderBase]: 1441/2640 cut-off events. [2024-06-28 03:05:24,680 INFO L125 PetriNetUnfolderBase]: For 742823/742823 co-relation queries the response was YES. [2024-06-28 03:05:24,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19634 conditions, 2640 events. 1441/2640 cut-off events. For 742823/742823 co-relation queries the response was YES. Maximal size of possible extension queue 279. Compared 17253 event pairs, 261 based on Foata normal form. 14/2653 useless extension candidates. Maximal degree in co-relation 19377. Up to 2353 conditions per place. [2024-06-28 03:05:24,727 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 517 selfloop transitions, 64 changer transitions 12/595 dead transitions. [2024-06-28 03:05:24,727 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 623 places, 595 transitions, 8733 flow [2024-06-28 03:05:24,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:05:24,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:05:24,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 146 transitions. [2024-06-28 03:05:24,728 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3802083333333333 [2024-06-28 03:05:24,728 INFO L175 Difference]: Start difference. First operand has 618 places, 571 transitions, 7252 flow. Second operand 12 states and 146 transitions. [2024-06-28 03:05:24,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 623 places, 595 transitions, 8733 flow [2024-06-28 03:05:27,957 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 610 places, 595 transitions, 8551 flow, removed 38 selfloop flow, removed 13 redundant places. [2024-06-28 03:05:27,963 INFO L231 Difference]: Finished difference. Result has 611 places, 567 transitions, 7211 flow [2024-06-28 03:05:27,963 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7074, PETRI_DIFFERENCE_MINUEND_PLACES=599, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=571, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=507, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7211, PETRI_PLACES=611, PETRI_TRANSITIONS=567} [2024-06-28 03:05:27,964 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 580 predicate places. [2024-06-28 03:05:27,964 INFO L495 AbstractCegarLoop]: Abstraction has has 611 places, 567 transitions, 7211 flow [2024-06-28 03:05:27,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:05:27,964 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:05:27,964 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:05:27,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable215 [2024-06-28 03:05:27,964 INFO L420 AbstractCegarLoop]: === Iteration 217 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:05:27,964 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:05:27,965 INFO L85 PathProgramCache]: Analyzing trace with hash -1053974040, now seen corresponding path program 38 times [2024-06-28 03:05:27,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:05:27,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439456920] [2024-06-28 03:05:27,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:05:27,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:05:27,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:05:29,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:05:29,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:05:29,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439456920] [2024-06-28 03:05:29,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439456920] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:05:29,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:05:29,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:05:29,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244183036] [2024-06-28 03:05:29,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:05:29,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:05:29,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:05:29,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:05:29,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:05:29,106 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 03:05:29,106 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 611 places, 567 transitions, 7211 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:05:29,106 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:05:29,106 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 03:05:29,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:05:29,977 INFO L124 PetriNetUnfolderBase]: 1413/2584 cut-off events. [2024-06-28 03:05:29,977 INFO L125 PetriNetUnfolderBase]: For 483316/483316 co-relation queries the response was YES. [2024-06-28 03:05:30,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19182 conditions, 2584 events. 1413/2584 cut-off events. For 483316/483316 co-relation queries the response was YES. Maximal size of possible extension queue 277. Compared 16851 event pairs, 282 based on Foata normal form. 2/2585 useless extension candidates. Maximal degree in co-relation 18927. Up to 2508 conditions per place. [2024-06-28 03:05:30,028 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 553 selfloop transitions, 30 changer transitions 0/585 dead transitions. [2024-06-28 03:05:30,028 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 621 places, 585 transitions, 8589 flow [2024-06-28 03:05:30,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:05:30,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:05:30,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 130 transitions. [2024-06-28 03:05:30,029 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3385416666666667 [2024-06-28 03:05:30,029 INFO L175 Difference]: Start difference. First operand has 611 places, 567 transitions, 7211 flow. Second operand 12 states and 130 transitions. [2024-06-28 03:05:30,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 621 places, 585 transitions, 8589 flow [2024-06-28 03:05:33,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 611 places, 585 transitions, 8411 flow, removed 26 selfloop flow, removed 10 redundant places. [2024-06-28 03:05:33,077 INFO L231 Difference]: Finished difference. Result has 612 places, 569 transitions, 7271 flow [2024-06-28 03:05:33,077 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7033, PETRI_DIFFERENCE_MINUEND_PLACES=600, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=567, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=537, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7271, PETRI_PLACES=612, PETRI_TRANSITIONS=569} [2024-06-28 03:05:33,078 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 581 predicate places. [2024-06-28 03:05:33,078 INFO L495 AbstractCegarLoop]: Abstraction has has 612 places, 569 transitions, 7271 flow [2024-06-28 03:05:33,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:05:33,078 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:05:33,078 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:05:33,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable216 [2024-06-28 03:05:33,078 INFO L420 AbstractCegarLoop]: === Iteration 218 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:05:33,079 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:05:33,079 INFO L85 PathProgramCache]: Analyzing trace with hash -1704868798, now seen corresponding path program 34 times [2024-06-28 03:05:33,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:05:33,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014244355] [2024-06-28 03:05:33,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:05:33,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:05:33,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:05:34,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:05:34,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:05:34,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014244355] [2024-06-28 03:05:34,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014244355] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:05:34,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:05:34,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:05:34,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039776856] [2024-06-28 03:05:34,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:05:34,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:05:34,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:05:34,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:05:34,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:05:34,276 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 03:05:34,277 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 612 places, 569 transitions, 7271 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:05:34,277 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:05:34,277 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 03:05:34,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:05:35,151 INFO L124 PetriNetUnfolderBase]: 1417/2592 cut-off events. [2024-06-28 03:05:35,152 INFO L125 PetriNetUnfolderBase]: For 488828/488828 co-relation queries the response was YES. [2024-06-28 03:05:35,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19172 conditions, 2592 events. 1417/2592 cut-off events. For 488828/488828 co-relation queries the response was YES. Maximal size of possible extension queue 278. Compared 16928 event pairs, 276 based on Foata normal form. 2/2593 useless extension candidates. Maximal degree in co-relation 18916. Up to 2503 conditions per place. [2024-06-28 03:05:35,200 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 556 selfloop transitions, 26 changer transitions 0/584 dead transitions. [2024-06-28 03:05:35,201 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 622 places, 584 transitions, 8529 flow [2024-06-28 03:05:35,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:05:35,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:05:35,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-28 03:05:35,202 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3494318181818182 [2024-06-28 03:05:35,202 INFO L175 Difference]: Start difference. First operand has 612 places, 569 transitions, 7271 flow. Second operand 11 states and 123 transitions. [2024-06-28 03:05:35,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 622 places, 584 transitions, 8529 flow [2024-06-28 03:05:38,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 612 places, 584 transitions, 8309 flow, removed 82 selfloop flow, removed 10 redundant places. [2024-06-28 03:05:38,298 INFO L231 Difference]: Finished difference. Result has 613 places, 570 transitions, 7169 flow [2024-06-28 03:05:38,298 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7051, PETRI_DIFFERENCE_MINUEND_PLACES=602, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=569, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=543, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7169, PETRI_PLACES=613, PETRI_TRANSITIONS=570} [2024-06-28 03:05:38,299 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 582 predicate places. [2024-06-28 03:05:38,299 INFO L495 AbstractCegarLoop]: Abstraction has has 613 places, 570 transitions, 7169 flow [2024-06-28 03:05:38,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:05:38,299 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:05:38,299 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:05:38,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable217 [2024-06-28 03:05:38,299 INFO L420 AbstractCegarLoop]: === Iteration 219 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:05:38,299 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:05:38,300 INFO L85 PathProgramCache]: Analyzing trace with hash -2127931405, now seen corresponding path program 25 times [2024-06-28 03:05:38,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:05:38,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110000530] [2024-06-28 03:05:38,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:05:38,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:05:38,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:05:39,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:05:39,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:05:39,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110000530] [2024-06-28 03:05:39,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110000530] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:05:39,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:05:39,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:05:39,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346673842] [2024-06-28 03:05:39,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:05:39,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:05:39,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:05:39,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:05:39,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:05:39,358 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 03:05:39,358 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 613 places, 570 transitions, 7169 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:05:39,358 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:05:39,358 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 03:05:39,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:05:40,250 INFO L124 PetriNetUnfolderBase]: 1440/2641 cut-off events. [2024-06-28 03:05:40,250 INFO L125 PetriNetUnfolderBase]: For 745391/745391 co-relation queries the response was YES. [2024-06-28 03:05:40,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19183 conditions, 2641 events. 1440/2641 cut-off events. For 745391/745391 co-relation queries the response was YES. Maximal size of possible extension queue 279. Compared 17251 event pairs, 273 based on Foata normal form. 16/2656 useless extension candidates. Maximal degree in co-relation 18926. Up to 2422 conditions per place. [2024-06-28 03:05:40,299 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 540 selfloop transitions, 25 changer transitions 27/594 dead transitions. [2024-06-28 03:05:40,299 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 624 places, 594 transitions, 8747 flow [2024-06-28 03:05:40,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:05:40,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:05:40,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 140 transitions. [2024-06-28 03:05:40,300 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3645833333333333 [2024-06-28 03:05:40,300 INFO L175 Difference]: Start difference. First operand has 613 places, 570 transitions, 7169 flow. Second operand 12 states and 140 transitions. [2024-06-28 03:05:40,300 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 624 places, 594 transitions, 8747 flow [2024-06-28 03:05:43,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 615 places, 594 transitions, 8595 flow, removed 51 selfloop flow, removed 9 redundant places. [2024-06-28 03:05:43,299 INFO L231 Difference]: Finished difference. Result has 617 places, 552 transitions, 6846 flow [2024-06-28 03:05:43,299 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7017, PETRI_DIFFERENCE_MINUEND_PLACES=604, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=570, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=545, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6846, PETRI_PLACES=617, PETRI_TRANSITIONS=552} [2024-06-28 03:05:43,300 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 586 predicate places. [2024-06-28 03:05:43,300 INFO L495 AbstractCegarLoop]: Abstraction has has 617 places, 552 transitions, 6846 flow [2024-06-28 03:05:43,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:05:43,300 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:05:43,300 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:05:43,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable218 [2024-06-28 03:05:43,300 INFO L420 AbstractCegarLoop]: === Iteration 220 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:05:43,301 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:05:43,301 INFO L85 PathProgramCache]: Analyzing trace with hash -2127931250, now seen corresponding path program 39 times [2024-06-28 03:05:43,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:05:43,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028778693] [2024-06-28 03:05:43,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:05:43,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:05:43,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:05:44,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:05:44,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:05:44,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028778693] [2024-06-28 03:05:44,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028778693] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:05:44,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:05:44,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:05:44,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292344275] [2024-06-28 03:05:44,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:05:44,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:05:44,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:05:44,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:05:44,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:05:44,436 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 03:05:44,436 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 617 places, 552 transitions, 6846 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:05:44,436 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:05:44,436 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 03:05:44,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:05:45,307 INFO L124 PetriNetUnfolderBase]: 1354/2497 cut-off events. [2024-06-28 03:05:45,308 INFO L125 PetriNetUnfolderBase]: For 406781/406781 co-relation queries the response was YES. [2024-06-28 03:05:45,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17176 conditions, 2497 events. 1354/2497 cut-off events. For 406781/406781 co-relation queries the response was YES. Maximal size of possible extension queue 267. Compared 16326 event pairs, 268 based on Foata normal form. 2/2498 useless extension candidates. Maximal degree in co-relation 16917. Up to 2416 conditions per place. [2024-06-28 03:05:45,355 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 539 selfloop transitions, 26 changer transitions 0/567 dead transitions. [2024-06-28 03:05:45,356 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 622 places, 567 transitions, 8016 flow [2024-06-28 03:05:45,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:05:45,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:05:45,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 130 transitions. [2024-06-28 03:05:45,356 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3385416666666667 [2024-06-28 03:05:45,357 INFO L175 Difference]: Start difference. First operand has 617 places, 552 transitions, 6846 flow. Second operand 12 states and 130 transitions. [2024-06-28 03:05:45,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 622 places, 567 transitions, 8016 flow [2024-06-28 03:05:48,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 600 places, 567 transitions, 7538 flow, removed 76 selfloop flow, removed 22 redundant places. [2024-06-28 03:05:48,133 INFO L231 Difference]: Finished difference. Result has 601 places, 552 transitions, 6425 flow [2024-06-28 03:05:48,134 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6368, PETRI_DIFFERENCE_MINUEND_PLACES=589, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=552, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=526, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6425, PETRI_PLACES=601, PETRI_TRANSITIONS=552} [2024-06-28 03:05:48,134 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 570 predicate places. [2024-06-28 03:05:48,134 INFO L495 AbstractCegarLoop]: Abstraction has has 601 places, 552 transitions, 6425 flow [2024-06-28 03:05:48,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:05:48,134 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:05:48,134 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:05:48,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable219 [2024-06-28 03:05:48,135 INFO L420 AbstractCegarLoop]: === Iteration 221 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:05:48,135 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:05:48,135 INFO L85 PathProgramCache]: Analyzing trace with hash -1861692214, now seen corresponding path program 35 times [2024-06-28 03:05:48,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:05:48,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152623615] [2024-06-28 03:05:48,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:05:48,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:05:48,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:05:49,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:05:49,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:05:49,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152623615] [2024-06-28 03:05:49,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152623615] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:05:49,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:05:49,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:05:49,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656248896] [2024-06-28 03:05:49,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:05:49,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:05:49,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:05:49,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:05:49,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:05:49,174 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 03:05:49,174 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 601 places, 552 transitions, 6425 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:05:49,174 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:05:49,174 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 03:05:49,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:05:49,912 INFO L124 PetriNetUnfolderBase]: 1351/2492 cut-off events. [2024-06-28 03:05:49,912 INFO L125 PetriNetUnfolderBase]: For 347794/347794 co-relation queries the response was YES. [2024-06-28 03:05:49,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16132 conditions, 2492 events. 1351/2492 cut-off events. For 347794/347794 co-relation queries the response was YES. Maximal size of possible extension queue 267. Compared 16304 event pairs, 269 based on Foata normal form. 2/2493 useless extension candidates. Maximal degree in co-relation 15877. Up to 2355 conditions per place. [2024-06-28 03:05:49,956 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 537 selfloop transitions, 27 changer transitions 0/566 dead transitions. [2024-06-28 03:05:49,956 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 611 places, 566 transitions, 7585 flow [2024-06-28 03:05:49,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:05:49,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:05:49,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-28 03:05:49,957 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-28 03:05:49,957 INFO L175 Difference]: Start difference. First operand has 601 places, 552 transitions, 6425 flow. Second operand 11 states and 121 transitions. [2024-06-28 03:05:49,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 611 places, 566 transitions, 7585 flow [2024-06-28 03:05:52,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 598 places, 566 transitions, 7435 flow, removed 14 selfloop flow, removed 13 redundant places. [2024-06-28 03:05:52,369 INFO L231 Difference]: Finished difference. Result has 599 places, 552 transitions, 6333 flow [2024-06-28 03:05:52,370 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6275, PETRI_DIFFERENCE_MINUEND_PLACES=588, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=552, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=525, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6333, PETRI_PLACES=599, PETRI_TRANSITIONS=552} [2024-06-28 03:05:52,370 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 568 predicate places. [2024-06-28 03:05:52,370 INFO L495 AbstractCegarLoop]: Abstraction has has 599 places, 552 transitions, 6333 flow [2024-06-28 03:05:52,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:05:52,371 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:05:52,371 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:05:52,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable220 [2024-06-28 03:05:52,371 INFO L420 AbstractCegarLoop]: === Iteration 222 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:05:52,371 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:05:52,371 INFO L85 PathProgramCache]: Analyzing trace with hash -1900645514, now seen corresponding path program 40 times [2024-06-28 03:05:52,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:05:52,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887944281] [2024-06-28 03:05:52,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:05:52,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:05:52,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:05:53,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:05:53,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:05:53,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887944281] [2024-06-28 03:05:53,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887944281] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:05:53,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:05:53,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:05:53,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571678017] [2024-06-28 03:05:53,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:05:53,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:05:53,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:05:53,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:05:53,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:05:53,436 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 03:05:53,437 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 599 places, 552 transitions, 6333 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:05:53,437 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:05:53,437 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 03:05:53,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:05:54,446 INFO L124 PetriNetUnfolderBase]: 1414/2600 cut-off events. [2024-06-28 03:05:54,446 INFO L125 PetriNetUnfolderBase]: For 356199/356199 co-relation queries the response was YES. [2024-06-28 03:05:54,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16780 conditions, 2600 events. 1414/2600 cut-off events. For 356199/356199 co-relation queries the response was YES. Maximal size of possible extension queue 278. Compared 17094 event pairs, 101 based on Foata normal form. 2/2601 useless extension candidates. Maximal degree in co-relation 16526. Up to 1670 conditions per place. [2024-06-28 03:05:54,491 INFO L140 encePairwiseOnDemand]: 18/32 looper letters, 389 selfloop transitions, 218 changer transitions 0/609 dead transitions. [2024-06-28 03:05:54,492 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 611 places, 609 transitions, 8054 flow [2024-06-28 03:05:54,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 03:05:54,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 03:05:54,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 172 transitions. [2024-06-28 03:05:54,493 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41346153846153844 [2024-06-28 03:05:54,493 INFO L175 Difference]: Start difference. First operand has 599 places, 552 transitions, 6333 flow. Second operand 13 states and 172 transitions. [2024-06-28 03:05:54,493 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 611 places, 609 transitions, 8054 flow [2024-06-28 03:05:56,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 595 places, 609 transitions, 7565 flow, removed 31 selfloop flow, removed 16 redundant places. [2024-06-28 03:05:56,885 INFO L231 Difference]: Finished difference. Result has 600 places, 578 transitions, 6879 flow [2024-06-28 03:05:56,886 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5844, PETRI_DIFFERENCE_MINUEND_PLACES=583, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=552, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=192, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=344, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=6879, PETRI_PLACES=600, PETRI_TRANSITIONS=578} [2024-06-28 03:05:56,886 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 569 predicate places. [2024-06-28 03:05:56,886 INFO L495 AbstractCegarLoop]: Abstraction has has 600 places, 578 transitions, 6879 flow [2024-06-28 03:05:56,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:05:56,886 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:05:56,886 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:05:56,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable221 [2024-06-28 03:05:56,887 INFO L420 AbstractCegarLoop]: === Iteration 223 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:05:56,887 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:05:56,887 INFO L85 PathProgramCache]: Analyzing trace with hash 544746308, now seen corresponding path program 41 times [2024-06-28 03:05:56,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:05:56,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906383750] [2024-06-28 03:05:56,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:05:56,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:05:56,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:05:57,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:05:57,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:05:57,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906383750] [2024-06-28 03:05:57,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906383750] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:05:57,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:05:57,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:05:57,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663821089] [2024-06-28 03:05:57,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:05:57,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:05:57,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:05:57,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:05:57,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:05:57,861 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 03:05:57,862 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 600 places, 578 transitions, 6879 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:05:57,862 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:05:57,862 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 03:05:57,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:05:58,993 INFO L124 PetriNetUnfolderBase]: 1483/2722 cut-off events. [2024-06-28 03:05:58,993 INFO L125 PetriNetUnfolderBase]: For 362206/362206 co-relation queries the response was YES. [2024-06-28 03:05:59,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17702 conditions, 2722 events. 1483/2722 cut-off events. For 362206/362206 co-relation queries the response was YES. Maximal size of possible extension queue 289. Compared 18066 event pairs, 142 based on Foata normal form. 2/2723 useless extension candidates. Maximal degree in co-relation 17449. Up to 1811 conditions per place. [2024-06-28 03:05:59,041 INFO L140 encePairwiseOnDemand]: 18/32 looper letters, 456 selfloop transitions, 187 changer transitions 0/645 dead transitions. [2024-06-28 03:05:59,042 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 612 places, 645 transitions, 8835 flow [2024-06-28 03:05:59,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 03:05:59,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 03:05:59,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 175 transitions. [2024-06-28 03:05:59,043 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4206730769230769 [2024-06-28 03:05:59,043 INFO L175 Difference]: Start difference. First operand has 600 places, 578 transitions, 6879 flow. Second operand 13 states and 175 transitions. [2024-06-28 03:05:59,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 612 places, 645 transitions, 8835 flow [2024-06-28 03:06:01,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 606 places, 645 transitions, 8271 flow, removed 100 selfloop flow, removed 6 redundant places. [2024-06-28 03:06:01,394 INFO L231 Difference]: Finished difference. Result has 610 places, 607 transitions, 7265 flow [2024-06-28 03:06:01,394 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6331, PETRI_DIFFERENCE_MINUEND_PLACES=594, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=578, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=158, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=405, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=7265, PETRI_PLACES=610, PETRI_TRANSITIONS=607} [2024-06-28 03:06:01,395 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 579 predicate places. [2024-06-28 03:06:01,395 INFO L495 AbstractCegarLoop]: Abstraction has has 610 places, 607 transitions, 7265 flow [2024-06-28 03:06:01,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:06:01,395 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:06:01,395 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:06:01,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable222 [2024-06-28 03:06:01,395 INFO L420 AbstractCegarLoop]: === Iteration 224 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:06:01,396 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:06:01,396 INFO L85 PathProgramCache]: Analyzing trace with hash -119656508, now seen corresponding path program 42 times [2024-06-28 03:06:01,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:06:01,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734227714] [2024-06-28 03:06:01,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:06:01,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:06:01,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:06:02,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:06:02,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:06:02,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734227714] [2024-06-28 03:06:02,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734227714] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:06:02,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:06:02,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:06:02,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416747570] [2024-06-28 03:06:02,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:06:02,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:06:02,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:06:02,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:06:02,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:06:02,380 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 03:06:02,380 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 610 places, 607 transitions, 7265 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:06:02,380 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:06:02,381 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 03:06:02,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:06:03,487 INFO L124 PetriNetUnfolderBase]: 1522/2787 cut-off events. [2024-06-28 03:06:03,487 INFO L125 PetriNetUnfolderBase]: For 366944/366944 co-relation queries the response was YES. [2024-06-28 03:06:03,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17831 conditions, 2787 events. 1522/2787 cut-off events. For 366944/366944 co-relation queries the response was YES. Maximal size of possible extension queue 297. Compared 18557 event pairs, 131 based on Foata normal form. 2/2788 useless extension candidates. Maximal degree in co-relation 17575. Up to 1879 conditions per place. [2024-06-28 03:06:03,540 INFO L140 encePairwiseOnDemand]: 18/32 looper letters, 463 selfloop transitions, 190 changer transitions 0/655 dead transitions. [2024-06-28 03:06:03,540 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 622 places, 655 transitions, 8973 flow [2024-06-28 03:06:03,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 03:06:03,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 03:06:03,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 166 transitions. [2024-06-28 03:06:03,541 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39903846153846156 [2024-06-28 03:06:03,541 INFO L175 Difference]: Start difference. First operand has 610 places, 607 transitions, 7265 flow. Second operand 13 states and 166 transitions. [2024-06-28 03:06:03,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 622 places, 655 transitions, 8973 flow [2024-06-28 03:06:06,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 617 places, 655 transitions, 8547 flow, removed 114 selfloop flow, removed 5 redundant places. [2024-06-28 03:06:06,156 INFO L231 Difference]: Finished difference. Result has 621 places, 623 transitions, 7559 flow [2024-06-28 03:06:06,156 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6839, PETRI_DIFFERENCE_MINUEND_PLACES=605, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=607, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=174, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=417, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=7559, PETRI_PLACES=621, PETRI_TRANSITIONS=623} [2024-06-28 03:06:06,158 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 590 predicate places. [2024-06-28 03:06:06,158 INFO L495 AbstractCegarLoop]: Abstraction has has 621 places, 623 transitions, 7559 flow [2024-06-28 03:06:06,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:06:06,158 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:06:06,158 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:06:06,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable223 [2024-06-28 03:06:06,159 INFO L420 AbstractCegarLoop]: === Iteration 225 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:06:06,159 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:06:06,159 INFO L85 PathProgramCache]: Analyzing trace with hash 1783631724, now seen corresponding path program 43 times [2024-06-28 03:06:06,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:06:06,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851953060] [2024-06-28 03:06:06,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:06:06,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:06:06,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:06:07,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:06:07,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:06:07,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851953060] [2024-06-28 03:06:07,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851953060] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:06:07,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:06:07,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:06:07,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742641801] [2024-06-28 03:06:07,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:06:07,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:06:07,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:06:07,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:06:07,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:06:07,180 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 03:06:07,180 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 621 places, 623 transitions, 7559 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:06:07,180 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:06:07,180 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 03:06:07,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:06:08,310 INFO L124 PetriNetUnfolderBase]: 1528/2797 cut-off events. [2024-06-28 03:06:08,311 INFO L125 PetriNetUnfolderBase]: For 372495/372495 co-relation queries the response was YES. [2024-06-28 03:06:08,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17995 conditions, 2797 events. 1528/2797 cut-off events. For 372495/372495 co-relation queries the response was YES. Maximal size of possible extension queue 298. Compared 18596 event pairs, 180 based on Foata normal form. 2/2798 useless extension candidates. Maximal degree in co-relation 17735. Up to 1838 conditions per place. [2024-06-28 03:06:08,363 INFO L140 encePairwiseOnDemand]: 18/32 looper letters, 467 selfloop transitions, 197 changer transitions 0/666 dead transitions. [2024-06-28 03:06:08,363 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 633 places, 666 transitions, 9256 flow [2024-06-28 03:06:08,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 03:06:08,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 03:06:08,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 177 transitions. [2024-06-28 03:06:08,364 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4254807692307692 [2024-06-28 03:06:08,364 INFO L175 Difference]: Start difference. First operand has 621 places, 623 transitions, 7559 flow. Second operand 13 states and 177 transitions. [2024-06-28 03:06:08,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 633 places, 666 transitions, 9256 flow [2024-06-28 03:06:11,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 628 places, 666 transitions, 8760 flow, removed 95 selfloop flow, removed 5 redundant places. [2024-06-28 03:06:11,086 INFO L231 Difference]: Finished difference. Result has 629 places, 626 transitions, 7659 flow [2024-06-28 03:06:11,087 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7065, PETRI_DIFFERENCE_MINUEND_PLACES=616, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=623, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=194, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=427, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=7659, PETRI_PLACES=629, PETRI_TRANSITIONS=626} [2024-06-28 03:06:11,087 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 598 predicate places. [2024-06-28 03:06:11,087 INFO L495 AbstractCegarLoop]: Abstraction has has 629 places, 626 transitions, 7659 flow [2024-06-28 03:06:11,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:06:11,087 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:06:11,087 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:06:11,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable224 [2024-06-28 03:06:11,088 INFO L420 AbstractCegarLoop]: === Iteration 226 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:06:11,088 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:06:11,088 INFO L85 PathProgramCache]: Analyzing trace with hash 314615828, now seen corresponding path program 44 times [2024-06-28 03:06:11,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:06:11,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444628807] [2024-06-28 03:06:11,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:06:11,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:06:11,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:06:11,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:06:11,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:06:11,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444628807] [2024-06-28 03:06:11,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444628807] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:06:11,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:06:11,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:06:11,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094654260] [2024-06-28 03:06:11,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:06:11,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:06:11,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:06:11,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:06:11,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:06:12,025 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 03:06:12,025 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 629 places, 626 transitions, 7659 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:06:12,025 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:06:12,025 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 03:06:12,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:06:13,182 INFO L124 PetriNetUnfolderBase]: 1524/2791 cut-off events. [2024-06-28 03:06:13,182 INFO L125 PetriNetUnfolderBase]: For 326774/326774 co-relation queries the response was YES. [2024-06-28 03:06:13,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17235 conditions, 2791 events. 