./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/rfi003_tso.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/rfi003_tso.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb4cb34f 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/rfi003_tso.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/rfi003_tso.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-eb4cb34-m [2024-06-21 20:02:36,483 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-21 20:02:36,542 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-21 20:02:36,551 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-21 20:02:36,552 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-21 20:02:36,591 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-21 20:02:36,591 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-21 20:02:36,592 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-21 20:02:36,593 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-21 20:02:36,596 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-21 20:02:36,597 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-21 20:02:36,597 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-21 20:02:36,598 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-21 20:02:36,599 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-21 20:02:36,599 INFO L153 SettingsManager]: * Use SBE=true [2024-06-21 20:02:36,600 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-21 20:02:36,600 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-21 20:02:36,600 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-21 20:02:36,600 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-21 20:02:36,601 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-21 20:02:36,601 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-21 20:02:36,601 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-21 20:02:36,602 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-21 20:02:36,602 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-21 20:02:36,602 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-21 20:02:36,603 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-21 20:02:36,603 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-21 20:02:36,603 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-21 20:02:36,604 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-21 20:02:36,604 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-21 20:02:36,605 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-21 20:02:36,605 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-21 20:02:36,605 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-21 20:02:36,606 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-21 20:02:36,606 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-21 20:02:36,606 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-21 20:02:36,606 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-21 20:02:36,607 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-21 20:02:36,607 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-21 20:02:36,607 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-21 20:02:36,607 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-21 20:02:36,608 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-21 20:02:36,608 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-21 20:02:36,608 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-21 20:02:36,883 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-21 20:02:36,915 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-21 20:02:36,919 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-21 20:02:36,921 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-21 20:02:36,921 INFO L274 PluginConnector]: CDTParser initialized [2024-06-21 20:02:36,923 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/rfi003_tso.i [2024-06-21 20:02:38,114 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-21 20:02:38,388 INFO L384 CDTParser]: Found 1 translation units. [2024-06-21 20:02:38,389 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi003_tso.i [2024-06-21 20:02:38,404 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a11b21a43/59a60aa2dc5349318a8141b5d556dab9/FLAGd7719f819 [2024-06-21 20:02:38,417 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a11b21a43/59a60aa2dc5349318a8141b5d556dab9 [2024-06-21 20:02:38,419 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-21 20:02:38,420 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-21 20:02:38,420 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/rfi003_tso.yml/witness.yml [2024-06-21 20:02:38,582 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-21 20:02:38,583 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-21 20:02:38,584 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-21 20:02:38,584 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-21 20:02:38,589 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-21 20:02:38,590 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.06 08:02:38" (1/2) ... [2024-06-21 20:02:38,590 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d05e4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 08:02:38, skipping insertion in model container [2024-06-21 20:02:38,591 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.06 08:02:38" (1/2) ... [2024-06-21 20:02:38,593 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@63b60508 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 08:02:38, skipping insertion in model container [2024-06-21 20:02:38,593 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 21.06 08:02:38" (2/2) ... [2024-06-21 20:02:38,594 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d05e4b and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 08:02:38, skipping insertion in model container [2024-06-21 20:02:38,594 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 21.06 08:02:38" (2/2) ... [2024-06-21 20:02:38,594 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-21 20:02:38,667 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-21 20:02:38,669 INFO L97 edCorrectnessWitness]: Location invariant before [L839-L839] (((((((((((((((! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 1)) && (! multithreaded || ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2))) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (((((((((((((((0 <= __unbuffered_cnt && y$flush_delayed == (_Bool)0) && y$r_buff0_thd0 == (_Bool)0) && y$r_buff0_thd1 == (_Bool)0) && y$r_buff1_thd0 == (_Bool)0) && y$r_buff1_thd1 == (_Bool)0) && y$read_delayed == (_Bool)0) && y$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (x == 0 || x == 1)) && (y$w_buff0 == 0 || y$w_buff0 == 1)) && (y$w_buff1 == 0 || y$w_buff1 == 1)) && ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2)) && ((__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1) || __unbuffered_p1_EBX == 2)) && ((y == 0 || y == 1) || y == 2)) && ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2)))) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 1))) && (! multithreaded || ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2))) && (! multithreaded || ((__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1) || __unbuffered_p1_EBX == 2))) && (! multithreaded || 0 <= __unbuffered_cnt) [2024-06-21 20:02:38,669 INFO L97 edCorrectnessWitness]: Location invariant before [L838-L838] (((((((((((((((! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 1)) && (! multithreaded || ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2))) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (((((((((((((((0 <= __unbuffered_cnt && y$flush_delayed == (_Bool)0) && y$r_buff0_thd0 == (_Bool)0) && y$r_buff0_thd1 == (_Bool)0) && y$r_buff1_thd0 == (_Bool)0) && y$r_buff1_thd1 == (_Bool)0) && y$read_delayed == (_Bool)0) && y$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (x == 0 || x == 1)) && (y$w_buff0 == 0 || y$w_buff0 == 1)) && (y$w_buff1 == 0 || y$w_buff1 == 1)) && ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2)) && ((__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1) || __unbuffered_p1_EBX == 2)) && ((y == 0 || y == 1) || y == 2)) && ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2)))) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 1))) && (! multithreaded || ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2))) && (! multithreaded || ((__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1) || __unbuffered_p1_EBX == 2))) && (! multithreaded || 0 <= __unbuffered_cnt) [2024-06-21 20:02:38,669 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-21 20:02:38,670 INFO L106 edCorrectnessWitness]: ghost_update [L836-L836] multithreaded = 1; [2024-06-21 20:02:38,717 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-21 20:02:39,081 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-21 20:02:39,110 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-21 20:02:39,233 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-21 20:02:39,265 INFO L206 MainTranslator]: Completed translation [2024-06-21 20:02:39,266 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 08:02:39 WrapperNode [2024-06-21 20:02:39,266 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-21 20:02:39,267 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-21 20:02:39,267 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-21 20:02:39,267 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-21 20:02:39,273 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 21.06 08:02:39" (1/1) ... [2024-06-21 20:02:39,297 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 21.06 08:02:39" (1/1) ... [2024-06-21 20:02:39,339 INFO L138 Inliner]: procedures = 174, calls = 40, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 177 [2024-06-21 20:02:39,340 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-21 20:02:39,341 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-21 20:02:39,341 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-21 20:02:39,341 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-21 20:02:39,350 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 08:02:39" (1/1) ... [2024-06-21 20:02:39,350 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 08:02:39" (1/1) ... [2024-06-21 20:02:39,355 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 08:02:39" (1/1) ... [2024-06-21 20:02:39,370 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]. [2024-06-21 20:02:39,370 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 08:02:39" (1/1) ... [2024-06-21 20:02:39,371 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 08:02:39" (1/1) ... [2024-06-21 20:02:39,380 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 08:02:39" (1/1) ... [2024-06-21 20:02:39,382 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 08:02:39" (1/1) ... [2024-06-21 20:02:39,384 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 08:02:39" (1/1) ... [2024-06-21 20:02:39,386 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 08:02:39" (1/1) ... [2024-06-21 20:02:39,390 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-21 20:02:39,391 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-21 20:02:39,391 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-21 20:02:39,391 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-21 20:02:39,392 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 08:02:39" (1/1) ... [2024-06-21 20:02:39,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-21 20:02:39,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-21 20:02:39,449 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) [2024-06-21 20:02:39,512 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 [2024-06-21 20:02:39,544 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-21 20:02:39,544 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-21 20:02:39,545 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-21 20:02:39,545 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-21 20:02:39,545 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-21 20:02:39,546 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-21 20:02:39,546 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-21 20:02:39,546 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-21 20:02:39,546 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-21 20:02:39,546 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-21 20:02:39,547 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-21 20:02:39,677 INFO L244 CfgBuilder]: Building ICFG [2024-06-21 20:02:39,679 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-21 20:02:40,112 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-21 20:02:40,112 INFO L293 CfgBuilder]: Performing block encoding [2024-06-21 20:02:40,367 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-21 20:02:40,367 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-21 20:02:40,370 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.06 08:02:40 BoogieIcfgContainer [2024-06-21 20:02:40,384 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-21 20:02:40,387 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-21 20:02:40,387 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-21 20:02:40,390 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-21 20:02:40,391 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.06 08:02:38" (1/4) ... [2024-06-21 20:02:40,392 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f9a8059 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.06 08:02:40, skipping insertion in model container [2024-06-21 20:02:40,392 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 21.06 08:02:38" (2/4) ... [2024-06-21 20:02:40,397 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f9a8059 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 21.06 08:02:40, skipping insertion in model container [2024-06-21 20:02:40,397 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 08:02:39" (3/4) ... [2024-06-21 20:02:40,398 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f9a8059 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 21.06 08:02:40, skipping insertion in model container [2024-06-21 20:02:40,398 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.06 08:02:40" (4/4) ... [2024-06-21 20:02:40,399 INFO L112 eAbstractionObserver]: Analyzing ICFG rfi003_tso.i [2024-06-21 20:02:40,446 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-21 20:02:40,446 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-21 20:02:40,446 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-21 20:02:40,512 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-21 20:02:40,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 39 places, 32 transitions, 72 flow [2024-06-21 20:02:40,586 INFO L124 PetriNetUnfolderBase]: 0/30 cut-off events. [2024-06-21 20:02:40,587 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-21 20:02:40,589 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 43 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. [2024-06-21 20:02:40,589 INFO L82 GeneralOperation]: Start removeDead. Operand has 39 places, 32 transitions, 72 flow [2024-06-21 20:02:40,594 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 31 places, 24 transitions, 54 flow [2024-06-21 20:02:40,610 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-21 20:02:40,616 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;@3c0fb86b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-21 20:02:40,617 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-21 20:02:40,621 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-21 20:02:40,621 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-21 20:02:40,621 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-21 20:02:40,622 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:02:40,622 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-21 20:02:40,623 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)] === [2024-06-21 20:02:40,627 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:02:40,628 INFO L85 PathProgramCache]: Analyzing trace with hash 410284939, now seen corresponding path program 1 times [2024-06-21 20:02:40,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:02:40,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596843395] [2024-06-21 20:02:40,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:02:40,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:02:40,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:02:41,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:02:41,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:02:41,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596843395] [2024-06-21 20:02:41,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596843395] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:02:41,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:02:41,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-21 20:02:41,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53729791] [2024-06-21 20:02:41,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:02:41,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-21 20:02:41,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:02:41,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-21 20:02:41,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-21 20:02:41,748 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 20:02:41,750 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 24 transitions, 54 flow. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:02:41,751 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:02:41,751 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 20:02:41,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:02:41,947 INFO L124 PetriNetUnfolderBase]: 216/391 cut-off events. [2024-06-21 20:02:41,947 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-06-21 20:02:41,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 792 conditions, 391 events. 216/391 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1471 event pairs, 133 based on Foata normal form. 1/385 useless extension candidates. Maximal degree in co-relation 781. Up to 378 conditions per place. [2024-06-21 20:02:41,954 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 23 selfloop transitions, 3 changer transitions 0/30 dead transitions. [2024-06-21 20:02:41,954 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 30 transitions, 121 flow [2024-06-21 20:02:41,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-21 20:02:41,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-21 20:02:41,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 52 transitions. [2024-06-21 20:02:41,965 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2024-06-21 20:02:41,967 INFO L175 Difference]: Start difference. First operand has 31 places, 24 transitions, 54 flow. Second operand 3 states and 52 transitions. [2024-06-21 20:02:41,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 30 transitions, 121 flow [2024-06-21 20:02:41,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 30 transitions, 118 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-21 20:02:41,971 INFO L231 Difference]: Finished difference. Result has 32 places, 26 transitions, 73 flow [2024-06-21 20:02:41,973 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} [2024-06-21 20:02:41,976 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 1 predicate places. [2024-06-21 20:02:41,977 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 26 transitions, 73 flow [2024-06-21 20:02:41,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:02:41,977 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:02:41,978 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:02:41,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-21 20:02:41,978 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)] === [2024-06-21 20:02:41,979 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:02:41,979 INFO L85 PathProgramCache]: Analyzing trace with hash -853149910, now seen corresponding path program 1 times [2024-06-21 20:02:41,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:02:41,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916548236] [2024-06-21 20:02:41,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:02:41,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:02:41,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:02:42,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:02:42,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:02:42,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916548236] [2024-06-21 20:02:42,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916548236] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:02:42,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:02:42,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-21 20:02:42,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935459868] [2024-06-21 20:02:42,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:02:42,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-21 20:02:42,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:02:42,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-21 20:02:42,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-21 20:02:42,667 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 20:02:42,668 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 26 transitions, 73 flow. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 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) [2024-06-21 20:02:42,668 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:02:42,668 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 20:02:42,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:02:42,836 INFO L124 PetriNetUnfolderBase]: 207/376 cut-off events. [2024-06-21 20:02:42,837 INFO L125 PetriNetUnfolderBase]: For 79/79 co-relation queries the response was YES. [2024-06-21 20:02:42,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 856 conditions, 376 events. 207/376 cut-off events. For 79/79 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1426 event pairs, 76 based on Foata normal form. 6/381 useless extension candidates. Maximal degree in co-relation 844. Up to 336 conditions per place. [2024-06-21 20:02:42,843 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 29 selfloop transitions, 5 changer transitions 0/38 dead transitions. [2024-06-21 20:02:42,843 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 38 transitions, 171 flow [2024-06-21 20:02:42,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-21 20:02:42,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-21 20:02:42,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 68 transitions. [2024-06-21 20:02:42,847 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.53125 [2024-06-21 20:02:42,847 INFO L175 Difference]: Start difference. First operand has 32 places, 26 transitions, 73 flow. Second operand 4 states and 68 transitions. [2024-06-21 20:02:42,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 38 transitions, 171 flow [2024-06-21 20:02:42,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 38 transitions, 168 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-21 20:02:42,853 INFO L231 Difference]: Finished difference. Result has 35 places, 28 transitions, 97 flow [2024-06-21 20:02:42,854 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} [2024-06-21 20:02:42,854 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 4 predicate places. [2024-06-21 20:02:42,855 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 28 transitions, 97 flow [2024-06-21 20:02:42,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 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) [2024-06-21 20:02:42,855 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:02:42,855 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:02:42,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-21 20:02:42,856 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 20:02:42,856 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:02:42,856 INFO L85 PathProgramCache]: Analyzing trace with hash 1413365843, now seen corresponding path program 1 times [2024-06-21 20:02:42,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:02:42,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262519635] [2024-06-21 20:02:42,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:02:42,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:02:42,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:02:43,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:02:43,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:02:43,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262519635] [2024-06-21 20:02:43,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262519635] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:02:43,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:02:43,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 20:02:43,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548764832] [2024-06-21 20:02:43,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:02:43,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 20:02:43,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:02:43,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 20:02:43,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-21 20:02:43,508 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:02:43,509 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 28 transitions, 97 flow. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:02:43,509 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:02:43,509 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:02:43,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:02:43,767 INFO L124 PetriNetUnfolderBase]: 243/432 cut-off events. [2024-06-21 20:02:43,768 INFO L125 PetriNetUnfolderBase]: For 223/223 co-relation queries the response was YES. [2024-06-21 20:02:43,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1090 conditions, 432 events. 243/432 cut-off events. For 223/223 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1578 event pairs, 144 based on Foata normal form. 1/432 useless extension candidates. Maximal degree in co-relation 1075. Up to 421 conditions per place. [2024-06-21 20:02:43,771 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 27 selfloop transitions, 6 changer transitions 0/35 dead transitions. [2024-06-21 20:02:43,772 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 35 transitions, 181 flow [2024-06-21 20:02:43,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-21 20:02:43,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-21 20:02:43,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 57 transitions. [2024-06-21 20:02:43,773 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35625 [2024-06-21 20:02:43,773 INFO L175 Difference]: Start difference. First operand has 35 places, 28 transitions, 97 flow. Second operand 5 states and 57 transitions. [2024-06-21 20:02:43,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 35 transitions, 181 flow [2024-06-21 20:02:43,776 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 35 transitions, 172 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-21 20:02:43,777 INFO L231 Difference]: Finished difference. Result has 38 places, 30 transitions, 115 flow [2024-06-21 20:02:43,778 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=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=115, PETRI_PLACES=38, PETRI_TRANSITIONS=30} [2024-06-21 20:02:43,778 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 7 predicate places. [2024-06-21 20:02:43,778 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 30 transitions, 115 flow [2024-06-21 20:02:43,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:02:43,779 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:02:43,779 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:02:43,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-21 20:02:43,779 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)] === [2024-06-21 20:02:43,779 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:02:43,779 INFO L85 PathProgramCache]: Analyzing trace with hash 1318769256, now seen corresponding path program 1 times [2024-06-21 20:02:43,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:02:43,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659087395] [2024-06-21 20:02:43,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:02:43,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:02:43,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:02:45,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:02:45,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:02:45,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659087395] [2024-06-21 20:02:45,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659087395] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:02:45,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:02:45,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 20:02:45,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753771692] [2024-06-21 20:02:45,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:02:45,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 20:02:45,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:02:45,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 20:02:45,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-21 20:02:45,615 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 20:02:45,616 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 30 transitions, 115 flow. Second operand has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:02:45,616 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:02:45,616 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 20:02:45,616 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:02:45,934 INFO L124 PetriNetUnfolderBase]: 239/424 cut-off events. [2024-06-21 20:02:45,935 INFO L125 PetriNetUnfolderBase]: For 374/374 co-relation queries the response was YES. [2024-06-21 20:02:45,936 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1139 conditions, 424 events. 239/424 cut-off events. For 374/374 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1486 event pairs, 41 based on Foata normal form. 4/427 useless extension candidates. Maximal degree in co-relation 1123. Up to 362 conditions per place. [2024-06-21 20:02:45,938 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 36 selfloop transitions, 8 changer transitions 0/47 dead transitions. [2024-06-21 20:02:45,939 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 47 transitions, 241 flow [2024-06-21 20:02:45,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 20:02:45,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 20:02:45,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 86 transitions. [2024-06-21 20:02:45,941 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4479166666666667 [2024-06-21 20:02:45,941 INFO L175 Difference]: Start difference. First operand has 38 places, 30 transitions, 115 flow. Second operand 6 states and 86 transitions. [2024-06-21 20:02:45,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 47 transitions, 241 flow [2024-06-21 20:02:45,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 47 transitions, 230 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-21 20:02:45,944 INFO L231 Difference]: Finished difference. Result has 41 places, 31 transitions, 129 flow [2024-06-21 20:02:45,944 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=129, PETRI_PLACES=41, PETRI_TRANSITIONS=31} [2024-06-21 20:02:45,945 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 10 predicate places. [2024-06-21 20:02:45,945 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 31 transitions, 129 flow [2024-06-21 20:02:45,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:02:45,945 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:02:45,946 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:02:45,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-21 20:02:45,946 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)] === [2024-06-21 20:02:45,946 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:02:45,947 INFO L85 PathProgramCache]: Analyzing trace with hash 864669008, now seen corresponding path program 1 times [2024-06-21 20:02:45,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:02:45,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513475855] [2024-06-21 20:02:45,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:02:45,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:02:45,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:02:46,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:02:46,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:02:46,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513475855] [2024-06-21 20:02:46,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513475855] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:02:46,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:02:46,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 20:02:46,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499834549] [2024-06-21 20:02:46,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:02:46,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 20:02:46,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:02:46,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 20:02:46,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-21 20:02:46,582 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:02:46,583 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 31 transitions, 129 flow. Second operand has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:02:46,583 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:02:46,583 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:02:46,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:02:46,813 INFO L124 PetriNetUnfolderBase]: 237/421 cut-off events. [2024-06-21 20:02:46,813 INFO L125 PetriNetUnfolderBase]: For 600/600 co-relation queries the response was YES. [2024-06-21 20:02:46,814 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1229 conditions, 421 events. 