1524/2791 cut-off events. For 326774/326774 co-relation queries the response was YES. Maximal size of possible extension queue 298. Compared 18562 event pairs, 187 based on Foata normal form. 2/2792 useless extension candidates. Maximal degree in co-relation 16974. Up to 1835 conditions per place. [2024-06-28 03:06:13,233 INFO L140 encePairwiseOnDemand]: 18/32 looper letters, 473 selfloop transitions, 192 changer transitions 0/667 dead transitions. [2024-06-28 03:06:13,233 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 641 places, 667 transitions, 9340 flow [2024-06-28 03:06:13,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 03:06:13,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 03:06:13,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 174 transitions. [2024-06-28 03:06:13,234 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4182692307692308 [2024-06-28 03:06:13,234 INFO L175 Difference]: Start difference. First operand has 629 places, 626 transitions, 7659 flow. Second operand 13 states and 174 transitions. [2024-06-28 03:06:13,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 641 places, 667 transitions, 9340 flow [2024-06-28 03:06:15,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 627 places, 667 transitions, 8745 flow, removed 146 selfloop flow, removed 14 redundant places. [2024-06-28 03:06:15,756 INFO L231 Difference]: Finished difference. Result has 628 places, 628 transitions, 7635 flow [2024-06-28 03:06:15,757 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7064, PETRI_DIFFERENCE_MINUEND_PLACES=615, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=626, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=190, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=434, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=7635, PETRI_PLACES=628, PETRI_TRANSITIONS=628} [2024-06-28 03:06:15,757 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 597 predicate places. [2024-06-28 03:06:15,757 INFO L495 AbstractCegarLoop]: Abstraction has has 628 places, 628 transitions, 7635 flow [2024-06-28 03:06:15,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:06:15,757 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:06:15,757 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:06:15,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable225 [2024-06-28 03:06:15,758 INFO L420 AbstractCegarLoop]: === Iteration 227 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:06:15,758 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:06:15,758 INFO L85 PathProgramCache]: Analyzing trace with hash -603605690, now seen corresponding path program 1 times [2024-06-28 03:06:15,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:06:15,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911037759] [2024-06-28 03:06:15,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:06:15,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:06:15,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:06:16,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:06:16,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:06:16,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911037759] [2024-06-28 03:06:16,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911037759] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:06:16,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:06:16,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 03:06:16,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612551856] [2024-06-28 03:06:16,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:06:16,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 03:06:16,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:06:16,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 03:06:16,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-06-28 03:06:16,958 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 03:06:16,958 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 628 places, 628 transitions, 7635 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:06:16,958 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:06:16,958 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 03:06:16,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:06:17,940 INFO L124 PetriNetUnfolderBase]: 1565/2878 cut-off events. [2024-06-28 03:06:17,940 INFO L125 PetriNetUnfolderBase]: For 668234/668234 co-relation queries the response was YES. [2024-06-28 03:06:17,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19761 conditions, 2878 events. 1565/2878 cut-off events. For 668234/668234 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 19121 event pairs, 238 based on Foata normal form. 8/2885 useless extension candidates. Maximal degree in co-relation 19508. Up to 2522 conditions per place. [2024-06-28 03:06:17,993 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 593 selfloop transitions, 54 changer transitions 16/665 dead transitions. [2024-06-28 03:06:17,993 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 641 places, 665 transitions, 9743 flow [2024-06-28 03:06:17,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-28 03:06:17,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-28 03:06:17,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 169 transitions. [2024-06-28 03:06:17,994 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37723214285714285 [2024-06-28 03:06:17,994 INFO L175 Difference]: Start difference. First operand has 628 places, 628 transitions, 7635 flow. Second operand 14 states and 169 transitions. [2024-06-28 03:06:17,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 641 places, 665 transitions, 9743 flow [2024-06-28 03:06:21,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 632 places, 665 transitions, 9180 flow, removed 113 selfloop flow, removed 9 redundant places. [2024-06-28 03:06:21,479 INFO L231 Difference]: Finished difference. Result has 633 places, 624 transitions, 7163 flow [2024-06-28 03:06:21,480 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7072, PETRI_DIFFERENCE_MINUEND_PLACES=619, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=628, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=574, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=7163, PETRI_PLACES=633, PETRI_TRANSITIONS=624} [2024-06-28 03:06:21,480 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 602 predicate places. [2024-06-28 03:06:21,480 INFO L495 AbstractCegarLoop]: Abstraction has has 633 places, 624 transitions, 7163 flow [2024-06-28 03:06:21,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:06:21,480 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:06:21,480 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:06:21,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable226 [2024-06-28 03:06:21,481 INFO L420 AbstractCegarLoop]: === Iteration 228 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:06:21,481 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:06:21,481 INFO L85 PathProgramCache]: Analyzing trace with hash -545393270, now seen corresponding path program 2 times [2024-06-28 03:06:21,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:06:21,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032736999] [2024-06-28 03:06:21,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:06:21,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:06:21,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:06:22,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:06:22,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:06:22,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032736999] [2024-06-28 03:06:22,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032736999] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:06:22,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:06:22,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 03:06:22,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754082691] [2024-06-28 03:06:22,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:06:22,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 03:06:22,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:06:22,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 03:06:22,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-28 03:06:22,595 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 03:06:22,599 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 633 places, 624 transitions, 7163 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:06:22,599 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:06:22,599 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 03:06:22,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:06:23,509 INFO L124 PetriNetUnfolderBase]: 1549/2848 cut-off events. [2024-06-28 03:06:23,510 INFO L125 PetriNetUnfolderBase]: For 715048/715048 co-relation queries the response was YES. [2024-06-28 03:06:23,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19208 conditions, 2848 events. 1549/2848 cut-off events. For 715048/715048 co-relation queries the response was YES. Maximal size of possible extension queue 296. Compared 18872 event pairs, 248 based on Foata normal form. 10/2857 useless extension candidates. Maximal degree in co-relation 18958. Up to 2635 conditions per place. [2024-06-28 03:06:23,562 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 585 selfloop transitions, 54 changer transitions 11/652 dead transitions. [2024-06-28 03:06:23,562 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 640 places, 652 transitions, 8713 flow [2024-06-28 03:06:23,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-28 03:06:23,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-28 03:06:23,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 161 transitions. [2024-06-28 03:06:23,563 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.359375 [2024-06-28 03:06:23,563 INFO L175 Difference]: Start difference. First operand has 633 places, 624 transitions, 7163 flow. Second operand 14 states and 161 transitions. [2024-06-28 03:06:23,563 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 640 places, 652 transitions, 8713 flow [2024-06-28 03:06:27,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 627 places, 652 transitions, 8608 flow, removed 4 selfloop flow, removed 13 redundant places. [2024-06-28 03:06:27,090 INFO L231 Difference]: Finished difference. Result has 628 places, 621 transitions, 7151 flow [2024-06-28 03:06:27,090 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7058, PETRI_DIFFERENCE_MINUEND_PLACES=614, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=624, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=570, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=7151, PETRI_PLACES=628, PETRI_TRANSITIONS=621} [2024-06-28 03:06:27,090 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 597 predicate places. [2024-06-28 03:06:27,091 INFO L495 AbstractCegarLoop]: Abstraction has has 628 places, 621 transitions, 7151 flow [2024-06-28 03:06:27,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:06:27,091 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:06:27,091 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:06:27,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable227 [2024-06-28 03:06:27,091 INFO L420 AbstractCegarLoop]: === Iteration 229 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:06:27,091 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:06:27,092 INFO L85 PathProgramCache]: Analyzing trace with hash -1329904060, now seen corresponding path program 3 times [2024-06-28 03:06:27,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:06:27,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847941224] [2024-06-28 03:06:27,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:06:27,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:06:27,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:06:28,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:06:28,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:06:28,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847941224] [2024-06-28 03:06:28,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847941224] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:06:28,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:06:28,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 03:06:28,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489199849] [2024-06-28 03:06:28,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:06:28,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 03:06:28,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:06:28,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 03:06:28,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-06-28 03:06:28,347 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 03:06:28,347 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 628 places, 621 transitions, 7151 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:06:28,347 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:06:28,347 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 03:06:28,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:06:29,436 INFO L124 PetriNetUnfolderBase]: 1559/2874 cut-off events. [2024-06-28 03:06:29,436 INFO L125 PetriNetUnfolderBase]: For 813686/813686 co-relation queries the response was YES. [2024-06-28 03:06:29,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20915 conditions, 2874 events. 1559/2874 cut-off events. For 813686/813686 co-relation queries the response was YES. Maximal size of possible extension queue 294. Compared 19051 event pairs, 256 based on Foata normal form. 8/2881 useless extension candidates. Maximal degree in co-relation 20668. Up to 2596 conditions per place. [2024-06-28 03:06:29,487 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 590 selfloop transitions, 52 changer transitions 10/654 dead transitions. [2024-06-28 03:06:29,487 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 639 places, 654 transitions, 9213 flow [2024-06-28 03:06:29,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-06-28 03:06:29,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-06-28 03:06:29,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 169 transitions. [2024-06-28 03:06:29,488 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35208333333333336 [2024-06-28 03:06:29,488 INFO L175 Difference]: Start difference. First operand has 628 places, 621 transitions, 7151 flow. Second operand 15 states and 169 transitions. [2024-06-28 03:06:29,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 639 places, 654 transitions, 9213 flow [2024-06-28 03:06:34,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 626 places, 654 transitions, 9097 flow, removed 4 selfloop flow, removed 13 redundant places. [2024-06-28 03:06:34,390 INFO L231 Difference]: Finished difference. Result has 627 places, 616 transitions, 7114 flow [2024-06-28 03:06:34,390 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7039, PETRI_DIFFERENCE_MINUEND_PLACES=612, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=621, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=569, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=7114, PETRI_PLACES=627, PETRI_TRANSITIONS=616} [2024-06-28 03:06:34,390 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 596 predicate places. [2024-06-28 03:06:34,391 INFO L495 AbstractCegarLoop]: Abstraction has has 627 places, 616 transitions, 7114 flow [2024-06-28 03:06:34,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:06:34,391 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:06:34,391 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:06:34,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable228 [2024-06-28 03:06:34,391 INFO L420 AbstractCegarLoop]: === Iteration 230 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:06:34,392 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:06:34,392 INFO L85 PathProgramCache]: Analyzing trace with hash -545513240, now seen corresponding path program 4 times [2024-06-28 03:06:34,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:06:34,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372913430] [2024-06-28 03:06:34,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:06:34,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:06:34,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:06:35,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:06:35,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:06:35,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372913430] [2024-06-28 03:06:35,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372913430] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:06:35,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:06:35,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 03:06:35,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488053423] [2024-06-28 03:06:35,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:06:35,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 03:06:35,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:06:35,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 03:06:35,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-06-28 03:06:35,613 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 03:06:35,613 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 627 places, 616 transitions, 7114 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:06:35,613 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:06:35,614 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 03:06:35,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:06:36,719 INFO L124 PetriNetUnfolderBase]: 1552/2865 cut-off events. [2024-06-28 03:06:36,719 INFO L125 PetriNetUnfolderBase]: For 804986/804986 co-relation queries the response was YES. [2024-06-28 03:06:36,756 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20842 conditions, 2865 events. 1552/2865 cut-off events. For 804986/804986 co-relation queries the response was YES. Maximal size of possible extension queue 294. Compared 19005 event pairs, 260 based on Foata normal form. 8/2872 useless extension candidates. Maximal degree in co-relation 20596. Up to 2657 conditions per place. [2024-06-28 03:06:36,763 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 578 selfloop transitions, 43 changer transitions 22/645 dead transitions. [2024-06-28 03:06:36,763 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 637 places, 645 transitions, 8553 flow [2024-06-28 03:06:36,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-28 03:06:36,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-28 03:06:36,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 158 transitions. [2024-06-28 03:06:36,764 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35267857142857145 [2024-06-28 03:06:36,764 INFO L175 Difference]: Start difference. First operand has 627 places, 616 transitions, 7114 flow. Second operand 14 states and 158 transitions. [2024-06-28 03:06:36,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 637 places, 645 transitions, 8553 flow [2024-06-28 03:06:41,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 623 places, 645 transitions, 8449 flow, removed 2 selfloop flow, removed 14 redundant places. [2024-06-28 03:06:41,774 INFO L231 Difference]: Finished difference. Result has 625 places, 607 transitions, 6986 flow [2024-06-28 03:06:41,774 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7010, PETRI_DIFFERENCE_MINUEND_PLACES=610, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=616, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=573, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=6986, PETRI_PLACES=625, PETRI_TRANSITIONS=607} [2024-06-28 03:06:41,774 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 594 predicate places. [2024-06-28 03:06:41,774 INFO L495 AbstractCegarLoop]: Abstraction has has 625 places, 607 transitions, 6986 flow [2024-06-28 03:06:41,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:06:41,775 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:06:41,775 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:06:41,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable229 [2024-06-28 03:06:41,775 INFO L420 AbstractCegarLoop]: === Iteration 231 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:06:41,775 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:06:41,775 INFO L85 PathProgramCache]: Analyzing trace with hash 2146521490, now seen corresponding path program 5 times [2024-06-28 03:06:41,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:06:41,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170512256] [2024-06-28 03:06:41,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:06:41,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:06:41,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:06:42,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:06:42,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:06:42,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170512256] [2024-06-28 03:06:42,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170512256] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:06:42,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:06:42,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 03:06:42,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858595027] [2024-06-28 03:06:42,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:06:42,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 03:06:42,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:06:42,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 03:06:42,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-06-28 03:06:42,981 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 03:06:42,981 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 625 places, 607 transitions, 6986 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:06:42,981 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:06:42,981 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 03:06:42,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:06:43,896 INFO L124 PetriNetUnfolderBase]: 1532/2834 cut-off events. [2024-06-28 03:06:43,896 INFO L125 PetriNetUnfolderBase]: For 844765/844765 co-relation queries the response was YES. [2024-06-28 03:06:43,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20778 conditions, 2834 events. 1532/2834 cut-off events. For 844765/844765 co-relation queries the response was YES. Maximal size of possible extension queue 291. Compared 18850 event pairs, 266 based on Foata normal form. 10/2843 useless extension candidates. Maximal degree in co-relation 20532. Up to 2669 conditions per place. [2024-06-28 03:06:43,946 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 577 selfloop transitions, 34 changer transitions 18/631 dead transitions. [2024-06-28 03:06:43,946 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 630 places, 631 transitions, 8482 flow [2024-06-28 03:06:43,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 03:06:43,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 03:06:43,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 142 transitions. [2024-06-28 03:06:43,947 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34134615384615385 [2024-06-28 03:06:43,947 INFO L175 Difference]: Start difference. First operand has 625 places, 607 transitions, 6986 flow. Second operand 13 states and 142 transitions. [2024-06-28 03:06:43,947 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 630 places, 631 transitions, 8482 flow [2024-06-28 03:06:48,657 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 612 places, 631 transitions, 8153 flow, removed 7 selfloop flow, removed 18 redundant places. [2024-06-28 03:06:48,663 INFO L231 Difference]: Finished difference. Result has 613 places, 599 transitions, 6647 flow [2024-06-28 03:06:48,663 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6659, PETRI_DIFFERENCE_MINUEND_PLACES=600, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=607, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=573, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=6647, PETRI_PLACES=613, PETRI_TRANSITIONS=599} [2024-06-28 03:06:48,664 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 582 predicate places. [2024-06-28 03:06:48,664 INFO L495 AbstractCegarLoop]: Abstraction has has 613 places, 599 transitions, 6647 flow [2024-06-28 03:06:48,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:06:48,664 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:06:48,664 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:06:48,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable230 [2024-06-28 03:06:48,664 INFO L420 AbstractCegarLoop]: === Iteration 232 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:06:48,665 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:06:48,665 INFO L85 PathProgramCache]: Analyzing trace with hash 2142052840, now seen corresponding path program 6 times [2024-06-28 03:06:48,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:06:48,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034152703] [2024-06-28 03:06:48,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:06:48,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:06:48,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:06:49,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:06:49,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:06:49,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034152703] [2024-06-28 03:06:49,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034152703] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:06:49,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:06:49,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 03:06:49,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436899510] [2024-06-28 03:06:49,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:06:49,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 03:06:49,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:06:49,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 03:06:49,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-06-28 03:06:49,796 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 03:06:49,797 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 613 places, 599 transitions, 6647 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:06:49,797 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:06:49,797 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 03:06:49,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:06:50,679 INFO L124 PetriNetUnfolderBase]: 1484/2742 cut-off events. [2024-06-28 03:06:50,680 INFO L125 PetriNetUnfolderBase]: For 615416/615416 co-relation queries the response was YES. [2024-06-28 03:06:50,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17403 conditions, 2742 events. 1484/2742 cut-off events. For 615416/615416 co-relation queries the response was YES. Maximal size of possible extension queue 288. Compared 18186 event pairs, 247 based on Foata normal form. 10/2751 useless extension candidates. Maximal degree in co-relation 17165. Up to 2586 conditions per place. [2024-06-28 03:06:50,725 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 573 selfloop transitions, 35 changer transitions 13/623 dead transitions. [2024-06-28 03:06:50,726 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 618 places, 623 transitions, 8125 flow [2024-06-28 03:06:50,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 03:06:50,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 03:06:50,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 142 transitions. [2024-06-28 03:06:50,726 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34134615384615385 [2024-06-28 03:06:50,727 INFO L175 Difference]: Start difference. First operand has 613 places, 599 transitions, 6647 flow. Second operand 13 states and 142 transitions. [2024-06-28 03:06:50,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 618 places, 623 transitions, 8125 flow [2024-06-28 03:06:53,168 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 608 places, 623 transitions, 8053 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-28 03:06:53,174 INFO L231 Difference]: Finished difference. Result has 609 places, 595 transitions, 6624 flow [2024-06-28 03:06:53,174 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6575, PETRI_DIFFERENCE_MINUEND_PLACES=596, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=599, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=564, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=6624, PETRI_PLACES=609, PETRI_TRANSITIONS=595} [2024-06-28 03:06:53,175 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 578 predicate places. [2024-06-28 03:06:53,175 INFO L495 AbstractCegarLoop]: Abstraction has has 609 places, 595 transitions, 6624 flow [2024-06-28 03:06:53,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:06:53,175 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:06:53,175 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:06:53,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable231 [2024-06-28 03:06:53,175 INFO L420 AbstractCegarLoop]: === Iteration 233 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:06:53,176 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:06:53,176 INFO L85 PathProgramCache]: Analyzing trace with hash 2141932870, now seen corresponding path program 7 times [2024-06-28 03:06:53,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:06:53,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647405631] [2024-06-28 03:06:53,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:06:53,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:06:53,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:06:54,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:06:54,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:06:54,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647405631] [2024-06-28 03:06:54,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647405631] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:06:54,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:06:54,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 03:06:54,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379367504] [2024-06-28 03:06:54,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:06:54,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 03:06:54,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:06:54,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 03:06:54,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-28 03:06:54,490 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 03:06:54,491 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 609 places, 595 transitions, 6624 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:06:54,491 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:06:54,491 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 03:06:54,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:06:55,309 INFO L124 PetriNetUnfolderBase]: 1449/2673 cut-off events. [2024-06-28 03:06:55,309 INFO L125 PetriNetUnfolderBase]: For 407522/407522 co-relation queries the response was YES. [2024-06-28 03:06:55,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15152 conditions, 2673 events. 1449/2673 cut-off events. For 407522/407522 co-relation queries the response was YES. Maximal size of possible extension queue 285. Compared 17695 event pairs, 223 based on Foata normal form. 8/2680 useless extension candidates. Maximal degree in co-relation 14915. Up to 2522 conditions per place. [2024-06-28 03:06:55,354 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 565 selfloop transitions, 21 changer transitions 31/619 dead transitions. [2024-06-28 03:06:55,354 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 615 places, 619 transitions, 7996 flow [2024-06-28 03:06:55,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 03:06:55,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 03:06:55,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 140 transitions. [2024-06-28 03:06:55,355 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33653846153846156 [2024-06-28 03:06:55,355 INFO L175 Difference]: Start difference. First operand has 609 places, 595 transitions, 6624 flow. Second operand 13 states and 140 transitions. [2024-06-28 03:06:55,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 615 places, 619 transitions, 7996 flow [2024-06-28 03:06:57,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 603 places, 619 transitions, 7910 flow, removed 8 selfloop flow, removed 12 redundant places. [2024-06-28 03:06:57,228 INFO L231 Difference]: Finished difference. Result has 604 places, 578 transitions, 6410 flow [2024-06-28 03:06:57,229 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6542, PETRI_DIFFERENCE_MINUEND_PLACES=591, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=595, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=574, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=6410, PETRI_PLACES=604, PETRI_TRANSITIONS=578} [2024-06-28 03:06:57,229 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 573 predicate places. [2024-06-28 03:06:57,229 INFO L495 AbstractCegarLoop]: Abstraction has has 604 places, 578 transitions, 6410 flow [2024-06-28 03:06:57,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:06:57,229 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:06:57,229 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:06:57,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable232 [2024-06-28 03:06:57,230 INFO L420 AbstractCegarLoop]: === Iteration 234 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:06:57,230 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:06:57,230 INFO L85 PathProgramCache]: Analyzing trace with hash 1438599868, now seen corresponding path program 1 times [2024-06-28 03:06:57,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:06:57,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835541046] [2024-06-28 03:06:57,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:06:57,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:06:57,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:06:58,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:06:58,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:06:58,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835541046] [2024-06-28 03:06:58,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835541046] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:06:58,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:06:58,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:06:58,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22479881] [2024-06-28 03:06:58,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:06:58,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:06:58,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:06:58,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:06:58,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:06:58,463 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 03:06:58,463 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 604 places, 578 transitions, 6410 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:06:58,463 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:06:58,463 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 03:06:58,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:06:59,274 INFO L124 PetriNetUnfolderBase]: 1410/2589 cut-off events. [2024-06-28 03:06:59,275 INFO L125 PetriNetUnfolderBase]: For 286870/286870 co-relation queries the response was YES. [2024-06-28 03:06:59,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14587 conditions, 2589 events. 1410/2589 cut-off events. For 286870/286870 co-relation queries the response was YES. Maximal size of possible extension queue 281. Compared 17079 event pairs, 94 based on Foata normal form. 2/2590 useless extension candidates. Maximal degree in co-relation 14352. Up to 1757 conditions per place. [2024-06-28 03:06:59,320 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 396 selfloop transitions, 203 changer transitions 0/601 dead transitions. [2024-06-28 03:06:59,320 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 603 places, 601 transitions, 7682 flow [2024-06-28 03:06:59,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:06:59,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:06:59,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 151 transitions. [2024-06-28 03:06:59,321 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3932291666666667 [2024-06-28 03:06:59,321 INFO L175 Difference]: Start difference. First operand has 604 places, 578 transitions, 6410 flow. Second operand 12 states and 151 transitions. [2024-06-28 03:06:59,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 603 places, 601 transitions, 7682 flow [2024-06-28 03:07:01,511 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 581 places, 601 transitions, 7183 flow, removed 8 selfloop flow, removed 22 redundant places. [2024-06-28 03:07:01,517 INFO L231 Difference]: Finished difference. Result has 582 places, 579 transitions, 6338 flow [2024-06-28 03:07:01,517 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5913, PETRI_DIFFERENCE_MINUEND_PLACES=570, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=578, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=202, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=375, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6338, PETRI_PLACES=582, PETRI_TRANSITIONS=579} [2024-06-28 03:07:01,518 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 551 predicate places. [2024-06-28 03:07:01,518 INFO L495 AbstractCegarLoop]: Abstraction has has 582 places, 579 transitions, 6338 flow [2024-06-28 03:07:01,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:07:01,518 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:07:01,518 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:07:01,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable233 [2024-06-28 03:07:01,518 INFO L420 AbstractCegarLoop]: === Iteration 235 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:07:01,519 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:07:01,519 INFO L85 PathProgramCache]: Analyzing trace with hash 653913804, now seen corresponding path program 8 times [2024-06-28 03:07:01,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:07:01,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043720480] [2024-06-28 03:07:01,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:07:01,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:07:01,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:07:02,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:07:02,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:07:02,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043720480] [2024-06-28 03:07:02,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043720480] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:07:02,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:07:02,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 03:07:02,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951458916] [2024-06-28 03:07:02,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:07:02,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 03:07:02,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:07:02,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 03:07:02,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2024-06-28 03:07:02,779 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 03:07:02,780 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 582 places, 579 transitions, 6338 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:07:02,780 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:07:02,780 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 03:07:02,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:07:03,673 INFO L124 PetriNetUnfolderBase]: 1426/2625 cut-off events. [2024-06-28 03:07:03,673 INFO L125 PetriNetUnfolderBase]: For 424555/424555 co-relation queries the response was YES. [2024-06-28 03:07:03,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15125 conditions, 2625 events. 1426/2625 cut-off events. For 424555/424555 co-relation queries the response was YES. Maximal size of possible extension queue 281. Compared 17322 event pairs, 94 based on Foata normal form. 10/2634 useless extension candidates. Maximal degree in co-relation 14896. Up to 1613 conditions per place. [2024-06-28 03:07:03,716 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 359 selfloop transitions, 229 changer transitions 17/607 dead transitions. [2024-06-28 03:07:03,716 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 594 places, 607 transitions, 7794 flow [2024-06-28 03:07:03,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 03:07:03,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 03:07:03,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 167 transitions. [2024-06-28 03:07:03,717 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4014423076923077 [2024-06-28 03:07:03,717 INFO L175 Difference]: Start difference. First operand has 582 places, 579 transitions, 6338 flow. Second operand 13 states and 167 transitions. [2024-06-28 03:07:03,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 594 places, 607 transitions, 7794 flow [2024-06-28 03:07:06,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 584 places, 607 transitions, 7385 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-28 03:07:06,256 INFO L231 Difference]: Finished difference. Result has 585 places, 570 transitions, 6342 flow [2024-06-28 03:07:06,256 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5929, PETRI_DIFFERENCE_MINUEND_PLACES=572, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=579, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=229, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=350, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=6342, PETRI_PLACES=585, PETRI_TRANSITIONS=570} [2024-06-28 03:07:06,256 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 554 predicate places. [2024-06-28 03:07:06,256 INFO L495 AbstractCegarLoop]: Abstraction has has 585 places, 570 transitions, 6342 flow [2024-06-28 03:07:06,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:07:06,257 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:07:06,257 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:07:06,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable234 [2024-06-28 03:07:06,257 INFO L420 AbstractCegarLoop]: === Iteration 236 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:07:06,257 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:07:06,257 INFO L85 PathProgramCache]: Analyzing trace with hash 1272186164, now seen corresponding path program 9 times [2024-06-28 03:07:06,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:07:06,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085884566] [2024-06-28 03:07:06,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:07:06,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:07:06,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:07:07,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:07:07,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:07:07,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085884566] [2024-06-28 03:07:07,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085884566] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:07:07,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:07:07,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 03:07:07,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563446186] [2024-06-28 03:07:07,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:07:07,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 03:07:07,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:07:07,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 03:07:07,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2024-06-28 03:07:07,674 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 03:07:07,674 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 585 places, 570 transitions, 6342 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:07:07,675 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:07:07,675 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 03:07:07,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:07:08,497 INFO L124 PetriNetUnfolderBase]: 1394/2577 cut-off events. [2024-06-28 03:07:08,497 INFO L125 PetriNetUnfolderBase]: For 428380/428380 co-relation queries the response was YES. [2024-06-28 03:07:08,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15036 conditions, 2577 events. 1394/2577 cut-off events. For 428380/428380 co-relation queries the response was YES. Maximal size of possible extension queue 277. Compared 17011 event pairs, 98 based on Foata normal form. 10/2586 useless extension candidates. Maximal degree in co-relation 14806. Up to 1661 conditions per place. [2024-06-28 03:07:08,540 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 372 selfloop transitions, 205 changer transitions 18/597 dead transitions. [2024-06-28 03:07:08,541 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 594 places, 597 transitions, 7774 flow [2024-06-28 03:07:08,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 03:07:08,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 03:07:08,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 162 transitions. [2024-06-28 03:07:08,542 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3894230769230769 [2024-06-28 03:07:08,542 INFO L175 Difference]: Start difference. First operand has 585 places, 570 transitions, 6342 flow. Second operand 13 states and 162 transitions. [2024-06-28 03:07:08,542 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 594 places, 597 transitions, 7774 flow [2024-06-28 03:07:10,606 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 582 places, 597 transitions, 7304 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-06-28 03:07:10,612 INFO L231 Difference]: Finished difference. Result has 583 places, 560 transitions, 6220 flow [2024-06-28 03:07:10,612 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5876, PETRI_DIFFERENCE_MINUEND_PLACES=570, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=570, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=205, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=365, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=6220, PETRI_PLACES=583, PETRI_TRANSITIONS=560} [2024-06-28 03:07:10,613 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 552 predicate places. [2024-06-28 03:07:10,613 INFO L495 AbstractCegarLoop]: Abstraction has has 583 places, 560 transitions, 6220 flow [2024-06-28 03:07:10,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:07:10,613 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:07:10,613 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:07:10,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable235 [2024-06-28 03:07:10,613 INFO L420 AbstractCegarLoop]: === Iteration 237 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:07:10,614 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:07:10,614 INFO L85 PathProgramCache]: Analyzing trace with hash 1272181514, now seen corresponding path program 10 times [2024-06-28 03:07:10,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:07:10,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776276098] [2024-06-28 03:07:10,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:07:10,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:07:10,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:07:11,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:07:11,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:07:11,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776276098] [2024-06-28 03:07:11,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776276098] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:07:11,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:07:11,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 03:07:11,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945273121] [2024-06-28 03:07:11,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:07:11,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 03:07:11,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:07:11,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 03:07:11,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2024-06-28 03:07:11,897 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 03:07:11,897 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 583 places, 560 transitions, 6220 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:07:11,897 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:07:11,898 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 03:07:11,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:07:12,676 INFO L124 PetriNetUnfolderBase]: 1358/2521 cut-off events. [2024-06-28 03:07:12,676 INFO L125 PetriNetUnfolderBase]: For 381895/381895 co-relation queries the response was YES. [2024-06-28 03:07:12,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14553 conditions, 2521 events. 1358/2521 cut-off events. For 381895/381895 co-relation queries the response was YES. Maximal size of possible extension queue 272. Compared 16720 event pairs, 94 based on Foata normal form. 8/2528 useless extension candidates. Maximal degree in co-relation 14324. Up to 1645 conditions per place. [2024-06-28 03:07:12,716 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 369 selfloop transitions, 195 changer transitions 20/586 dead transitions. [2024-06-28 03:07:12,716 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 592 places, 586 transitions, 7532 flow [2024-06-28 03:07:12,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 03:07:12,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 03:07:12,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 159 transitions. [2024-06-28 03:07:12,717 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38221153846153844 [2024-06-28 03:07:12,717 INFO L175 Difference]: Start difference. First operand has 583 places, 560 transitions, 6220 flow. Second operand 13 states and 159 transitions. [2024-06-28 03:07:12,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 592 places, 586 transitions, 7532 flow [2024-06-28 03:07:14,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 579 places, 586 transitions, 7103 flow, removed 7 selfloop flow, removed 13 redundant places. [2024-06-28 03:07:14,773 INFO L231 Difference]: Finished difference. Result has 580 places, 549 transitions, 6072 flow [2024-06-28 03:07:14,774 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5791, PETRI_DIFFERENCE_MINUEND_PLACES=567, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=560, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=195, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=365, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=6072, PETRI_PLACES=580, PETRI_TRANSITIONS=549} [2024-06-28 03:07:14,774 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 549 predicate places. [2024-06-28 03:07:14,774 INFO L495 AbstractCegarLoop]: Abstraction has has 580 places, 549 transitions, 6072 flow [2024-06-28 03:07:14,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:07:14,774 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:07:14,774 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:07:14,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable236 [2024-06-28 03:07:14,775 INFO L420 AbstractCegarLoop]: === Iteration 238 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:07:14,775 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:07:14,775 INFO L85 PathProgramCache]: Analyzing trace with hash 1438415294, now seen corresponding path program 11 times [2024-06-28 03:07:14,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:07:14,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825785639] [2024-06-28 03:07:14,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:07:14,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:07:14,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:07:15,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:07:15,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:07:15,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825785639] [2024-06-28 03:07:15,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825785639] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:07:15,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:07:15,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 03:07:15,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329679168] [2024-06-28 03:07:15,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:07:15,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 03:07:15,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:07:15,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 03:07:15,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2024-06-28 03:07:15,892 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 03:07:15,892 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 580 places, 549 transitions, 6072 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:07:15,893 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:07:15,893 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 03:07:15,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:07:16,669 INFO L124 PetriNetUnfolderBase]: 1367/2540 cut-off events. [2024-06-28 03:07:16,669 INFO L125 PetriNetUnfolderBase]: For 564492/564492 co-relation queries the response was YES. [2024-06-28 03:07:16,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16873 conditions, 2540 events. 1367/2540 cut-off events. For 564492/564492 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 16635 event pairs, 105 based on Foata normal form. 8/2547 useless extension candidates. Maximal degree in co-relation 16646. Up to 1497 conditions per place. [2024-06-28 03:07:16,714 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 350 selfloop transitions, 215 changer transitions 14/581 dead transitions. [2024-06-28 03:07:16,715 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 584 places, 581 transitions, 7946 flow [2024-06-28 03:07:16,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 03:07:16,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 03:07:16,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 168 transitions. [2024-06-28 03:07:16,716 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40384615384615385 [2024-06-28 03:07:16,716 INFO L175 Difference]: Start difference. First operand has 580 places, 549 transitions, 6072 flow. Second operand 13 states and 168 transitions. [2024-06-28 03:07:16,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 584 places, 581 transitions, 7946 flow [2024-06-28 03:07:19,997 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 569 places, 581 transitions, 7343 flow, removed 33 selfloop flow, removed 15 redundant places. [2024-06-28 03:07:20,003 INFO L231 Difference]: Finished difference. Result has 570 places, 540 transitions, 5809 flow [2024-06-28 03:07:20,003 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5485, PETRI_DIFFERENCE_MINUEND_PLACES=557, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=549, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=215, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=334, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=5809, PETRI_PLACES=570, PETRI_TRANSITIONS=540} [2024-06-28 03:07:20,003 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 539 predicate places. [2024-06-28 03:07:20,004 INFO L495 AbstractCegarLoop]: Abstraction has has 570 places, 540 transitions, 5809 flow [2024-06-28 03:07:20,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:07:20,004 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:07:20,004 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:07:20,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable237 [2024-06-28 03:07:20,004 INFO L420 AbstractCegarLoop]: === Iteration 239 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:07:20,004 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:07:20,005 INFO L85 PathProgramCache]: Analyzing trace with hash 1438592924, now seen corresponding path program 12 times [2024-06-28 03:07:20,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:07:20,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055824741] [2024-06-28 03:07:20,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:07:20,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:07:20,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:07:21,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:07:21,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:07:21,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055824741] [2024-06-28 03:07:21,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055824741] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:07:21,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:07:21,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 03:07:21,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574805588] [2024-06-28 03:07:21,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:07:21,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 03:07:21,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:07:21,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 03:07:21,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2024-06-28 03:07:21,310 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 03:07:21,311 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 570 places, 540 transitions, 5809 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:07:21,311 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:07:21,311 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 03:07:21,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:07:22,190 INFO L124 PetriNetUnfolderBase]: 1387/2580 cut-off events. [2024-06-28 03:07:22,191 INFO L125 PetriNetUnfolderBase]: For 691596/691596 co-relation queries the response was YES. [2024-06-28 03:07:22,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16852 conditions, 2580 events. 1387/2580 cut-off events. For 691596/691596 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 16963 event pairs, 112 based on Foata normal form. 16/2595 useless extension candidates. Maximal degree in co-relation 16630. Up to 1611 conditions per place. [2024-06-28 03:07:22,244 INFO L140 encePairwiseOnDemand]: 18/32 looper letters, 355 selfloop transitions, 187 changer transitions 32/576 dead transitions. [2024-06-28 03:07:22,244 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 579 places, 576 transitions, 7257 flow [2024-06-28 03:07:22,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 03:07:22,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 03:07:22,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 165 transitions. [2024-06-28 03:07:22,245 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39663461538461536 [2024-06-28 03:07:22,245 INFO L175 Difference]: Start difference. First operand has 570 places, 540 transitions, 5809 flow. Second operand 13 states and 165 transitions. [2024-06-28 03:07:22,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 579 places, 576 transitions, 7257 flow [2024-06-28 03:07:25,442 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 566 places, 576 transitions, 6795 flow, removed 10 selfloop flow, removed 13 redundant places. [2024-06-28 03:07:25,448 INFO L231 Difference]: Finished difference. Result has 568 places, 526 transitions, 5588 flow [2024-06-28 03:07:25,448 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5363, PETRI_DIFFERENCE_MINUEND_PLACES=554, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=540, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=187, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=353, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=5588, PETRI_PLACES=568, PETRI_TRANSITIONS=526} [2024-06-28 03:07:25,448 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 537 predicate places. [2024-06-28 03:07:25,448 INFO L495 AbstractCegarLoop]: Abstraction has has 568 places, 526 transitions, 5588 flow [2024-06-28 03:07:25,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:07:25,449 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:07:25,449 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:07:25,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable238 [2024-06-28 03:07:25,449 INFO L420 AbstractCegarLoop]: === Iteration 240 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:07:25,449 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:07:25,449 INFO L85 PathProgramCache]: Analyzing trace with hash 483206724, now seen corresponding path program 13 times [2024-06-28 03:07:25,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:07:25,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771869542] [2024-06-28 03:07:25,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:07:25,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:07:25,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:07:26,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:07:26,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:07:26,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771869542] [2024-06-28 03:07:26,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771869542] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:07:26,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:07:26,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 03:07:26,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521183559] [2024-06-28 03:07:26,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:07:26,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 03:07:26,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:07:26,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 03:07:26,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2024-06-28 03:07:26,775 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 03:07:26,776 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 568 places, 526 transitions, 5588 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:07:26,776 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:07:26,776 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 03:07:26,776 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:07:27,644 INFO L124 PetriNetUnfolderBase]: 1340/2503 cut-off events. [2024-06-28 03:07:27,644 INFO L125 PetriNetUnfolderBase]: For 721542/721542 co-relation queries the response was YES. [2024-06-28 03:07:27,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18387 conditions, 2503 events. 1340/2503 cut-off events. For 721542/721542 co-relation queries the response was YES. Maximal size of possible extension queue 256. Compared 16401 event pairs, 130 based on Foata normal form. 8/2510 useless extension candidates. Maximal degree in co-relation 18166. Up to 1524 conditions per place. [2024-06-28 03:07:27,686 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 344 selfloop transitions, 203 changer transitions 10/559 dead transitions. [2024-06-28 03:07:27,686 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 574 places, 559 transitions, 7406 flow [2024-06-28 03:07:27,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 03:07:27,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 03:07:27,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 168 transitions. [2024-06-28 03:07:27,697 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40384615384615385 [2024-06-28 03:07:27,697 INFO L175 Difference]: Start difference. First operand has 568 places, 526 transitions, 5588 flow. Second operand 13 states and 168 transitions. [2024-06-28 03:07:27,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 574 places, 559 transitions, 7406 flow [2024-06-28 03:07:32,454 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 561 places, 559 transitions, 6990 flow, removed 17 selfloop flow, removed 13 redundant places. [2024-06-28 03:07:32,459 INFO L231 Difference]: Finished difference. Result has 562 places, 521 transitions, 5557 flow [2024-06-28 03:07:32,460 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5176, PETRI_DIFFERENCE_MINUEND_PLACES=549, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=526, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=203, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=323, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=5557, PETRI_PLACES=562, PETRI_TRANSITIONS=521} [2024-06-28 03:07:32,460 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 531 predicate places. [2024-06-28 03:07:32,460 INFO L495 AbstractCegarLoop]: Abstraction has has 562 places, 521 transitions, 5557 flow [2024-06-28 03:07:32,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:07:32,460 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:07:32,460 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:07:32,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable239 [2024-06-28 03:07:32,461 INFO L420 AbstractCegarLoop]: === Iteration 241 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:07:32,461 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:07:32,461 INFO L85 PathProgramCache]: Analyzing trace with hash 483211374, now seen corresponding path program 14 times [2024-06-28 03:07:32,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:07:32,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371796333] [2024-06-28 03:07:32,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:07:32,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:07:32,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:07:33,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:07:33,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:07:33,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371796333] [2024-06-28 03:07:33,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371796333] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:07:33,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:07:33,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 03:07:33,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307444153] [2024-06-28 03:07:33,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:07:33,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 03:07:33,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:07:33,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 03:07:33,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2024-06-28 03:07:33,542 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 03:07:33,542 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 562 places, 521 transitions, 5557 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:07:33,542 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:07:33,542 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 03:07:33,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:07:34,332 INFO L124 PetriNetUnfolderBase]: 1303/2436 cut-off events. [2024-06-28 03:07:34,333 INFO L125 PetriNetUnfolderBase]: For 573350/573350 co-relation queries the response was YES. [2024-06-28 03:07:34,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15968 conditions, 2436 events. 1303/2436 cut-off events. For 573350/573350 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 15945 event pairs, 109 based on Foata normal form. 10/2445 useless extension candidates. Maximal degree in co-relation 15750. Up to 1476 conditions per place. [2024-06-28 03:07:34,374 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 315 selfloop transitions, 208 changer transitions 25/550 dead transitions. [2024-06-28 03:07:34,374 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 573 places, 550 transitions, 6891 flow [2024-06-28 03:07:34,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-28 03:07:34,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-28 03:07:34,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 172 transitions. [2024-06-28 03:07:34,375 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38392857142857145 [2024-06-28 03:07:34,375 INFO L175 Difference]: Start difference. First operand has 562 places, 521 transitions, 5557 flow. Second operand 14 states and 172 transitions. [2024-06-28 03:07:34,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 573 places, 550 transitions, 6891 flow [2024-06-28 03:07:37,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 561 places, 550 transitions, 6489 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-06-28 03:07:37,287 INFO L231 Difference]: Finished difference. Result has 562 places, 505 transitions, 5493 flow [2024-06-28 03:07:37,287 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5155, PETRI_DIFFERENCE_MINUEND_PLACES=548, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=521, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=208, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=313, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=5493, PETRI_PLACES=562, PETRI_TRANSITIONS=505} [2024-06-28 03:07:37,287 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 531 predicate places. [2024-06-28 03:07:37,287 INFO L495 AbstractCegarLoop]: Abstraction has has 562 places, 505 transitions, 5493 flow [2024-06-28 03:07:37,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:07:37,288 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:07:37,288 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:07:37,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable240 [2024-06-28 03:07:37,288 INFO L420 AbstractCegarLoop]: === Iteration 242 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:07:37,288 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:07:37,289 INFO L85 PathProgramCache]: Analyzing trace with hash 660580478, now seen corresponding path program 2 times [2024-06-28 03:07:37,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:07:37,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742193572] [2024-06-28 03:07:37,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:07:37,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:07:37,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:07:38,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:07:38,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:07:38,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742193572] [2024-06-28 03:07:38,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742193572] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:07:38,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:07:38,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 03:07:38,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023261653] [2024-06-28 03:07:38,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:07:38,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 03:07:38,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:07:38,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 03:07:38,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2024-06-28 03:07:38,461 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 03:07:38,462 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 562 places, 505 transitions, 5493 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:07:38,462 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:07:38,462 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 03:07:38,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:07:39,137 INFO L124 PetriNetUnfolderBase]: 1255/2348 cut-off events. [2024-06-28 03:07:39,137 INFO L125 PetriNetUnfolderBase]: For 427844/427844 co-relation queries the response was YES. [2024-06-28 03:07:39,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15417 conditions, 2348 events. 1255/2348 cut-off events. For 427844/427844 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 15357 event pairs, 115 based on Foata normal form. 2/2349 useless extension candidates. Maximal degree in co-relation 15200. Up to 1564 conditions per place. [2024-06-28 03:07:39,175 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 341 selfloop transitions, 184 changer transitions 0/527 dead transitions. [2024-06-28 03:07:39,175 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 561 places, 527 transitions, 6611 flow [2024-06-28 03:07:39,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:07:39,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:07:39,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 146 transitions. [2024-06-28 03:07:39,176 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3802083333333333 [2024-06-28 03:07:39,177 INFO L175 Difference]: Start difference. First operand has 562 places, 505 transitions, 5493 flow. Second operand 12 states and 146 transitions. [2024-06-28 03:07:39,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 561 places, 527 transitions, 6611 flow [2024-06-28 03:07:41,693 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 545 places, 527 transitions, 6165 flow, removed 15 selfloop flow, removed 16 redundant places. [2024-06-28 03:07:41,698 INFO L231 Difference]: Finished difference. Result has 546 places, 506 transitions, 5434 flow [2024-06-28 03:07:41,698 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5047, PETRI_DIFFERENCE_MINUEND_PLACES=534, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=505, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=183, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=321, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5434, PETRI_PLACES=546, PETRI_TRANSITIONS=506} [2024-06-28 03:07:41,698 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 515 predicate places. [2024-06-28 03:07:41,698 INFO L495 AbstractCegarLoop]: Abstraction has has 546 places, 506 transitions, 5434 flow [2024-06-28 03:07:41,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:07:41,699 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:07:41,699 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:07:41,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable241 [2024-06-28 03:07:41,699 INFO L420 AbstractCegarLoop]: === Iteration 243 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:07:41,699 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:07:41,700 INFO L85 PathProgramCache]: Analyzing trace with hash 1215059666, now seen corresponding path program 15 times [2024-06-28 03:07:41,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:07:41,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448618782] [2024-06-28 03:07:41,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:07:41,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:07:41,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:07:42,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:07:42,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:07:42,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448618782] [2024-06-28 03:07:42,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448618782] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:07:42,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:07:42,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 03:07:42,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045424273] [2024-06-28 03:07:42,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:07:42,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 03:07:42,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:07:42,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 03:07:42,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2024-06-28 03:07:42,823 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 03:07:42,823 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 546 places, 506 transitions, 5434 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:07:42,823 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:07:42,824 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 03:07:42,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:07:43,602 INFO L124 PetriNetUnfolderBase]: 1250/2345 cut-off events. [2024-06-28 03:07:43,602 INFO L125 PetriNetUnfolderBase]: For 464410/464410 co-relation queries the response was YES. [2024-06-28 03:07:43,631 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13298 conditions, 2345 events. 1250/2345 cut-off events. For 464410/464410 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 15356 event pairs, 110 based on Foata normal form. 16/2360 useless extension candidates. Maximal degree in co-relation 13086. Up to 1445 conditions per place. [2024-06-28 03:07:43,637 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 329 selfloop transitions, 171 changer transitions 31/533 dead transitions. [2024-06-28 03:07:43,637 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 558 places, 533 transitions, 6710 flow [2024-06-28 03:07:43,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 03:07:43,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 03:07:43,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 160 transitions. [2024-06-28 03:07:43,638 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38461538461538464 [2024-06-28 03:07:43,638 INFO L175 Difference]: Start difference. First operand has 546 places, 506 transitions, 5434 flow. Second operand 13 states and 160 transitions. [2024-06-28 03:07:43,638 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 558 places, 533 transitions, 6710 flow [2024-06-28 03:07:45,168 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 548 places, 533 transitions, 6339 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-28 03:07:45,173 INFO L231 Difference]: Finished difference. Result has 549 places, 485 transitions, 5230 flow [2024-06-28 03:07:45,173 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5063, PETRI_DIFFERENCE_MINUEND_PLACES=536, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=506, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=171, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=335, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=5230, PETRI_PLACES=549, PETRI_TRANSITIONS=485} [2024-06-28 03:07:45,174 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 518 predicate places. [2024-06-28 03:07:45,174 INFO L495 AbstractCegarLoop]: Abstraction has has 549 places, 485 transitions, 5230 flow [2024-06-28 03:07:45,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:07:45,174 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:07:45,174 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:07:45,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable242 [2024-06-28 03:07:45,174 INFO L420 AbstractCegarLoop]: === Iteration 244 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:07:45,175 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:07:45,175 INFO L85 PathProgramCache]: Analyzing trace with hash 660588848, now seen corresponding path program 3 times [2024-06-28 03:07:45,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:07:45,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130168744] [2024-06-28 03:07:45,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:07:45,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:07:45,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:07:46,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:07:46,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:07:46,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130168744] [2024-06-28 03:07:46,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130168744] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:07:46,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:07:46,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 03:07:46,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392447028] [2024-06-28 03:07:46,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:07:46,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 03:07:46,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:07:46,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 03:07:46,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2024-06-28 03:07:46,243 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 03:07:46,243 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 549 places, 485 transitions, 5230 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:07:46,243 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:07:46,243 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 03:07:46,243 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:07:46,859 INFO L124 PetriNetUnfolderBase]: 1170/2213 cut-off events. [2024-06-28 03:07:46,859 INFO L125 PetriNetUnfolderBase]: For 337543/337543 co-relation queries the response was YES. [2024-06-28 03:07:46,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12481 conditions, 2213 events. 1170/2213 cut-off events. For 337543/337543 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 14482 event pairs, 96 based on Foata normal form. 8/2220 useless extension candidates. Maximal degree in co-relation 12268. Up to 1429 conditions per place. [2024-06-28 03:07:46,894 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 325 selfloop transitions, 159 changer transitions 23/509 dead transitions. [2024-06-28 03:07:46,894 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 553 places, 509 transitions, 6392 flow [2024-06-28 03:07:46,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:07:46,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:07:46,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 146 transitions. [2024-06-28 03:07:46,895 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3802083333333333 [2024-06-28 03:07:46,895 INFO L175 Difference]: Start difference. First operand has 549 places, 485 transitions, 5230 flow. Second operand 12 states and 146 transitions. [2024-06-28 03:07:46,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 553 places, 509 transitions, 6392 flow [2024-06-28 03:07:48,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 537 places, 509 transitions, 5954 flow, removed 9 selfloop flow, removed 16 redundant places. [2024-06-28 03:07:48,349 INFO L231 Difference]: Finished difference. Result has 538 places, 472 transitions, 4984 flow [2024-06-28 03:07:48,349 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4796, PETRI_DIFFERENCE_MINUEND_PLACES=526, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=485, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=159, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=326, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4984, PETRI_PLACES=538, PETRI_TRANSITIONS=472} [2024-06-28 03:07:48,349 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 507 predicate places. [2024-06-28 03:07:48,349 INFO L495 AbstractCegarLoop]: Abstraction has has 538 places, 472 transitions, 4984 flow [2024-06-28 03:07:48,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:07:48,349 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:07:48,350 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:07:48,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable243 [2024-06-28 03:07:48,350 INFO L420 AbstractCegarLoop]: === Iteration 245 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:07:48,350 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:07:48,350 INFO L85 PathProgramCache]: Analyzing trace with hash 1267597544, now seen corresponding path program 16 times [2024-06-28 03:07:48,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:07:48,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616297507] [2024-06-28 03:07:48,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:07:48,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:07:48,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:07:49,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:07:49,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:07:49,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616297507] [2024-06-28 03:07:49,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616297507] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:07:49,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:07:49,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 03:07:49,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831213963] [2024-06-28 03:07:49,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:07:49,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 03:07:49,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:07:49,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 03:07:49,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2024-06-28 03:07:49,620 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 03:07:49,620 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 538 places, 472 transitions, 4984 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:07:49,620 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:07:49,621 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 03:07:49,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:07:50,336 INFO L124 PetriNetUnfolderBase]: 1154/2177 cut-off events. [2024-06-28 03:07:50,337 INFO L125 PetriNetUnfolderBase]: For 326619/326619 co-relation queries the response was YES. [2024-06-28 03:07:50,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12023 conditions, 2177 events. 