237/421 cut-off events. For 600/600 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1477 event pairs, 103 based on Foata normal form. 1/421 useless extension candidates. Maximal degree in co-relation 1211. Up to 407 conditions per place. [2024-06-21 20:02:46,816 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 29 selfloop transitions, 8 changer transitions 0/39 dead transitions. [2024-06-21 20:02:46,816 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 39 transitions, 225 flow [2024-06-21 20:02:46,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 20:02:46,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 20:02:46,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 64 transitions. [2024-06-21 20:02:46,818 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-21 20:02:46,818 INFO L175 Difference]: Start difference. First operand has 41 places, 31 transitions, 129 flow. Second operand 6 states and 64 transitions. [2024-06-21 20:02:46,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 39 transitions, 225 flow [2024-06-21 20:02:46,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 39 transitions, 209 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-21 20:02:46,821 INFO L231 Difference]: Finished difference. Result has 44 places, 33 transitions, 146 flow [2024-06-21 20:02:46,821 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=113, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=146, PETRI_PLACES=44, PETRI_TRANSITIONS=33} [2024-06-21 20:02:46,822 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 13 predicate places. [2024-06-21 20:02:46,822 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 33 transitions, 146 flow [2024-06-21 20:02:46,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:02:46,822 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:02:46,823 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:02:46,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-21 20:02:46,823 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 20:02:46,823 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:02:46,824 INFO L85 PathProgramCache]: Analyzing trace with hash -1228321980, now seen corresponding path program 1 times [2024-06-21 20:02:46,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:02:46,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943678466] [2024-06-21 20:02:46,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:02:46,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:02:46,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:02:47,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:02:47,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:02:47,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943678466] [2024-06-21 20:02:47,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943678466] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:02:47,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:02:47,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 20:02:47,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631892922] [2024-06-21 20:02:47,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:02:47,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 20:02:47,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:02:47,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 20:02:47,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-21 20:02:47,396 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:02:47,396 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 33 transitions, 146 flow. Second operand has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:02:47,396 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:02:47,396 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:02:47,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:02:47,702 INFO L124 PetriNetUnfolderBase]: 243/431 cut-off events. [2024-06-21 20:02:47,703 INFO L125 PetriNetUnfolderBase]: For 830/830 co-relation queries the response was YES. [2024-06-21 20:02:47,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1329 conditions, 431 events. 243/431 cut-off events. For 830/830 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1528 event pairs, 82 based on Foata normal form. 2/432 useless extension candidates. Maximal degree in co-relation 1309. Up to 385 conditions per place. [2024-06-21 20:02:47,706 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 36 selfloop transitions, 11 changer transitions 0/49 dead transitions. [2024-06-21 20:02:47,707 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 49 transitions, 294 flow [2024-06-21 20:02:47,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 20:02:47,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 20:02:47,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 72 transitions. [2024-06-21 20:02:47,708 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-21 20:02:47,708 INFO L175 Difference]: Start difference. First operand has 44 places, 33 transitions, 146 flow. Second operand 6 states and 72 transitions. [2024-06-21 20:02:47,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 49 transitions, 294 flow [2024-06-21 20:02:47,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 49 transitions, 277 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-21 20:02:47,711 INFO L231 Difference]: Finished difference. Result has 46 places, 37 transitions, 176 flow [2024-06-21 20:02:47,712 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=129, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=176, PETRI_PLACES=46, PETRI_TRANSITIONS=37} [2024-06-21 20:02:47,712 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 15 predicate places. [2024-06-21 20:02:47,713 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 37 transitions, 176 flow [2024-06-21 20:02:47,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:02:47,713 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:02:47,713 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:02:47,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-21 20:02:47,714 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)] === [2024-06-21 20:02:47,714 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:02:47,714 INFO L85 PathProgramCache]: Analyzing trace with hash 1059058120, now seen corresponding path program 2 times [2024-06-21 20:02:47,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:02:47,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062783494] [2024-06-21 20:02:47,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:02:47,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:02:47,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:02:48,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:02:48,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:02:48,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062783494] [2024-06-21 20:02:48,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062783494] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:02:48,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:02:48,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 20:02:48,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160306080] [2024-06-21 20:02:48,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:02:48,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 20:02:48,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:02:48,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 20:02:48,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-21 20:02:48,294 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:02:48,294 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 37 transitions, 176 flow. Second operand has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:02:48,294 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:02:48,294 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:02:48,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:02:48,612 INFO L124 PetriNetUnfolderBase]: 239/426 cut-off events. [2024-06-21 20:02:48,612 INFO L125 PetriNetUnfolderBase]: For 1129/1129 co-relation queries the response was YES. [2024-06-21 20:02:48,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1400 conditions, 426 events. 239/426 cut-off events. For 1129/1129 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1518 event pairs, 88 based on Foata normal form. 2/426 useless extension candidates. Maximal degree in co-relation 1379. Up to 382 conditions per place. [2024-06-21 20:02:48,615 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 33 selfloop transitions, 11 changer transitions 0/46 dead transitions. [2024-06-21 20:02:48,615 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 46 transitions, 284 flow [2024-06-21 20:02:48,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 20:02:48,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 20:02:48,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 69 transitions. [2024-06-21 20:02:48,617 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.359375 [2024-06-21 20:02:48,617 INFO L175 Difference]: Start difference. First operand has 46 places, 37 transitions, 176 flow. Second operand 6 states and 69 transitions. [2024-06-21 20:02:48,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 46 transitions, 284 flow [2024-06-21 20:02:48,619 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 46 transitions, 270 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-06-21 20:02:48,620 INFO L231 Difference]: Finished difference. Result has 50 places, 37 transitions, 189 flow [2024-06-21 20:02:48,620 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=189, PETRI_PLACES=50, PETRI_TRANSITIONS=37} [2024-06-21 20:02:48,621 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 19 predicate places. [2024-06-21 20:02:48,621 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 37 transitions, 189 flow [2024-06-21 20:02:48,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:02:48,621 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:02:48,621 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:02:48,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-21 20:02:48,622 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)] === [2024-06-21 20:02:48,622 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:02:48,622 INFO L85 PathProgramCache]: Analyzing trace with hash 1034936338, now seen corresponding path program 1 times [2024-06-21 20:02:48,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:02:48,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931768646] [2024-06-21 20:02:48,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:02:48,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:02:48,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:02:49,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:02:49,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:02:49,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931768646] [2024-06-21 20:02:49,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931768646] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:02:49,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:02:49,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 20:02:49,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065528598] [2024-06-21 20:02:49,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:02:49,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 20:02:49,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:02:49,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 20:02:49,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-21 20:02:49,602 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:02:49,602 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 37 transitions, 189 flow. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 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) [2024-06-21 20:02:49,602 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:02:49,602 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:02:49,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:02:49,795 INFO L124 PetriNetUnfolderBase]: 237/422 cut-off events. [2024-06-21 20:02:49,796 INFO L125 PetriNetUnfolderBase]: For 1357/1357 co-relation queries the response was YES. [2024-06-21 20:02:49,797 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1435 conditions, 422 events. 237/422 cut-off events. For 1357/1357 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1497 event pairs, 99 based on Foata normal form. 1/422 useless extension candidates. Maximal degree in co-relation 1412. Up to 405 conditions per place. [2024-06-21 20:02:49,799 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 34 selfloop transitions, 10 changer transitions 0/46 dead transitions. [2024-06-21 20:02:49,799 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 46 transitions, 303 flow [2024-06-21 20:02:49,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 20:02:49,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 20:02:49,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 72 transitions. [2024-06-21 20:02:49,800 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32142857142857145 [2024-06-21 20:02:49,800 INFO L175 Difference]: Start difference. First operand has 50 places, 37 transitions, 189 flow. Second operand 7 states and 72 transitions. [2024-06-21 20:02:49,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 46 transitions, 303 flow [2024-06-21 20:02:49,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 46 transitions, 273 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-06-21 20:02:49,804 INFO L231 Difference]: Finished difference. Result has 51 places, 39 transitions, 198 flow [2024-06-21 20:02:49,804 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=198, PETRI_PLACES=51, PETRI_TRANSITIONS=39} [2024-06-21 20:02:49,805 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 20 predicate places. [2024-06-21 20:02:49,805 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 39 transitions, 198 flow [2024-06-21 20:02:49,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 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) [2024-06-21 20:02:49,805 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:02:49,805 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:02:49,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-21 20:02:49,806 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)] === [2024-06-21 20:02:49,806 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:02:49,806 INFO L85 PathProgramCache]: Analyzing trace with hash 955424733, now seen corresponding path program 1 times [2024-06-21 20:02:49,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:02:49,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115277072] [2024-06-21 20:02:49,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:02:49,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:02:49,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:02:50,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:02:50,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:02:50,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115277072] [2024-06-21 20:02:50,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115277072] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:02:50,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:02:50,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 20:02:50,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721587731] [2024-06-21 20:02:50,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:02:50,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 20:02:50,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:02:50,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 20:02:50,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-21 20:02:50,458 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:02:50,458 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 39 transitions, 198 flow. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 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) [2024-06-21 20:02:50,458 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:02:50,458 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:02:50,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:02:50,755 INFO L124 PetriNetUnfolderBase]: 243/433 cut-off events. [2024-06-21 20:02:50,755 INFO L125 PetriNetUnfolderBase]: For 1686/1686 co-relation queries the response was YES. [2024-06-21 20:02:50,757 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1516 conditions, 433 events. 243/433 cut-off events. For 1686/1686 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1545 event pairs, 85 based on Foata normal form. 2/434 useless extension candidates. Maximal degree in co-relation 1493. Up to 383 conditions per place. [2024-06-21 20:02:50,759 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 38 selfloop transitions, 17 changer transitions 0/57 dead transitions. [2024-06-21 20:02:50,759 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 57 transitions, 362 flow [2024-06-21 20:02:50,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 20:02:50,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 20:02:50,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 79 transitions. [2024-06-21 20:02:50,760 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35267857142857145 [2024-06-21 20:02:50,760 INFO L175 Difference]: Start difference. First operand has 51 places, 39 transitions, 198 flow. Second operand 7 states and 79 transitions. [2024-06-21 20:02:50,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 57 transitions, 362 flow [2024-06-21 20:02:50,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 57 transitions, 339 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-21 20:02:50,765 INFO L231 Difference]: Finished difference. Result has 55 places, 46 transitions, 260 flow [2024-06-21 20:02:50,765 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=175, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=260, PETRI_PLACES=55, PETRI_TRANSITIONS=46} [2024-06-21 20:02:50,766 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 24 predicate places. [2024-06-21 20:02:50,766 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 46 transitions, 260 flow [2024-06-21 20:02:50,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 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) [2024-06-21 20:02:50,767 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:02:50,767 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:02:50,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-21 20:02:50,767 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 20:02:50,768 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:02:50,768 INFO L85 PathProgramCache]: Analyzing trace with hash -1528668903, now seen corresponding path program 2 times [2024-06-21 20:02:50,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:02:50,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519364459] [2024-06-21 20:02:50,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:02:50,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:02:50,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:02:51,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:02:51,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:02:51,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519364459] [2024-06-21 20:02:51,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519364459] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:02:51,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:02:51,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 20:02:51,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890719426] [2024-06-21 20:02:51,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:02:51,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 20:02:51,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:02:51,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 20:02:51,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-21 20:02:51,458 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:02:51,458 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 46 transitions, 260 flow. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 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) [2024-06-21 20:02:51,458 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:02:51,459 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:02:51,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:02:51,697 INFO L124 PetriNetUnfolderBase]: 249/443 cut-off events. [2024-06-21 20:02:51,697 INFO L125 PetriNetUnfolderBase]: For 2176/2178 co-relation queries the response was YES. [2024-06-21 20:02:51,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1718 conditions, 443 events. 249/443 cut-off events. For 2176/2178 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1601 event pairs, 81 based on Foata normal form. 2/444 useless extension candidates. Maximal degree in co-relation 1692. Up to 371 conditions per place. [2024-06-21 20:02:51,700 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 38 selfloop transitions, 21 changer transitions 0/61 dead transitions. [2024-06-21 20:02:51,701 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 61 transitions, 455 flow [2024-06-21 20:02:51,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 20:02:51,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 20:02:51,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 80 transitions. [2024-06-21 20:02:51,702 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35714285714285715 [2024-06-21 20:02:51,702 INFO L175 Difference]: Start difference. First operand has 55 places, 46 transitions, 260 flow. Second operand 7 states and 80 transitions. [2024-06-21 20:02:51,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 61 transitions, 455 flow [2024-06-21 20:02:51,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 61 transitions, 439 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-06-21 20:02:51,705 INFO L231 Difference]: Finished difference. Result has 60 places, 50 transitions, 319 flow [2024-06-21 20:02:51,706 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=319, PETRI_PLACES=60, PETRI_TRANSITIONS=50} [2024-06-21 20:02:51,706 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 29 predicate places. [2024-06-21 20:02:51,707 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 50 transitions, 319 flow [2024-06-21 20:02:51,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 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) [2024-06-21 20:02:51,707 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:02:51,707 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:02:51,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-21 20:02:51,708 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)] === [2024-06-21 20:02:51,708 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:02:51,708 INFO L85 PathProgramCache]: Analyzing trace with hash 1162078173, now seen corresponding path program 3 times [2024-06-21 20:02:51,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:02:51,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999319924] [2024-06-21 20:02:51,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:02:51,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:02:51,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:02:52,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:02:52,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:02:52,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999319924] [2024-06-21 20:02:52,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999319924] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:02:52,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:02:52,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 20:02:52,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373820228] [2024-06-21 20:02:52,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:02:52,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 20:02:52,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:02:52,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 20:02:52,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-21 20:02:52,331 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:02:52,331 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 50 transitions, 319 flow. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 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) [2024-06-21 20:02:52,332 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:02:52,332 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:02:52,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:02:52,608 INFO L124 PetriNetUnfolderBase]: 250/445 cut-off events. [2024-06-21 20:02:52,608 INFO L125 PetriNetUnfolderBase]: For 2693/2695 co-relation queries the response was YES. [2024-06-21 20:02:52,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1819 conditions, 445 events. 250/445 cut-off events. For 2693/2695 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1597 event pairs, 86 based on Foata normal form. 2/446 useless extension candidates. Maximal degree in co-relation 1791. Up to 395 conditions per place. [2024-06-21 20:02:52,612 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 42 selfloop transitions, 17 changer transitions 0/61 dead transitions. [2024-06-21 20:02:52,612 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 61 transitions, 480 flow [2024-06-21 20:02:52,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 20:02:52,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 20:02:52,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 77 transitions. [2024-06-21 20:02:52,615 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-21 20:02:52,615 INFO L175 Difference]: Start difference. First operand has 60 places, 50 transitions, 319 flow. Second operand 7 states and 77 transitions. [2024-06-21 20:02:52,615 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 61 transitions, 480 flow [2024-06-21 20:02:52,618 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 61 transitions, 451 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-06-21 20:02:52,620 INFO L231 Difference]: Finished difference. Result has 65 places, 53 transitions, 359 flow [2024-06-21 20:02:52,620 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=292, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=359, PETRI_PLACES=65, PETRI_TRANSITIONS=53} [2024-06-21 20:02:52,621 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 34 predicate places. [2024-06-21 20:02:52,621 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 53 transitions, 359 flow [2024-06-21 20:02:52,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 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) [2024-06-21 20:02:52,621 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:02:52,622 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:02:52,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-21 20:02:52,622 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)] === [2024-06-21 20:02:52,622 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:02:52,623 INFO L85 PathProgramCache]: Analyzing trace with hash 2018256303, now seen corresponding path program 1 times [2024-06-21 20:02:52,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:02:52,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014257134] [2024-06-21 20:02:52,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:02:52,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:02:52,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:02:53,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:02:53,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:02:53,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014257134] [2024-06-21 20:02:53,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014257134] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:02:53,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:02:53,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 20:02:53,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388890555] [2024-06-21 20:02:53,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:02:53,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 20:02:53,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:02:53,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 20:02:53,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-21 20:02:54,038 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:02:54,038 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 53 transitions, 359 flow. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:02:54,039 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:02:54,039 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:02:54,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:02:54,361 INFO L124 PetriNetUnfolderBase]: 248/441 cut-off events. [2024-06-21 20:02:54,362 INFO L125 PetriNetUnfolderBase]: For 2983/2983 co-relation queries the response was YES. [2024-06-21 20:02:54,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1876 conditions, 441 events. 248/441 cut-off events. For 2983/2983 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1569 event pairs, 77 based on Foata normal form. 1/441 useless extension candidates. Maximal degree in co-relation 1845. Up to 421 conditions per place. [2024-06-21 20:02:54,365 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 49 selfloop transitions, 12 changer transitions 0/63 dead transitions. [2024-06-21 20:02:54,365 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 63 transitions, 511 flow [2024-06-21 20:02:54,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 20:02:54,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 20:02:54,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 80 transitions. [2024-06-21 20:02:54,367 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3125 [2024-06-21 20:02:54,367 INFO L175 Difference]: Start difference. First operand has 65 places, 53 transitions, 359 flow. Second operand 8 states and 80 transitions. [2024-06-21 20:02:54,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 63 transitions, 511 flow [2024-06-21 20:02:54,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 63 transitions, 488 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-06-21 20:02:54,372 INFO L231 Difference]: Finished difference. Result has 70 places, 55 transitions, 381 flow [2024-06-21 20:02:54,372 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=336, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=381, PETRI_PLACES=70, PETRI_TRANSITIONS=55} [2024-06-21 20:02:54,373 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 39 predicate places. [2024-06-21 20:02:54,373 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 55 transitions, 381 flow [2024-06-21 20:02:54,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:02:54,374 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:02:54,374 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:02:54,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-21 20:02:54,374 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)] === [2024-06-21 20:02:54,374 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:02:54,375 INFO L85 PathProgramCache]: Analyzing trace with hash -451372027, now seen corresponding path program 1 times [2024-06-21 20:02:54,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:02:54,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931660009] [2024-06-21 20:02:54,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:02:54,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:02:54,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:02:55,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:02:55,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:02:55,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931660009] [2024-06-21 20:02:55,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931660009] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:02:55,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:02:55,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 20:02:55,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629014004] [2024-06-21 20:02:55,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:02:55,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 20:02:55,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:02:55,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 20:02:55,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-21 20:02:55,379 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:02:55,380 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 55 transitions, 381 flow. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:02:55,380 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:02:55,380 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:02:55,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:02:55,739 INFO L124 PetriNetUnfolderBase]: 254/451 cut-off events. [2024-06-21 20:02:55,740 INFO L125 PetriNetUnfolderBase]: For 3486/3486 co-relation queries the response was YES. [2024-06-21 20:02:55,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1970 conditions, 451 events. 254/451 cut-off events. For 3486/3486 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1619 event pairs, 55 based on Foata normal form. 2/452 useless extension candidates. Maximal degree in co-relation 1938. Up to 399 conditions per place. [2024-06-21 20:02:55,744 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 59 selfloop transitions, 11 changer transitions 0/72 dead transitions. [2024-06-21 20:02:55,744 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 72 transitions, 567 flow [2024-06-21 20:02:55,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 20:02:55,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 20:02:55,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 81 transitions. [2024-06-21 20:02:55,745 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36160714285714285 [2024-06-21 20:02:55,745 INFO L175 Difference]: Start difference. First operand has 70 places, 55 transitions, 381 flow. Second operand 7 states and 81 transitions. [2024-06-21 20:02:55,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 72 transitions, 567 flow [2024-06-21 20:02:55,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 72 transitions, 538 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-21 20:02:55,751 INFO L231 Difference]: Finished difference. Result has 71 places, 57 transitions, 393 flow [2024-06-21 20:02:55,751 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=352, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=393, PETRI_PLACES=71, PETRI_TRANSITIONS=57} [2024-06-21 20:02:55,752 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 40 predicate places. [2024-06-21 20:02:55,752 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 57 transitions, 393 flow [2024-06-21 20:02:55,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:02:55,753 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:02:55,753 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:02:55,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-21 20:02:55,753 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)] === [2024-06-21 20:02:55,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:02:55,753 INFO L85 PathProgramCache]: Analyzing trace with hash -451251871, now seen corresponding path program 1 times [2024-06-21 20:02:55,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:02:55,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140807149] [2024-06-21 20:02:55,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:02:55,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:02:55,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:02:56,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:02:56,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:02:56,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140807149] [2024-06-21 20:02:56,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140807149] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:02:56,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:02:56,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 20:02:56,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077365550] [2024-06-21 20:02:56,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:02:56,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 20:02:56,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:02:56,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 20:02:56,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-21 20:02:56,745 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:02:56,745 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 57 transitions, 393 flow. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:02:56,745 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:02:56,746 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:02:56,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:02:57,051 INFO L124 PetriNetUnfolderBase]: 257/456 cut-off events. [2024-06-21 20:02:57,051 INFO L125 PetriNetUnfolderBase]: For 4000/4000 co-relation queries the response was YES. [2024-06-21 20:02:57,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2078 conditions, 456 events. 257/456 cut-off events. For 4000/4000 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1656 event pairs, 75 based on Foata normal form. 1/456 useless extension candidates. Maximal degree in co-relation 2045. Up to 404 conditions per place. [2024-06-21 20:02:57,055 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 50 selfloop transitions, 18 changer transitions 0/70 dead transitions. [2024-06-21 20:02:57,056 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 70 transitions, 577 flow [2024-06-21 20:02:57,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 20:02:57,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 20:02:57,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 80 transitions. [2024-06-21 20:02:57,057 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35714285714285715 [2024-06-21 20:02:57,057 INFO L175 Difference]: Start difference. First operand has 71 places, 57 transitions, 393 flow. Second operand 7 states and 80 transitions. [2024-06-21 20:02:57,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 70 transitions, 577 flow [2024-06-21 20:02:57,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 70 transitions, 552 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-21 20:02:57,063 INFO L231 Difference]: Finished difference. Result has 73 places, 59 transitions, 434 flow [2024-06-21 20:02:57,064 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=368, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=434, PETRI_PLACES=73, PETRI_TRANSITIONS=59} [2024-06-21 20:02:57,064 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 42 predicate places. [2024-06-21 20:02:57,064 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 59 transitions, 434 flow [2024-06-21 20:02:57,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:02:57,065 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:02:57,065 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:02:57,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-21 20:02:57,065 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)] === [2024-06-21 20:02:57,065 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:02:57,066 INFO L85 PathProgramCache]: Analyzing trace with hash -446783407, now seen corresponding path program 2 times [2024-06-21 20:02:57,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:02:57,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429410969] [2024-06-21 20:02:57,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:02:57,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:02:57,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:02:57,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:02:57,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:02:57,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429410969] [2024-06-21 20:02:57,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429410969] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:02:57,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:02:57,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 20:02:57,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988034389] [2024-06-21 20:02:57,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:02:57,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 20:02:57,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:02:57,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 20:02:57,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-21 20:02:58,047 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:02:58,047 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 59 transitions, 434 flow. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:02:58,048 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:02:58,048 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:02:58,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:02:58,463 INFO L124 PetriNetUnfolderBase]: 263/466 cut-off events. [2024-06-21 20:02:58,464 INFO L125 PetriNetUnfolderBase]: For 4714/4714 co-relation queries the response was YES. [2024-06-21 20:02:58,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2176 conditions, 466 events. 263/466 cut-off events. For 4714/4714 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1722 event pairs, 55 based on Foata normal form. 2/467 useless extension candidates. Maximal degree in co-relation 2142. Up to 382 conditions per place. [2024-06-21 20:02:58,468 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 55 selfloop transitions, 20 changer transitions 0/77 dead transitions. [2024-06-21 20:02:58,468 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 77 transitions, 672 flow [2024-06-21 20:02:58,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 20:02:58,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 20:02:58,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 85 transitions. [2024-06-21 20:02:58,470 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3794642857142857 [2024-06-21 20:02:58,470 INFO L175 Difference]: Start difference. First operand has 73 places, 59 transitions, 434 flow. Second operand 7 states and 85 transitions. [2024-06-21 20:02:58,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 77 transitions, 672 flow [2024-06-21 20:02:58,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 77 transitions, 636 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-21 20:02:58,481 INFO L231 Difference]: Finished difference. Result has 75 places, 63 transitions, 475 flow [2024-06-21 20:02:58,481 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=398, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=475, PETRI_PLACES=75, PETRI_TRANSITIONS=63} [2024-06-21 20:02:58,482 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 44 predicate places. [2024-06-21 20:02:58,483 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 63 transitions, 475 flow [2024-06-21 20:02:58,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:02:58,483 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:02:58,483 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:02:58,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-21 20:02:58,483 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)] === [2024-06-21 20:02:58,484 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:02:58,484 INFO L85 PathProgramCache]: Analyzing trace with hash 698610371, now seen corresponding path program 1 times [2024-06-21 20:02:58,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:02:58,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592054107] [2024-06-21 20:02:58,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:02:58,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:02:58,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:02:59,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:02:59,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:02:59,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592054107] [2024-06-21 20:02:59,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592054107] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:02:59,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:02:59,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 20:02:59,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457258838] [2024-06-21 20:02:59,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:02:59,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 20:02:59,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:02:59,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 20:02:59,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-21 20:02:59,337 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:02:59,338 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 63 transitions, 475 flow. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:02:59,338 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:02:59,338 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:02:59,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:02:59,634 INFO L124 PetriNetUnfolderBase]: 269/477 cut-off events. [2024-06-21 20:02:59,634 INFO L125 PetriNetUnfolderBase]: For 5470/5470 co-relation queries the response was YES. [2024-06-21 20:02:59,637 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2295 conditions, 477 events. 269/477 cut-off events. For 5470/5470 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1763 event pairs, 80 based on Foata normal form. 2/478 useless extension candidates. Maximal degree in co-relation 2260. Up to 419 conditions per place. [2024-06-21 20:02:59,639 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 56 selfloop transitions, 20 changer transitions 0/78 dead transitions. [2024-06-21 20:02:59,640 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 78 transitions, 677 flow [2024-06-21 20:02:59,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 20:02:59,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 20:02:59,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 88 transitions. [2024-06-21 20:02:59,641 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-21 20:02:59,641 INFO L175 Difference]: Start difference. First operand has 75 places, 63 transitions, 475 flow. Second operand 8 states and 88 transitions. [2024-06-21 20:02:59,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 78 transitions, 677 flow [2024-06-21 20:02:59,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 78 transitions, 653 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-06-21 20:02:59,650 INFO L231 Difference]: Finished difference. Result has 80 places, 65 transitions, 512 flow [2024-06-21 20:02:59,650 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=451, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=512, PETRI_PLACES=80, PETRI_TRANSITIONS=65} [2024-06-21 20:02:59,650 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 49 predicate places. [2024-06-21 20:02:59,651 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 65 transitions, 512 flow [2024-06-21 20:02:59,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:02:59,651 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:02:59,652 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:02:59,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-21 20:02:59,654 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)] === [2024-06-21 20:02:59,654 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:02:59,654 INFO L85 PathProgramCache]: Analyzing trace with hash -144094871, now seen corresponding path program 2 times [2024-06-21 20:02:59,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:02:59,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752739711] [2024-06-21 20:02:59,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:02:59,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:02:59,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:03:00,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:03:00,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:03:00,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752739711] [2024-06-21 20:03:00,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752739711] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:03:00,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:03:00,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 20:03:00,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252028785] [2024-06-21 20:03:00,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:03:00,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 20:03:00,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:03:00,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 20:03:00,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-21 20:03:00,525 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:03:00,525 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 65 transitions, 512 flow. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:03:00,525 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:03:00,525 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:03:00,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:03:00,873 INFO L124 PetriNetUnfolderBase]: 285/503 cut-off events. [2024-06-21 20:03:00,873 INFO L125 PetriNetUnfolderBase]: For 6468/6470 co-relation queries the response was YES. [2024-06-21 20:03:00,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2537 conditions, 503 events. 285/503 cut-off events. For 6468/6470 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1872 event pairs, 80 based on Foata normal form. 2/504 useless extension candidates. Maximal degree in co-relation 2500. Up to 387 conditions per place. [2024-06-21 20:03:00,878 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 52 selfloop transitions, 30 changer transitions 0/84 dead transitions. [2024-06-21 20:03:00,878 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 84 transitions, 828 flow [2024-06-21 20:03:00,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 20:03:00,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 20:03:00,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 92 transitions. [2024-06-21 20:03:00,879 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.359375 [2024-06-21 20:03:00,880 INFO L175 Difference]: Start difference. First operand has 80 places, 65 transitions, 512 flow. Second operand 8 states and 92 transitions. [2024-06-21 20:03:00,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 84 transitions, 828 flow [2024-06-21 20:03:00,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 84 transitions, 783 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-21 20:03:00,890 INFO L231 Difference]: Finished difference. Result has 82 places, 71 transitions, 584 flow [2024-06-21 20:03:00,891 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=467, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=584, PETRI_PLACES=82, PETRI_TRANSITIONS=71} [2024-06-21 20:03:00,891 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 51 predicate places. [2024-06-21 20:03:00,892 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 71 transitions, 584 flow [2024-06-21 20:03:00,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:03:00,892 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:03:00,893 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:03:00,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-21 20:03:00,893 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)] === [2024-06-21 20:03:00,893 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:03:00,893 INFO L85 PathProgramCache]: Analyzing trace with hash -1867144911, now seen corresponding path program 3 times [2024-06-21 20:03:00,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:03:00,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277327856] [2024-06-21 20:03:00,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:03:00,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:03:00,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:03:01,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:03:01,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:03:01,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277327856] [2024-06-21 20:03:01,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277327856] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:03:01,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:03:01,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 20:03:01,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265684900] [2024-06-21 20:03:01,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:03:01,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 20:03:01,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:03:01,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 20:03:01,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-21 20:03:01,828 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:03:01,829 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 71 transitions, 584 flow. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:03:01,829 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:03:01,829 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:03:01,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:03:02,177 INFO L124 PetriNetUnfolderBase]: 286/506 cut-off events. [2024-06-21 20:03:02,177 INFO L125 PetriNetUnfolderBase]: For 7190/7190 co-relation queries the response was YES. [2024-06-21 20:03:02,179 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2632 conditions, 506 events. 286/506 cut-off events. For 7190/7190 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1878 event pairs, 80 based on Foata normal form. 2/507 useless extension candidates. Maximal degree in co-relation 2594. Up to 447 conditions per place. [2024-06-21 20:03:02,182 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 63 selfloop transitions, 21 changer transitions 0/86 dead transitions. [2024-06-21 20:03:02,182 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 86 transitions, 828 flow [2024-06-21 20:03:02,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 20:03:02,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 20:03:02,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 94 transitions. [2024-06-21 20:03:02,184 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3263888888888889 [2024-06-21 20:03:02,184 INFO L175 Difference]: Start difference. First operand has 82 places, 71 transitions, 584 flow. Second operand 9 states and 94 transitions. [2024-06-21 20:03:02,184 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 86 transitions, 828 flow [2024-06-21 20:03:02,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 86 transitions, 792 flow, removed 9 selfloop flow, removed 3 redundant places. [2024-06-21 20:03:02,194 INFO L231 Difference]: Finished difference. Result has 89 places, 75 transitions, 635 flow [2024-06-21 20:03:02,194 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=551, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=635, PETRI_PLACES=89, PETRI_TRANSITIONS=75} [2024-06-21 20:03:02,194 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 58 predicate places. [2024-06-21 20:03:02,194 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 75 transitions, 635 flow [2024-06-21 20:03:02,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:03:02,195 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:03:02,195 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:03:02,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-21 20:03:02,195 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)] === [2024-06-21 20:03:02,196 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:03:02,196 INFO L85 PathProgramCache]: Analyzing trace with hash 1673256741, now seen corresponding path program 4 times [2024-06-21 20:03:02,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:03:02,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275495556] [2024-06-21 20:03:02,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:03:02,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:03:02,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:03:03,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:03:03,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:03:03,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275495556] [2024-06-21 20:03:03,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275495556] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:03:03,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:03:03,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 20:03:03,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801302903] [2024-06-21 20:03:03,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:03:03,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 20:03:03,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:03:03,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 20:03:03,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-21 20:03:03,113 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:03:03,114 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 75 transitions, 635 flow. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:03:03,114 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:03:03,114 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:03:03,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:03:03,364 INFO L124 PetriNetUnfolderBase]: 282/498 cut-off events. [2024-06-21 20:03:03,365 INFO L125 PetriNetUnfolderBase]: For 7543/7543 co-relation queries the response was YES. [2024-06-21 20:03:03,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2651 conditions, 498 events. 282/498 cut-off events. For 7543/7543 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1854 event pairs, 79 based on Foata normal form. 2/499 useless extension candidates. Maximal degree in co-relation 2610. Up to 475 conditions per place. [2024-06-21 20:03:03,370 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 70 selfloop transitions, 12 changer transitions 0/84 dead transitions. [2024-06-21 20:03:03,371 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 84 transitions, 826 flow [2024-06-21 20:03:03,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 20:03:03,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 20:03:03,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 81 transitions. [2024-06-21 20:03:03,372 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31640625 [2024-06-21 20:03:03,372 INFO L175 Difference]: Start difference. First operand has 89 places, 75 transitions, 635 flow. Second operand 8 states and 81 transitions. [2024-06-21 20:03:03,372 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 84 transitions, 826 flow [2024-06-21 20:03:03,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 84 transitions, 777 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-06-21 20:03:03,383 INFO L231 Difference]: Finished difference. Result has 92 places, 75 transitions, 615 flow [2024-06-21 20:03:03,383 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=586, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=615, PETRI_PLACES=92, PETRI_TRANSITIONS=75} [2024-06-21 20:03:03,384 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 61 predicate places. [2024-06-21 20:03:03,384 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 75 transitions, 615 flow [2024-06-21 20:03:03,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:03:03,384 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:03:03,385 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:03:03,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-21 20:03:03,385 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)] === [2024-06-21 20:03:03,385 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:03:03,385 INFO L85 PathProgramCache]: Analyzing trace with hash -1867151669, now seen corresponding path program 2 times [2024-06-21 20:03:03,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:03:03,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197684745] [2024-06-21 20:03:03,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:03:03,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:03:03,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:03:04,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:03:04,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:03:04,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197684745] [2024-06-21 20:03:04,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197684745] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:03:04,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:03:04,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 20:03:04,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210861039] [2024-06-21 20:03:04,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:03:04,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 20:03:04,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:03:04,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 20:03:04,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-21 20:03:04,411 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:03:04,412 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 75 transitions, 615 flow. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:03:04,412 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:03:04,412 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:03:04,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:03:04,738 INFO L124 PetriNetUnfolderBase]: 280/496 cut-off events. [2024-06-21 20:03:04,739 INFO L125 PetriNetUnfolderBase]: For 8005/8007 co-relation queries the response was YES. [2024-06-21 20:03:04,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2628 conditions, 496 events. 280/496 cut-off events. For 8005/8007 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1847 event pairs, 85 based on Foata normal form. 1/496 useless extension candidates. Maximal degree in co-relation 2585. Up to 443 conditions per place. [2024-06-21 20:03:04,744 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 61 selfloop transitions, 19 changer transitions 0/82 dead transitions. [2024-06-21 20:03:04,744 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 82 transitions, 795 flow [2024-06-21 20:03:04,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 20:03:04,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 20:03:04,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 78 transitions. [2024-06-21 20:03:04,745 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3482142857142857 [2024-06-21 20:03:04,745 INFO L175 Difference]: Start difference. First operand has 92 places, 75 transitions, 615 flow. Second operand 7 states and 78 transitions. [2024-06-21 20:03:04,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 82 transitions, 795 flow [2024-06-21 20:03:04,754 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 82 transitions, 766 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-21 20:03:04,755 INFO L231 Difference]: Finished difference. Result has 92 places, 75 transitions, 632 flow [2024-06-21 20:03:04,756 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=586, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=632, PETRI_PLACES=92, PETRI_TRANSITIONS=75} [2024-06-21 20:03:04,756 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 61 predicate places. [2024-06-21 20:03:04,756 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 75 transitions, 632 flow [2024-06-21 20:03:04,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:03:04,757 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:03:04,757 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:03:04,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-21 20:03:04,757 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)] === [2024-06-21 20:03:04,758 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:03:04,758 INFO L85 PathProgramCache]: Analyzing trace with hash -1867151855, now seen corresponding path program 3 times [2024-06-21 20:03:04,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:03:04,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502270954] [2024-06-21 20:03:04,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:03:04,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:03:04,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:03:05,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:03:05,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:03:05,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502270954] [2024-06-21 20:03:05,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502270954] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:03:05,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:03:05,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 20:03:05,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133732757] [2024-06-21 20:03:05,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:03:05,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 20:03:05,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:03:05,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 20:03:05,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-06-21 20:03:05,820 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:03:05,821 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 75 transitions, 632 flow. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:03:05,821 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:03:05,821 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:03:05,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:03:06,210 INFO L124 PetriNetUnfolderBase]: 276/490 cut-off events. [2024-06-21 20:03:06,210 INFO L125 PetriNetUnfolderBase]: For 8614/8616 co-relation queries the response was YES. [2024-06-21 20:03:06,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2624 conditions, 490 events. 276/490 cut-off events. For 8614/8616 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1815 event pairs, 72 based on Foata normal form. 2/491 useless extension candidates. Maximal degree in co-relation 2580. Up to 408 conditions per place. [2024-06-21 20:03:06,215 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 63 selfloop transitions, 20 changer transitions 0/85 dead transitions. [2024-06-21 20:03:06,215 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 85 transitions, 822 flow [2024-06-21 20:03:06,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 20:03:06,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 20:03:06,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 82 transitions. [2024-06-21 20:03:06,222 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36607142857142855 [2024-06-21 20:03:06,222 INFO L175 Difference]: Start difference. First operand has 92 places, 75 transitions, 632 flow. Second operand 7 states and 82 transitions. [2024-06-21 20:03:06,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 85 transitions, 822 flow [2024-06-21 20:03:06,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 85 transitions, 757 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-21 20:03:06,232 INFO L231 Difference]: Finished difference. Result has 93 places, 75 transitions, 612 flow [2024-06-21 20:03:06,233 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=567, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=612, PETRI_PLACES=93, PETRI_TRANSITIONS=75} [2024-06-21 20:03:06,237 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 62 predicate places. [2024-06-21 20:03:06,237 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 75 transitions, 612 flow [2024-06-21 20:03:06,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:03:06,237 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:03:06,238 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:03:06,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-21 20:03:06,238 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)] === [2024-06-21 20:03:06,238 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:03:06,238 INFO L85 PathProgramCache]: Analyzing trace with hash 1673267653, now seen corresponding path program 1 times [2024-06-21 20:03:06,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:03:06,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420903410] [2024-06-21 20:03:06,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:03:06,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:03:06,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:03:07,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:03:07,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:03:07,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420903410] [2024-06-21 20:03:07,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420903410] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:03:07,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:03:07,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 20:03:07,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686017085] [2024-06-21 20:03:07,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:03:07,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 20:03:07,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:03:07,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 20:03:07,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-21 20:03:07,852 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:03:07,852 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 75 transitions, 612 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:03:07,852 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:03:07,853 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:03:07,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:03:08,164 INFO L124 PetriNetUnfolderBase]: 274/486 cut-off events. [2024-06-21 20:03:08,164 INFO L125 PetriNetUnfolderBase]: For 8108/8108 co-relation queries the response was YES. [2024-06-21 20:03:08,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2583 conditions, 486 events. 274/486 cut-off events. For 8108/8108 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1794 event pairs, 77 based on Foata normal form. 1/486 useless extension candidates. Maximal degree in co-relation 2538. Up to 463 conditions per place. [2024-06-21 20:03:08,169 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 70 selfloop transitions, 14 changer transitions 0/86 dead transitions. [2024-06-21 20:03:08,169 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 86 transitions, 817 flow [2024-06-21 20:03:08,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 20:03:08,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 20:03:08,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 88 transitions. [2024-06-21 20:03:08,170 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3055555555555556 [2024-06-21 20:03:08,170 INFO L175 Difference]: Start difference. First operand has 93 places, 75 transitions, 612 flow. Second operand 9 states and 88 transitions. [2024-06-21 20:03:08,171 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 86 transitions, 817 flow [2024-06-21 20:03:08,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 86 transitions, 766 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-21 20:03:08,182 INFO L231 Difference]: Finished difference. Result has 96 places, 77 transitions, 612 flow [2024-06-21 20:03:08,182 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=561, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=612, PETRI_PLACES=96, PETRI_TRANSITIONS=77} [2024-06-21 20:03:08,183 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 65 predicate places. [2024-06-21 20:03:08,183 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 77 transitions, 612 flow [2024-06-21 20:03:08,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:03:08,183 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:03:08,183 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:03:08,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-21 20:03:08,184 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)] === [2024-06-21 20:03:08,184 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:03:08,184 INFO L85 PathProgramCache]: Analyzing trace with hash -1107630114, now seen corresponding path program 1 times [2024-06-21 20:03:08,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:03:08,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119120733] [2024-06-21 20:03:08,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:03:08,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:03:08,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:03:09,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:03:09,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:03:09,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119120733] [2024-06-21 20:03:09,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119120733] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:03:09,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:03:09,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 20:03:09,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21130372] [2024-06-21 20:03:09,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:03:09,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 20:03:09,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:03:09,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 20:03:09,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-21 20:03:09,182 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:03:09,182 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 77 transitions, 612 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:03:09,182 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:03:09,183 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:03:09,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:03:09,502 INFO L124 PetriNetUnfolderBase]: 283/501 cut-off events. [2024-06-21 20:03:09,503 INFO L125 PetriNetUnfolderBase]: For 8842/8842 co-relation queries the response was YES. [2024-06-21 20:03:09,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2674 conditions, 501 events. 283/501 cut-off events. For 8842/8842 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1874 event pairs, 55 based on Foata normal form. 2/502 useless extension candidates. Maximal degree in co-relation 2628. Up to 443 conditions per place. [2024-06-21 20:03:09,508 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 80 selfloop transitions, 15 changer transitions 0/97 dead transitions. [2024-06-21 20:03:09,508 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 97 transitions, 871 flow [2024-06-21 20:03:09,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 20:03:09,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 20:03:09,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 90 transitions. [2024-06-21 20:03:09,509 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3515625 [2024-06-21 20:03:09,509 INFO L175 Difference]: Start difference. First operand has 96 places, 77 transitions, 612 flow. Second operand 8 states and 90 transitions. [2024-06-21 20:03:09,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 97 transitions, 871 flow [2024-06-21 20:03:09,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 97 transitions, 836 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-21 20:03:09,521 INFO L231 Difference]: Finished difference. Result has 98 places, 82 transitions, 654 flow [2024-06-21 20:03:09,521 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=577, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=654, PETRI_PLACES=98, PETRI_TRANSITIONS=82} [2024-06-21 20:03:09,522 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 67 predicate places. [2024-06-21 20:03:09,522 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 82 transitions, 654 flow [2024-06-21 20:03:09,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:03:09,522 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:03:09,522 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:03:09,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-21 20:03:09,523 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)] === [2024-06-21 20:03:09,523 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:03:09,523 INFO L85 PathProgramCache]: Analyzing trace with hash 37985642, now seen corresponding path program 2 times [2024-06-21 20:03:09,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:03:09,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453970639] [2024-06-21 20:03:09,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:03:09,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:03:09,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:03:10,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:03:10,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:03:10,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453970639] [2024-06-21 20:03:10,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453970639] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:03:10,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:03:10,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 20:03:10,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513087738] [2024-06-21 20:03:10,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:03:10,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 20:03:10,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:03:10,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 20:03:10,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-21 20:03:10,553 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:03:10,554 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 82 transitions, 654 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:03:10,554 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:03:10,554 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:03:10,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:03:10,971 INFO L124 PetriNetUnfolderBase]: 351/617 cut-off events. [2024-06-21 20:03:10,971 INFO L125 PetriNetUnfolderBase]: For 10588/10588 co-relation queries the response was YES. [2024-06-21 20:03:10,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3380 conditions, 617 events. 351/617 cut-off events. For 10588/10588 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2511 event pairs, 74 based on Foata normal form. 2/618 useless extension candidates. Maximal degree in co-relation 3332. Up to 455 conditions per place. [2024-06-21 20:03:10,978 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 84 selfloop transitions, 43 changer transitions 0/129 dead transitions. [2024-06-21 20:03:10,979 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 129 transitions, 1280 flow [2024-06-21 20:03:10,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 20:03:10,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 20:03:10,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 108 transitions. [2024-06-21 20:03:10,986 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-21 20:03:10,987 INFO L175 Difference]: Start difference. First operand has 98 places, 82 transitions, 654 flow. Second operand 9 states and 108 transitions. [2024-06-21 20:03:10,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 129 transitions, 1280 flow [2024-06-21 20:03:11,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 129 transitions, 1216 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-06-21 20:03:11,007 INFO L231 Difference]: Finished difference. Result has 106 places, 107 transitions, 982 flow [2024-06-21 20:03:11,008 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=619, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=982, PETRI_PLACES=106, PETRI_TRANSITIONS=107} [2024-06-21 20:03:11,009 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 75 predicate places. [2024-06-21 20:03:11,009 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 107 transitions, 982 flow [2024-06-21 20:03:11,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:03:11,009 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:03:11,010 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:03:11,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-21 20:03:11,010 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)] === [2024-06-21 20:03:11,011 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:03:11,011 INFO L85 PathProgramCache]: Analyzing trace with hash -1050533578, now seen corresponding path program 3 times [2024-06-21 20:03:11,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:03:11,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125047829] [2024-06-21 20:03:11,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:03:11,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:03:11,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:03:11,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:03:11,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:03:11,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125047829] [2024-06-21 20:03:11,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125047829] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:03:11,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:03:11,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 20:03:11,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883471613] [2024-06-21 20:03:11,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:03:11,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 20:03:11,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:03:11,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 20:03:11,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-21 20:03:11,910 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:03:11,910 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 107 transitions, 982 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:03:11,910 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:03:11,911 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:03:11,911 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:03:12,207 INFO L124 PetriNetUnfolderBase]: 367/643 cut-off events. [2024-06-21 20:03:12,207 INFO L125 PetriNetUnfolderBase]: For 12428/12428 co-relation queries the response was YES. [2024-06-21 20:03:12,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3771 conditions, 643 events. 367/643 cut-off events. For 12428/12428 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2634 event pairs, 63 based on Foata normal form. 2/644 useless extension candidates. Maximal degree in co-relation 3718. Up to 481 conditions per place. [2024-06-21 20:03:12,213 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 89 selfloop transitions, 44 changer transitions 0/135 dead transitions. [2024-06-21 20:03:12,213 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 135 transitions, 1443 flow [2024-06-21 20:03:12,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 20:03:12,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 20:03:12,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 108 transitions. [2024-06-21 20:03:12,214 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-21 20:03:12,215 INFO L175 Difference]: Start difference. First operand has 106 places, 107 transitions, 982 flow. Second operand 9 states and 108 transitions. [2024-06-21 20:03:12,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 135 transitions, 1443 flow [2024-06-21 20:03:12,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 135 transitions, 1421 flow, removed 10 selfloop flow, removed 1 redundant places. [2024-06-21 20:03:12,234 INFO L231 Difference]: Finished difference. Result has 115 places, 112 transitions, 1136 flow [2024-06-21 20:03:12,234 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=960, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1136, PETRI_PLACES=115, PETRI_TRANSITIONS=112} [2024-06-21 20:03:12,235 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 84 predicate places. [2024-06-21 20:03:12,235 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 112 transitions, 1136 flow [2024-06-21 20:03:12,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:03:12,235 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:03:12,235 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:03:12,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-21 20:03:12,236 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)] === [2024-06-21 20:03:12,236 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:03:12,236 INFO L85 PathProgramCache]: Analyzing trace with hash 37985859, now seen corresponding path program 1 times [2024-06-21 20:03:12,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:03:12,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803605461] [2024-06-21 20:03:12,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:03:12,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:03:12,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:03:13,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:03:13,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:03:13,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803605461] [2024-06-21 20:03:13,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803605461] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:03:13,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:03:13,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 20:03:13,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65933376] [2024-06-21 20:03:13,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:03:13,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 20:03:13,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:03:13,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 20:03:13,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-21 20:03:13,295 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:03:13,295 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 112 transitions, 1136 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:03:13,295 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:03:13,295 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:03:13,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:03:13,608 INFO L124 PetriNetUnfolderBase]: 370/648 cut-off events. [2024-06-21 20:03:13,608 INFO L125 PetriNetUnfolderBase]: For 13659/13659 co-relation queries the response was YES. [2024-06-21 20:03:13,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4001 conditions, 648 events. 370/648 cut-off events. For 13659/13659 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2669 event pairs, 85 based on Foata normal form. 1/648 useless extension candidates. Maximal degree in co-relation 3944. Up to 553 conditions per place. [2024-06-21 20:03:13,614 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 91 selfloop transitions, 32 changer transitions 0/125 dead transitions. [2024-06-21 20:03:13,614 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 125 transitions, 1438 flow [2024-06-21 20:03:13,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 20:03:13,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 20:03:13,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 89 transitions. [2024-06-21 20:03:13,615 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34765625 [2024-06-21 20:03:13,615 INFO L175 Difference]: Start difference. First operand has 115 places, 112 transitions, 1136 flow. Second operand 8 states and 89 transitions. [2024-06-21 20:03:13,615 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 125 transitions, 1438 flow [2024-06-21 20:03:13,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 125 transitions, 1364 flow, removed 22 selfloop flow, removed 4 redundant places. [2024-06-21 20:03:13,643 INFO L231 Difference]: Finished difference. Result has 119 places, 114 transitions, 1162 flow [2024-06-21 20:03:13,643 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1062, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1162, PETRI_PLACES=119, PETRI_TRANSITIONS=114} [2024-06-21 20:03:13,644 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 88 predicate places. [2024-06-21 20:03:13,644 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 114 transitions, 1162 flow [2024-06-21 20:03:13,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:03:13,645 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:03:13,645 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:03:13,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-21 20:03:13,645 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)] === [2024-06-21 20:03:13,646 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:03:13,646 INFO L85 PathProgramCache]: Analyzing trace with hash -527495260, now seen corresponding path program 4 times [2024-06-21 20:03:13,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:03:13,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900055518] [2024-06-21 20:03:13,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:03:13,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:03:13,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:03:14,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:03:14,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:03:14,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900055518] [2024-06-21 20:03:14,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900055518] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:03:14,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:03:14,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 20:03:14,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054693856] [2024-06-21 20:03:14,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:03:14,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 20:03:14,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:03:14,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 20:03:14,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-21 20:03:14,456 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:03:14,456 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 114 transitions, 1162 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:03:14,456 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:03:14,456 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:03:14,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:03:14,864 INFO L124 PetriNetUnfolderBase]: 372/652 cut-off events. [2024-06-21 20:03:14,864 INFO L125 PetriNetUnfolderBase]: For 14780/14780 co-relation queries the response was YES. [2024-06-21 20:03:14,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4001 conditions, 652 events. 372/652 cut-off events. For 14780/14780 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2680 event pairs, 65 based on Foata normal form. 4/655 useless extension candidates. Maximal degree in co-relation 3944. Up to 512 conditions per place. [2024-06-21 20:03:14,872 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 88 selfloop transitions, 40 changer transitions 0/130 dead transitions. [2024-06-21 20:03:14,872 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 130 transitions, 1496 flow [2024-06-21 20:03:14,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 20:03:14,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 20:03:14,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 93 transitions. [2024-06-21 20:03:14,873 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36328125 [2024-06-21 20:03:14,874 INFO L175 Difference]: Start difference. First operand has 119 places, 114 transitions, 1162 flow. Second operand 8 states and 93 transitions. [2024-06-21 20:03:14,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 130 transitions, 1496 flow [2024-06-21 20:03:14,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 130 transitions, 1430 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-21 20:03:14,897 INFO L231 Difference]: Finished difference. Result has 121 places, 118 transitions, 1236 flow [2024-06-21 20:03:14,897 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1096, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1236, PETRI_PLACES=121, PETRI_TRANSITIONS=118} [2024-06-21 20:03:14,898 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 90 predicate places. [2024-06-21 20:03:14,898 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 118 transitions, 1236 flow [2024-06-21 20:03:14,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:03:14,898 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:03:14,899 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:03:14,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-21 20:03:14,899 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)] === [2024-06-21 20:03:14,899 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:03:14,899 INFO L85 PathProgramCache]: Analyzing trace with hash 182085918, now seen corresponding path program 1 times [2024-06-21 20:03:14,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:03:14,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503754191] [2024-06-21 20:03:14,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:03:14,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:03:14,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:03:16,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:03:16,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:03:16,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503754191] [2024-06-21 20:03:16,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503754191] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:03:16,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:03:16,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 20:03:16,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422914984] [2024-06-21 20:03:16,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:03:16,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 20:03:16,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:03:16,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 20:03:16,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-21 20:03:16,251 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:03:16,251 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 118 transitions, 1236 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:03:16,251 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:03:16,252 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:03:16,252 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:03:16,654 INFO L124 PetriNetUnfolderBase]: 378/662 cut-off events. [2024-06-21 20:03:16,654 INFO L125 PetriNetUnfolderBase]: For 15429/15429 co-relation queries the response was YES. [2024-06-21 20:03:16,657 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4131 conditions, 662 events. 