1154/2177 cut-off events. For 326619/326619 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 14155 event pairs, 229 based on Foata normal form. 8/2184 useless extension candidates. Maximal degree in co-relation 11814. Up to 1727 conditions per place. [2024-06-28 03:07:50,370 INFO L140 encePairwiseOnDemand]: 18/32 looper letters, 391 selfloop transitions, 90 changer transitions 20/503 dead transitions. [2024-06-28 03:07:50,370 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 540 places, 503 transitions, 6152 flow [2024-06-28 03:07:50,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-28 03:07:50,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-28 03:07:50,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 157 transitions. [2024-06-28 03:07:50,371 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35044642857142855 [2024-06-28 03:07:50,371 INFO L175 Difference]: Start difference. First operand has 538 places, 472 transitions, 4984 flow. Second operand 14 states and 157 transitions. [2024-06-28 03:07:50,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 540 places, 503 transitions, 6152 flow [2024-06-28 03:07:51,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 527 places, 503 transitions, 5822 flow, removed 6 selfloop flow, removed 13 redundant places. [2024-06-28 03:07:51,669 INFO L231 Difference]: Finished difference. Result has 530 places, 467 transitions, 4788 flow [2024-06-28 03:07:51,670 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4654, PETRI_DIFFERENCE_MINUEND_PLACES=514, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=472, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=382, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=4788, PETRI_PLACES=530, PETRI_TRANSITIONS=467} [2024-06-28 03:07:51,670 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 499 predicate places. [2024-06-28 03:07:51,670 INFO L495 AbstractCegarLoop]: Abstraction has has 530 places, 467 transitions, 4788 flow [2024-06-28 03:07:51,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:07:51,670 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:07:51,670 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:07:51,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable244 [2024-06-28 03:07:51,671 INFO L420 AbstractCegarLoop]: === Iteration 246 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:07:51,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:07:51,671 INFO L85 PathProgramCache]: Analyzing trace with hash -1422117602, now seen corresponding path program 4 times [2024-06-28 03:07:51,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:07:51,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72070929] [2024-06-28 03:07:51,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:07:51,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:07:51,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:07:53,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:07:53,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:07:53,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72070929] [2024-06-28 03:07:53,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72070929] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:07:53,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:07:53,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 03:07:53,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40782559] [2024-06-28 03:07:53,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:07:53,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 03:07:53,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:07:53,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 03:07:53,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2024-06-28 03:07:53,299 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 03:07:53,299 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 530 places, 467 transitions, 4788 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:07:53,299 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:07:53,299 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 03:07:53,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:07:53,972 INFO L124 PetriNetUnfolderBase]: 1131/2125 cut-off events. [2024-06-28 03:07:53,972 INFO L125 PetriNetUnfolderBase]: For 220365/220365 co-relation queries the response was YES. [2024-06-28 03:07:53,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11526 conditions, 2125 events. 1131/2125 cut-off events. For 220365/220365 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 13774 event pairs, 112 based on Foata normal form. 2/2126 useless extension candidates. Maximal degree in co-relation 11320. Up to 1414 conditions per place. [2024-06-28 03:07:54,004 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 341 selfloop transitions, 144 changer transitions 0/487 dead transitions. [2024-06-28 03:07:54,004 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 532 places, 487 transitions, 5818 flow [2024-06-28 03:07:54,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:07:54,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:07:54,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 143 transitions. [2024-06-28 03:07:54,005 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3723958333333333 [2024-06-28 03:07:54,005 INFO L175 Difference]: Start difference. First operand has 530 places, 467 transitions, 4788 flow. Second operand 12 states and 143 transitions. [2024-06-28 03:07:54,006 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 532 places, 487 transitions, 5818 flow [2024-06-28 03:07:55,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 519 places, 487 transitions, 5532 flow, removed 3 selfloop flow, removed 13 redundant places. [2024-06-28 03:07:55,329 INFO L231 Difference]: Finished difference. Result has 520 places, 468 transitions, 4806 flow [2024-06-28 03:07:55,330 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4502, PETRI_DIFFERENCE_MINUEND_PLACES=508, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=467, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=143, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=323, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4806, PETRI_PLACES=520, PETRI_TRANSITIONS=468} [2024-06-28 03:07:55,330 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 489 predicate places. [2024-06-28 03:07:55,330 INFO L495 AbstractCegarLoop]: Abstraction has has 520 places, 468 transitions, 4806 flow [2024-06-28 03:07:55,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:07:55,330 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:07:55,330 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:07:55,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable245 [2024-06-28 03:07:55,331 INFO L420 AbstractCegarLoop]: === Iteration 247 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:07:55,331 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:07:55,331 INFO L85 PathProgramCache]: Analyzing trace with hash -1421829302, now seen corresponding path program 5 times [2024-06-28 03:07:55,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:07:55,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428310370] [2024-06-28 03:07:55,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:07:55,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:07:55,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:07:56,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:07:56,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:07:56,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428310370] [2024-06-28 03:07:56,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428310370] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:07:56,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:07:56,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 03:07:56,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309801532] [2024-06-28 03:07:56,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:07:56,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 03:07:56,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:07:56,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 03:07:56,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2024-06-28 03:07:56,605 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 03:07:56,605 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 520 places, 468 transitions, 4806 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:07:56,605 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:07:56,605 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 03:07:56,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:07:57,143 INFO L124 PetriNetUnfolderBase]: 1142/2146 cut-off events. [2024-06-28 03:07:57,143 INFO L125 PetriNetUnfolderBase]: For 253670/253670 co-relation queries the response was YES. [2024-06-28 03:07:57,170 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12015 conditions, 2146 events. 1142/2146 cut-off events. For 253670/253670 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 13940 event pairs, 121 based on Foata normal form. 2/2147 useless extension candidates. Maximal degree in co-relation 11811. Up to 1374 conditions per place. [2024-06-28 03:07:57,175 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 344 selfloop transitions, 144 changer transitions 0/490 dead transitions. [2024-06-28 03:07:57,176 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 531 places, 490 transitions, 6212 flow [2024-06-28 03:07:57,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:07:57,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:07:57,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 146 transitions. [2024-06-28 03:07:57,177 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3802083333333333 [2024-06-28 03:07:57,177 INFO L175 Difference]: Start difference. First operand has 520 places, 468 transitions, 4806 flow. Second operand 12 states and 146 transitions. [2024-06-28 03:07:57,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 531 places, 490 transitions, 6212 flow [2024-06-28 03:07:58,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 520 places, 490 transitions, 5898 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-28 03:07:58,819 INFO L231 Difference]: Finished difference. Result has 521 places, 470 transitions, 4810 flow [2024-06-28 03:07:58,819 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4492, PETRI_DIFFERENCE_MINUEND_PLACES=509, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=468, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=143, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=325, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4810, PETRI_PLACES=521, PETRI_TRANSITIONS=470} [2024-06-28 03:07:58,819 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 490 predicate places. [2024-06-28 03:07:58,819 INFO L495 AbstractCegarLoop]: Abstraction has has 521 places, 470 transitions, 4810 flow [2024-06-28 03:07:58,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:07:58,820 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:07:58,820 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:07:58,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable246 [2024-06-28 03:07:58,820 INFO L420 AbstractCegarLoop]: === Iteration 248 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:07:58,820 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:07:58,821 INFO L85 PathProgramCache]: Analyzing trace with hash 753093196, now seen corresponding path program 17 times [2024-06-28 03:07:58,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:07:58,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429188180] [2024-06-28 03:07:58,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:07:58,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:07:58,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:08:00,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:08:00,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:08:00,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429188180] [2024-06-28 03:08:00,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429188180] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:08:00,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:08:00,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 03:08:00,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831603850] [2024-06-28 03:08:00,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:08:00,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 03:08:00,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:08:00,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 03:08:00,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2024-06-28 03:08:00,182 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 03:08:00,182 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 521 places, 470 transitions, 4810 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:08:00,182 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:08:00,182 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 03:08:00,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:08:00,964 INFO L124 PetriNetUnfolderBase]: 1183/2233 cut-off events. [2024-06-28 03:08:00,964 INFO L125 PetriNetUnfolderBase]: For 502784/502784 co-relation queries the response was YES. [2024-06-28 03:08:00,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14524 conditions, 2233 events. 1183/2233 cut-off events. For 502784/502784 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 14512 event pairs, 130 based on Foata normal form. 8/2240 useless extension candidates. Maximal degree in co-relation 14319. Up to 1394 conditions per place. [2024-06-28 03:08:00,998 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 336 selfloop transitions, 152 changer transitions 9/499 dead transitions. [2024-06-28 03:08:00,998 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 533 places, 499 transitions, 6436 flow [2024-06-28 03:08:00,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 03:08:00,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 03:08:00,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 163 transitions. [2024-06-28 03:08:00,999 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3918269230769231 [2024-06-28 03:08:00,999 INFO L175 Difference]: Start difference. First operand has 521 places, 470 transitions, 4810 flow. Second operand 13 states and 163 transitions. [2024-06-28 03:08:00,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 533 places, 499 transitions, 6436 flow [2024-06-28 03:08:03,055 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 525 places, 499 transitions, 6245 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-28 03:08:03,060 INFO L231 Difference]: Finished difference. Result has 526 places, 466 transitions, 4892 flow [2024-06-28 03:08:03,060 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4619, PETRI_DIFFERENCE_MINUEND_PLACES=513, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=470, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=152, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=318, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4892, PETRI_PLACES=526, PETRI_TRANSITIONS=466} [2024-06-28 03:08:03,061 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 495 predicate places. [2024-06-28 03:08:03,061 INFO L495 AbstractCegarLoop]: Abstraction has has 526 places, 466 transitions, 4892 flow [2024-06-28 03:08:03,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:08:03,061 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:08:03,061 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:08:03,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable247 [2024-06-28 03:08:03,061 INFO L420 AbstractCegarLoop]: === Iteration 249 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:08:03,062 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:08:03,062 INFO L85 PathProgramCache]: Analyzing trace with hash 753097846, now seen corresponding path program 18 times [2024-06-28 03:08:03,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:08:03,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25956632] [2024-06-28 03:08:03,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:08:03,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:08:03,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:08:04,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:08:04,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:08:04,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25956632] [2024-06-28 03:08:04,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25956632] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:08:04,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:08:04,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 03:08:04,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472779823] [2024-06-28 03:08:04,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:08:04,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 03:08:04,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:08:04,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 03:08:04,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2024-06-28 03:08:04,315 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 03:08:04,315 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 526 places, 466 transitions, 4892 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:08:04,316 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:08:04,316 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 03:08:04,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:08:04,996 INFO L124 PetriNetUnfolderBase]: 1148/2168 cut-off events. [2024-06-28 03:08:04,996 INFO L125 PetriNetUnfolderBase]: For 384572/384572 co-relation queries the response was YES. [2024-06-28 03:08:05,023 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12544 conditions, 2168 events. 1148/2168 cut-off events. For 384572/384572 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 14063 event pairs, 119 based on Foata normal form. 10/2177 useless extension candidates. Maximal degree in co-relation 12337. Up to 1346 conditions per place. [2024-06-28 03:08:05,029 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 310 selfloop transitions, 155 changer transitions 23/490 dead transitions. [2024-06-28 03:08:05,029 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 536 places, 490 transitions, 6068 flow [2024-06-28 03:08:05,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 03:08:05,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 03:08:05,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 159 transitions. [2024-06-28 03:08:05,030 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38221153846153844 [2024-06-28 03:08:05,030 INFO L175 Difference]: Start difference. First operand has 526 places, 466 transitions, 4892 flow. Second operand 13 states and 159 transitions. [2024-06-28 03:08:05,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 536 places, 490 transitions, 6068 flow [2024-06-28 03:08:06,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 524 places, 490 transitions, 5766 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-06-28 03:08:06,735 INFO L231 Difference]: Finished difference. Result has 525 places, 453 transitions, 4790 flow [2024-06-28 03:08:06,735 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4590, PETRI_DIFFERENCE_MINUEND_PLACES=512, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=466, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=155, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=311, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4790, PETRI_PLACES=525, PETRI_TRANSITIONS=453} [2024-06-28 03:08:06,736 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 494 predicate places. [2024-06-28 03:08:06,736 INFO L495 AbstractCegarLoop]: Abstraction has has 525 places, 453 transitions, 4790 flow [2024-06-28 03:08:06,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:08:06,736 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:08:06,736 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:08:06,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable248 [2024-06-28 03:08:06,736 INFO L420 AbstractCegarLoop]: === Iteration 250 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:08:06,737 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:08:06,737 INFO L85 PathProgramCache]: Analyzing trace with hash 748629196, now seen corresponding path program 19 times [2024-06-28 03:08:06,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:08:06,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657375019] [2024-06-28 03:08:06,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:08:06,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:08:06,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:08:07,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:08:07,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:08:07,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657375019] [2024-06-28 03:08:07,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657375019] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:08:07,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:08:07,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 03:08:07,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643992978] [2024-06-28 03:08:07,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:08:07,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 03:08:07,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:08:07,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 03:08:07,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2024-06-28 03:08:07,869 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 03:08:07,869 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 525 places, 453 transitions, 4790 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:08:07,869 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:08:07,869 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 03:08:07,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:08:08,563 INFO L124 PetriNetUnfolderBase]: 1118/2114 cut-off events. [2024-06-28 03:08:08,564 INFO L125 PetriNetUnfolderBase]: For 379254/379254 co-relation queries the response was YES. [2024-06-28 03:08:08,590 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12305 conditions, 2114 events. 1118/2114 cut-off events. For 379254/379254 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 13619 event pairs, 121 based on Foata normal form. 10/2123 useless extension candidates. Maximal degree in co-relation 12099. Up to 1238 conditions per place. [2024-06-28 03:08:08,595 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 277 selfloop transitions, 183 changer transitions 17/479 dead transitions. [2024-06-28 03:08:08,595 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 529 places, 479 transitions, 5950 flow [2024-06-28 03:08:08,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-28 03:08:08,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-28 03:08:08,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 171 transitions. [2024-06-28 03:08:08,596 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38169642857142855 [2024-06-28 03:08:08,596 INFO L175 Difference]: Start difference. First operand has 525 places, 453 transitions, 4790 flow. Second operand 14 states and 171 transitions. [2024-06-28 03:08:08,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 529 places, 479 transitions, 5950 flow [2024-06-28 03:08:10,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 515 places, 479 transitions, 5604 flow, removed 9 selfloop flow, removed 14 redundant places. [2024-06-28 03:08:10,242 INFO L231 Difference]: Finished difference. Result has 516 places, 444 transitions, 4772 flow [2024-06-28 03:08:10,242 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4448, PETRI_DIFFERENCE_MINUEND_PLACES=502, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=453, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=183, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=4772, PETRI_PLACES=516, PETRI_TRANSITIONS=444} [2024-06-28 03:08:10,243 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 485 predicate places. [2024-06-28 03:08:10,243 INFO L495 AbstractCegarLoop]: Abstraction has has 516 places, 444 transitions, 4772 flow [2024-06-28 03:08:10,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:08:10,243 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:08:10,243 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:08:10,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable249 [2024-06-28 03:08:10,243 INFO L420 AbstractCegarLoop]: === Iteration 251 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:08:10,244 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:08:10,244 INFO L85 PathProgramCache]: Analyzing trace with hash 748624546, now seen corresponding path program 20 times [2024-06-28 03:08:10,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:08:10,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281385545] [2024-06-28 03:08:10,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:08:10,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:08:10,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:08:11,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:08:11,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:08:11,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281385545] [2024-06-28 03:08:11,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281385545] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:08:11,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:08:11,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 03:08:11,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571258372] [2024-06-28 03:08:11,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:08:11,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 03:08:11,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:08:11,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 03:08:11,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2024-06-28 03:08:11,489 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 03:08:11,489 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 516 places, 444 transitions, 4772 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:08:11,489 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:08:11,489 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 03:08:11,489 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:08:12,215 INFO L124 PetriNetUnfolderBase]: 1090/2070 cut-off events. [2024-06-28 03:08:12,216 INFO L125 PetriNetUnfolderBase]: For 337992/337992 co-relation queries the response was YES. [2024-06-28 03:08:12,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12019 conditions, 2070 events. 1090/2070 cut-off events. For 337992/337992 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 13397 event pairs, 121 based on Foata normal form. 8/2077 useless extension candidates. Maximal degree in co-relation 11817. Up to 1272 conditions per place. [2024-06-28 03:08:12,249 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 289 selfloop transitions, 162 changer transitions 15/468 dead transitions. [2024-06-28 03:08:12,249 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 523 places, 468 transitions, 5828 flow [2024-06-28 03:08:12,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 03:08:12,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 03:08:12,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 158 transitions. [2024-06-28 03:08:12,250 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3798076923076923 [2024-06-28 03:08:12,250 INFO L175 Difference]: Start difference. First operand has 516 places, 444 transitions, 4772 flow. Second operand 13 states and 158 transitions. [2024-06-28 03:08:12,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 523 places, 468 transitions, 5828 flow [2024-06-28 03:08:13,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 507 places, 468 transitions, 5434 flow, removed 14 selfloop flow, removed 16 redundant places. [2024-06-28 03:08:13,680 INFO L231 Difference]: Finished difference. Result has 508 places, 437 transitions, 4670 flow [2024-06-28 03:08:13,680 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4384, PETRI_DIFFERENCE_MINUEND_PLACES=495, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=444, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=162, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4670, PETRI_PLACES=508, PETRI_TRANSITIONS=437} [2024-06-28 03:08:13,681 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 477 predicate places. [2024-06-28 03:08:13,681 INFO L495 AbstractCegarLoop]: Abstraction has has 508 places, 437 transitions, 4670 flow [2024-06-28 03:08:13,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:08:13,681 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:08:13,681 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:08:13,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable250 [2024-06-28 03:08:13,681 INFO L420 AbstractCegarLoop]: === Iteration 252 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:08:13,682 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:08:13,682 INFO L85 PathProgramCache]: Analyzing trace with hash 926006670, now seen corresponding path program 6 times [2024-06-28 03:08:13,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:08:13,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453175381] [2024-06-28 03:08:13,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:08:13,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:08:13,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:08:14,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:08:14,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:08:14,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453175381] [2024-06-28 03:08:14,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453175381] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:08:14,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:08:14,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 03:08:14,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679254971] [2024-06-28 03:08:14,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:08:14,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 03:08:14,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:08:14,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 03:08:14,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2024-06-28 03:08:14,939 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 03:08:14,939 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 508 places, 437 transitions, 4670 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:08:14,939 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:08:14,939 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 03:08:14,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:08:15,559 INFO L124 PetriNetUnfolderBase]: 1077/2047 cut-off events. [2024-06-28 03:08:15,559 INFO L125 PetriNetUnfolderBase]: For 322500/322500 co-relation queries the response was YES. [2024-06-28 03:08:15,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11829 conditions, 2047 events. 1077/2047 cut-off events. For 322500/322500 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 13225 event pairs, 119 based on Foata normal form. 8/2054 useless extension candidates. Maximal degree in co-relation 11631. Up to 1321 conditions per place. [2024-06-28 03:08:15,591 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 312 selfloop transitions, 130 changer transitions 16/460 dead transitions. [2024-06-28 03:08:15,591 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 512 places, 460 transitions, 5722 flow [2024-06-28 03:08:15,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:08:15,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:08:15,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 150 transitions. [2024-06-28 03:08:15,592 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-28 03:08:15,592 INFO L175 Difference]: Start difference. First operand has 508 places, 437 transitions, 4670 flow. Second operand 12 states and 150 transitions. [2024-06-28 03:08:15,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 512 places, 460 transitions, 5722 flow [2024-06-28 03:08:16,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 500 places, 460 transitions, 5392 flow, removed 3 selfloop flow, removed 12 redundant places. [2024-06-28 03:08:16,914 INFO L231 Difference]: Finished difference. Result has 501 places, 430 transitions, 4519 flow [2024-06-28 03:08:16,914 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4340, PETRI_DIFFERENCE_MINUEND_PLACES=489, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=437, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=130, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=307, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4519, PETRI_PLACES=501, PETRI_TRANSITIONS=430} [2024-06-28 03:08:16,915 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 470 predicate places. [2024-06-28 03:08:16,915 INFO L495 AbstractCegarLoop]: Abstraction has has 501 places, 430 transitions, 4519 flow [2024-06-28 03:08:16,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:08:16,915 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:08:16,915 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:08:16,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable251 [2024-06-28 03:08:16,915 INFO L420 AbstractCegarLoop]: === Iteration 253 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:08:16,916 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:08:16,916 INFO L85 PathProgramCache]: Analyzing trace with hash 748509226, now seen corresponding path program 21 times [2024-06-28 03:08:16,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:08:16,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569525347] [2024-06-28 03:08:16,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:08:16,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:08:16,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:08:17,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:08:17,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:08:17,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569525347] [2024-06-28 03:08:17,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569525347] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:08:17,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:08:17,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 03:08:17,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932123459] [2024-06-28 03:08:17,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:08:17,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 03:08:17,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:08:17,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 03:08:17,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2024-06-28 03:08:18,117 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 03:08:18,117 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 501 places, 430 transitions, 4519 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:08:18,117 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:08:18,117 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 03:08:18,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:08:18,791 INFO L124 PetriNetUnfolderBase]: 1090/2074 cut-off events. [2024-06-28 03:08:18,791 INFO L125 PetriNetUnfolderBase]: For 459211/459211 co-relation queries the response was YES. [2024-06-28 03:08:18,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13741 conditions, 2074 events. 1090/2074 cut-off events. For 459211/459211 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 13325 event pairs, 130 based on Foata normal form. 8/2081 useless extension candidates. Maximal degree in co-relation 13545. Up to 1172 conditions per place. [2024-06-28 03:08:18,822 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 290 selfloop transitions, 150 changer transitions 18/460 dead transitions. [2024-06-28 03:08:18,822 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 508 places, 460 transitions, 6029 flow [2024-06-28 03:08:18,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 03:08:18,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 03:08:18,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 164 transitions. [2024-06-28 03:08:18,823 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3942307692307692 [2024-06-28 03:08:18,824 INFO L175 Difference]: Start difference. First operand has 501 places, 430 transitions, 4519 flow. Second operand 13 states and 164 transitions. [2024-06-28 03:08:18,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 508 places, 460 transitions, 6029 flow [2024-06-28 03:08:20,505 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 498 places, 460 transitions, 5761 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-28 03:08:20,510 INFO L231 Difference]: Finished difference. Result has 499 places, 419 transitions, 4444 flow [2024-06-28 03:08:20,510 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4255, PETRI_DIFFERENCE_MINUEND_PLACES=486, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=430, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=150, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=280, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4444, PETRI_PLACES=499, PETRI_TRANSITIONS=419} [2024-06-28 03:08:20,510 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 468 predicate places. [2024-06-28 03:08:20,510 INFO L495 AbstractCegarLoop]: Abstraction has has 499 places, 419 transitions, 4444 flow [2024-06-28 03:08:20,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:08:20,511 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:08:20,511 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:08:20,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable252 [2024-06-28 03:08:20,512 INFO L420 AbstractCegarLoop]: === Iteration 254 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:08:20,512 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:08:20,512 INFO L85 PathProgramCache]: Analyzing trace with hash 1703837766, now seen corresponding path program 22 times [2024-06-28 03:08:20,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:08:20,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212847494] [2024-06-28 03:08:20,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:08:20,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:08:20,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:08:21,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:08:21,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:08:21,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212847494] [2024-06-28 03:08:21,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212847494] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:08:21,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:08:21,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 03:08:21,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599569444] [2024-06-28 03:08:21,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:08:21,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 03:08:21,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:08:21,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 03:08:21,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2024-06-28 03:08:21,516 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 03:08:21,516 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 499 places, 419 transitions, 4444 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:08:21,516 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:08:21,516 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 03:08:21,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:08:22,138 INFO L124 PetriNetUnfolderBase]: 1074/2042 cut-off events. [2024-06-28 03:08:22,138 INFO L125 PetriNetUnfolderBase]: For 484271/484271 co-relation queries the response was YES. [2024-06-28 03:08:22,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13732 conditions, 2042 events. 