378/662 cut-off events. For 15429/15429 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2743 event pairs, 85 based on Foata normal form. 2/663 useless extension candidates. Maximal degree in co-relation 4073. Up to 570 conditions per place. [2024-06-21 20:03:16,660 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 103 selfloop transitions, 29 changer transitions 0/134 dead transitions. [2024-06-21 20:03:16,660 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 134 transitions, 1570 flow [2024-06-21 20:03:16,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 20:03:16,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 20:03:16,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-21 20:03:16,661 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3368055555555556 [2024-06-21 20:03:16,661 INFO L175 Difference]: Start difference. First operand has 121 places, 118 transitions, 1236 flow. Second operand 9 states and 97 transitions. [2024-06-21 20:03:16,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 134 transitions, 1570 flow [2024-06-21 20:03:16,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 134 transitions, 1468 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-21 20:03:16,686 INFO L231 Difference]: Finished difference. Result has 124 places, 120 transitions, 1217 flow [2024-06-21 20:03:16,686 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1134, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1217, PETRI_PLACES=124, PETRI_TRANSITIONS=120} [2024-06-21 20:03:16,687 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 93 predicate places. [2024-06-21 20:03:16,687 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 120 transitions, 1217 flow [2024-06-21 20:03:16,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:03:16,687 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:03:16,687 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:03:16,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-21 20:03:16,688 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)] === [2024-06-21 20:03:16,688 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:03:16,688 INFO L85 PathProgramCache]: Analyzing trace with hash -1289734368, now seen corresponding path program 5 times [2024-06-21 20:03:16,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:03:16,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404452939] [2024-06-21 20:03:16,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:03:16,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:03:16,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:03:17,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:03:17,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:03:17,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404452939] [2024-06-21 20:03:17,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404452939] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:03:17,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:03:17,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 20:03:17,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385597374] [2024-06-21 20:03:17,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:03:17,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 20:03:17,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:03:17,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 20:03:17,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-21 20:03:17,497 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:03:17,497 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 120 transitions, 1217 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:03:17,497 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:03:17,497 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:03:17,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:03:17,833 INFO L124 PetriNetUnfolderBase]: 384/673 cut-off events. [2024-06-21 20:03:17,834 INFO L125 PetriNetUnfolderBase]: For 16483/16485 co-relation queries the response was YES. [2024-06-21 20:03:17,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4208 conditions, 673 events. 384/673 cut-off events. For 16483/16485 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2806 event pairs, 76 based on Foata normal form. 2/674 useless extension candidates. Maximal degree in co-relation 4149. Up to 536 conditions per place. [2024-06-21 20:03:17,839 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 92 selfloop transitions, 39 changer transitions 0/133 dead transitions. [2024-06-21 20:03:17,839 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 133 transitions, 1541 flow [2024-06-21 20:03:17,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 20:03:17,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 20:03:17,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 90 transitions. [2024-06-21 20:03:17,842 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3515625 [2024-06-21 20:03:17,842 INFO L175 Difference]: Start difference. First operand has 124 places, 120 transitions, 1217 flow. Second operand 8 states and 90 transitions. [2024-06-21 20:03:17,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 133 transitions, 1541 flow [2024-06-21 20:03:17,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 133 transitions, 1474 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-21 20:03:17,862 INFO L231 Difference]: Finished difference. Result has 125 places, 122 transitions, 1265 flow [2024-06-21 20:03:17,862 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1150, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1265, PETRI_PLACES=125, PETRI_TRANSITIONS=122} [2024-06-21 20:03:17,863 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 94 predicate places. [2024-06-21 20:03:17,863 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 122 transitions, 1265 flow [2024-06-21 20:03:17,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:03:17,863 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:03:17,863 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:03:17,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-21 20:03:17,864 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)] === [2024-06-21 20:03:17,864 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:03:17,864 INFO L85 PathProgramCache]: Analyzing trace with hash 322147610, now seen corresponding path program 6 times [2024-06-21 20:03:17,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:03:17,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557583299] [2024-06-21 20:03:17,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:03:17,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:03:17,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:03:18,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:03:18,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:03:18,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557583299] [2024-06-21 20:03:18,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557583299] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:03:18,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:03:18,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 20:03:18,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408375958] [2024-06-21 20:03:18,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:03:18,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 20:03:18,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:03:18,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 20:03:18,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-21 20:03:18,688 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:03:18,688 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 122 transitions, 1265 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:03:18,688 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:03:18,689 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:03:18,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:03:19,056 INFO L124 PetriNetUnfolderBase]: 390/682 cut-off events. [2024-06-21 20:03:19,057 INFO L125 PetriNetUnfolderBase]: For 17792/17792 co-relation queries the response was YES. [2024-06-21 20:03:19,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4354 conditions, 682 events. 390/682 cut-off events. For 17792/17792 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2855 event pairs, 70 based on Foata normal form. 2/683 useless extension candidates. Maximal degree in co-relation 4294. Up to 441 conditions per place. [2024-06-21 20:03:19,063 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 73 selfloop transitions, 65 changer transitions 0/140 dead transitions. [2024-06-21 20:03:19,064 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 140 transitions, 1707 flow [2024-06-21 20:03:19,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 20:03:19,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 20:03:19,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 95 transitions. [2024-06-21 20:03:19,065 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37109375 [2024-06-21 20:03:19,065 INFO L175 Difference]: Start difference. First operand has 125 places, 122 transitions, 1265 flow. Second operand 8 states and 95 transitions. [2024-06-21 20:03:19,065 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 140 transitions, 1707 flow [2024-06-21 20:03:19,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 140 transitions, 1608 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-21 20:03:19,095 INFO L231 Difference]: Finished difference. Result has 127 places, 126 transitions, 1369 flow [2024-06-21 20:03:19,095 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1166, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1369, PETRI_PLACES=127, PETRI_TRANSITIONS=126} [2024-06-21 20:03:19,096 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 96 predicate places. [2024-06-21 20:03:19,096 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 126 transitions, 1369 flow [2024-06-21 20:03:19,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:03:19,096 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:03:19,096 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:03:19,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-21 20:03:19,097 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)] === [2024-06-21 20:03:19,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:03:19,097 INFO L85 PathProgramCache]: Analyzing trace with hash -2046916496, now seen corresponding path program 2 times [2024-06-21 20:03:19,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:03:19,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533102104] [2024-06-21 20:03:19,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:03:19,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:03:19,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:03:20,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:03:20,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:03:20,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533102104] [2024-06-21 20:03:20,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533102104] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:03:20,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:03:20,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 20:03:20,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287675820] [2024-06-21 20:03:20,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:03:20,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 20:03:20,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:03:20,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 20:03:20,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-21 20:03:20,092 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:03:20,093 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 126 transitions, 1369 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:03:20,093 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:03:20,093 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:03:20,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:03:20,457 INFO L124 PetriNetUnfolderBase]: 396/692 cut-off events. [2024-06-21 20:03:20,458 INFO L125 PetriNetUnfolderBase]: For 18935/18935 co-relation queries the response was YES. [2024-06-21 20:03:20,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4512 conditions, 692 events. 396/692 cut-off events. For 18935/18935 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2901 event pairs, 91 based on Foata normal form. 2/693 useless extension candidates. Maximal degree in co-relation 4451. Up to 610 conditions per place. [2024-06-21 20:03:20,464 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 111 selfloop transitions, 26 changer transitions 0/139 dead transitions. [2024-06-21 20:03:20,464 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 139 transitions, 1699 flow [2024-06-21 20:03:20,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 20:03:20,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 20:03:20,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 95 transitions. [2024-06-21 20:03:20,466 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3298611111111111 [2024-06-21 20:03:20,466 INFO L175 Difference]: Start difference. First operand has 127 places, 126 transitions, 1369 flow. Second operand 9 states and 95 transitions. [2024-06-21 20:03:20,466 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 139 transitions, 1699 flow [2024-06-21 20:03:20,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 139 transitions, 1617 flow, removed 19 selfloop flow, removed 4 redundant places. [2024-06-21 20:03:20,496 INFO L231 Difference]: Finished difference. Result has 132 places, 128 transitions, 1368 flow [2024-06-21 20:03:20,497 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1287, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1368, PETRI_PLACES=132, PETRI_TRANSITIONS=128} [2024-06-21 20:03:20,497 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 101 predicate places. [2024-06-21 20:03:20,497 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 128 transitions, 1368 flow [2024-06-21 20:03:20,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:03:20,497 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:03:20,498 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:03:20,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-21 20:03:20,498 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)] === [2024-06-21 20:03:20,498 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:03:20,498 INFO L85 PathProgramCache]: Analyzing trace with hash -2047131822, now seen corresponding path program 7 times [2024-06-21 20:03:20,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:03:20,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080676725] [2024-06-21 20:03:20,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:03:20,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:03:20,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:03:21,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:03:21,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:03:21,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080676725] [2024-06-21 20:03:21,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080676725] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:03:21,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:03:21,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 20:03:21,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354262951] [2024-06-21 20:03:21,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:03:21,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 20:03:21,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:03:21,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 20:03:21,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-21 20:03:21,259 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:03:21,260 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 128 transitions, 1368 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:03:21,260 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:03:21,260 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:03:21,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:03:21,624 INFO L124 PetriNetUnfolderBase]: 402/702 cut-off events. [2024-06-21 20:03:21,624 INFO L125 PetriNetUnfolderBase]: For 19771/19771 co-relation queries the response was YES. [2024-06-21 20:03:21,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4610 conditions, 702 events. 402/702 cut-off events. For 19771/19771 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 2943 event pairs, 80 based on Foata normal form. 2/703 useless extension candidates. Maximal degree in co-relation 4547. Up to 570 conditions per place. [2024-06-21 20:03:21,629 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 102 selfloop transitions, 37 changer transitions 0/141 dead transitions. [2024-06-21 20:03:21,630 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 141 transitions, 1712 flow [2024-06-21 20:03:21,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 20:03:21,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 20:03:21,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 91 transitions. [2024-06-21 20:03:21,631 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35546875 [2024-06-21 20:03:21,631 INFO L175 Difference]: Start difference. First operand has 132 places, 128 transitions, 1368 flow. Second operand 8 states and 91 transitions. [2024-06-21 20:03:21,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 141 transitions, 1712 flow [2024-06-21 20:03:21,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 141 transitions, 1647 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-21 20:03:21,664 INFO L231 Difference]: Finished difference. Result has 133 places, 130 transitions, 1420 flow [2024-06-21 20:03:21,664 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1303, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1420, PETRI_PLACES=133, PETRI_TRANSITIONS=130} [2024-06-21 20:03:21,664 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 102 predicate places. [2024-06-21 20:03:21,664 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 130 transitions, 1420 flow [2024-06-21 20:03:21,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:03:21,665 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:03:21,665 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:03:21,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-21 20:03:21,665 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)] === [2024-06-21 20:03:21,666 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:03:21,666 INFO L85 PathProgramCache]: Analyzing trace with hash -2047126025, now seen corresponding path program 2 times [2024-06-21 20:03:21,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:03:21,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252509612] [2024-06-21 20:03:21,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:03:21,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:03:21,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:03:22,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:03:22,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:03:22,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252509612] [2024-06-21 20:03:22,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252509612] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:03:22,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:03:22,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 20:03:22,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728705783] [2024-06-21 20:03:22,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:03:22,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 20:03:22,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:03:22,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 20:03:22,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-21 20:03:22,747 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:03:22,747 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 130 transitions, 1420 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:03:22,748 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:03:22,748 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:03:22,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:03:23,055 INFO L124 PetriNetUnfolderBase]: 400/699 cut-off events. [2024-06-21 20:03:23,056 INFO L125 PetriNetUnfolderBase]: For 20215/20215 co-relation queries the response was YES. [2024-06-21 20:03:23,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4629 conditions, 699 events. 400/699 cut-off events. For 20215/20215 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 2944 event pairs, 91 based on Foata normal form. 1/699 useless extension candidates. Maximal degree in co-relation 4565. Up to 619 conditions per place. [2024-06-21 20:03:23,061 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 110 selfloop transitions, 27 changer transitions 0/139 dead transitions. [2024-06-21 20:03:23,062 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 139 transitions, 1722 flow [2024-06-21 20:03:23,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 20:03:23,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 20:03:23,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 87 transitions. [2024-06-21 20:03:23,063 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33984375 [2024-06-21 20:03:23,063 INFO L175 Difference]: Start difference. First operand has 133 places, 130 transitions, 1420 flow. Second operand 8 states and 87 transitions. [2024-06-21 20:03:23,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 139 transitions, 1722 flow [2024-06-21 20:03:23,097 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 139 transitions, 1625 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-06-21 20:03:23,099 INFO L231 Difference]: Finished difference. Result has 135 places, 130 transitions, 1385 flow [2024-06-21 20:03:23,099 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1323, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1385, PETRI_PLACES=135, PETRI_TRANSITIONS=130} [2024-06-21 20:03:23,100 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 104 predicate places. [2024-06-21 20:03:23,100 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 130 transitions, 1385 flow [2024-06-21 20:03:23,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:03:23,100 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:03:23,100 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:03:23,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-21 20:03:23,101 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)] === [2024-06-21 20:03:23,101 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:03:23,101 INFO L85 PathProgramCache]: Analyzing trace with hash -1780892786, now seen corresponding path program 3 times [2024-06-21 20:03:23,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:03:23,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805872576] [2024-06-21 20:03:23,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:03:23,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:03:23,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:03:23,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:03:23,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:03:23,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805872576] [2024-06-21 20:03:23,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805872576] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:03:23,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:03:23,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 20:03:23,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044913049] [2024-06-21 20:03:23,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:03:23,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 20:03:23,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:03:23,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 20:03:23,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-21 20:03:24,067 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:03:24,068 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 130 transitions, 1385 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:03:24,068 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:03:24,068 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:03:24,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:03:24,371 INFO L124 PetriNetUnfolderBase]: 422/735 cut-off events. [2024-06-21 20:03:24,372 INFO L125 PetriNetUnfolderBase]: For 23862/23862 co-relation queries the response was YES. [2024-06-21 20:03:24,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4835 conditions, 735 events. 422/735 cut-off events. For 23862/23862 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 3143 event pairs, 110 based on Foata normal form. 4/738 useless extension candidates. Maximal degree in co-relation 4770. Up to 687 conditions per place. [2024-06-21 20:03:24,379 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 126 selfloop transitions, 19 changer transitions 0/147 dead transitions. [2024-06-21 20:03:24,380 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 147 transitions, 1821 flow [2024-06-21 20:03:24,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 20:03:24,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 20:03:24,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 101 transitions. [2024-06-21 20:03:24,389 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.315625 [2024-06-21 20:03:24,389 INFO L175 Difference]: Start difference. First operand has 135 places, 130 transitions, 1385 flow. Second operand 10 states and 101 transitions. [2024-06-21 20:03:24,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 147 transitions, 1821 flow [2024-06-21 20:03:24,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 147 transitions, 1731 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-21 20:03:24,430 INFO L231 Difference]: Finished difference. Result has 138 places, 135 transitions, 1396 flow [2024-06-21 20:03:24,430 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1297, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1396, PETRI_PLACES=138, PETRI_TRANSITIONS=135} [2024-06-21 20:03:24,431 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 107 predicate places. [2024-06-21 20:03:24,431 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 135 transitions, 1396 flow [2024-06-21 20:03:24,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:03:24,431 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:03:24,431 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:03:24,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-21 20:03:24,432 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)] === [2024-06-21 20:03:24,432 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:03:24,432 INFO L85 PathProgramCache]: Analyzing trace with hash -1781219216, now seen corresponding path program 4 times [2024-06-21 20:03:24,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:03:24,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549262522] [2024-06-21 20:03:24,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:03:24,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:03:24,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:03:25,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:03:25,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:03:25,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549262522] [2024-06-21 20:03:25,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549262522] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:03:25,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:03:25,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 20:03:25,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126817713] [2024-06-21 20:03:25,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:03:25,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 20:03:25,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:03:25,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 20:03:25,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-21 20:03:25,381 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:03:25,382 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 135 transitions, 1396 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:03:25,382 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:03:25,382 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:03:25,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:03:25,674 INFO L124 PetriNetUnfolderBase]: 428/745 cut-off events. [2024-06-21 20:03:25,674 INFO L125 PetriNetUnfolderBase]: For 22986/22986 co-relation queries the response was YES. [2024-06-21 20:03:25,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4916 conditions, 745 events. 428/745 cut-off events. For 22986/22986 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3186 event pairs, 84 based on Foata normal form. 2/746 useless extension candidates. Maximal degree in co-relation 4850. Up to 511 conditions per place. [2024-06-21 20:03:25,696 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 96 selfloop transitions, 55 changer transitions 0/153 dead transitions. [2024-06-21 20:03:25,696 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 153 transitions, 1868 flow [2024-06-21 20:03:25,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 20:03:25,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 20:03:25,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 103 transitions. [2024-06-21 20:03:25,705 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3576388888888889 [2024-06-21 20:03:25,705 INFO L175 Difference]: Start difference. First operand has 138 places, 135 transitions, 1396 flow. Second operand 9 states and 103 transitions. [2024-06-21 20:03:25,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 153 transitions, 1868 flow [2024-06-21 20:03:25,743 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 153 transitions, 1821 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-21 20:03:25,746 INFO L231 Difference]: Finished difference. Result has 142 places, 139 transitions, 1547 flow [2024-06-21 20:03:25,746 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1349, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1547, PETRI_PLACES=142, PETRI_TRANSITIONS=139} [2024-06-21 20:03:25,746 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 111 predicate places. [2024-06-21 20:03:25,747 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 139 transitions, 1547 flow [2024-06-21 20:03:25,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:03:25,747 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:03:25,747 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:03:25,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-21 20:03:25,747 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)] === [2024-06-21 20:03:25,748 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:03:25,748 INFO L85 PathProgramCache]: Analyzing trace with hash 65445290, now seen corresponding path program 8 times [2024-06-21 20:03:25,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:03:25,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364119918] [2024-06-21 20:03:25,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:03:25,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:03:25,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:03:26,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:03:26,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:03:26,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364119918] [2024-06-21 20:03:26,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364119918] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:03:26,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:03:26,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 20:03:26,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109275396] [2024-06-21 20:03:26,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:03:26,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 20:03:26,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:03:26,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 20:03:26,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-21 20:03:26,605 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:03:26,606 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 139 transitions, 1547 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:03:26,606 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:03:26,606 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:03:26,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:03:26,945 INFO L124 PetriNetUnfolderBase]: 424/739 cut-off events. [2024-06-21 20:03:26,946 INFO L125 PetriNetUnfolderBase]: For 23605/23605 co-relation queries the response was YES. [2024-06-21 20:03:26,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5021 conditions, 739 events. 