1074/2042 cut-off events. For 484271/484271 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 13023 event pairs, 132 based on Foata normal form. 10/2051 useless extension candidates. Maximal degree in co-relation 13537. Up to 1256 conditions per place. [2024-06-28 03:08:22,170 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 279 selfloop transitions, 147 changer transitions 15/443 dead transitions. [2024-06-28 03:08:22,170 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 505 places, 443 transitions, 5510 flow [2024-06-28 03:08:22,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 03:08:22,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 03:08:22,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 160 transitions. [2024-06-28 03:08:22,171 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38461538461538464 [2024-06-28 03:08:22,171 INFO L175 Difference]: Start difference. First operand has 499 places, 419 transitions, 4444 flow. Second operand 13 states and 160 transitions. [2024-06-28 03:08:22,171 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 505 places, 443 transitions, 5510 flow [2024-06-28 03:08:24,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 491 places, 443 transitions, 5214 flow, removed 7 selfloop flow, removed 14 redundant places. [2024-06-28 03:08:24,173 INFO L231 Difference]: Finished difference. Result has 492 places, 412 transitions, 4396 flow [2024-06-28 03:08:24,173 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4150, PETRI_DIFFERENCE_MINUEND_PLACES=479, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=419, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=147, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4396, PETRI_PLACES=492, PETRI_TRANSITIONS=412} [2024-06-28 03:08:24,174 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 461 predicate places. [2024-06-28 03:08:24,174 INFO L495 AbstractCegarLoop]: Abstraction has has 492 places, 412 transitions, 4396 flow [2024-06-28 03:08:24,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:08:24,174 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:08:24,174 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:08:24,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable253 [2024-06-28 03:08:24,175 INFO L420 AbstractCegarLoop]: === Iteration 255 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:08:24,176 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:08:24,176 INFO L85 PathProgramCache]: Analyzing trace with hash 919326976, now seen corresponding path program 23 times [2024-06-28 03:08:24,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:08:24,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898807134] [2024-06-28 03:08:24,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:08:24,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:08:24,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:08:25,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:08:25,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:08:25,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898807134] [2024-06-28 03:08:25,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898807134] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:08:25,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:08:25,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 03:08:25,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489335467] [2024-06-28 03:08:25,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:08:25,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 03:08:25,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:08:25,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 03:08:25,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2024-06-28 03:08:25,302 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 03:08:25,303 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 492 places, 412 transitions, 4396 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:08:25,303 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:08:25,303 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 03:08:25,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:08:25,928 INFO L124 PetriNetUnfolderBase]: 1046/1998 cut-off events. [2024-06-28 03:08:25,928 INFO L125 PetriNetUnfolderBase]: For 431435/431435 co-relation queries the response was YES. [2024-06-28 03:08:25,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13354 conditions, 1998 events. 1046/1998 cut-off events. For 431435/431435 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 12751 event pairs, 138 based on Foata normal form. 8/2005 useless extension candidates. Maximal degree in co-relation 13163. Up to 1290 conditions per place. [2024-06-28 03:08:25,965 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 289 selfloop transitions, 120 changer transitions 24/435 dead transitions. [2024-06-28 03:08:25,965 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 501 places, 435 transitions, 5376 flow [2024-06-28 03:08:25,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 03:08:25,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 03:08:25,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 155 transitions. [2024-06-28 03:08:25,966 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37259615384615385 [2024-06-28 03:08:25,966 INFO L175 Difference]: Start difference. First operand has 492 places, 412 transitions, 4396 flow. Second operand 13 states and 155 transitions. [2024-06-28 03:08:25,966 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 501 places, 435 transitions, 5376 flow [2024-06-28 03:08:27,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 489 places, 435 transitions, 5078 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-06-28 03:08:27,836 INFO L231 Difference]: Finished difference. Result has 490 places, 398 transitions, 4175 flow [2024-06-28 03:08:27,836 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4098, PETRI_DIFFERENCE_MINUEND_PLACES=477, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=412, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4175, PETRI_PLACES=490, PETRI_TRANSITIONS=398} [2024-06-28 03:08:27,836 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 459 predicate places. [2024-06-28 03:08:27,836 INFO L495 AbstractCegarLoop]: Abstraction has has 490 places, 398 transitions, 4175 flow [2024-06-28 03:08:27,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:08:27,840 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:08:27,840 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:08:27,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable254 [2024-06-28 03:08:27,842 INFO L420 AbstractCegarLoop]: === Iteration 256 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:08:27,848 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:08:27,850 INFO L85 PathProgramCache]: Analyzing trace with hash -672529750, now seen corresponding path program 24 times [2024-06-28 03:08:27,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:08:27,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857332643] [2024-06-28 03:08:27,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:08:27,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:08:27,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:08:28,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:08:28,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:08:28,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857332643] [2024-06-28 03:08:28,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857332643] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:08:28,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:08:28,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 03:08:28,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854614856] [2024-06-28 03:08:28,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:08:28,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 03:08:28,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:08:28,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 03:08:28,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2024-06-28 03:08:29,041 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 03:08:29,042 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 490 places, 398 transitions, 4175 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:08:29,042 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:08:29,042 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 03:08:29,042 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:08:29,666 INFO L124 PetriNetUnfolderBase]: 1021/1943 cut-off events. [2024-06-28 03:08:29,666 INFO L125 PetriNetUnfolderBase]: For 426876/426876 co-relation queries the response was YES. [2024-06-28 03:08:29,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12593 conditions, 1943 events. 1021/1943 cut-off events. For 426876/426876 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 12247 event pairs, 131 based on Foata normal form. 10/1952 useless extension candidates. Maximal degree in co-relation 12403. Up to 1184 conditions per place. [2024-06-28 03:08:29,694 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 264 selfloop transitions, 141 changer transitions 15/422 dead transitions. [2024-06-28 03:08:29,694 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 492 places, 422 transitions, 5197 flow [2024-06-28 03:08:29,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 03:08:29,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 03:08:29,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 157 transitions. [2024-06-28 03:08:29,696 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37740384615384615 [2024-06-28 03:08:29,696 INFO L175 Difference]: Start difference. First operand has 490 places, 398 transitions, 4175 flow. Second operand 13 states and 157 transitions. [2024-06-28 03:08:29,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 492 places, 422 transitions, 5197 flow [2024-06-28 03:08:31,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 474 places, 422 transitions, 4887 flow, removed 10 selfloop flow, removed 18 redundant places. [2024-06-28 03:08:31,207 INFO L231 Difference]: Finished difference. Result has 475 places, 391 transitions, 4109 flow [2024-06-28 03:08:31,207 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3869, PETRI_DIFFERENCE_MINUEND_PLACES=462, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=398, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=141, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4109, PETRI_PLACES=475, PETRI_TRANSITIONS=391} [2024-06-28 03:08:31,207 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 444 predicate places. [2024-06-28 03:08:31,208 INFO L495 AbstractCegarLoop]: Abstraction has has 475 places, 391 transitions, 4109 flow [2024-06-28 03:08:31,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:08:31,208 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:08:31,208 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:08:31,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable255 [2024-06-28 03:08:31,208 INFO L420 AbstractCegarLoop]: === Iteration 257 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:08:31,209 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:08:31,209 INFO L85 PathProgramCache]: Analyzing trace with hash -1658485906, now seen corresponding path program 25 times [2024-06-28 03:08:31,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:08:31,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49933904] [2024-06-28 03:08:31,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:08:31,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:08:31,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:08:32,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:08:32,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:08:32,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49933904] [2024-06-28 03:08:32,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49933904] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:08:32,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:08:32,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 03:08:32,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98565918] [2024-06-28 03:08:32,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:08:32,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 03:08:32,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:08:32,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 03:08:32,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2024-06-28 03:08:32,336 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 03:08:32,337 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 475 places, 391 transitions, 4109 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:08:32,337 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:08:32,337 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 03:08:32,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:08:33,047 INFO L124 PetriNetUnfolderBase]: 971/1853 cut-off events. [2024-06-28 03:08:33,048 INFO L125 PetriNetUnfolderBase]: For 275507/275507 co-relation queries the response was YES. [2024-06-28 03:08:33,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10652 conditions, 1853 events. 971/1853 cut-off events. For 275507/275507 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 11713 event pairs, 119 based on Foata normal form. 8/1860 useless extension candidates. Maximal degree in co-relation 10467. Up to 1172 conditions per place. [2024-06-28 03:08:33,067 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 275 selfloop transitions, 118 changer transitions 19/414 dead transitions. [2024-06-28 03:08:33,067 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 484 places, 414 transitions, 5047 flow [2024-06-28 03:08:33,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 03:08:33,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 03:08:33,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 152 transitions. [2024-06-28 03:08:33,068 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36538461538461536 [2024-06-28 03:08:33,069 INFO L175 Difference]: Start difference. First operand has 475 places, 391 transitions, 4109 flow. Second operand 13 states and 152 transitions. [2024-06-28 03:08:33,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 484 places, 414 transitions, 5047 flow [2024-06-28 03:08:34,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 470 places, 414 transitions, 4656 flow, removed 7 selfloop flow, removed 14 redundant places. [2024-06-28 03:08:34,064 INFO L231 Difference]: Finished difference. Result has 471 places, 381 transitions, 3866 flow [2024-06-28 03:08:34,064 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3722, PETRI_DIFFERENCE_MINUEND_PLACES=458, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=391, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3866, PETRI_PLACES=471, PETRI_TRANSITIONS=381} [2024-06-28 03:08:34,064 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 440 predicate places. [2024-06-28 03:08:34,064 INFO L495 AbstractCegarLoop]: Abstraction has has 471 places, 381 transitions, 3866 flow [2024-06-28 03:08:34,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:08:34,064 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:08:34,065 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:08:34,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable256 [2024-06-28 03:08:34,065 INFO L420 AbstractCegarLoop]: === Iteration 258 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:08:34,065 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:08:34,065 INFO L85 PathProgramCache]: Analyzing trace with hash -1651806212, now seen corresponding path program 7 times [2024-06-28 03:08:34,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:08:34,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038719372] [2024-06-28 03:08:34,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:08:34,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:08:34,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:08:35,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:08:35,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:08:35,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038719372] [2024-06-28 03:08:35,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038719372] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:08:35,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:08:35,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 03:08:35,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716826798] [2024-06-28 03:08:35,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:08:35,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 03:08:35,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:08:35,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 03:08:35,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2024-06-28 03:08:35,190 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 03:08:35,190 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 471 places, 381 transitions, 3866 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:08:35,190 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:08:35,190 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 03:08:35,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:08:35,708 INFO L124 PetriNetUnfolderBase]: 948/1808 cut-off events. [2024-06-28 03:08:35,708 INFO L125 PetriNetUnfolderBase]: For 246208/246208 co-relation queries the response was YES. [2024-06-28 03:08:35,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9868 conditions, 1808 events. 948/1808 cut-off events. For 246208/246208 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 11369 event pairs, 114 based on Foata normal form. 8/1815 useless extension candidates. Maximal degree in co-relation 9685. Up to 1145 conditions per place. [2024-06-28 03:08:35,733 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 270 selfloop transitions, 112 changer transitions 19/403 dead transitions. [2024-06-28 03:08:35,733 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 470 places, 403 transitions, 4784 flow [2024-06-28 03:08:35,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:08:35,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:08:35,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 144 transitions. [2024-06-28 03:08:35,734 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-28 03:08:35,734 INFO L175 Difference]: Start difference. First operand has 471 places, 381 transitions, 3866 flow. Second operand 12 states and 144 transitions. [2024-06-28 03:08:35,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 470 places, 403 transitions, 4784 flow [2024-06-28 03:08:36,650 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 457 places, 403 transitions, 4470 flow, removed 14 selfloop flow, removed 13 redundant places. [2024-06-28 03:08:36,654 INFO L231 Difference]: Finished difference. Result has 458 places, 370 transitions, 3674 flow [2024-06-28 03:08:36,654 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3558, PETRI_DIFFERENCE_MINUEND_PLACES=446, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=381, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3674, PETRI_PLACES=458, PETRI_TRANSITIONS=370} [2024-06-28 03:08:36,655 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 427 predicate places. [2024-06-28 03:08:36,655 INFO L495 AbstractCegarLoop]: Abstraction has has 458 places, 370 transitions, 3674 flow [2024-06-28 03:08:36,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:08:36,655 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:08:36,655 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:08:36,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable257 [2024-06-28 03:08:36,655 INFO L420 AbstractCegarLoop]: === Iteration 259 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:08:36,655 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:08:36,656 INFO L85 PathProgramCache]: Analyzing trace with hash 335360014, now seen corresponding path program 8 times [2024-06-28 03:08:36,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:08:36,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799537082] [2024-06-28 03:08:36,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:08:36,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:08:36,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:08:38,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:08:38,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:08:38,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799537082] [2024-06-28 03:08:38,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799537082] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:08:38,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:08:38,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 03:08:38,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163563061] [2024-06-28 03:08:38,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:08:38,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 03:08:38,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:08:38,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 03:08:38,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2024-06-28 03:08:38,335 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 03:08:38,336 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 458 places, 370 transitions, 3674 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:08:38,336 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:08:38,336 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 03:08:38,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:08:38,927 INFO L124 PetriNetUnfolderBase]: 937/1783 cut-off events. [2024-06-28 03:08:38,927 INFO L125 PetriNetUnfolderBase]: For 288593/288593 co-relation queries the response was YES. [2024-06-28 03:08:38,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9636 conditions, 1783 events. 937/1783 cut-off events. For 288593/288593 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 11125 event pairs, 120 based on Foata normal form. 12/1794 useless extension candidates. Maximal degree in co-relation 9457. Up to 1123 conditions per place. [2024-06-28 03:08:38,952 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 263 selfloop transitions, 113 changer transitions 18/396 dead transitions. [2024-06-28 03:08:38,952 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 464 places, 396 transitions, 4646 flow [2024-06-28 03:08:38,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 03:08:38,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 03:08:38,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 166 transitions. [2024-06-28 03:08:38,953 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39903846153846156 [2024-06-28 03:08:38,953 INFO L175 Difference]: Start difference. First operand has 458 places, 370 transitions, 3674 flow. Second operand 13 states and 166 transitions. [2024-06-28 03:08:38,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 464 places, 396 transitions, 4646 flow [2024-06-28 03:08:39,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 451 places, 396 transitions, 4348 flow, removed 4 selfloop flow, removed 13 redundant places. [2024-06-28 03:08:39,772 INFO L231 Difference]: Finished difference. Result has 452 places, 363 transitions, 3557 flow [2024-06-28 03:08:39,772 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3378, PETRI_DIFFERENCE_MINUEND_PLACES=439, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=370, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3557, PETRI_PLACES=452, PETRI_TRANSITIONS=363} [2024-06-28 03:08:39,772 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 421 predicate places. [2024-06-28 03:08:39,772 INFO L495 AbstractCegarLoop]: Abstraction has has 452 places, 363 transitions, 3557 flow [2024-06-28 03:08:39,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:08:39,772 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:08:39,773 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:08:39,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable258 [2024-06-28 03:08:39,773 INFO L420 AbstractCegarLoop]: === Iteration 260 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:08:39,773 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:08:39,773 INFO L85 PathProgramCache]: Analyzing trace with hash 335175440, now seen corresponding path program 26 times [2024-06-28 03:08:39,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:08:39,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944962432] [2024-06-28 03:08:39,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:08:39,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:08:39,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:08:40,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:08:40,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:08:40,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944962432] [2024-06-28 03:08:40,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944962432] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:08:40,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:08:40,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 03:08:40,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376855315] [2024-06-28 03:08:40,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:08:40,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 03:08:40,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:08:40,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 03:08:40,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2024-06-28 03:08:40,871 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 03:08:40,871 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 452 places, 363 transitions, 3557 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:08:40,871 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:08:40,871 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 03:08:40,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:08:41,447 INFO L124 PetriNetUnfolderBase]: 936/1792 cut-off events. [2024-06-28 03:08:41,447 INFO L125 PetriNetUnfolderBase]: For 352443/352443 co-relation queries the response was YES. [2024-06-28 03:08:41,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11148 conditions, 1792 events. 936/1792 cut-off events. For 352443/352443 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 11125 event pairs, 129 based on Foata normal form. 8/1799 useless extension candidates. Maximal degree in co-relation 10971. Up to 1060 conditions per place. [2024-06-28 03:08:41,472 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 264 selfloop transitions, 119 changer transitions 7/392 dead transitions. [2024-06-28 03:08:41,472 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 459 places, 392 transitions, 4869 flow [2024-06-28 03:08:41,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 03:08:41,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 03:08:41,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 168 transitions. [2024-06-28 03:08:41,473 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40384615384615385 [2024-06-28 03:08:41,473 INFO L175 Difference]: Start difference. First operand has 452 places, 363 transitions, 3557 flow. Second operand 13 states and 168 transitions. [2024-06-28 03:08:41,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 459 places, 392 transitions, 4869 flow [2024-06-28 03:08:42,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 448 places, 392 transitions, 4625 flow, removed 9 selfloop flow, removed 11 redundant places. [2024-06-28 03:08:42,561 INFO L231 Difference]: Finished difference. Result has 449 places, 361 transitions, 3553 flow [2024-06-28 03:08:42,561 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3323, PETRI_DIFFERENCE_MINUEND_PLACES=436, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=363, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3553, PETRI_PLACES=449, PETRI_TRANSITIONS=361} [2024-06-28 03:08:42,562 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 418 predicate places. [2024-06-28 03:08:42,562 INFO L495 AbstractCegarLoop]: Abstraction has has 449 places, 361 transitions, 3553 flow [2024-06-28 03:08:42,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:08:42,562 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:08:42,562 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:08:42,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable259 [2024-06-28 03:08:42,562 INFO L420 AbstractCegarLoop]: === Iteration 261 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:08:42,563 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:08:42,563 INFO L85 PathProgramCache]: Analyzing trace with hash 245420440, now seen corresponding path program 27 times [2024-06-28 03:08:42,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:08:42,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658354093] [2024-06-28 03:08:42,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:08:42,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:08:42,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:08:43,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:08:43,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:08:43,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658354093] [2024-06-28 03:08:43,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658354093] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:08:43,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:08:43,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 03:08:43,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049192154] [2024-06-28 03:08:43,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:08:43,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 03:08:43,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:08:43,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 03:08:43,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2024-06-28 03:08:43,687 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 03:08:43,688 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 449 places, 361 transitions, 3553 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:08:43,688 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:08:43,688 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 03:08:43,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:08:44,270 INFO L124 PetriNetUnfolderBase]: 934/1790 cut-off events. [2024-06-28 03:08:44,271 INFO L125 PetriNetUnfolderBase]: For 372702/372702 co-relation queries the response was YES. [2024-06-28 03:08:44,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11201 conditions, 1790 events. 934/1790 cut-off events. For 372702/372702 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 11096 event pairs, 137 based on Foata normal form. 10/1799 useless extension candidates. Maximal degree in co-relation 11025. Up to 1083 conditions per place. [2024-06-28 03:08:44,295 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 244 selfloop transitions, 125 changer transitions 15/386 dead transitions. [2024-06-28 03:08:44,295 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 459 places, 386 transitions, 4485 flow [2024-06-28 03:08:44,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 03:08:44,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 03:08:44,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 167 transitions. [2024-06-28 03:08:44,296 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4014423076923077 [2024-06-28 03:08:44,296 INFO L175 Difference]: Start difference. First operand has 449 places, 361 transitions, 3553 flow. Second operand 13 states and 167 transitions. [2024-06-28 03:08:44,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 459 places, 386 transitions, 4485 flow [2024-06-28 03:08:45,601 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 447 places, 386 transitions, 4249 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-06-28 03:08:45,604 INFO L231 Difference]: Finished difference. Result has 448 places, 354 transitions, 3502 flow [2024-06-28 03:08:45,604 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3317, PETRI_DIFFERENCE_MINUEND_PLACES=435, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=361, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3502, PETRI_PLACES=448, PETRI_TRANSITIONS=354} [2024-06-28 03:08:45,605 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 417 predicate places. [2024-06-28 03:08:45,605 INFO L495 AbstractCegarLoop]: Abstraction has has 448 places, 354 transitions, 3502 flow [2024-06-28 03:08:45,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:08:45,605 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:08:45,605 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:08:45,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable260 [2024-06-28 03:08:45,605 INFO L420 AbstractCegarLoop]: === Iteration 262 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:08:45,606 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:08:45,606 INFO L85 PathProgramCache]: Analyzing trace with hash -1758945138, now seen corresponding path program 9 times [2024-06-28 03:08:45,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:08:45,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555329599] [2024-06-28 03:08:45,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:08:45,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:08:45,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:08:46,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:08:46,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:08:46,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555329599] [2024-06-28 03:08:46,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555329599] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:08:46,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:08:46,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 03:08:46,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187835207] [2024-06-28 03:08:46,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:08:46,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 03:08:46,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:08:46,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 03:08:46,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2024-06-28 03:08:46,903 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 03:08:46,904 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 448 places, 354 transitions, 3502 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:08:46,904 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:08:46,904 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 03:08:46,904 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:08:47,498 INFO L124 PetriNetUnfolderBase]: 945/1807 cut-off events. [2024-06-28 03:08:47,498 INFO L125 PetriNetUnfolderBase]: For 341764/341764 co-relation queries the response was YES. [2024-06-28 03:08:47,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11180 conditions, 1807 events. 945/1807 cut-off events. For 341764/341764 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 11219 event pairs, 229 based on Foata normal form. 8/1814 useless extension candidates. Maximal degree in co-relation 11005. Up to 1389 conditions per place. [2024-06-28 03:08:47,522 INFO L140 encePairwiseOnDemand]: 18/32 looper letters, 298 selfloop transitions, 77 changer transitions 12/389 dead transitions. [2024-06-28 03:08:47,522 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 456 places, 389 transitions, 4463 flow [2024-06-28 03:08:47,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-28 03:08:47,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-28 03:08:47,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 164 transitions. [2024-06-28 03:08:47,523 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36607142857142855 [2024-06-28 03:08:47,523 INFO L175 Difference]: Start difference. First operand has 448 places, 354 transitions, 3502 flow. Second operand 14 states and 164 transitions. [2024-06-28 03:08:47,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 456 places, 389 transitions, 4463 flow [2024-06-28 03:08:48,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 443 places, 389 transitions, 4187 flow, removed 8 selfloop flow, removed 13 redundant places. [2024-06-28 03:08:48,560 INFO L231 Difference]: Finished difference. Result has 448 places, 363 transitions, 3484 flow [2024-06-28 03:08:48,560 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3240, PETRI_DIFFERENCE_MINUEND_PLACES=430, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=354, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=3484, PETRI_PLACES=448, PETRI_TRANSITIONS=363} [2024-06-28 03:08:48,560 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 417 predicate places. [2024-06-28 03:08:48,560 INFO L495 AbstractCegarLoop]: Abstraction has has 448 places, 363 transitions, 3484 flow [2024-06-28 03:08:48,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:08:48,560 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:08:48,560 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:08:48,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable261 [2024-06-28 03:08:48,561 INFO L420 AbstractCegarLoop]: === Iteration 263 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:08:48,561 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:08:48,561 INFO L85 PathProgramCache]: Analyzing trace with hash -1552681404, now seen corresponding path program 28 times [2024-06-28 03:08:48,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:08:48,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311938716] [2024-06-28 03:08:48,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:08:48,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:08:48,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:08:49,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:08:49,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:08:49,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311938716] [2024-06-28 03:08:49,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311938716] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:08:49,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:08:49,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 03:08:49,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112426038] [2024-06-28 03:08:49,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:08:49,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 03:08:49,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:08:49,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 03:08:49,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2024-06-28 03:08:49,814 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 03:08:49,814 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 448 places, 363 transitions, 3484 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:08:49,814 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:08:49,814 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 03:08:49,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:08:50,519 INFO L124 PetriNetUnfolderBase]: 964/1848 cut-off events. [2024-06-28 03:08:50,519 INFO L125 PetriNetUnfolderBase]: For 446209/446209 co-relation queries the response was YES. [2024-06-28 03:08:50,538 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12857 conditions, 1848 events. 964/1848 cut-off events. For 446209/446209 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 11495 event pairs, 138 based on Foata normal form. 8/1855 useless extension candidates. Maximal degree in co-relation 12680. Up to 1050 conditions per place. [2024-06-28 03:08:50,542 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 234 selfloop transitions, 148 changer transitions 9/393 dead transitions. [2024-06-28 03:08:50,542 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 458 places, 393 transitions, 4778 flow [2024-06-28 03:08:50,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-28 03:08:50,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-28 03:08:50,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 176 transitions. [2024-06-28 03:08:50,543 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39285714285714285 [2024-06-28 03:08:50,543 INFO L175 Difference]: Start difference. First operand has 448 places, 363 transitions, 3484 flow. Second operand 14 states and 176 transitions. [2024-06-28 03:08:50,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 458 places, 393 transitions, 4778 flow [2024-06-28 03:08:52,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 451 places, 393 transitions, 4683 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-28 03:08:52,143 INFO L231 Difference]: Finished difference. Result has 452 places, 359 transitions, 3669 flow [2024-06-28 03:08:52,143 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3391, PETRI_DIFFERENCE_MINUEND_PLACES=438, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=363, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=148, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=3669, PETRI_PLACES=452, PETRI_TRANSITIONS=359} [2024-06-28 03:08:52,143 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 421 predicate places. [2024-06-28 03:08:52,144 INFO L495 AbstractCegarLoop]: Abstraction has has 452 places, 359 transitions, 3669 flow [2024-06-28 03:08:52,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:08:52,144 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:08:52,144 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:08:52,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable262 [2024-06-28 03:08:52,144 INFO L420 AbstractCegarLoop]: === Iteration 264 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:08:52,145 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:08:52,145 INFO L85 PathProgramCache]: Analyzing trace with hash 571535374, now seen corresponding path program 10 times [2024-06-28 03:08:52,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:08:52,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846966121] [2024-06-28 03:08:52,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:08:52,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:08:52,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:08:53,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:08:53,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:08:53,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846966121] [2024-06-28 03:08:53,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846966121] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:08:53,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:08:53,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 03:08:53,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454676271] [2024-06-28 03:08:53,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:08:53,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 03:08:53,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:08:53,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 03:08:53,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2024-06-28 03:08:53,618 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 03:08:53,619 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 452 places, 359 transitions, 3669 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:08:53,619 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:08:53,619 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 03:08:53,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:08:54,287 INFO L124 PetriNetUnfolderBase]: 944/1808 cut-off events. [2024-06-28 03:08:54,288 INFO L125 PetriNetUnfolderBase]: For 381863/381863 co-relation queries the response was YES. [2024-06-28 03:08:54,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12929 conditions, 1808 events. 