424/739 cut-off events. For 23605/23605 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3164 event pairs, 82 based on Foata normal form. 2/740 useless extension candidates. Maximal degree in co-relation 4952. Up to 586 conditions per place. [2024-06-21 20:03:26,951 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 106 selfloop transitions, 44 changer transitions 0/152 dead transitions. [2024-06-21 20:03:26,951 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 152 transitions, 1889 flow [2024-06-21 20:03:26,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 20:03:26,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 20:03:26,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 95 transitions. [2024-06-21 20:03:26,961 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37109375 [2024-06-21 20:03:26,961 INFO L175 Difference]: Start difference. First operand has 142 places, 139 transitions, 1547 flow. Second operand 8 states and 95 transitions. [2024-06-21 20:03:26,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 152 transitions, 1889 flow [2024-06-21 20:03:27,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 152 transitions, 1807 flow, removed 14 selfloop flow, removed 5 redundant places. [2024-06-21 20:03:27,006 INFO L231 Difference]: Finished difference. Result has 145 places, 139 transitions, 1561 flow [2024-06-21 20:03:27,006 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1465, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1561, PETRI_PLACES=145, PETRI_TRANSITIONS=139} [2024-06-21 20:03:27,006 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 114 predicate places. [2024-06-21 20:03:27,007 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 139 transitions, 1561 flow [2024-06-21 20:03:27,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:03:27,007 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:03:27,007 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:03:27,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-21 20:03:27,007 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)] === [2024-06-21 20:03:27,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:03:27,008 INFO L85 PathProgramCache]: Analyzing trace with hash 322155546, now seen corresponding path program 5 times [2024-06-21 20:03:27,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:03:27,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869803194] [2024-06-21 20:03:27,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:03:27,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:03:27,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:03:27,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:03:27,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:03:27,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869803194] [2024-06-21 20:03:27,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869803194] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:03:27,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:03:27,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 20:03:27,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414552444] [2024-06-21 20:03:27,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:03:27,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 20:03:27,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:03:27,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 20:03:27,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-21 20:03:28,003 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:03:28,003 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 139 transitions, 1561 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:03:28,003 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:03:28,003 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:03:28,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:03:28,326 INFO L124 PetriNetUnfolderBase]: 425/741 cut-off events. [2024-06-21 20:03:28,326 INFO L125 PetriNetUnfolderBase]: For 24295/24295 co-relation queries the response was YES. [2024-06-21 20:03:28,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5096 conditions, 741 events. 425/741 cut-off events. For 24295/24295 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 3185 event pairs, 89 based on Foata normal form. 2/742 useless extension candidates. Maximal degree in co-relation 5025. Up to 629 conditions per place. [2024-06-21 20:03:28,331 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 113 selfloop transitions, 38 changer transitions 0/153 dead transitions. [2024-06-21 20:03:28,331 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 153 transitions, 1934 flow [2024-06-21 20:03:28,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 20:03:28,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 20:03:28,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-21 20:03:28,332 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3368055555555556 [2024-06-21 20:03:28,332 INFO L175 Difference]: Start difference. First operand has 145 places, 139 transitions, 1561 flow. Second operand 9 states and 97 transitions. [2024-06-21 20:03:28,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 153 transitions, 1934 flow [2024-06-21 20:03:28,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 153 transitions, 1722 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-21 20:03:28,367 INFO L231 Difference]: Finished difference. Result has 145 places, 141 transitions, 1463 flow [2024-06-21 20:03:28,367 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1349, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1463, PETRI_PLACES=145, PETRI_TRANSITIONS=141} [2024-06-21 20:03:28,367 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 114 predicate places. [2024-06-21 20:03:28,367 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 141 transitions, 1463 flow [2024-06-21 20:03:28,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:03:28,367 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:03:28,368 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:03:28,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-21 20:03:28,368 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)] === [2024-06-21 20:03:28,368 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:03:28,368 INFO L85 PathProgramCache]: Analyzing trace with hash -1780880882, now seen corresponding path program 1 times [2024-06-21 20:03:28,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:03:28,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682082667] [2024-06-21 20:03:28,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:03:28,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:03:28,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:03:29,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:03:29,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:03:29,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682082667] [2024-06-21 20:03:29,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682082667] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:03:29,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:03:29,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 20:03:29,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346577666] [2024-06-21 20:03:29,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:03:29,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 20:03:29,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:03:29,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 20:03:29,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-21 20:03:29,660 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:03:29,660 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 141 transitions, 1463 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:03:29,661 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:03:29,661 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:03:29,661 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:03:30,050 INFO L124 PetriNetUnfolderBase]: 422/736 cut-off events. [2024-06-21 20:03:30,051 INFO L125 PetriNetUnfolderBase]: For 24087/24087 co-relation queries the response was YES. [2024-06-21 20:03:30,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4823 conditions, 736 events. 422/736 cut-off events. For 24087/24087 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3117 event pairs, 115 based on Foata normal form. 2/737 useless extension candidates. Maximal degree in co-relation 4753. Up to 705 conditions per place. [2024-06-21 20:03:30,058 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 133 selfloop transitions, 16 changer transitions 0/151 dead transitions. [2024-06-21 20:03:30,058 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 151 transitions, 1783 flow [2024-06-21 20:03:30,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 20:03:30,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 20:03:30,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 95 transitions. [2024-06-21 20:03:30,062 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.296875 [2024-06-21 20:03:30,062 INFO L175 Difference]: Start difference. First operand has 145 places, 141 transitions, 1463 flow. Second operand 10 states and 95 transitions. [2024-06-21 20:03:30,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 151 transitions, 1783 flow [2024-06-21 20:03:30,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 151 transitions, 1688 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-21 20:03:30,117 INFO L231 Difference]: Finished difference. Result has 148 places, 141 transitions, 1404 flow [2024-06-21 20:03:30,118 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1368, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1404, PETRI_PLACES=148, PETRI_TRANSITIONS=141} [2024-06-21 20:03:30,118 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 117 predicate places. [2024-06-21 20:03:30,118 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 141 transitions, 1404 flow [2024-06-21 20:03:30,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:03:30,119 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:03:30,119 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:03:30,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-21 20:03:30,119 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)] === [2024-06-21 20:03:30,119 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:03:30,119 INFO L85 PathProgramCache]: Analyzing trace with hash 20404230, now seen corresponding path program 1 times [2024-06-21 20:03:30,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:03:30,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750678049] [2024-06-21 20:03:30,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:03:30,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:03:30,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:03:31,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:03:31,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:03:31,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750678049] [2024-06-21 20:03:31,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750678049] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:03:31,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:03:31,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 20:03:31,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719762792] [2024-06-21 20:03:31,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:03:31,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 20:03:31,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:03:31,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 20:03:31,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-21 20:03:31,426 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:03:31,427 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 141 transitions, 1404 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:03:31,427 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:03:31,427 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:03:31,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:03:31,863 INFO L124 PetriNetUnfolderBase]: 426/744 cut-off events. [2024-06-21 20:03:31,863 INFO L125 PetriNetUnfolderBase]: For 25044/25044 co-relation queries the response was YES. [2024-06-21 20:03:31,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4808 conditions, 744 events. 426/744 cut-off events. For 25044/25044 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 3175 event pairs, 77 based on Foata normal form. 2/745 useless extension candidates. Maximal degree in co-relation 4737. Up to 651 conditions per place. [2024-06-21 20:03:31,871 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 128 selfloop transitions, 25 changer transitions 0/155 dead transitions. [2024-06-21 20:03:31,871 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 155 transitions, 1754 flow [2024-06-21 20:03:31,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 20:03:31,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 20:03:31,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 89 transitions. [2024-06-21 20:03:31,873 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34765625 [2024-06-21 20:03:31,873 INFO L175 Difference]: Start difference. First operand has 148 places, 141 transitions, 1404 flow. Second operand 8 states and 89 transitions. [2024-06-21 20:03:31,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 155 transitions, 1754 flow [2024-06-21 20:03:31,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 155 transitions, 1712 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-21 20:03:31,924 INFO L231 Difference]: Finished difference. Result has 148 places, 142 transitions, 1431 flow [2024-06-21 20:03:31,925 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1362, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1431, PETRI_PLACES=148, PETRI_TRANSITIONS=142} [2024-06-21 20:03:31,926 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 117 predicate places. [2024-06-21 20:03:31,926 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 142 transitions, 1431 flow [2024-06-21 20:03:31,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:03:31,927 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:03:31,927 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:03:31,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-21 20:03:31,927 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)] === [2024-06-21 20:03:31,927 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:03:31,927 INFO L85 PathProgramCache]: Analyzing trace with hash 20343780, now seen corresponding path program 2 times [2024-06-21 20:03:31,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:03:31,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746670681] [2024-06-21 20:03:31,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:03:31,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:03:31,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:03:33,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:03:33,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:03:33,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746670681] [2024-06-21 20:03:33,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746670681] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:03:33,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:03:33,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 20:03:33,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097513472] [2024-06-21 20:03:33,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:03:33,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 20:03:33,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:03:33,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 20:03:33,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-21 20:03:33,327 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:03:33,327 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 142 transitions, 1431 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:03:33,327 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:03:33,327 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:03:33,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:03:33,715 INFO L124 PetriNetUnfolderBase]: 430/752 cut-off events. [2024-06-21 20:03:33,715 INFO L125 PetriNetUnfolderBase]: For 25931/25931 co-relation queries the response was YES. [2024-06-21 20:03:33,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4900 conditions, 752 events. 430/752 cut-off events. For 25931/25931 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 3208 event pairs, 62 based on Foata normal form. 2/753 useless extension candidates. Maximal degree in co-relation 4828. Up to 630 conditions per place. [2024-06-21 20:03:33,720 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 129 selfloop transitions, 27 changer transitions 0/158 dead transitions. [2024-06-21 20:03:33,720 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 158 transitions, 1793 flow [2024-06-21 20:03:33,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 20:03:33,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 20:03:33,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-21 20:03:33,723 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3368055555555556 [2024-06-21 20:03:33,723 INFO L175 Difference]: Start difference. First operand has 148 places, 142 transitions, 1431 flow. Second operand 9 states and 97 transitions. [2024-06-21 20:03:33,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 158 transitions, 1793 flow [2024-06-21 20:03:33,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 158 transitions, 1740 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-21 20:03:33,766 INFO L231 Difference]: Finished difference. Result has 151 places, 143 transitions, 1450 flow [2024-06-21 20:03:33,766 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1378, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1450, PETRI_PLACES=151, PETRI_TRANSITIONS=143} [2024-06-21 20:03:33,767 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 120 predicate places. [2024-06-21 20:03:33,767 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 143 transitions, 1450 flow [2024-06-21 20:03:33,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:03:33,767 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:03:33,767 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:03:33,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-21 20:03:33,767 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)] === [2024-06-21 20:03:33,768 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:03:33,768 INFO L85 PathProgramCache]: Analyzing trace with hash 133428738, now seen corresponding path program 1 times [2024-06-21 20:03:33,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:03:33,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879164568] [2024-06-21 20:03:33,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:03:33,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:03:33,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:03:34,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:03:34,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:03:34,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879164568] [2024-06-21 20:03:34,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879164568] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:03:34,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:03:34,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 20:03:34,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488422008] [2024-06-21 20:03:34,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:03:34,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 20:03:34,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:03:34,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 20:03:34,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-21 20:03:34,860 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:03:34,860 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 143 transitions, 1450 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:03:34,860 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:03:34,860 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:03:34,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:03:35,215 INFO L124 PetriNetUnfolderBase]: 426/746 cut-off events. [2024-06-21 20:03:35,215 INFO L125 PetriNetUnfolderBase]: For 26452/26452 co-relation queries the response was YES. [2024-06-21 20:03:35,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4836 conditions, 746 events. 426/746 cut-off events. For 26452/26452 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 3198 event pairs, 77 based on Foata normal form. 2/747 useless extension candidates. Maximal degree in co-relation 4763. Up to 643 conditions per place. [2024-06-21 20:03:35,220 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 122 selfloop transitions, 32 changer transitions 0/156 dead transitions. [2024-06-21 20:03:35,220 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 156 transitions, 1794 flow [2024-06-21 20:03:35,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 20:03:35,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 20:03:35,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 90 transitions. [2024-06-21 20:03:35,221 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3515625 [2024-06-21 20:03:35,222 INFO L175 Difference]: Start difference. First operand has 151 places, 143 transitions, 1450 flow. Second operand 8 states and 90 transitions. [2024-06-21 20:03:35,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 156 transitions, 1794 flow [2024-06-21 20:03:35,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 156 transitions, 1720 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-21 20:03:35,264 INFO L231 Difference]: Finished difference. Result has 152 places, 143 transitions, 1454 flow [2024-06-21 20:03:35,264 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1376, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1454, PETRI_PLACES=152, PETRI_TRANSITIONS=143} [2024-06-21 20:03:35,264 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 121 predicate places. [2024-06-21 20:03:35,265 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 143 transitions, 1454 flow [2024-06-21 20:03:35,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:03:35,265 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:03:35,265 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:03:35,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-21 20:03:35,265 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)] === [2024-06-21 20:03:35,265 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:03:35,265 INFO L85 PathProgramCache]: Analyzing trace with hash 23205700, now seen corresponding path program 1 times [2024-06-21 20:03:35,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:03:35,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12167483] [2024-06-21 20:03:35,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:03:35,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:03:35,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:03:36,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:03:36,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:03:36,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12167483] [2024-06-21 20:03:36,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12167483] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:03:36,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:03:36,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 20:03:36,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035118886] [2024-06-21 20:03:36,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:03:36,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 20:03:36,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:03:36,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 20:03:36,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-21 20:03:36,255 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:03:36,255 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 143 transitions, 1454 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:03:36,256 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:03:36,256 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:03:36,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:03:36,603 INFO L124 PetriNetUnfolderBase]: 432/756 cut-off events. [2024-06-21 20:03:36,603 INFO L125 PetriNetUnfolderBase]: For 27479/27479 co-relation queries the response was YES. [2024-06-21 20:03:36,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4916 conditions, 756 events. 432/756 cut-off events. For 27479/27479 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 3262 event pairs, 68 based on Foata normal form. 2/757 useless extension candidates. Maximal degree in co-relation 4842. Up to 653 conditions per place. [2024-06-21 20:03:36,609 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 131 selfloop transitions, 27 changer transitions 0/160 dead transitions. [2024-06-21 20:03:36,609 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 160 transitions, 1834 flow [2024-06-21 20:03:36,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 20:03:36,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 20:03:36,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 99 transitions. [2024-06-21 20:03:36,610 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-21 20:03:36,610 INFO L175 Difference]: Start difference. First operand has 152 places, 143 transitions, 1454 flow. Second operand 9 states and 99 transitions. [2024-06-21 20:03:36,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 160 transitions, 1834 flow [2024-06-21 20:03:36,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 160 transitions, 1766 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-21 20:03:36,655 INFO L231 Difference]: Finished difference. Result has 155 places, 145 transitions, 1472 flow [2024-06-21 20:03:36,655 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1386, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1472, PETRI_PLACES=155, PETRI_TRANSITIONS=145} [2024-06-21 20:03:36,656 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 124 predicate places. [2024-06-21 20:03:36,656 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 145 transitions, 1472 flow [2024-06-21 20:03:36,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:03:36,656 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:03:36,656 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:03:36,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-21 20:03:36,657 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)] === [2024-06-21 20:03:36,662 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:03:36,662 INFO L85 PathProgramCache]: Analyzing trace with hash 138081714, now seen corresponding path program 2 times [2024-06-21 20:03:36,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:03:36,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367951340] [2024-06-21 20:03:36,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:03:36,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:03:36,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:03:37,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:03:37,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:03:37,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367951340] [2024-06-21 20:03:37,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367951340] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:03:37,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:03:37,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 20:03:37,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634913735] [2024-06-21 20:03:37,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:03:37,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 20:03:37,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:03:37,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 20:03:37,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-21 20:03:37,689 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:03:37,689 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 145 transitions, 1472 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:03:37,689 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:03:37,689 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:03:37,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:03:38,077 INFO L124 PetriNetUnfolderBase]: 448/782 cut-off events. [2024-06-21 20:03:38,077 INFO L125 PetriNetUnfolderBase]: For 30581/30581 co-relation queries the response was YES. [2024-06-21 20:03:38,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5185 conditions, 782 events. 448/782 cut-off events. For 30581/30581 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 3396 event pairs, 63 based on Foata normal form. 2/783 useless extension candidates. Maximal degree in co-relation 5110. Up to 522 conditions per place. [2024-06-21 20:03:38,083 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 100 selfloop transitions, 65 changer transitions 0/167 dead transitions. [2024-06-21 20:03:38,083 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 167 transitions, 1992 flow [2024-06-21 20:03:38,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 20:03:38,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 20:03:38,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 107 transitions. [2024-06-21 20:03:38,084 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3715277777777778 [2024-06-21 20:03:38,084 INFO L175 Difference]: Start difference. First operand has 155 places, 145 transitions, 1472 flow. Second operand 9 states and 107 transitions. [2024-06-21 20:03:38,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 167 transitions, 1992 flow [2024-06-21 20:03:38,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 167 transitions, 1924 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-21 20:03:38,139 INFO L231 Difference]: Finished difference. Result has 157 places, 149 transitions, 1596 flow [2024-06-21 20:03:38,139 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1404, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1596, PETRI_PLACES=157, PETRI_TRANSITIONS=149} [2024-06-21 20:03:38,140 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 126 predicate places. [2024-06-21 20:03:38,140 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 149 transitions, 1596 flow [2024-06-21 20:03:38,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:03:38,140 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:03:38,140 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:03:38,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-21 20:03:38,141 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)] === [2024-06-21 20:03:38,141 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:03:38,141 INFO L85 PathProgramCache]: Analyzing trace with hash 138676608, now seen corresponding path program 1 times [2024-06-21 20:03:38,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:03:38,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336944683] [2024-06-21 20:03:38,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:03:38,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:03:38,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:03:39,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:03:39,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:03:39,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336944683] [2024-06-21 20:03:39,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336944683] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:03:39,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:03:39,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 20:03:39,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488116864] [2024-06-21 20:03:39,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:03:39,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 20:03:39,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:03:39,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 20:03:39,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-21 20:03:39,467 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:03:39,467 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 149 transitions, 1596 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:03:39,467 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:03:39,467 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:03:39,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:03:39,930 INFO L124 PetriNetUnfolderBase]: 451/787 cut-off events. [2024-06-21 20:03:39,931 INFO L125 PetriNetUnfolderBase]: For 32018/32018 co-relation queries the response was YES. [2024-06-21 20:03:39,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5375 conditions, 787 events. 