944/1808 cut-off events. For 381863/381863 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 11167 event pairs, 155 based on Foata normal form. 2/1809 useless extension candidates. Maximal degree in co-relation 12753. Up to 1199 conditions per place. [2024-06-28 03:08:54,311 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 256 selfloop transitions, 120 changer transitions 0/378 dead transitions. [2024-06-28 03:08:54,311 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 460 places, 378 transitions, 4485 flow [2024-06-28 03:08:54,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:08:54,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:08:54,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 151 transitions. [2024-06-28 03:08:54,312 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3932291666666667 [2024-06-28 03:08:54,312 INFO L175 Difference]: Start difference. First operand has 452 places, 359 transitions, 3669 flow. Second operand 12 states and 151 transitions. [2024-06-28 03:08:54,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 460 places, 378 transitions, 4485 flow [2024-06-28 03:08:55,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 446 places, 378 transitions, 4187 flow, removed 3 selfloop flow, removed 14 redundant places. [2024-06-28 03:08:55,467 INFO L231 Difference]: Finished difference. Result has 447 places, 360 transitions, 3632 flow [2024-06-28 03:08:55,467 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3371, PETRI_DIFFERENCE_MINUEND_PLACES=435, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=359, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3632, PETRI_PLACES=447, PETRI_TRANSITIONS=360} [2024-06-28 03:08:55,467 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 416 predicate places. [2024-06-28 03:08:55,467 INFO L495 AbstractCegarLoop]: Abstraction has has 447 places, 360 transitions, 3632 flow [2024-06-28 03:08:55,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:08:55,467 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:08:55,467 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:08:55,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable263 [2024-06-28 03:08:55,468 INFO L420 AbstractCegarLoop]: === Iteration 265 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:08:55,468 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:08:55,468 INFO L85 PathProgramCache]: Analyzing trace with hash -1405626226, now seen corresponding path program 11 times [2024-06-28 03:08:55,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:08:55,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012804441] [2024-06-28 03:08:55,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:08:55,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:08:55,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:08:56,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:08:56,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:08:56,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012804441] [2024-06-28 03:08:56,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012804441] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:08:56,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:08:56,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 03:08:56,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859117381] [2024-06-28 03:08:56,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:08:56,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 03:08:56,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:08:56,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 03:08:56,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2024-06-28 03:08:56,601 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 03:08:56,602 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 447 places, 360 transitions, 3632 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:08:56,602 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:08:56,602 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 03:08:56,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:08:57,087 INFO L124 PetriNetUnfolderBase]: 956/1836 cut-off events. [2024-06-28 03:08:57,087 INFO L125 PetriNetUnfolderBase]: For 432978/432978 co-relation queries the response was YES. [2024-06-28 03:08:57,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12971 conditions, 1836 events. 956/1836 cut-off events. For 432978/432978 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 11353 event pairs, 152 based on Foata normal form. 8/1843 useless extension candidates. Maximal degree in co-relation 12797. Up to 1228 conditions per place. [2024-06-28 03:08:57,113 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 259 selfloop transitions, 106 changer transitions 14/381 dead transitions. [2024-06-28 03:08:57,113 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 458 places, 381 transitions, 4504 flow [2024-06-28 03:08:57,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:08:57,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:08:57,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 147 transitions. [2024-06-28 03:08:57,114 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3828125 [2024-06-28 03:08:57,114 INFO L175 Difference]: Start difference. First operand has 447 places, 360 transitions, 3632 flow. Second operand 12 states and 147 transitions. [2024-06-28 03:08:57,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 458 places, 381 transitions, 4504 flow [2024-06-28 03:08:58,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 448 places, 381 transitions, 4255 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-28 03:08:58,418 INFO L231 Difference]: Finished difference. Result has 449 places, 355 transitions, 3535 flow [2024-06-28 03:08:58,418 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3383, PETRI_DIFFERENCE_MINUEND_PLACES=437, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=360, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3535, PETRI_PLACES=449, PETRI_TRANSITIONS=355} [2024-06-28 03:08:58,418 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 418 predicate places. [2024-06-28 03:08:58,418 INFO L495 AbstractCegarLoop]: Abstraction has has 449 places, 355 transitions, 3535 flow [2024-06-28 03:08:58,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:08:58,419 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:08:58,419 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:08:58,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable264 [2024-06-28 03:08:58,419 INFO L420 AbstractCegarLoop]: === Iteration 266 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:08:58,419 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:08:58,420 INFO L85 PathProgramCache]: Analyzing trace with hash -1381794400, now seen corresponding path program 12 times [2024-06-28 03:08:58,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:08:58,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928339700] [2024-06-28 03:08:58,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:08:58,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:08:58,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:08:59,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:08:59,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:08:59,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928339700] [2024-06-28 03:08:59,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928339700] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:08:59,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:08:59,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 03:08:59,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9829498] [2024-06-28 03:08:59,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:08:59,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 03:08:59,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:08:59,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 03:08:59,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2024-06-28 03:08:59,869 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 03:08:59,869 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 449 places, 355 transitions, 3535 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:08:59,869 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:08:59,869 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 03:08:59,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:09:00,577 INFO L124 PetriNetUnfolderBase]: 952/1828 cut-off events. [2024-06-28 03:09:00,578 INFO L125 PetriNetUnfolderBase]: For 486500/486500 co-relation queries the response was YES. [2024-06-28 03:09:00,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12976 conditions, 1828 events. 952/1828 cut-off events. For 486500/486500 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 11335 event pairs, 156 based on Foata normal form. 12/1839 useless extension candidates. Maximal degree in co-relation 12801. Up to 1196 conditions per place. [2024-06-28 03:09:00,599 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 250 selfloop transitions, 108 changer transitions 21/381 dead transitions. [2024-06-28 03:09:00,600 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 456 places, 381 transitions, 4467 flow [2024-06-28 03:09:00,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 03:09:00,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 03:09:00,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 165 transitions. [2024-06-28 03:09:00,601 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39663461538461536 [2024-06-28 03:09:00,601 INFO L175 Difference]: Start difference. First operand has 449 places, 355 transitions, 3535 flow. Second operand 13 states and 165 transitions. [2024-06-28 03:09:00,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 456 places, 381 transitions, 4467 flow [2024-06-28 03:09:01,852 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 445 places, 381 transitions, 4235 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-28 03:09:01,856 INFO L231 Difference]: Finished difference. Result has 446 places, 345 transitions, 3444 flow [2024-06-28 03:09:01,856 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3303, PETRI_DIFFERENCE_MINUEND_PLACES=433, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=355, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3444, PETRI_PLACES=446, PETRI_TRANSITIONS=345} [2024-06-28 03:09:01,856 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 415 predicate places. [2024-06-28 03:09:01,857 INFO L495 AbstractCegarLoop]: Abstraction has has 446 places, 345 transitions, 3444 flow [2024-06-28 03:09:01,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:09:01,857 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:09:01,857 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:09:01,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable265 [2024-06-28 03:09:01,857 INFO L420 AbstractCegarLoop]: === Iteration 267 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:09:01,857 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:09:01,857 INFO L85 PathProgramCache]: Analyzing trace with hash -1758656838, now seen corresponding path program 13 times [2024-06-28 03:09:01,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:09:01,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545865007] [2024-06-28 03:09:01,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:09:01,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:09:01,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:09:03,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:09:03,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:09:03,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545865007] [2024-06-28 03:09:03,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545865007] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:09:03,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:09:03,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 03:09:03,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064510661] [2024-06-28 03:09:03,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:09:03,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 03:09:03,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:09:03,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 03:09:03,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2024-06-28 03:09:03,157 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 03:09:03,157 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 446 places, 345 transitions, 3444 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:09:03,158 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:09:03,158 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 03:09:03,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:09:03,663 INFO L124 PetriNetUnfolderBase]: 915/1761 cut-off events. [2024-06-28 03:09:03,663 INFO L125 PetriNetUnfolderBase]: For 393588/393588 co-relation queries the response was YES. [2024-06-28 03:09:03,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12869 conditions, 1761 events. 915/1761 cut-off events. For 393588/393588 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 10852 event pairs, 163 based on Foata normal form. 2/1762 useless extension candidates. Maximal degree in co-relation 12695. Up to 1176 conditions per place. [2024-06-28 03:09:03,690 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 251 selfloop transitions, 112 changer transitions 0/365 dead transitions. [2024-06-28 03:09:03,690 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 452 places, 365 transitions, 4544 flow [2024-06-28 03:09:03,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:09:03,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:09:03,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 146 transitions. [2024-06-28 03:09:03,691 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3802083333333333 [2024-06-28 03:09:03,691 INFO L175 Difference]: Start difference. First operand has 446 places, 345 transitions, 3444 flow. Second operand 12 states and 146 transitions. [2024-06-28 03:09:03,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 452 places, 365 transitions, 4544 flow [2024-06-28 03:09:05,088 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 440 places, 365 transitions, 4302 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-06-28 03:09:05,091 INFO L231 Difference]: Finished difference. Result has 441 places, 347 transitions, 3468 flow [2024-06-28 03:09:05,092 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3206, PETRI_DIFFERENCE_MINUEND_PLACES=429, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=345, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3468, PETRI_PLACES=441, PETRI_TRANSITIONS=347} [2024-06-28 03:09:05,092 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 410 predicate places. [2024-06-28 03:09:05,092 INFO L495 AbstractCegarLoop]: Abstraction has has 441 places, 347 transitions, 3468 flow [2024-06-28 03:09:05,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:09:05,092 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:09:05,092 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:09:05,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable266 [2024-06-28 03:09:05,092 INFO L420 AbstractCegarLoop]: === Iteration 268 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:09:05,093 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:09:05,093 INFO L85 PathProgramCache]: Analyzing trace with hash -1412305920, now seen corresponding path program 29 times [2024-06-28 03:09:05,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:09:05,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20816844] [2024-06-28 03:09:05,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:09:05,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:09:05,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:09:06,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:09:06,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:09:06,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20816844] [2024-06-28 03:09:06,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20816844] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:09:06,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:09:06,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 03:09:06,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214379266] [2024-06-28 03:09:06,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:09:06,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 03:09:06,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:09:06,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 03:09:06,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2024-06-28 03:09:06,327 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 03:09:06,328 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 441 places, 347 transitions, 3468 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:09:06,328 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:09:06,328 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 03:09:06,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:09:06,927 INFO L124 PetriNetUnfolderBase]: 956/1848 cut-off events. [2024-06-28 03:09:06,928 INFO L125 PetriNetUnfolderBase]: For 557929/557929 co-relation queries the response was YES. [2024-06-28 03:09:06,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14791 conditions, 1848 events. 956/1848 cut-off events. For 557929/557929 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 11503 event pairs, 176 based on Foata normal form. 8/1855 useless extension candidates. Maximal degree in co-relation 14619. Up to 1190 conditions per place. [2024-06-28 03:09:06,954 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 259 selfloop transitions, 106 changer transitions 7/374 dead transitions. [2024-06-28 03:09:06,954 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 453 places, 374 transitions, 4702 flow [2024-06-28 03:09:06,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 03:09:06,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 03:09:06,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 160 transitions. [2024-06-28 03:09:06,955 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38461538461538464 [2024-06-28 03:09:06,955 INFO L175 Difference]: Start difference. First operand has 441 places, 347 transitions, 3468 flow. Second operand 13 states and 160 transitions. [2024-06-28 03:09:06,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 453 places, 374 transitions, 4702 flow [2024-06-28 03:09:08,693 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 445 places, 374 transitions, 4536 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-28 03:09:08,697 INFO L231 Difference]: Finished difference. Result has 446 places, 345 transitions, 3506 flow [2024-06-28 03:09:08,697 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3302, PETRI_DIFFERENCE_MINUEND_PLACES=433, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=347, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3506, PETRI_PLACES=446, PETRI_TRANSITIONS=345} [2024-06-28 03:09:08,697 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 415 predicate places. [2024-06-28 03:09:08,698 INFO L495 AbstractCegarLoop]: Abstraction has has 446 places, 345 transitions, 3506 flow [2024-06-28 03:09:08,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:09:08,698 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:09:08,698 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:09:08,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable267 [2024-06-28 03:09:08,698 INFO L420 AbstractCegarLoop]: === Iteration 269 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:09:08,698 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:09:08,698 INFO L85 PathProgramCache]: Analyzing trace with hash 622004166, now seen corresponding path program 14 times [2024-06-28 03:09:08,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:09:08,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450205738] [2024-06-28 03:09:08,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:09:08,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:09:08,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:09:09,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:09:09,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:09:09,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450205738] [2024-06-28 03:09:09,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450205738] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:09:09,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:09:09,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 03:09:09,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108915991] [2024-06-28 03:09:09,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:09:09,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 03:09:09,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:09:09,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 03:09:09,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2024-06-28 03:09:10,045 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 03:09:10,046 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 446 places, 345 transitions, 3506 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:09:10,046 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:09:10,046 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 03:09:10,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:09:10,741 INFO L124 PetriNetUnfolderBase]: 994/1930 cut-off events. [2024-06-28 03:09:10,741 INFO L125 PetriNetUnfolderBase]: For 733941/733941 co-relation queries the response was YES. [2024-06-28 03:09:10,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17911 conditions, 1930 events. 994/1930 cut-off events. For 733941/733941 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 12091 event pairs, 201 based on Foata normal form. 8/1937 useless extension candidates. Maximal degree in co-relation 17737. Up to 1149 conditions per place. [2024-06-28 03:09:10,770 INFO L140 encePairwiseOnDemand]: 18/32 looper letters, 246 selfloop transitions, 119 changer transitions 8/375 dead transitions. [2024-06-28 03:09:10,770 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 457 places, 375 transitions, 4772 flow [2024-06-28 03:09:10,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-28 03:09:10,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-28 03:09:10,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 179 transitions. [2024-06-28 03:09:10,771 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39955357142857145 [2024-06-28 03:09:10,772 INFO L175 Difference]: Start difference. First operand has 446 places, 345 transitions, 3506 flow. Second operand 14 states and 179 transitions. [2024-06-28 03:09:10,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 457 places, 375 transitions, 4772 flow [2024-06-28 03:09:12,811 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 445 places, 375 transitions, 4554 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-28 03:09:12,815 INFO L231 Difference]: Finished difference. Result has 446 places, 342 transitions, 3501 flow [2024-06-28 03:09:12,815 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3292, PETRI_DIFFERENCE_MINUEND_PLACES=432, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=345, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=3501, PETRI_PLACES=446, PETRI_TRANSITIONS=342} [2024-06-28 03:09:12,816 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 415 predicate places. [2024-06-28 03:09:12,816 INFO L495 AbstractCegarLoop]: Abstraction has has 446 places, 342 transitions, 3501 flow [2024-06-28 03:09:12,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:09:12,817 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:09:12,817 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:09:12,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable268 [2024-06-28 03:09:12,817 INFO L420 AbstractCegarLoop]: === Iteration 270 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:09:12,818 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:09:12,818 INFO L85 PathProgramCache]: Analyzing trace with hash 563254220, now seen corresponding path program 30 times [2024-06-28 03:09:12,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:09:12,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305148636] [2024-06-28 03:09:12,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:09:12,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:09:12,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:09:13,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:09:13,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:09:13,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305148636] [2024-06-28 03:09:13,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305148636] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:09:13,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:09:13,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 03:09:13,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85693930] [2024-06-28 03:09:13,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:09:13,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 03:09:13,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:09:13,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 03:09:13,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2024-06-28 03:09:14,116 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 03:09:14,116 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 446 places, 342 transitions, 3501 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:09:14,116 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:09:14,116 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 03:09:14,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:09:14,918 INFO L124 PetriNetUnfolderBase]: 954/1854 cut-off events. [2024-06-28 03:09:14,918 INFO L125 PetriNetUnfolderBase]: For 642258/642258 co-relation queries the response was YES. [2024-06-28 03:09:14,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15096 conditions, 1854 events. 954/1854 cut-off events. For 642258/642258 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 11587 event pairs, 194 based on Foata normal form. 16/1869 useless extension candidates. Maximal degree in co-relation 14923. Up to 1214 conditions per place. [2024-06-28 03:09:14,945 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 244 selfloop transitions, 95 changer transitions 25/366 dead transitions. [2024-06-28 03:09:14,945 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 456 places, 366 transitions, 4379 flow [2024-06-28 03:09:14,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 03:09:14,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 03:09:14,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 163 transitions. [2024-06-28 03:09:14,946 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3918269230769231 [2024-06-28 03:09:14,946 INFO L175 Difference]: Start difference. First operand has 446 places, 342 transitions, 3501 flow. Second operand 13 states and 163 transitions. [2024-06-28 03:09:14,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 456 places, 366 transitions, 4379 flow [2024-06-28 03:09:16,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 443 places, 366 transitions, 4143 flow, removed 2 selfloop flow, removed 13 redundant places. [2024-06-28 03:09:16,983 INFO L231 Difference]: Finished difference. Result has 444 places, 329 transitions, 3334 flow [2024-06-28 03:09:16,983 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3265, PETRI_DIFFERENCE_MINUEND_PLACES=431, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=342, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3334, PETRI_PLACES=444, PETRI_TRANSITIONS=329} [2024-06-28 03:09:16,983 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 413 predicate places. [2024-06-28 03:09:16,984 INFO L495 AbstractCegarLoop]: Abstraction has has 444 places, 329 transitions, 3334 flow [2024-06-28 03:09:16,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:09:16,984 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:09:16,984 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:09:16,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable269 [2024-06-28 03:09:16,984 INFO L420 AbstractCegarLoop]: === Iteration 271 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:09:16,985 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:09:16,985 INFO L85 PathProgramCache]: Analyzing trace with hash -1748825808, now seen corresponding path program 15 times [2024-06-28 03:09:16,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:09:16,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279773632] [2024-06-28 03:09:16,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:09:16,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:09:16,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:09:18,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:09:18,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:09:18,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279773632] [2024-06-28 03:09:18,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279773632] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:09:18,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:09:18,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 03:09:18,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257315933] [2024-06-28 03:09:18,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:09:18,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 03:09:18,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:09:18,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 03:09:18,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2024-06-28 03:09:18,173 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 03:09:18,174 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 444 places, 329 transitions, 3334 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:09:18,174 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:09:18,174 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 03:09:18,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:09:18,636 INFO L124 PetriNetUnfolderBase]: 897/1747 cut-off events. [2024-06-28 03:09:18,636 INFO L125 PetriNetUnfolderBase]: For 510468/510468 co-relation queries the response was YES. [2024-06-28 03:09:18,655 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14705 conditions, 1747 events. 897/1747 cut-off events. For 510468/510468 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 10809 event pairs, 181 based on Foata normal form. 2/1748 useless extension candidates. Maximal degree in co-relation 14533. Up to 1027 conditions per place. [2024-06-28 03:09:18,661 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 238 selfloop transitions, 109 changer transitions 0/349 dead transitions. [2024-06-28 03:09:18,661 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 446 places, 349 transitions, 4400 flow [2024-06-28 03:09:18,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:09:18,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:09:18,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 146 transitions. [2024-06-28 03:09:18,662 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3802083333333333 [2024-06-28 03:09:18,662 INFO L175 Difference]: Start difference. First operand has 444 places, 329 transitions, 3334 flow. Second operand 12 states and 146 transitions. [2024-06-28 03:09:18,662 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 446 places, 349 transitions, 4400 flow [2024-06-28 03:09:20,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 435 places, 349 transitions, 4186 flow, removed 12 selfloop flow, removed 11 redundant places. [2024-06-28 03:09:20,409 INFO L231 Difference]: Finished difference. Result has 436 places, 331 transitions, 3386 flow [2024-06-28 03:09:20,409 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3130, PETRI_DIFFERENCE_MINUEND_PLACES=424, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=329, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3386, PETRI_PLACES=436, PETRI_TRANSITIONS=331} [2024-06-28 03:09:20,410 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 405 predicate places. [2024-06-28 03:09:20,410 INFO L495 AbstractCegarLoop]: Abstraction has has 436 places, 331 transitions, 3386 flow [2024-06-28 03:09:20,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:09:20,410 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:09:20,410 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:09:20,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable270 [2024-06-28 03:09:20,410 INFO L420 AbstractCegarLoop]: === Iteration 272 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:09:20,411 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:09:20,411 INFO L85 PathProgramCache]: Analyzing trace with hash 571832044, now seen corresponding path program 16 times [2024-06-28 03:09:20,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:09:20,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701616931] [2024-06-28 03:09:20,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:09:20,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:09:20,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:09:21,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:09:21,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:09:21,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701616931] [2024-06-28 03:09:21,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701616931] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:09:21,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:09:21,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 03:09:21,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954224433] [2024-06-28 03:09:21,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:09:21,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 03:09:21,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:09:21,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 03:09:21,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2024-06-28 03:09:21,738 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 03:09:21,738 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 436 places, 331 transitions, 3386 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:09:21,739 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:09:21,739 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 03:09:21,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:09:22,297 INFO L124 PetriNetUnfolderBase]: 937/1827 cut-off events. [2024-06-28 03:09:22,297 INFO L125 PetriNetUnfolderBase]: For 620755/620755 co-relation queries the response was YES. [2024-06-28 03:09:22,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16825 conditions, 1827 events. 937/1827 cut-off events. For 620755/620755 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 11403 event pairs, 195 based on Foata normal form. 2/1828 useless extension candidates. Maximal degree in co-relation 16655. Up to 1078 conditions per place. [2024-06-28 03:09:22,324 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 249 selfloop transitions, 107 changer transitions 0/358 dead transitions. [2024-06-28 03:09:22,324 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 448 places, 358 transitions, 4568 flow [2024-06-28 03:09:22,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 03:09:22,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 03:09:22,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 164 transitions. [2024-06-28 03:09:22,325 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3942307692307692 [2024-06-28 03:09:22,326 INFO L175 Difference]: Start difference. First operand has 436 places, 331 transitions, 3386 flow. Second operand 13 states and 164 transitions. [2024-06-28 03:09:22,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 448 places, 358 transitions, 4568 flow [2024-06-28 03:09:24,442 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 440 places, 358 transitions, 4404 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-28 03:09:24,446 INFO L231 Difference]: Finished difference. Result has 441 places, 333 transitions, 3478 flow [2024-06-28 03:09:24,446 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3226, PETRI_DIFFERENCE_MINUEND_PLACES=428, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=331, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3478, PETRI_PLACES=441, PETRI_TRANSITIONS=333} [2024-06-28 03:09:24,446 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 410 predicate places. [2024-06-28 03:09:24,446 INFO L495 AbstractCegarLoop]: Abstraction has has 441 places, 333 transitions, 3478 flow [2024-06-28 03:09:24,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:09:24,447 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:09:24,447 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:09:24,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable271 [2024-06-28 03:09:24,447 INFO L420 AbstractCegarLoop]: === Iteration 273 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:09:24,447 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:09:24,448 INFO L85 PathProgramCache]: Analyzing trace with hash 392307186, now seen corresponding path program 17 times [2024-06-28 03:09:24,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:09:24,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8437403] [2024-06-28 03:09:24,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:09:24,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:09:24,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:09:25,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:09:25,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:09:25,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8437403] [2024-06-28 03:09:25,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8437403] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:09:25,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:09:25,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 03:09:25,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258510152] [2024-06-28 03:09:25,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:09:25,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 03:09:25,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:09:25,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 03:09:25,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2024-06-28 03:09:25,634 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 03:09:25,635 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 441 places, 333 transitions, 3478 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:09:25,635 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:09:25,635 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 03:09:25,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:09:26,225 INFO L124 PetriNetUnfolderBase]: 941/1835 cut-off events. [2024-06-28 03:09:26,225 INFO L125 PetriNetUnfolderBase]: For 629364/629364 co-relation queries the response was YES. [2024-06-28 03:09:26,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17047 conditions, 1835 events. 941/1835 cut-off events. For 629364/629364 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 11465 event pairs, 209 based on Foata normal form. 2/1836 useless extension candidates. Maximal degree in co-relation 16875. Up to 1315 conditions per place. [2024-06-28 03:09:26,251 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 254 selfloop transitions, 96 changer transitions 0/352 dead transitions. [2024-06-28 03:09:26,251 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 452 places, 352 transitions, 4246 flow [2024-06-28 03:09:26,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:09:26,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:09:26,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 148 transitions. [2024-06-28 03:09:26,252 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3854166666666667 [2024-06-28 03:09:26,252 INFO L175 Difference]: Start difference. First operand has 441 places, 333 transitions, 3478 flow. Second operand 12 states and 148 transitions. [2024-06-28 03:09:26,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 452 places, 352 transitions, 4246 flow [2024-06-28 03:09:28,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 443 places, 352 transitions, 4086 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-06-28 03:09:28,579 INFO L231 Difference]: Finished difference. Result has 444 places, 334 transitions, 3535 flow [2024-06-28 03:09:28,580 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3322, PETRI_DIFFERENCE_MINUEND_PLACES=432, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=333, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3535, PETRI_PLACES=444, PETRI_TRANSITIONS=334} [2024-06-28 03:09:28,580 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 413 predicate places. [2024-06-28 03:09:28,580 INFO L495 AbstractCegarLoop]: Abstraction has has 444 places, 334 transitions, 3535 flow [2024-06-28 03:09:28,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:09:28,580 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:09:28,580 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:09:28,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable272 [2024-06-28 03:09:28,581 INFO L420 AbstractCegarLoop]: === Iteration 274 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:09:28,581 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:09:28,581 INFO L85 PathProgramCache]: Analyzing trace with hash 392069602, now seen corresponding path program 31 times [2024-06-28 03:09:28,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:09:28,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950131010] [2024-06-28 03:09:28,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:09:28,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:09:28,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:09:29,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:09:29,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:09:29,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950131010] [2024-06-28 03:09:29,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950131010] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:09:29,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:09:29,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 03:09:29,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60702254] [2024-06-28 03:09:29,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:09:29,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 03:09:29,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:09:29,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 03:09:29,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2024-06-28 03:09:29,619 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 03:09:29,619 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 444 places, 334 transitions, 3535 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:09:29,619 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:09:29,619 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 03:09:29,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:09:30,245 INFO L124 PetriNetUnfolderBase]: 936/1832 cut-off events. [2024-06-28 03:09:30,246 INFO L125 PetriNetUnfolderBase]: For 675967/675967 co-relation queries the response was YES. [2024-06-28 03:09:30,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15721 conditions, 1832 events. 936/1832 cut-off events. For 675967/675967 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 11473 event pairs, 198 based on Foata normal form. 16/1847 useless extension candidates. Maximal degree in co-relation 15547. Up to 1224 conditions per place. [2024-06-28 03:09:30,272 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 246 selfloop transitions, 89 changer transitions 21/358 dead transitions. [2024-06-28 03:09:30,273 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 456 places, 358 transitions, 4393 flow [2024-06-28 03:09:30,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 03:09:30,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 03:09:30,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 162 transitions. [2024-06-28 03:09:30,274 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3894230769230769 [2024-06-28 03:09:30,274 INFO L175 Difference]: Start difference. First operand has 444 places, 334 transitions, 3535 flow. Second operand 13 states and 162 transitions. [2024-06-28 03:09:30,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 456 places, 358 transitions, 4393 flow [2024-06-28 03:09:32,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 446 places, 358 transitions, 4196 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-28 03:09:32,045 INFO L231 Difference]: Finished difference. Result has 447 places, 323 transitions, 3409 flow [2024-06-28 03:09:32,045 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3338, PETRI_DIFFERENCE_MINUEND_PLACES=434, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=334, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3409, PETRI_PLACES=447, PETRI_TRANSITIONS=323} [2024-06-28 03:09:32,046 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 416 predicate places. [2024-06-28 03:09:32,046 INFO L495 AbstractCegarLoop]: Abstraction has has 447 places, 323 transitions, 3409 flow [2024-06-28 03:09:32,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:09:32,046 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:09:32,046 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:09:32,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable273 [2024-06-28 03:09:32,046 INFO L420 AbstractCegarLoop]: === Iteration 275 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:09:32,047 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:09:32,047 INFO L85 PathProgramCache]: Analyzing trace with hash -1412301270, now seen corresponding path program 32 times [2024-06-28 03:09:32,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:09:32,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111316239] [2024-06-28 03:09:32,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:09:32,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:09:32,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:09:33,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:09:33,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:09:33,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111316239] [2024-06-28 03:09:33,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111316239] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:09:33,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:09:33,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 03:09:33,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923741300] [2024-06-28 03:09:33,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:09:33,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 03:09:33,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:09:33,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 03:09:33,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2024-06-28 03:09:33,318 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 03:09:33,318 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 447 places, 323 transitions, 3409 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:09:33,318 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:09:33,319 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 03:09:33,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:09:33,917 INFO L124 PetriNetUnfolderBase]: 863/1697 cut-off events. [2024-06-28 03:09:33,917 INFO L125 PetriNetUnfolderBase]: For 517364/517364 co-relation queries the response was YES. [2024-06-28 03:09:33,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13490 conditions, 1697 events. 863/1697 cut-off events. For 517364/517364 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 10515 event pairs, 167 based on Foata normal form. 10/1706 useless extension candidates. Maximal degree in co-relation 13315. Up to 1100 conditions per place. [2024-06-28 03:09:33,940 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 224 selfloop transitions, 100 changer transitions 19/345 dead transitions. [2024-06-28 03:09:33,940 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 452 places, 345 transitions, 4233 flow [2024-06-28 03:09:33,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 03:09:33,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 03:09:33,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 156 transitions. [2024-06-28 03:09:33,941 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-28 03:09:33,941 INFO L175 Difference]: Start difference. First operand has 447 places, 323 transitions, 3409 flow. Second operand 13 states and 156 transitions. [2024-06-28 03:09:33,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 452 places, 345 transitions, 4233 flow [2024-06-28 03:09:36,042 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 439 places, 345 transitions, 4037 flow, removed 9 selfloop flow, removed 13 redundant places. [2024-06-28 03:09:36,046 INFO L231 Difference]: Finished difference. Result has 440 places, 314 transitions, 3315 flow [2024-06-28 03:09:36,046 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3217, PETRI_DIFFERENCE_MINUEND_PLACES=427, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=323, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3315, PETRI_PLACES=440, PETRI_TRANSITIONS=314} [2024-06-28 03:09:36,046 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 409 predicate places. [2024-06-28 03:09:36,046 INFO L495 AbstractCegarLoop]: Abstraction has has 440 places, 314 transitions, 3315 flow [2024-06-28 03:09:36,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:09:36,047 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:09:36,047 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:09:36,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable274 [2024-06-28 03:09:36,047 INFO L420 AbstractCegarLoop]: === Iteration 276 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:09:36,047 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:09:36,047 INFO L85 PathProgramCache]: Analyzing trace with hash -1175937616, now seen corresponding path program 18 times [2024-06-28 03:09:36,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:09:36,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763883] [2024-06-28 03:09:36,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:09:36,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:09:36,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:09:37,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:09:37,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:09:37,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763883] [2024-06-28 03:09:37,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763883] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:09:37,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:09:37,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 03:09:37,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715780552] [2024-06-28 03:09:37,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:09:37,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 03:09:37,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:09:37,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 03:09:37,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2024-06-28 03:09:37,565 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 03:09:37,565 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 440 places, 314 transitions, 3315 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:09:37,565 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:09:37,565 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 03:09:37,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:09:38,037 INFO L124 PetriNetUnfolderBase]: 836/1640 cut-off events. [2024-06-28 03:09:38,037 INFO L125 PetriNetUnfolderBase]: For 415172/415172 co-relation queries the response was YES. [2024-06-28 03:09:38,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13025 conditions, 1640 events. 836/1640 cut-off events. For 415172/415172 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 10074 event pairs, 161 based on Foata normal form. 2/1641 useless extension candidates. Maximal degree in co-relation 12853. Up to 1140 conditions per place. [2024-06-28 03:09:38,058 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 240 selfloop transitions, 91 changer transitions 0/333 dead transitions. [2024-06-28 03:09:38,059 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 443 places, 333 transitions, 4043 flow [2024-06-28 03:09:38,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:09:38,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:09:38,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 143 transitions. [2024-06-28 03:09:38,060 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3723958333333333 [2024-06-28 03:09:38,060 INFO L175 Difference]: Start difference. First operand has 440 places, 314 transitions, 3315 flow. Second operand 12 states and 143 transitions. [2024-06-28 03:09:38,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 443 places, 333 transitions, 4043 flow [2024-06-28 03:09:39,601 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 427 places, 333 transitions, 3777 flow, removed 8 selfloop flow, removed 16 redundant places. [2024-06-28 03:09:39,604 INFO L231 Difference]: Finished difference. Result has 428 places, 315 transitions, 3255 flow [2024-06-28 03:09:39,604 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3049, PETRI_DIFFERENCE_MINUEND_PLACES=416, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=314, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3255, PETRI_PLACES=428, PETRI_TRANSITIONS=315} [2024-06-28 03:09:39,605 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 397 predicate places. [2024-06-28 03:09:39,605 INFO L495 AbstractCegarLoop]: Abstraction has has 428 places, 315 transitions, 3255 flow [2024-06-28 03:09:39,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:09:39,605 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:09:39,605 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:09:39,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable275 [2024-06-28 03:09:39,605 INFO L420 AbstractCegarLoop]: === Iteration 277 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:09:39,606 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:09:39,606 INFO L85 PathProgramCache]: Analyzing trace with hash 1126361274, now seen corresponding path program 19 times [2024-06-28 03:09:39,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:09:39,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417319031] [2024-06-28 03:09:39,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:09:39,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:09:39,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:09:40,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:09:40,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:09:40,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417319031] [2024-06-28 03:09:40,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417319031] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:09:40,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:09:40,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 03:09:40,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460579043] [2024-06-28 03:09:40,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:09:40,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 03:09:40,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:09:40,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 03:09:40,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2024-06-28 03:09:40,854 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 03:09:40,855 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 428 places, 315 transitions, 3255 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:09:40,855 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:09:40,855 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 03:09:40,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:09:41,324 INFO L124 PetriNetUnfolderBase]: 840/1648 cut-off events. [2024-06-28 03:09:41,325 INFO L125 PetriNetUnfolderBase]: For 399108/399108 co-relation queries the response was YES. [2024-06-28 03:09:41,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12818 conditions, 1648 events. 840/1648 cut-off events. For 399108/399108 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 10148 event pairs, 166 based on Foata normal form. 2/1649 useless extension candidates. Maximal degree in co-relation 12649. Up to 1115 conditions per place. [2024-06-28 03:09:41,346 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 237 selfloop transitions, 95 changer transitions 0/334 dead transitions. [2024-06-28 03:09:41,347 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 439 places, 334 transitions, 3981 flow [2024-06-28 03:09:41,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:09:41,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:09:41,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 147 transitions. [2024-06-28 03:09:41,348 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3828125 [2024-06-28 03:09:41,348 INFO L175 Difference]: Start difference. First operand has 428 places, 315 transitions, 3255 flow. Second operand 12 states and 147 transitions. [2024-06-28 03:09:41,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 439 places, 334 transitions, 3981 flow [2024-06-28 03:09:43,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 429 places, 334 transitions, 3787 flow, removed 7 selfloop flow, removed 10 redundant places. [2024-06-28 03:09:43,244 INFO L231 Difference]: Finished difference. Result has 430 places, 316 transitions, 3271 flow [2024-06-28 03:09:43,244 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3061, PETRI_DIFFERENCE_MINUEND_PLACES=418, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3271, PETRI_PLACES=430, PETRI_TRANSITIONS=316} [2024-06-28 03:09:43,245 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 399 predicate places. [2024-06-28 03:09:43,245 INFO L495 AbstractCegarLoop]: Abstraction has has 430 places, 316 transitions, 3271 flow [2024-06-28 03:09:43,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:09:43,245 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:09:43,245 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:09:43,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable276 [2024-06-28 03:09:43,245 INFO L420 AbstractCegarLoop]: === Iteration 278 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:09:43,246 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:09:43,246 INFO L85 PathProgramCache]: Analyzing trace with hash -763701964, now seen corresponding path program 33 times [2024-06-28 03:09:43,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:09:43,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855652079] [2024-06-28 03:09:43,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:09:43,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:09:43,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:09:44,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:09:44,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:09:44,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855652079] [2024-06-28 03:09:44,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855652079] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:09:44,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:09:44,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 03:09:44,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205010098] [2024-06-28 03:09:44,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:09:44,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 03:09:44,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:09:44,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 03:09:44,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2024-06-28 03:09:44,503 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 03:09:44,503 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 430 places, 316 transitions, 3271 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:09:44,503 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:09:44,503 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 03:09:44,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:09:45,078 INFO L124 PetriNetUnfolderBase]: 856/1684 cut-off events. [2024-06-28 03:09:45,078 INFO L125 PetriNetUnfolderBase]: For 484454/484454 co-relation queries the response was YES. [2024-06-28 03:09:45,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13059 conditions, 1684 events. 856/1684 cut-off events. For 484454/484454 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 10426 event pairs, 171 based on Foata normal form. 10/1693 useless extension candidates. Maximal degree in co-relation 12889. Up to 1147 conditions per place. [2024-06-28 03:09:45,102 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 232 selfloop transitions, 88 changer transitions 17/339 dead transitions. [2024-06-28 03:09:45,102 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 442 places, 339 transitions, 4075 flow [2024-06-28 03:09:45,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 03:09:45,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 03:09:45,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 157 transitions. [2024-06-28 03:09:45,103 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37740384615384615 [2024-06-28 03:09:45,103 INFO L175 Difference]: Start difference. First operand has 430 places, 316 transitions, 3271 flow. Second operand 13 states and 157 transitions. [2024-06-28 03:09:45,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 442 places, 339 transitions, 4075 flow [2024-06-28 03:09:46,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 432 places, 339 transitions, 3879 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-28 03:09:46,793 INFO L231 Difference]: Finished difference. Result has 433 places, 309 transitions, 3195 flow [2024-06-28 03:09:46,793 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3075, PETRI_DIFFERENCE_MINUEND_PLACES=420, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=316, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3195, PETRI_PLACES=433, PETRI_TRANSITIONS=309} [2024-06-28 03:09:46,793 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 402 predicate places. [2024-06-28 03:09:46,793 INFO L495 AbstractCegarLoop]: Abstraction has has 433 places, 309 transitions, 3195 flow [2024-06-28 03:09:46,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:09:46,794 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:09:46,794 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:09:46,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable277 [2024-06-28 03:09:46,794 INFO L420 AbstractCegarLoop]: === Iteration 279 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:09:46,794 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:09:46,794 INFO L85 PathProgramCache]: Analyzing trace with hash -391143176, now seen corresponding path program 20 times [2024-06-28 03:09:46,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:09:46,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680347366] [2024-06-28 03:09:46,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:09:46,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:09:46,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:09:47,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:09:47,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:09:47,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680347366] [2024-06-28 03:09:47,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680347366] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:09:47,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:09:47,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 03:09:47,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156487050] [2024-06-28 03:09:47,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:09:47,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 03:09:47,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:09:47,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 03:09:47,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2024-06-28 03:09:47,983 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 03:09:47,983 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 433 places, 309 transitions, 3195 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:09:47,983 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:09:47,983 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 03:09:47,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:09:48,446 INFO L124 PetriNetUnfolderBase]: 847/1673 cut-off events. [2024-06-28 03:09:48,446 INFO L125 PetriNetUnfolderBase]: For 506098/506098 co-relation queries the response was YES. [2024-06-28 03:09:48,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13594 conditions, 1673 events. 847/1673 cut-off events. For 506098/506098 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 10332 event pairs, 175 based on Foata normal form. 8/1680 useless extension candidates. Maximal degree in co-relation 13423. Up to 1094 conditions per place. [2024-06-28 03:09:48,468 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 238 selfloop transitions, 81 changer transitions 11/332 dead transitions. [2024-06-28 03:09:48,469 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 437 places, 332 transitions, 4271 flow [2024-06-28 03:09:48,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:09:48,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:09:48,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 150 transitions. [2024-06-28 03:09:48,470 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-28 03:09:48,470 INFO L175 Difference]: Start difference. First operand has 433 places, 309 transitions, 3195 flow. Second operand 12 states and 150 transitions. [2024-06-28 03:09:48,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 437 places, 332 transitions, 4271 flow [2024-06-28 03:09:50,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 425 places, 332 transitions, 4063 flow, removed 16 selfloop flow, removed 12 redundant places. [2024-06-28 03:09:50,065 INFO L231 Difference]: Finished difference. Result has 426 places, 304 transitions, 3108 flow [2024-06-28 03:09:50,065 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3003, PETRI_DIFFERENCE_MINUEND_PLACES=414, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3108, PETRI_PLACES=426, PETRI_TRANSITIONS=304} [2024-06-28 03:09:50,066 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 395 predicate places. [2024-06-28 03:09:50,066 INFO L495 AbstractCegarLoop]: Abstraction has has 426 places, 304 transitions, 3108 flow [2024-06-28 03:09:50,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:09:50,066 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:09:50,066 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:09:50,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable278 [2024-06-28 03:09:50,066 INFO L420 AbstractCegarLoop]: === Iteration 280 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:09:50,066 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:09:50,067 INFO L85 PathProgramCache]: Analyzing trace with hash -590801510, now seen corresponding path program 21 times [2024-06-28 03:09:50,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:09:50,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492521152] [2024-06-28 03:09:50,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:09:50,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:09:50,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:09:51,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:09:51,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:09:51,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492521152] [2024-06-28 03:09:51,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492521152] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:09:51,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:09:51,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 03:09:51,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726087878] [2024-06-28 03:09:51,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:09:51,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 03:09:51,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:09:51,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 03:09:51,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2024-06-28 03:09:51,427 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 03:09:51,427 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 426 places, 304 transitions, 3108 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:09:51,427 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:09:51,427 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 03:09:51,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:09:51,983 INFO L124 PetriNetUnfolderBase]: 827/1633 cut-off events. [2024-06-28 03:09:51,984 INFO L125 PetriNetUnfolderBase]: For 430907/430907 co-relation queries the response was YES. [2024-06-28 03:09:52,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13159 conditions, 1633 events. 827/1633 cut-off events. For 430907/430907 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 10032 event pairs, 175 based on Foata normal form. 2/1634 useless extension candidates. Maximal degree in co-relation 12991. Up to 1147 conditions per place. [2024-06-28 03:09:52,014 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 234 selfloop transitions, 87 changer transitions 0/323 dead transitions. [2024-06-28 03:09:52,014 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 433 places, 323 transitions, 3816 flow [2024-06-28 03:09:52,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:09:52,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:09:52,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 148 transitions. [2024-06-28 03:09:52,015 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3854166666666667 [2024-06-28 03:09:52,015 INFO L175 Difference]: Start difference. First operand has 426 places, 304 transitions, 3108 flow. Second operand 12 states and 148 transitions. [2024-06-28 03:09:52,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 433 places, 323 transitions, 3816 flow [2024-06-28 03:09:53,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 419 places, 323 transitions, 3499 flow, removed 3 selfloop flow, removed 14 redundant places. [2024-06-28 03:09:53,323 INFO L231 Difference]: Finished difference. Result has 420 places, 305 transitions, 2988 flow [2024-06-28 03:09:53,323 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2792, PETRI_DIFFERENCE_MINUEND_PLACES=408, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2988, PETRI_PLACES=420, PETRI_TRANSITIONS=305} [2024-06-28 03:09:53,323 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 389 predicate places. [2024-06-28 03:09:53,323 INFO L495 AbstractCegarLoop]: Abstraction has has 420 places, 305 transitions, 2988 flow [2024-06-28 03:09:53,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:09:53,324 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:09:53,324 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:09:53,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable279 [2024-06-28 03:09:53,324 INFO L420 AbstractCegarLoop]: === Iteration 281 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:09:53,324 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:09:53,324 INFO L85 PathProgramCache]: Analyzing trace with hash -1552676754, now seen corresponding path program 34 times [2024-06-28 03:09:53,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:09:53,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264472955] [2024-06-28 03:09:53,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:09:53,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:09:53,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:09:54,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:09:54,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:09:54,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264472955] [2024-06-28 03:09:54,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264472955] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:09:54,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:09:54,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 03:09:54,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033182572] [2024-06-28 03:09:54,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:09:54,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 03:09:54,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:09:54,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 03:09:54,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2024-06-28 03:09:54,641 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 03:09:54,641 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 420 places, 305 transitions, 2988 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:09:54,641 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:09:54,641 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 03:09:54,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:09:55,231 INFO L124 PetriNetUnfolderBase]: 814/1610 cut-off events. [2024-06-28 03:09:55,231 INFO L125 PetriNetUnfolderBase]: For 399434/399434 co-relation queries the response was YES. [2024-06-28 03:09:55,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11284 conditions, 1610 events. 814/1610 cut-off events. For 399434/399434 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 9880 event pairs, 154 based on Foata normal form. 10/1619 useless extension candidates. Maximal degree in co-relation 11121. Up to 1001 conditions per place. [2024-06-28 03:09:55,292 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 208 selfloop transitions, 107 changer transitions 13/330 dead transitions. [2024-06-28 03:09:55,292 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 433 places, 330 transitions, 3772 flow [2024-06-28 03:09:55,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-28 03:09:55,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-28 03:09:55,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 170 transitions. [2024-06-28 03:09:55,294 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3794642857142857 [2024-06-28 03:09:55,295 INFO L175 Difference]: Start difference. First operand has 420 places, 305 transitions, 2988 flow. Second operand 14 states and 170 transitions. [2024-06-28 03:09:55,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 433 places, 330 transitions, 3772 flow [2024-06-28 03:09:56,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 423 places, 330 transitions, 3591 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-28 03:09:56,452 INFO L231 Difference]: Finished difference. Result has 424 places, 301 transitions, 3003 flow [2024-06-28 03:09:56,452 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2807, PETRI_DIFFERENCE_MINUEND_PLACES=410, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=3003, PETRI_PLACES=424, PETRI_TRANSITIONS=301} [2024-06-28 03:09:56,452 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 393 predicate places. [2024-06-28 03:09:56,453 INFO L495 AbstractCegarLoop]: Abstraction has has 424 places, 301 transitions, 3003 flow [2024-06-28 03:09:56,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:09:56,453 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:09:56,453 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:09:56,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable280 [2024-06-28 03:09:56,453 INFO L420 AbstractCegarLoop]: === Iteration 282 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:09:56,454 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:09:56,454 INFO L85 PathProgramCache]: Analyzing trace with hash -768290584, now seen corresponding path program 35 times [2024-06-28 03:09:56,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:09:56,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927661615] [2024-06-28 03:09:56,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:09:56,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:09:56,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:09:57,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:09:57,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:09:57,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927661615] [2024-06-28 03:09:57,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927661615] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:09:57,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:09:57,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 03:09:57,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84549289] [2024-06-28 03:09:57,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:09:57,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 03:09:57,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:09:57,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 03:09:57,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2024-06-28 03:09:57,758 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 03:09:57,758 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 424 places, 301 transitions, 3003 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:09:57,758 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:09:57,758 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 03:09:57,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:09:58,369 INFO L124 PetriNetUnfolderBase]: 881/1747 cut-off events. [2024-06-28 03:09:58,369 INFO L125 PetriNetUnfolderBase]: For 577819/577819 co-relation queries the response was YES. [2024-06-28 03:09:58,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14755 conditions, 1747 events. 881/1747 cut-off events. For 577819/577819 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 10870 event pairs, 279 based on Foata normal form. 8/1754 useless extension candidates. Maximal degree in co-relation 14591. Up to 1246 conditions per place. [2024-06-28 03:09:58,393 INFO L140 encePairwiseOnDemand]: 18/32 looper letters, 269 selfloop transitions, 56 changer transitions 12/339 dead transitions. [2024-06-28 03:09:58,393 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 431 places, 339 transitions, 4171 flow [2024-06-28 03:09:58,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-28 03:09:58,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-28 03:09:58,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 171 transitions. [2024-06-28 03:09:58,394 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38169642857142855 [2024-06-28 03:09:58,394 INFO L175 Difference]: Start difference. First operand has 424 places, 301 transitions, 3003 flow. Second operand 14 states and 171 transitions. [2024-06-28 03:09:58,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 431 places, 339 transitions, 4171 flow [2024-06-28 03:10:00,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 418 places, 339 transitions, 3927 flow, removed 11 selfloop flow, removed 13 redundant places. [2024-06-28 03:10:00,063 INFO L231 Difference]: Finished difference. Result has 422 places, 302 transitions, 2906 flow [2024-06-28 03:10:00,063 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2779, PETRI_DIFFERENCE_MINUEND_PLACES=405, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2906, PETRI_PLACES=422, PETRI_TRANSITIONS=302} [2024-06-28 03:10:00,064 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 391 predicate places. [2024-06-28 03:10:00,064 INFO L495 AbstractCegarLoop]: Abstraction has has 422 places, 302 transitions, 2906 flow [2024-06-28 03:10:00,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:10:00,064 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:10:00,064 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:10:00,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable281 [2024-06-28 03:10:00,064 INFO L420 AbstractCegarLoop]: === Iteration 283 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:10:00,064 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:10:00,065 INFO L85 PathProgramCache]: Analyzing trace with hash -597472834, now seen corresponding path program 36 times [2024-06-28 03:10:00,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:10:00,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471599723] [2024-06-28 03:10:00,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:10:00,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:10:00,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:10:00,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:10:00,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:10:00,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471599723] [2024-06-28 03:10:00,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471599723] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:10:00,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:10:00,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 03:10:00,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312399121] [2024-06-28 03:10:00,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:10:00,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 03:10:00,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:10:00,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 03:10:00,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2024-06-28 03:10:01,152 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 03:10:01,152 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 422 places, 302 transitions, 2906 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:10:01,152 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:10:01,152 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 03:10:01,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:10:01,790 INFO L124 PetriNetUnfolderBase]: 910/1810 cut-off events. [2024-06-28 03:10:01,790 INFO L125 PetriNetUnfolderBase]: For 729999/729999 co-relation queries the response was YES. [2024-06-28 03:10:01,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16201 conditions, 1810 events. 910/1810 cut-off events. For 729999/729999 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 11267 event pairs, 191 based on Foata normal form. 16/1825 useless extension candidates. Maximal degree in co-relation 16036. Up to 917 conditions per place. [2024-06-28 03:10:01,815 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 216 selfloop transitions, 105 changer transitions 8/331 dead transitions. [2024-06-28 03:10:01,815 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 432 places, 331 transitions, 4000 flow [2024-06-28 03:10:01,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 03:10:01,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 03:10:01,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 168 transitions. [2024-06-28 03:10:01,816 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40384615384615385 [2024-06-28 03:10:01,816 INFO L175 Difference]: Start difference. First operand has 422 places, 302 transitions, 2906 flow. Second operand 13 states and 168 transitions. [2024-06-28 03:10:01,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 432 places, 331 transitions, 4000 flow [2024-06-28 03:10:03,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 420 places, 331 transitions, 3855 flow, removed 5 selfloop flow, removed 12 redundant places. [2024-06-28 03:10:03,583 INFO L231 Difference]: Finished difference. Result has 421 places, 299 transitions, 2953 flow [2024-06-28 03:10:03,584 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2763, PETRI_DIFFERENCE_MINUEND_PLACES=408, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2953, PETRI_PLACES=421, PETRI_TRANSITIONS=299} [2024-06-28 03:10:03,584 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 390 predicate places. [2024-06-28 03:10:03,584 INFO L495 AbstractCegarLoop]: Abstraction has has 421 places, 299 transitions, 2953 flow [2024-06-28 03:10:03,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:10:03,584 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:10:03,584 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:10:03,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable282 [2024-06-28 03:10:03,585 INFO L420 AbstractCegarLoop]: === Iteration 284 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:10:03,585 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:10:03,585 INFO L85 PathProgramCache]: Analyzing trace with hash -597468184, now seen corresponding path program 37 times [2024-06-28 03:10:03,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:10:03,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629659365] [2024-06-28 03:10:03,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:10:03,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:10:03,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:10:04,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:10:04,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:10:04,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629659365] [2024-06-28 03:10:04,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629659365] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:10:04,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:10:04,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 03:10:04,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107165848] [2024-06-28 03:10:04,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:10:04,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 03:10:04,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:10:04,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 03:10:04,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2024-06-28 03:10:04,645 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 03:10:04,645 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 421 places, 299 transitions, 2953 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:10:04,645 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:10:04,645 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 03:10:04,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:10:05,205 INFO L124 PetriNetUnfolderBase]: 848/1688 cut-off events. [2024-06-28 03:10:05,206 INFO L125 PetriNetUnfolderBase]: For 581454/581454 co-relation queries the response was YES. [2024-06-28 03:10:05,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13032 conditions, 1688 events. 