451/787 cut-off events. For 32018/32018 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 3438 event pairs, 86 based on Foata normal form. 1/787 useless extension candidates. Maximal degree in co-relation 5299. Up to 681 conditions per place. [2024-06-21 20:03:39,936 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 126 selfloop transitions, 36 changer transitions 0/164 dead transitions. [2024-06-21 20:03:39,936 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 164 transitions, 1995 flow [2024-06-21 20:03:39,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 20:03:39,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 20:03:39,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-06-21 20:03:39,937 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3402777777777778 [2024-06-21 20:03:39,937 INFO L175 Difference]: Start difference. First operand has 157 places, 149 transitions, 1596 flow. Second operand 9 states and 98 transitions. [2024-06-21 20:03:39,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 164 transitions, 1995 flow [2024-06-21 20:03:39,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 164 transitions, 1894 flow, removed 13 selfloop flow, removed 5 redundant places. [2024-06-21 20:03:39,987 INFO L231 Difference]: Finished difference. Result has 161 places, 151 transitions, 1612 flow [2024-06-21 20:03:39,987 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1495, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1612, PETRI_PLACES=161, PETRI_TRANSITIONS=151} [2024-06-21 20:03:39,987 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 130 predicate places. [2024-06-21 20:03:39,987 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 151 transitions, 1612 flow [2024-06-21 20:03:39,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:03:39,988 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:03:39,988 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:03:39,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-21 20:03:39,988 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)] === [2024-06-21 20:03:39,989 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:03:39,989 INFO L85 PathProgramCache]: Analyzing trace with hash 138491910, now seen corresponding path program 3 times [2024-06-21 20:03:39,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:03:39,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435303950] [2024-06-21 20:03:39,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:03:39,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:03:39,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:03:40,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:03:40,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:03:40,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435303950] [2024-06-21 20:03:40,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435303950] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:03:40,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:03:40,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 20:03:40,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776796390] [2024-06-21 20:03:40,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:03:40,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 20:03:40,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:03:40,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 20:03:40,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-21 20:03:40,996 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:03:40,997 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 151 transitions, 1612 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:03:40,997 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:03:40,997 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:03:40,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:03:41,411 INFO L124 PetriNetUnfolderBase]: 455/795 cut-off events. [2024-06-21 20:03:41,411 INFO L125 PetriNetUnfolderBase]: For 34091/34091 co-relation queries the response was YES. [2024-06-21 20:03:41,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5479 conditions, 795 events. 455/795 cut-off events. For 34091/34091 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3467 event pairs, 66 based on Foata normal form. 2/796 useless extension candidates. Maximal degree in co-relation 5401. Up to 663 conditions per place. [2024-06-21 20:03:41,417 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 125 selfloop transitions, 37 changer transitions 0/164 dead transitions. [2024-06-21 20:03:41,417 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 164 transitions, 1982 flow [2024-06-21 20:03:41,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 20:03:41,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 20:03:41,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 92 transitions. [2024-06-21 20:03:41,418 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.359375 [2024-06-21 20:03:41,418 INFO L175 Difference]: Start difference. First operand has 161 places, 151 transitions, 1612 flow. Second operand 8 states and 92 transitions. [2024-06-21 20:03:41,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 164 transitions, 1982 flow [2024-06-21 20:03:41,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 164 transitions, 1894 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-21 20:03:41,467 INFO L231 Difference]: Finished difference. Result has 162 places, 152 transitions, 1619 flow [2024-06-21 20:03:41,468 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1524, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1619, PETRI_PLACES=162, PETRI_TRANSITIONS=152} [2024-06-21 20:03:41,468 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 131 predicate places. [2024-06-21 20:03:41,468 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 152 transitions, 1619 flow [2024-06-21 20:03:41,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:03:41,469 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:03:41,469 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:03:41,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-21 20:03:41,469 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)] === [2024-06-21 20:03:41,470 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:03:41,470 INFO L85 PathProgramCache]: Analyzing trace with hash 518978868, now seen corresponding path program 3 times [2024-06-21 20:03:41,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:03:41,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584063137] [2024-06-21 20:03:41,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:03:41,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:03:41,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:03:42,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:03:42,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:03:42,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584063137] [2024-06-21 20:03:42,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584063137] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:03:42,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:03:42,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 20:03:42,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69987068] [2024-06-21 20:03:42,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:03:42,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 20:03:42,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:03:42,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 20:03:42,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-21 20:03:42,417 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:03:42,417 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 152 transitions, 1619 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:03:42,417 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:03:42,418 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:03:42,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:03:42,770 INFO L124 PetriNetUnfolderBase]: 461/805 cut-off events. [2024-06-21 20:03:42,770 INFO L125 PetriNetUnfolderBase]: For 35939/35939 co-relation queries the response was YES. [2024-06-21 20:03:42,774 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5571 conditions, 805 events. 461/805 cut-off events. For 35939/35939 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 3548 event pairs, 62 based on Foata normal form. 2/806 useless extension candidates. Maximal degree in co-relation 5492. Up to 597 conditions per place. [2024-06-21 20:03:42,776 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 107 selfloop transitions, 61 changer transitions 0/170 dead transitions. [2024-06-21 20:03:42,776 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 170 transitions, 2031 flow [2024-06-21 20:03:42,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 20:03:42,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 20:03:42,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 104 transitions. [2024-06-21 20:03:42,777 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3611111111111111 [2024-06-21 20:03:42,777 INFO L175 Difference]: Start difference. First operand has 162 places, 152 transitions, 1619 flow. Second operand 9 states and 104 transitions. [2024-06-21 20:03:42,777 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 170 transitions, 2031 flow [2024-06-21 20:03:42,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 170 transitions, 1948 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-21 20:03:42,842 INFO L231 Difference]: Finished difference. Result has 165 places, 154 transitions, 1694 flow [2024-06-21 20:03:42,842 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1536, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1694, PETRI_PLACES=165, PETRI_TRANSITIONS=154} [2024-06-21 20:03:42,843 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 134 predicate places. [2024-06-21 20:03:42,843 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 154 transitions, 1694 flow [2024-06-21 20:03:42,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:03:42,843 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:03:42,843 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:03:42,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-21 20:03:42,843 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)] === [2024-06-21 20:03:42,844 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:03:42,844 INFO L85 PathProgramCache]: Analyzing trace with hash 1176788142, now seen corresponding path program 4 times [2024-06-21 20:03:42,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:03:42,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606077779] [2024-06-21 20:03:42,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:03:42,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:03:42,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:03:43,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:03:43,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:03:43,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606077779] [2024-06-21 20:03:43,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606077779] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:03:43,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:03:43,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 20:03:43,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572079478] [2024-06-21 20:03:43,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:03:43,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 20:03:43,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:03:43,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 20:03:43,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-21 20:03:43,929 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:03:43,929 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 154 transitions, 1694 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:03:43,929 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:03:43,929 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:03:43,930 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:03:44,352 INFO L124 PetriNetUnfolderBase]: 462/807 cut-off events. [2024-06-21 20:03:44,352 INFO L125 PetriNetUnfolderBase]: For 36659/36659 co-relation queries the response was YES. [2024-06-21 20:03:44,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5643 conditions, 807 events. 462/807 cut-off events. For 36659/36659 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 3549 event pairs, 68 based on Foata normal form. 2/808 useless extension candidates. Maximal degree in co-relation 5563. Up to 655 conditions per place. [2024-06-21 20:03:44,357 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 126 selfloop transitions, 42 changer transitions 0/170 dead transitions. [2024-06-21 20:03:44,357 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 170 transitions, 2100 flow [2024-06-21 20:03:44,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 20:03:44,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 20:03:44,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 102 transitions. [2024-06-21 20:03:44,358 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3541666666666667 [2024-06-21 20:03:44,358 INFO L175 Difference]: Start difference. First operand has 165 places, 154 transitions, 1694 flow. Second operand 9 states and 102 transitions. [2024-06-21 20:03:44,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 170 transitions, 2100 flow [2024-06-21 20:03:44,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 170 transitions, 1964 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-21 20:03:44,441 INFO L231 Difference]: Finished difference. Result has 167 places, 156 transitions, 1682 flow [2024-06-21 20:03:44,441 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1558, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1682, PETRI_PLACES=167, PETRI_TRANSITIONS=156} [2024-06-21 20:03:44,441 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 136 predicate places. [2024-06-21 20:03:44,441 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 156 transitions, 1682 flow [2024-06-21 20:03:44,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:03:44,442 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:03:44,442 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:03:44,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-21 20:03:44,442 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)] === [2024-06-21 20:03:44,442 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:03:44,443 INFO L85 PathProgramCache]: Analyzing trace with hash 1349697090, now seen corresponding path program 1 times [2024-06-21 20:03:44,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:03:44,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542855741] [2024-06-21 20:03:44,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:03:44,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:03:44,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:03:45,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:03:45,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:03:45,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542855741] [2024-06-21 20:03:45,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542855741] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:03:45,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:03:45,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 20:03:45,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790970708] [2024-06-21 20:03:45,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:03:45,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 20:03:45,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:03:45,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 20:03:45,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-21 20:03:45,852 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:03:45,853 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 156 transitions, 1682 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:03:45,853 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:03:45,853 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:03:45,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:03:46,296 INFO L124 PetriNetUnfolderBase]: 468/818 cut-off events. [2024-06-21 20:03:46,297 INFO L125 PetriNetUnfolderBase]: For 38302/38302 co-relation queries the response was YES. [2024-06-21 20:03:46,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5685 conditions, 818 events. 468/818 cut-off events. For 38302/38302 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 3642 event pairs, 89 based on Foata normal form. 2/819 useless extension candidates. Maximal degree in co-relation 5604. Up to 717 conditions per place. [2024-06-21 20:03:46,302 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 141 selfloop transitions, 31 changer transitions 0/174 dead transitions. [2024-06-21 20:03:46,302 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 174 transitions, 2118 flow [2024-06-21 20:03:46,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 20:03:46,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 20:03:46,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-21 20:03:46,303 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33125 [2024-06-21 20:03:46,303 INFO L175 Difference]: Start difference. First operand has 167 places, 156 transitions, 1682 flow. Second operand 10 states and 106 transitions. [2024-06-21 20:03:46,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 174 transitions, 2118 flow [2024-06-21 20:03:46,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 174 transitions, 2016 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-21 20:03:46,362 INFO L231 Difference]: Finished difference. Result has 170 places, 158 transitions, 1681 flow [2024-06-21 20:03:46,362 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1580, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1681, PETRI_PLACES=170, PETRI_TRANSITIONS=158} [2024-06-21 20:03:46,363 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 139 predicate places. [2024-06-21 20:03:46,363 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 158 transitions, 1681 flow [2024-06-21 20:03:46,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:03:46,363 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:03:46,363 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:03:46,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-21 20:03:46,363 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)] === [2024-06-21 20:03:46,363 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:03:46,364 INFO L85 PathProgramCache]: Analyzing trace with hash -404450170, now seen corresponding path program 4 times [2024-06-21 20:03:46,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:03:46,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398148062] [2024-06-21 20:03:46,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:03:46,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:03:46,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:03:47,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:03:47,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:03:47,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398148062] [2024-06-21 20:03:47,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398148062] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:03:47,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:03:47,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 20:03:47,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677354989] [2024-06-21 20:03:47,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:03:47,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 20:03:47,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:03:47,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 20:03:47,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-21 20:03:47,647 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:03:47,647 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 158 transitions, 1681 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:03:47,647 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:03:47,647 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:03:47,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:03:48,146 INFO L124 PetriNetUnfolderBase]: 465/813 cut-off events. [2024-06-21 20:03:48,147 INFO L125 PetriNetUnfolderBase]: For 37473/37473 co-relation queries the response was YES. [2024-06-21 20:03:48,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5576 conditions, 813 events. 465/813 cut-off events. For 37473/37473 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 3589 event pairs, 79 based on Foata normal form. 2/814 useless extension candidates. Maximal degree in co-relation 5494. Up to 682 conditions per place. [2024-06-21 20:03:48,152 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 130 selfloop transitions, 39 changer transitions 0/171 dead transitions. [2024-06-21 20:03:48,153 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 171 transitions, 2062 flow [2024-06-21 20:03:48,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 20:03:48,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 20:03:48,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 100 transitions. [2024-06-21 20:03:48,154 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3472222222222222 [2024-06-21 20:03:48,154 INFO L175 Difference]: Start difference. First operand has 170 places, 158 transitions, 1681 flow. Second operand 9 states and 100 transitions. [2024-06-21 20:03:48,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 171 transitions, 2062 flow [2024-06-21 20:03:48,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 171 transitions, 1981 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-21 20:03:48,234 INFO L231 Difference]: Finished difference. Result has 171 places, 158 transitions, 1684 flow [2024-06-21 20:03:48,235 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1602, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1684, PETRI_PLACES=171, PETRI_TRANSITIONS=158} [2024-06-21 20:03:48,235 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 140 predicate places. [2024-06-21 20:03:48,235 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 158 transitions, 1684 flow [2024-06-21 20:03:48,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:03:48,236 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:03:48,236 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:03:48,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-21 20:03:48,236 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)] === [2024-06-21 20:03:48,236 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:03:48,237 INFO L85 PathProgramCache]: Analyzing trace with hash 963596804, now seen corresponding path program 5 times [2024-06-21 20:03:48,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:03:48,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733645488] [2024-06-21 20:03:48,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:03:48,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:03:48,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:03:49,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:03:49,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:03:49,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733645488] [2024-06-21 20:03:49,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733645488] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:03:49,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:03:49,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 20:03:49,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884071581] [2024-06-21 20:03:49,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:03:49,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 20:03:49,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:03:49,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 20:03:49,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-21 20:03:49,255 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:03:49,255 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 158 transitions, 1684 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:03:49,255 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:03:49,255 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:03:49,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:03:49,708 INFO L124 PetriNetUnfolderBase]: 471/823 cut-off events. [2024-06-21 20:03:49,708 INFO L125 PetriNetUnfolderBase]: For 39250/39252 co-relation queries the response was YES. [2024-06-21 20:03:49,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5659 conditions, 823 events. 471/823 cut-off events. For 39250/39252 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 3656 event pairs, 78 based on Foata normal form. 2/824 useless extension candidates. Maximal degree in co-relation 5576. Up to 657 conditions per place. [2024-06-21 20:03:49,717 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 127 selfloop transitions, 46 changer transitions 0/175 dead transitions. [2024-06-21 20:03:49,717 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 175 transitions, 2108 flow [2024-06-21 20:03:49,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 20:03:49,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 20:03:49,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 104 transitions. [2024-06-21 20:03:49,718 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3611111111111111 [2024-06-21 20:03:49,718 INFO L175 Difference]: Start difference. First operand has 171 places, 158 transitions, 1684 flow. Second operand 9 states and 104 transitions. [2024-06-21 20:03:49,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 175 transitions, 2108 flow [2024-06-21 20:03:49,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 175 transitions, 2004 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-21 20:03:49,836 INFO L231 Difference]: Finished difference. Result has 173 places, 160 transitions, 1712 flow [2024-06-21 20:03:49,836 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1580, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1712, PETRI_PLACES=173, PETRI_TRANSITIONS=160} [2024-06-21 20:03:49,840 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 142 predicate places. [2024-06-21 20:03:49,841 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 160 transitions, 1712 flow [2024-06-21 20:03:49,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:03:49,841 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:03:49,841 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:03:49,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-21 20:03:49,841 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)] === [2024-06-21 20:03:49,842 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:03:49,842 INFO L85 PathProgramCache]: Analyzing trace with hash 1396648694, now seen corresponding path program 6 times [2024-06-21 20:03:49,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:03:49,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325409560] [2024-06-21 20:03:49,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:03:49,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:03:49,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:03:50,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:03:50,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:03:50,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325409560] [2024-06-21 20:03:50,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325409560] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:03:50,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:03:50,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 20:03:50,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2968173] [2024-06-21 20:03:50,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:03:50,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 20:03:50,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:03:50,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 20:03:50,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-21 20:03:51,066 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:03:51,067 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 160 transitions, 1712 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:03:51,067 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:03:51,067 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:03:51,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:03:51,502 INFO L124 PetriNetUnfolderBase]: 497/865 cut-off events. [2024-06-21 20:03:51,502 INFO L125 PetriNetUnfolderBase]: For 46001/46003 co-relation queries the response was YES. [2024-06-21 20:03:51,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6157 conditions, 865 events. 497/865 cut-off events. For 46001/46003 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 3876 event pairs, 71 based on Foata normal form. 2/866 useless extension candidates. Maximal degree in co-relation 6073. Up to 476 conditions per place. [2024-06-21 20:03:51,511 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 109 selfloop transitions, 77 changer transitions 0/188 dead transitions. [2024-06-21 20:03:51,511 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 188 transitions, 2574 flow [2024-06-21 20:03:51,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 20:03:51,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 20:03:51,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 112 transitions. [2024-06-21 20:03:51,512 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3888888888888889 [2024-06-21 20:03:51,512 INFO L175 Difference]: Start difference. First operand has 173 places, 160 transitions, 1712 flow. Second operand 9 states and 112 transitions. [2024-06-21 20:03:51,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 188 transitions, 2574 flow [2024-06-21 20:03:51,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 188 transitions, 2411 flow, removed 19 selfloop flow, removed 9 redundant places. [2024-06-21 20:03:51,594 INFO L231 Difference]: Finished difference. Result has 173 places, 168 transitions, 1848 flow [2024-06-21 20:03:51,595 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1557, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1848, PETRI_PLACES=173, PETRI_TRANSITIONS=168} [2024-06-21 20:03:51,595 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 142 predicate places. [2024-06-21 20:03:51,595 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 168 transitions, 1848 flow [2024-06-21 20:03:51,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:03:51,595 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:03:51,596 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:03:51,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-21 20:03:51,596 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)] === [2024-06-21 20:03:51,596 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:03:51,596 INFO L85 PathProgramCache]: Analyzing trace with hash 1396642184, now seen corresponding path program 7 times [2024-06-21 20:03:51,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:03:51,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530583921] [2024-06-21 20:03:51,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:03:51,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:03:51,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:03:52,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:03:52,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:03:52,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530583921] [2024-06-21 20:03:52,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530583921] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:03:52,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:03:52,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 20:03:52,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060940385] [2024-06-21 20:03:52,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:03:52,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 20:03:52,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:03:52,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 20:03:52,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-21 20:03:52,577 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:03:52,577 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 168 transitions, 1848 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:03:52,577 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:03:52,577 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:03:52,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:03:53,013 INFO L124 PetriNetUnfolderBase]: 493/859 cut-off events. [2024-06-21 20:03:53,013 INFO L125 PetriNetUnfolderBase]: For 45431/45433 co-relation queries the response was YES. [2024-06-21 20:03:53,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6030 conditions, 859 events. 