848/1688 cut-off events. For 581454/581454 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 10448 event pairs, 173 based on Foata normal form. 20/1707 useless extension candidates. Maximal degree in co-relation 12869. Up to 1047 conditions per place. [2024-06-28 03:10:05,228 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 208 selfloop transitions, 97 changer transitions 17/324 dead transitions. [2024-06-28 03:10:05,228 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 431 places, 324 transitions, 3723 flow [2024-06-28 03:10:05,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 03:10:05,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 03:10:05,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 165 transitions. [2024-06-28 03:10:05,229 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39663461538461536 [2024-06-28 03:10:05,229 INFO L175 Difference]: Start difference. First operand has 421 places, 299 transitions, 2953 flow. Second operand 13 states and 165 transitions. [2024-06-28 03:10:05,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 431 places, 324 transitions, 3723 flow [2024-06-28 03:10:06,863 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 419 places, 324 transitions, 3517 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-06-28 03:10:06,867 INFO L231 Difference]: Finished difference. Result has 420 places, 290 transitions, 2858 flow [2024-06-28 03:10:06,867 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2747, PETRI_DIFFERENCE_MINUEND_PLACES=407, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2858, PETRI_PLACES=420, PETRI_TRANSITIONS=290} [2024-06-28 03:10:06,867 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 389 predicate places. [2024-06-28 03:10:06,867 INFO L495 AbstractCegarLoop]: Abstraction has has 420 places, 290 transitions, 2858 flow [2024-06-28 03:10:06,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:10:06,868 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:10:06,868 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:10:06,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable283 [2024-06-28 03:10:06,868 INFO L420 AbstractCegarLoop]: === Iteration 285 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:10:06,868 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:10:06,868 INFO L85 PathProgramCache]: Analyzing trace with hash -590793140, now seen corresponding path program 22 times [2024-06-28 03:10:06,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:10:06,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994595467] [2024-06-28 03:10:06,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:10:06,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:10:06,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:10:08,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:10:08,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:10:08,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994595467] [2024-06-28 03:10:08,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994595467] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:10:08,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:10:08,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 03:10:08,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163733006] [2024-06-28 03:10:08,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:10:08,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 03:10:08,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:10:08,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 03:10:08,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2024-06-28 03:10:08,229 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 03:10:08,229 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 420 places, 290 transitions, 2858 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:10:08,229 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:10:08,229 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 03:10:08,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:10:08,778 INFO L124 PetriNetUnfolderBase]: 793/1575 cut-off events. [2024-06-28 03:10:08,779 INFO L125 PetriNetUnfolderBase]: For 388502/388502 co-relation queries the response was YES. [2024-06-28 03:10:08,794 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12151 conditions, 1575 events. 793/1575 cut-off events. For 388502/388502 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 9588 event pairs, 165 based on Foata normal form. 2/1576 useless extension candidates. Maximal degree in co-relation 11989. Up to 1049 conditions per place. [2024-06-28 03:10:08,799 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 216 selfloop transitions, 90 changer transitions 0/308 dead transitions. [2024-06-28 03:10:08,799 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 426 places, 308 transitions, 3518 flow [2024-06-28 03:10:08,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:10:08,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:10:08,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 148 transitions. [2024-06-28 03:10:08,800 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3854166666666667 [2024-06-28 03:10:08,800 INFO L175 Difference]: Start difference. First operand has 420 places, 290 transitions, 2858 flow. Second operand 12 states and 148 transitions. [2024-06-28 03:10:08,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 426 places, 308 transitions, 3518 flow [2024-06-28 03:10:10,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 411 places, 308 transitions, 3306 flow, removed 6 selfloop flow, removed 15 redundant places. [2024-06-28 03:10:10,184 INFO L231 Difference]: Finished difference. Result has 412 places, 290 transitions, 2830 flow [2024-06-28 03:10:10,184 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2646, PETRI_DIFFERENCE_MINUEND_PLACES=400, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2830, PETRI_PLACES=412, PETRI_TRANSITIONS=290} [2024-06-28 03:10:10,184 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 381 predicate places. [2024-06-28 03:10:10,184 INFO L495 AbstractCegarLoop]: Abstraction has has 412 places, 290 transitions, 2830 flow [2024-06-28 03:10:10,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:10:10,185 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:10:10,185 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:10:10,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable284 [2024-06-28 03:10:10,185 INFO L420 AbstractCegarLoop]: === Iteration 286 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:10:10,185 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:10:10,185 INFO L85 PathProgramCache]: Analyzing trace with hash -1375545234, now seen corresponding path program 38 times [2024-06-28 03:10:10,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:10:10,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911461006] [2024-06-28 03:10:10,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:10:10,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:10:10,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:10:11,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:10:11,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:10:11,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911461006] [2024-06-28 03:10:11,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911461006] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:10:11,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:10:11,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 03:10:11,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986720421] [2024-06-28 03:10:11,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:10:11,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 03:10:11,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:10:11,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 03:10:11,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2024-06-28 03:10:11,446 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 03:10:11,446 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 412 places, 290 transitions, 2830 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:10:11,446 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:10:11,446 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 03:10:11,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:10:12,012 INFO L124 PetriNetUnfolderBase]: 775/1549 cut-off events. [2024-06-28 03:10:12,013 INFO L125 PetriNetUnfolderBase]: For 412464/412464 co-relation queries the response was YES. [2024-06-28 03:10:12,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9176 conditions, 1549 events. 775/1549 cut-off events. For 412464/412464 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 9487 event pairs, 152 based on Foata normal form. 26/1574 useless extension candidates. Maximal degree in co-relation 9017. Up to 948 conditions per place. [2024-06-28 03:10:12,029 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 214 selfloop transitions, 77 changer transitions 21/314 dead transitions. [2024-06-28 03:10:12,029 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 424 places, 314 transitions, 3570 flow [2024-06-28 03:10:12,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 03:10:12,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 03:10:12,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 160 transitions. [2024-06-28 03:10:12,030 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38461538461538464 [2024-06-28 03:10:12,030 INFO L175 Difference]: Start difference. First operand has 412 places, 290 transitions, 2830 flow. Second operand 13 states and 160 transitions. [2024-06-28 03:10:12,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 424 places, 314 transitions, 3570 flow [2024-06-28 03:10:13,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 412 places, 314 transitions, 3333 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-06-28 03:10:13,035 INFO L231 Difference]: Finished difference. Result has 413 places, 279 transitions, 2656 flow [2024-06-28 03:10:13,035 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2593, PETRI_DIFFERENCE_MINUEND_PLACES=400, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2656, PETRI_PLACES=413, PETRI_TRANSITIONS=279} [2024-06-28 03:10:13,035 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 382 predicate places. [2024-06-28 03:10:13,035 INFO L495 AbstractCegarLoop]: Abstraction has has 413 places, 279 transitions, 2656 flow [2024-06-28 03:10:13,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:10:13,036 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:10:13,036 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:10:13,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable285 [2024-06-28 03:10:13,036 INFO L420 AbstractCegarLoop]: === Iteration 287 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:10:13,036 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:10:13,036 INFO L85 PathProgramCache]: Analyzing trace with hash 559638168, now seen corresponding path program 23 times [2024-06-28 03:10:13,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:10:13,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752043324] [2024-06-28 03:10:13,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:10:13,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:10:13,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:10:13,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:10:13,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:10:13,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752043324] [2024-06-28 03:10:13,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752043324] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:10:13,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:10:13,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:10:13,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450425076] [2024-06-28 03:10:13,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:10:13,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:10:13,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:10:13,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:10:13,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:10:13,999 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 03:10:14,000 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 413 places, 279 transitions, 2656 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:10:14,000 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:10:14,000 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 03:10:14,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:10:14,368 INFO L124 PetriNetUnfolderBase]: 703/1409 cut-off events. [2024-06-28 03:10:14,369 INFO L125 PetriNetUnfolderBase]: For 201379/201379 co-relation queries the response was YES. [2024-06-28 03:10:14,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8427 conditions, 1409 events. 703/1409 cut-off events. For 201379/201379 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 8554 event pairs, 199 based on Foata normal form. 2/1410 useless extension candidates. Maximal degree in co-relation 8267. Up to 1214 conditions per place. [2024-06-28 03:10:14,386 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 251 selfloop transitions, 44 changer transitions 0/297 dead transitions. [2024-06-28 03:10:14,386 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 414 places, 297 transitions, 3304 flow [2024-06-28 03:10:14,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:10:14,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:10:14,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 137 transitions. [2024-06-28 03:10:14,387 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3567708333333333 [2024-06-28 03:10:14,388 INFO L175 Difference]: Start difference. First operand has 413 places, 279 transitions, 2656 flow. Second operand 12 states and 137 transitions. [2024-06-28 03:10:14,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 414 places, 297 transitions, 3304 flow [2024-06-28 03:10:15,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 400 places, 297 transitions, 3125 flow, removed 6 selfloop flow, removed 14 redundant places. [2024-06-28 03:10:15,296 INFO L231 Difference]: Finished difference. Result has 401 places, 280 transitions, 2585 flow [2024-06-28 03:10:15,296 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2477, PETRI_DIFFERENCE_MINUEND_PLACES=389, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2585, PETRI_PLACES=401, PETRI_TRANSITIONS=280} [2024-06-28 03:10:15,297 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 370 predicate places. [2024-06-28 03:10:15,297 INFO L495 AbstractCegarLoop]: Abstraction has has 401 places, 280 transitions, 2585 flow [2024-06-28 03:10:15,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:10:15,297 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:10:15,297 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:10:15,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable286 [2024-06-28 03:10:15,297 INFO L420 AbstractCegarLoop]: === Iteration 288 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:10:15,297 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:10:15,298 INFO L85 PathProgramCache]: Analyzing trace with hash 1070357858, now seen corresponding path program 24 times [2024-06-28 03:10:15,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:10:15,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930139840] [2024-06-28 03:10:15,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:10:15,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:10:15,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:10:16,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:10:16,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:10:16,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930139840] [2024-06-28 03:10:16,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930139840] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:10:16,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:10:16,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:10:16,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315845594] [2024-06-28 03:10:16,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:10:16,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:10:16,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:10:16,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:10:16,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:10:16,324 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 03:10:16,325 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 401 places, 280 transitions, 2585 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:10:16,325 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:10:16,325 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 03:10:16,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:10:16,672 INFO L124 PetriNetUnfolderBase]: 707/1417 cut-off events. [2024-06-28 03:10:16,672 INFO L125 PetriNetUnfolderBase]: For 192728/192728 co-relation queries the response was YES. [2024-06-28 03:10:16,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8313 conditions, 1417 events. 707/1417 cut-off events. For 192728/192728 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 8634 event pairs, 199 based on Foata normal form. 2/1418 useless extension candidates. Maximal degree in co-relation 8156. Up to 1200 conditions per place. [2024-06-28 03:10:16,690 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 251 selfloop transitions, 45 changer transitions 0/298 dead transitions. [2024-06-28 03:10:16,691 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 412 places, 298 transitions, 3235 flow [2024-06-28 03:10:16,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:10:16,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:10:16,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 139 transitions. [2024-06-28 03:10:16,692 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3619791666666667 [2024-06-28 03:10:16,692 INFO L175 Difference]: Start difference. First operand has 401 places, 280 transitions, 2585 flow. Second operand 12 states and 139 transitions. [2024-06-28 03:10:16,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 412 places, 298 transitions, 3235 flow [2024-06-28 03:10:17,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 402 places, 298 transitions, 3137 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-28 03:10:17,476 INFO L231 Difference]: Finished difference. Result has 403 places, 281 transitions, 2599 flow [2024-06-28 03:10:17,476 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2487, PETRI_DIFFERENCE_MINUEND_PLACES=391, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2599, PETRI_PLACES=403, PETRI_TRANSITIONS=281} [2024-06-28 03:10:17,476 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 372 predicate places. [2024-06-28 03:10:17,476 INFO L495 AbstractCegarLoop]: Abstraction has has 403 places, 281 transitions, 2599 flow [2024-06-28 03:10:17,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:10:17,477 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:10:17,477 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:10:17,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable287 [2024-06-28 03:10:17,477 INFO L420 AbstractCegarLoop]: === Iteration 289 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:10:17,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:10:17,477 INFO L85 PathProgramCache]: Analyzing trace with hash -1445214706, now seen corresponding path program 25 times [2024-06-28 03:10:17,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:10:17,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430152339] [2024-06-28 03:10:17,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:10:17,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:10:17,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:10:18,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:10:18,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:10:18,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430152339] [2024-06-28 03:10:18,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430152339] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:10:18,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:10:18,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:10:18,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799460280] [2024-06-28 03:10:18,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:10:18,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:10:18,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:10:18,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:10:18,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:10:18,512 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 03:10:18,512 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 403 places, 281 transitions, 2599 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:10:18,512 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:10:18,512 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 03:10:18,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:10:18,888 INFO L124 PetriNetUnfolderBase]: 711/1425 cut-off events. [2024-06-28 03:10:18,889 INFO L125 PetriNetUnfolderBase]: For 195696/195696 co-relation queries the response was YES. [2024-06-28 03:10:18,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8376 conditions, 1425 events. 711/1425 cut-off events. For 195696/195696 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 8690 event pairs, 201 based on Foata normal form. 2/1426 useless extension candidates. Maximal degree in co-relation 8218. Up to 1340 conditions per place. [2024-06-28 03:10:18,905 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 274 selfloop transitions, 23 changer transitions 0/299 dead transitions. [2024-06-28 03:10:18,906 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 414 places, 299 transitions, 3255 flow [2024-06-28 03:10:18,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:10:18,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:10:18,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 131 transitions. [2024-06-28 03:10:18,907 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3411458333333333 [2024-06-28 03:10:18,907 INFO L175 Difference]: Start difference. First operand has 403 places, 281 transitions, 2599 flow. Second operand 12 states and 131 transitions. [2024-06-28 03:10:18,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 414 places, 299 transitions, 3255 flow [2024-06-28 03:10:19,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 404 places, 299 transitions, 3153 flow, removed 7 selfloop flow, removed 10 redundant places. [2024-06-28 03:10:19,836 INFO L231 Difference]: Finished difference. Result has 405 places, 282 transitions, 2567 flow [2024-06-28 03:10:19,837 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2497, PETRI_DIFFERENCE_MINUEND_PLACES=393, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2567, PETRI_PLACES=405, PETRI_TRANSITIONS=282} [2024-06-28 03:10:19,837 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 374 predicate places. [2024-06-28 03:10:19,837 INFO L495 AbstractCegarLoop]: Abstraction has has 405 places, 282 transitions, 2567 flow [2024-06-28 03:10:19,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:10:19,837 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:10:19,837 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:10:19,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable288 [2024-06-28 03:10:19,837 INFO L420 AbstractCegarLoop]: === Iteration 290 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:10:19,838 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:10:19,838 INFO L85 PathProgramCache]: Analyzing trace with hash -1264317538, now seen corresponding path program 26 times [2024-06-28 03:10:19,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:10:19,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251168042] [2024-06-28 03:10:19,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:10:19,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:10:19,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:10:20,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:10:20,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:10:20,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251168042] [2024-06-28 03:10:20,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251168042] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:10:20,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:10:20,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 03:10:20,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388194200] [2024-06-28 03:10:20,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:10:20,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 03:10:20,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:10:20,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 03:10:20,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2024-06-28 03:10:20,909 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 03:10:20,910 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 405 places, 282 transitions, 2567 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:10:20,910 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:10:20,910 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 03:10:20,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:10:21,297 INFO L124 PetriNetUnfolderBase]: 723/1453 cut-off events. [2024-06-28 03:10:21,298 INFO L125 PetriNetUnfolderBase]: For 249933/249933 co-relation queries the response was YES. [2024-06-28 03:10:21,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8477 conditions, 1453 events. 723/1453 cut-off events. For 249933/249933 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 8886 event pairs, 191 based on Foata normal form. 8/1460 useless extension candidates. Maximal degree in co-relation 8318. Up to 1234 conditions per place. [2024-06-28 03:10:21,315 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 250 selfloop transitions, 39 changer transitions 12/303 dead transitions. [2024-06-28 03:10:21,315 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 416 places, 303 transitions, 3265 flow [2024-06-28 03:10:21,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:10:21,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:10:21,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 142 transitions. [2024-06-28 03:10:21,316 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3697916666666667 [2024-06-28 03:10:21,317 INFO L175 Difference]: Start difference. First operand has 405 places, 282 transitions, 2567 flow. Second operand 12 states and 142 transitions. [2024-06-28 03:10:21,317 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 416 places, 303 transitions, 3265 flow [2024-06-28 03:10:22,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 406 places, 303 transitions, 3205 flow, removed 8 selfloop flow, removed 10 redundant places. [2024-06-28 03:10:22,395 INFO L231 Difference]: Finished difference. Result has 407 places, 279 transitions, 2561 flow [2024-06-28 03:10:22,395 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2507, PETRI_DIFFERENCE_MINUEND_PLACES=395, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2561, PETRI_PLACES=407, PETRI_TRANSITIONS=279} [2024-06-28 03:10:22,395 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 376 predicate places. [2024-06-28 03:10:22,395 INFO L495 AbstractCegarLoop]: Abstraction has has 407 places, 279 transitions, 2561 flow [2024-06-28 03:10:22,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:10:22,396 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:10:22,396 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:10:22,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable289 [2024-06-28 03:10:22,396 INFO L420 AbstractCegarLoop]: === Iteration 291 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:10:22,396 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:10:22,396 INFO L85 PathProgramCache]: Analyzing trace with hash 208344802, now seen corresponding path program 27 times [2024-06-28 03:10:22,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:10:22,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975151398] [2024-06-28 03:10:22,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:10:22,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:10:22,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:10:23,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:10:23,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:10:23,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975151398] [2024-06-28 03:10:23,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975151398] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:10:23,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:10:23,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 03:10:23,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239987172] [2024-06-28 03:10:23,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:10:23,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 03:10:23,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:10:23,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 03:10:23,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2024-06-28 03:10:23,572 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 03:10:23,572 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 407 places, 279 transitions, 2561 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:10:23,572 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:10:23,572 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 03:10:23,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:10:24,040 INFO L124 PetriNetUnfolderBase]: 707/1417 cut-off events. [2024-06-28 03:10:24,040 INFO L125 PetriNetUnfolderBase]: For 201674/201674 co-relation queries the response was YES. [2024-06-28 03:10:24,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8350 conditions, 1417 events. 707/1417 cut-off events. For 201674/201674 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 8620 event pairs, 203 based on Foata normal form. 2/1418 useless extension candidates. Maximal degree in co-relation 8190. Up to 1344 conditions per place. [2024-06-28 03:10:24,057 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 265 selfloop transitions, 29 changer transitions 0/296 dead transitions. [2024-06-28 03:10:24,057 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 413 places, 296 transitions, 3211 flow [2024-06-28 03:10:24,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:10:24,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:10:24,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 129 transitions. [2024-06-28 03:10:24,058 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3359375 [2024-06-28 03:10:24,058 INFO L175 Difference]: Start difference. First operand has 407 places, 279 transitions, 2561 flow. Second operand 12 states and 129 transitions. [2024-06-28 03:10:24,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 413 places, 296 transitions, 3211 flow [2024-06-28 03:10:25,146 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 403 places, 296 transitions, 3129 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-28 03:10:25,149 INFO L231 Difference]: Finished difference. Result has 404 places, 280 transitions, 2564 flow [2024-06-28 03:10:25,149 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2479, PETRI_DIFFERENCE_MINUEND_PLACES=392, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2564, PETRI_PLACES=404, PETRI_TRANSITIONS=280} [2024-06-28 03:10:25,149 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 373 predicate places. [2024-06-28 03:10:25,149 INFO L495 AbstractCegarLoop]: Abstraction has has 404 places, 280 transitions, 2564 flow [2024-06-28 03:10:25,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:10:25,150 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:10:25,150 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:10:25,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable290 [2024-06-28 03:10:25,150 INFO L420 AbstractCegarLoop]: === Iteration 292 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:10:25,150 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:10:25,150 INFO L85 PathProgramCache]: Analyzing trace with hash 1512857008, now seen corresponding path program 28 times [2024-06-28 03:10:25,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:10:25,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394658711] [2024-06-28 03:10:25,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:10:25,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:10:25,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:10:26,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:10:26,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:10:26,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394658711] [2024-06-28 03:10:26,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394658711] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:10:26,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:10:26,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 03:10:26,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299748581] [2024-06-28 03:10:26,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:10:26,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 03:10:26,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:10:26,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 03:10:26,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-06-28 03:10:26,380 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 03:10:26,380 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 404 places, 280 transitions, 2564 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:10:26,380 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:10:26,380 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 03:10:26,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:10:26,889 INFO L124 PetriNetUnfolderBase]: 711/1425 cut-off events. [2024-06-28 03:10:26,889 INFO L125 PetriNetUnfolderBase]: For 198742/198742 co-relation queries the response was YES. [2024-06-28 03:10:26,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8379 conditions, 1425 events. 711/1425 cut-off events. For 198742/198742 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 8688 event pairs, 197 based on Foata normal form. 2/1426 useless extension candidates. Maximal degree in co-relation 8220. Up to 1236 conditions per place. [2024-06-28 03:10:26,908 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 257 selfloop transitions, 40 changer transitions 0/299 dead transitions. [2024-06-28 03:10:26,908 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 415 places, 299 transitions, 3228 flow [2024-06-28 03:10:26,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:10:26,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:10:26,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 141 transitions. [2024-06-28 03:10:26,909 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3671875 [2024-06-28 03:10:26,909 INFO L175 Difference]: Start difference. First operand has 404 places, 280 transitions, 2564 flow. Second operand 12 states and 141 transitions. [2024-06-28 03:10:26,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 415 places, 299 transitions, 3228 flow [2024-06-28 03:10:28,053 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 405 places, 299 transitions, 3155 flow, removed 9 selfloop flow, removed 10 redundant places. [2024-06-28 03:10:28,056 INFO L231 Difference]: Finished difference. Result has 406 places, 281 transitions, 2599 flow [2024-06-28 03:10:28,057 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2491, PETRI_DIFFERENCE_MINUEND_PLACES=394, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2599, PETRI_PLACES=406, PETRI_TRANSITIONS=281} [2024-06-28 03:10:28,057 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 375 predicate places. [2024-06-28 03:10:28,057 INFO L495 AbstractCegarLoop]: Abstraction has has 406 places, 281 transitions, 2599 flow [2024-06-28 03:10:28,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:10:28,057 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:10:28,057 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:10:28,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable291 [2024-06-28 03:10:28,057 INFO L420 AbstractCegarLoop]: === Iteration 293 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:10:28,058 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:10:28,058 INFO L85 PathProgramCache]: Analyzing trace with hash 218472502, now seen corresponding path program 29 times [2024-06-28 03:10:28,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:10:28,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263921620] [2024-06-28 03:10:28,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:10:28,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:10:28,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:10:29,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:10:29,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:10:29,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263921620] [2024-06-28 03:10:29,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263921620] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:10:29,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:10:29,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 03:10:29,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934488225] [2024-06-28 03:10:29,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:10:29,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 03:10:29,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:10:29,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 03:10:29,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2024-06-28 03:10:29,166 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 03:10:29,166 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 406 places, 281 transitions, 2599 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:10:29,166 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:10:29,166 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 03:10:29,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:10:29,657 INFO L124 PetriNetUnfolderBase]: 722/1446 cut-off events. [2024-06-28 03:10:29,658 INFO L125 PetriNetUnfolderBase]: For 220494/220494 co-relation queries the response was YES. [2024-06-28 03:10:29,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8822 conditions, 1446 events. 722/1446 cut-off events. For 220494/220494 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 8815 event pairs, 204 based on Foata normal form. 2/1447 useless extension candidates. Maximal degree in co-relation 8662. Up to 1294 conditions per place. [2024-06-28 03:10:29,672 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 269 selfloop transitions, 29 changer transitions 0/300 dead transitions. [2024-06-28 03:10:29,673 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 417 places, 300 transitions, 3553 flow [2024-06-28 03:10:29,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:10:29,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:10:29,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 133 transitions. [2024-06-28 03:10:29,674 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3463541666666667 [2024-06-28 03:10:29,674 INFO L175 Difference]: Start difference. First operand has 406 places, 281 transitions, 2599 flow. Second operand 12 states and 133 transitions. [2024-06-28 03:10:29,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 417 places, 300 transitions, 3553 flow [2024-06-28 03:10:30,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 407 places, 300 transitions, 3455 flow, removed 10 selfloop flow, removed 10 redundant places. [2024-06-28 03:10:30,913 INFO L231 Difference]: Finished difference. Result has 408 places, 283 transitions, 2613 flow [2024-06-28 03:10:30,914 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2501, PETRI_DIFFERENCE_MINUEND_PLACES=396, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2613, PETRI_PLACES=408, PETRI_TRANSITIONS=283} [2024-06-28 03:10:30,915 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 377 predicate places. [2024-06-28 03:10:30,915 INFO L495 AbstractCegarLoop]: Abstraction has has 408 places, 283 transitions, 2613 flow [2024-06-28 03:10:30,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:10:30,915 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:10:30,915 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:10:30,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable292 [2024-06-28 03:10:30,916 INFO L420 AbstractCegarLoop]: === Iteration 294 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:10:30,916 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:10:30,916 INFO L85 PathProgramCache]: Analyzing trace with hash 208353172, now seen corresponding path program 30 times [2024-06-28 03:10:30,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:10:30,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714074577] [2024-06-28 03:10:30,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:10:30,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:10:30,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:10:31,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:10:31,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:10:31,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714074577] [2024-06-28 03:10:31,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714074577] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:10:31,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:10:31,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 03:10:31,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495155790] [2024-06-28 03:10:31,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:10:31,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 03:10:31,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:10:31,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 03:10:31,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2024-06-28 03:10:31,979 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 03:10:31,979 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 408 places, 283 transitions, 2613 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:10:31,979 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:10:31,979 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 03:10:31,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Killed by 15