493/859 cut-off events. For 45431/45433 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 3852 event pairs, 71 based on Foata normal form. 2/860 useless extension candidates. Maximal degree in co-relation 5947. Up to 473 conditions per place. [2024-06-21 20:03:53,020 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 105 selfloop transitions, 78 changer transitions 0/185 dead transitions. [2024-06-21 20:03:53,020 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 185 transitions, 2464 flow [2024-06-21 20:03:53,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 20:03:53,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 20:03:53,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 108 transitions. [2024-06-21 20:03:53,021 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-21 20:03:53,021 INFO L175 Difference]: Start difference. First operand has 173 places, 168 transitions, 1848 flow. Second operand 9 states and 108 transitions. [2024-06-21 20:03:53,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 185 transitions, 2464 flow [2024-06-21 20:03:53,109 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 185 transitions, 2361 flow, removed 31 selfloop flow, removed 3 redundant places. [2024-06-21 20:03:53,111 INFO L231 Difference]: Finished difference. Result has 179 places, 168 transitions, 1906 flow [2024-06-21 20:03:53,112 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1745, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1906, PETRI_PLACES=179, PETRI_TRANSITIONS=168} [2024-06-21 20:03:53,112 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 148 predicate places. [2024-06-21 20:03:53,112 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 168 transitions, 1906 flow [2024-06-21 20:03:53,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:03:53,113 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:03:53,113 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:03:53,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-21 20:03:53,113 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)] === [2024-06-21 20:03:53,113 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:03:53,113 INFO L85 PathProgramCache]: Analyzing trace with hash 331680210, now seen corresponding path program 2 times [2024-06-21 20:03:53,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:03:53,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213053533] [2024-06-21 20:03:53,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:03:53,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:03:53,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:03:54,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:03:54,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:03:54,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213053533] [2024-06-21 20:03:54,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213053533] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:03:54,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:03:54,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 20:03:54,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177132503] [2024-06-21 20:03:54,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:03:54,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 20:03:54,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:03:54,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 20:03:54,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-21 20:03:54,778 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:03:54,779 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 168 transitions, 1906 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:03:54,779 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:03:54,779 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:03:54,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:03:55,325 INFO L124 PetriNetUnfolderBase]: 499/869 cut-off events. [2024-06-21 20:03:55,325 INFO L125 PetriNetUnfolderBase]: For 47156/47158 co-relation queries the response was YES. [2024-06-21 20:03:55,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6223 conditions, 869 events. 499/869 cut-off events. For 47156/47158 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 3916 event pairs, 87 based on Foata normal form. 2/870 useless extension candidates. Maximal degree in co-relation 6138. Up to 748 conditions per place. [2024-06-21 20:03:55,331 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 142 selfloop transitions, 40 changer transitions 0/184 dead transitions. [2024-06-21 20:03:55,331 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 184 transitions, 2354 flow [2024-06-21 20:03:55,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 20:03:55,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 20:03:55,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-21 20:03:55,332 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33125 [2024-06-21 20:03:55,332 INFO L175 Difference]: Start difference. First operand has 179 places, 168 transitions, 1906 flow. Second operand 10 states and 106 transitions. [2024-06-21 20:03:55,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 184 transitions, 2354 flow [2024-06-21 20:03:55,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 184 transitions, 2189 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-21 20:03:55,430 INFO L231 Difference]: Finished difference. Result has 181 places, 170 transitions, 1864 flow [2024-06-21 20:03:55,430 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1741, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1864, PETRI_PLACES=181, PETRI_TRANSITIONS=170} [2024-06-21 20:03:55,431 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 150 predicate places. [2024-06-21 20:03:55,431 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 170 transitions, 1864 flow [2024-06-21 20:03:55,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:03:55,431 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:03:55,431 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:03:55,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-21 20:03:55,431 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)] === [2024-06-21 20:03:55,431 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:03:55,432 INFO L85 PathProgramCache]: Analyzing trace with hash 1790913032, now seen corresponding path program 8 times [2024-06-21 20:03:55,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:03:55,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52753796] [2024-06-21 20:03:55,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:03:55,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:03:55,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:03:56,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:03:56,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:03:56,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52753796] [2024-06-21 20:03:56,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52753796] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:03:56,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:03:56,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 20:03:56,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858074854] [2024-06-21 20:03:56,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:03:56,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 20:03:56,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:03:56,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 20:03:56,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-21 20:03:56,300 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:03:56,301 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 170 transitions, 1864 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:03:56,301 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:03:56,301 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:03:56,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:03:56,705 INFO L124 PetriNetUnfolderBase]: 511/889 cut-off events. [2024-06-21 20:03:56,706 INFO L125 PetriNetUnfolderBase]: For 48752/48754 co-relation queries the response was YES. [2024-06-21 20:03:56,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6254 conditions, 889 events. 511/889 cut-off events. For 48752/48754 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 4036 event pairs, 82 based on Foata normal form. 2/890 useless extension candidates. Maximal degree in co-relation 6168. Up to 730 conditions per place. [2024-06-21 20:03:56,717 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 143 selfloop transitions, 44 changer transitions 0/189 dead transitions. [2024-06-21 20:03:56,717 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 189 transitions, 2336 flow [2024-06-21 20:03:56,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 20:03:56,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 20:03:56,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 103 transitions. [2024-06-21 20:03:56,718 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3576388888888889 [2024-06-21 20:03:56,718 INFO L175 Difference]: Start difference. First operand has 181 places, 170 transitions, 1864 flow. Second operand 9 states and 103 transitions. [2024-06-21 20:03:56,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 189 transitions, 2336 flow [2024-06-21 20:03:56,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 189 transitions, 2235 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-21 20:03:56,817 INFO L231 Difference]: Finished difference. Result has 183 places, 174 transitions, 1918 flow [2024-06-21 20:03:56,817 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1763, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1918, PETRI_PLACES=183, PETRI_TRANSITIONS=174} [2024-06-21 20:03:56,818 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 152 predicate places. [2024-06-21 20:03:56,818 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 174 transitions, 1918 flow [2024-06-21 20:03:56,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:03:56,818 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:03:56,818 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:03:56,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-21 20:03:56,818 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)] === [2024-06-21 20:03:56,818 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:03:56,818 INFO L85 PathProgramCache]: Analyzing trace with hash 616771152, now seen corresponding path program 9 times [2024-06-21 20:03:56,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:03:56,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96215382] [2024-06-21 20:03:56,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:03:56,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:03:56,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:03:57,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:03:57,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:03:57,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96215382] [2024-06-21 20:03:57,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96215382] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:03:57,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:03:57,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 20:03:57,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491954179] [2024-06-21 20:03:57,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:03:57,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 20:03:57,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:03:57,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 20:03:57,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-21 20:03:57,702 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:03:57,702 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 174 transitions, 1918 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:03:57,702 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:03:57,702 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:03:57,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:03:58,013 INFO L124 PetriNetUnfolderBase]: 507/882 cut-off events. [2024-06-21 20:03:58,013 INFO L125 PetriNetUnfolderBase]: For 47970/47970 co-relation queries the response was YES. [2024-06-21 20:03:58,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6175 conditions, 882 events. 507/882 cut-off events. For 47970/47970 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 3997 event pairs, 117 based on Foata normal form. 2/883 useless extension candidates. Maximal degree in co-relation 6087. Up to 851 conditions per place. [2024-06-21 20:03:58,020 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 167 selfloop transitions, 15 changer transitions 0/184 dead transitions. [2024-06-21 20:03:58,020 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 184 transitions, 2310 flow [2024-06-21 20:03:58,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 20:03:58,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 20:03:58,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 90 transitions. [2024-06-21 20:03:58,021 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3125 [2024-06-21 20:03:58,021 INFO L175 Difference]: Start difference. First operand has 183 places, 174 transitions, 1918 flow. Second operand 9 states and 90 transitions. [2024-06-21 20:03:58,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 184 transitions, 2310 flow [2024-06-21 20:03:58,114 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 184 transitions, 2183 flow, removed 24 selfloop flow, removed 6 redundant places. [2024-06-21 20:03:58,116 INFO L231 Difference]: Finished difference. Result has 186 places, 174 transitions, 1826 flow [2024-06-21 20:03:58,116 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1791, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1826, PETRI_PLACES=186, PETRI_TRANSITIONS=174} [2024-06-21 20:03:58,117 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 155 predicate places. [2024-06-21 20:03:58,117 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 174 transitions, 1826 flow [2024-06-21 20:03:58,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:03:58,117 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:03:58,117 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:03:58,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-21 20:03:58,117 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)] === [2024-06-21 20:03:58,117 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:03:58,118 INFO L85 PathProgramCache]: Analyzing trace with hash 2035307044, now seen corresponding path program 3 times [2024-06-21 20:03:58,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:03:58,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667790379] [2024-06-21 20:03:58,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:03:58,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:03:58,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:03:59,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:03:59,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:03:59,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667790379] [2024-06-21 20:03:59,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667790379] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:03:59,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:03:59,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 20:03:59,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10691860] [2024-06-21 20:03:59,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:03:59,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 20:03:59,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:03:59,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 20:03:59,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-21 20:03:59,525 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:03:59,525 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 174 transitions, 1826 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:03:59,525 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:03:59,525 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:03:59,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:03:59,960 INFO L124 PetriNetUnfolderBase]: 513/892 cut-off events. [2024-06-21 20:03:59,960 INFO L125 PetriNetUnfolderBase]: For 49292/49292 co-relation queries the response was YES. [2024-06-21 20:03:59,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6149 conditions, 892 events. 513/892 cut-off events. For 49292/49292 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 4044 event pairs, 100 based on Foata normal form. 2/893 useless extension candidates. Maximal degree in co-relation 6060. Up to 802 conditions per place. [2024-06-21 20:03:59,966 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 159 selfloop transitions, 28 changer transitions 0/189 dead transitions. [2024-06-21 20:03:59,966 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 189 transitions, 2282 flow [2024-06-21 20:03:59,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 20:03:59,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 20:03:59,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 104 transitions. [2024-06-21 20:03:59,967 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.325 [2024-06-21 20:03:59,967 INFO L175 Difference]: Start difference. First operand has 186 places, 174 transitions, 1826 flow. Second operand 10 states and 104 transitions. [2024-06-21 20:03:59,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 189 transitions, 2282 flow [2024-06-21 20:04:00,053 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 189 transitions, 2247 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-21 20:04:00,056 INFO L231 Difference]: Finished difference. Result has 188 places, 176 transitions, 1894 flow [2024-06-21 20:04:00,056 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1791, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1894, PETRI_PLACES=188, PETRI_TRANSITIONS=176} [2024-06-21 20:04:00,056 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 157 predicate places. [2024-06-21 20:04:00,056 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 176 transitions, 1894 flow [2024-06-21 20:04:00,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:04:00,057 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:04:00,057 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:04:00,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-21 20:04:00,057 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)] === [2024-06-21 20:04:00,057 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:04:00,057 INFO L85 PathProgramCache]: Analyzing trace with hash 2028811614, now seen corresponding path program 2 times [2024-06-21 20:04:00,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:04:00,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901013595] [2024-06-21 20:04:00,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:04:00,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:04:00,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:04:01,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:04:01,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:04:01,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901013595] [2024-06-21 20:04:01,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901013595] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:04:01,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:04:01,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 20:04:01,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324254406] [2024-06-21 20:04:01,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:04:01,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 20:04:01,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:04:01,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 20:04:01,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-21 20:04:01,486 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:04:01,487 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 176 transitions, 1894 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:04:01,487 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:04:01,487 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:04:01,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:04:01,928 INFO L124 PetriNetUnfolderBase]: 511/890 cut-off events. [2024-06-21 20:04:01,928 INFO L125 PetriNetUnfolderBase]: For 48334/48336 co-relation queries the response was YES. [2024-06-21 20:04:01,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6152 conditions, 890 events. 511/890 cut-off events. For 48334/48336 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 4049 event pairs, 100 based on Foata normal form. 1/890 useless extension candidates. Maximal degree in co-relation 6062. Up to 798 conditions per place. [2024-06-21 20:04:01,934 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 156 selfloop transitions, 31 changer transitions 0/189 dead transitions. [2024-06-21 20:04:01,934 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 189 transitions, 2347 flow [2024-06-21 20:04:01,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 20:04:01,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 20:04:01,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 96 transitions. [2024-06-21 20:04:01,935 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-21 20:04:01,935 INFO L175 Difference]: Start difference. First operand has 188 places, 176 transitions, 1894 flow. Second operand 9 states and 96 transitions. [2024-06-21 20:04:01,935 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 189 transitions, 2347 flow [2024-06-21 20:04:02,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 189 transitions, 2266 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-21 20:04:02,040 INFO L231 Difference]: Finished difference. Result has 189 places, 178 transitions, 1930 flow [2024-06-21 20:04:02,040 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1813, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1930, PETRI_PLACES=189, PETRI_TRANSITIONS=178} [2024-06-21 20:04:02,040 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 158 predicate places. [2024-06-21 20:04:02,041 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 178 transitions, 1930 flow [2024-06-21 20:04:02,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:04:02,041 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:04:02,041 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:04:02,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-21 20:04:02,041 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)] === [2024-06-21 20:04:02,041 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:04:02,041 INFO L85 PathProgramCache]: Analyzing trace with hash 2028811366, now seen corresponding path program 10 times [2024-06-21 20:04:02,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:04:02,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276974450] [2024-06-21 20:04:02,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:04:02,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:04:02,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:04:02,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:04:02,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:04:02,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276974450] [2024-06-21 20:04:02,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276974450] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:04:02,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:04:02,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 20:04:02,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987162966] [2024-06-21 20:04:02,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:04:02,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 20:04:02,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:04:02,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 20:04:02,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-21 20:04:03,048 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:04:03,049 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 178 transitions, 1930 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:04:03,049 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:04:03,049 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:04:03,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:04:03,429 INFO L124 PetriNetUnfolderBase]: 517/900 cut-off events. [2024-06-21 20:04:03,429 INFO L125 PetriNetUnfolderBase]: For 51584/51586 co-relation queries the response was YES. [2024-06-21 20:04:03,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6255 conditions, 900 events. 517/900 cut-off events. For 51584/51586 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 4095 event pairs, 81 based on Foata normal form. 2/901 useless extension candidates. Maximal degree in co-relation 6164. Up to 696 conditions per place. [2024-06-21 20:04:03,435 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 139 selfloop transitions, 56 changer transitions 0/197 dead transitions. [2024-06-21 20:04:03,436 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 197 transitions, 2526 flow [2024-06-21 20:04:03,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 20:04:03,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 20:04:03,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 107 transitions. [2024-06-21 20:04:03,438 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3715277777777778 [2024-06-21 20:04:03,438 INFO L175 Difference]: Start difference. First operand has 189 places, 178 transitions, 1930 flow. Second operand 9 states and 107 transitions. [2024-06-21 20:04:03,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 197 transitions, 2526 flow [2024-06-21 20:04:03,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 197 transitions, 2438 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-21 20:04:03,538 INFO L231 Difference]: Finished difference. Result has 191 places, 180 transitions, 2002 flow [2024-06-21 20:04:03,538 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1842, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2002, PETRI_PLACES=191, PETRI_TRANSITIONS=180} [2024-06-21 20:04:03,539 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 160 predicate places. [2024-06-21 20:04:03,539 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 180 transitions, 2002 flow [2024-06-21 20:04:03,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:04:03,539 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:04:03,539 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:04:03,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-21 20:04:03,539 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)] === [2024-06-21 20:04:03,540 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:04:03,540 INFO L85 PathProgramCache]: Analyzing trace with hash 1681988132, now seen corresponding path program 4 times [2024-06-21 20:04:03,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:04:03,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837747084] [2024-06-21 20:04:03,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:04:03,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:04:03,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:04:04,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:04:04,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:04:04,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837747084] [2024-06-21 20:04:04,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837747084] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:04:04,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:04:04,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 20:04:04,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214220161] [2024-06-21 20:04:04,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:04:04,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 20:04:04,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:04:04,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 20:04:04,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-21 20:04:04,726 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:04:04,726 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 180 transitions, 2002 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:04:04,726 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:04:04,726 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:04:04,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:04:05,153 INFO L124 PetriNetUnfolderBase]: 518/902 cut-off events. [2024-06-21 20:04:05,154 INFO L125 PetriNetUnfolderBase]: For 52099/52101 co-relation queries the response was YES. [2024-06-21 20:04:05,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6331 conditions, 902 events. 518/902 cut-off events. For 52099/52101 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 4125 event pairs, 85 based on Foata normal form. 2/903 useless extension candidates. Maximal degree in co-relation 6239. Up to 655 conditions per place. [2024-06-21 20:04:05,191 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 129 selfloop transitions, 66 changer transitions 0/197 dead transitions. [2024-06-21 20:04:05,191 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 197 transitions, 2600 flow [2024-06-21 20:04:05,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 20:04:05,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 20:04:05,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-21 20:04:05,192 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35 [2024-06-21 20:04:05,192 INFO L175 Difference]: Start difference. First operand has 191 places, 180 transitions, 2002 flow. Second operand 10 states and 112 transitions. [2024-06-21 20:04:05,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 197 transitions, 2600 flow [2024-06-21 20:04:05,275 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 197 transitions, 2388 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-21 20:04:05,279 INFO L231 Difference]: Finished difference. Result has 193 places, 182 transitions, 1971 flow [2024-06-21 20:04:05,279 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1790, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1971, PETRI_PLACES=193, PETRI_TRANSITIONS=182} [2024-06-21 20:04:05,279 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 162 predicate places. [2024-06-21 20:04:05,279 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 182 transitions, 1971 flow [2024-06-21 20:04:05,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:04:05,280 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:04:05,280 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:04:05,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-21 20:04:05,280 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)] === [2024-06-21 20:04:05,281 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:04:05,281 INFO L85 PathProgramCache]: Analyzing trace with hash 963423824, now seen corresponding path program 11 times [2024-06-21 20:04:05,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:04:05,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687904605] [2024-06-21 20:04:05,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:04:05,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:04:05,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:04:06,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:04:06,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:04:06,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687904605] [2024-06-21 20:04:06,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687904605] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:04:06,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:04:06,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 20:04:06,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577959033] [2024-06-21 20:04:06,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:04:06,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 20:04:06,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:04:06,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 20:04:06,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-21 20:04:06,186 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:04:06,186 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 182 transitions, 1971 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:04:06,186 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:04:06,186 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:04:06,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:04:06,567 INFO L124 PetriNetUnfolderBase]: 514/896 cut-off events. [2024-06-21 20:04:06,567 INFO L125 PetriNetUnfolderBase]: For 50156/50158 co-relation queries the response was YES. [2024-06-21 20:04:06,571 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6086 conditions, 896 events. 514/896 cut-off events. For 50156/50158 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 4094 event pairs, 91 based on Foata normal form. 2/897 useless extension candidates. Maximal degree in co-relation 5994. Up to 755 conditions per place. [2024-06-21 20:04:06,573 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 154 selfloop transitions, 39 changer transitions 0/195 dead transitions. [2024-06-21 20:04:06,573 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 195 transitions, 2395 flow [2024-06-21 20:04:06,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 20:04:06,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 20:04:06,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 100 transitions. [2024-06-21 20:04:06,574 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3472222222222222 [2024-06-21 20:04:06,574 INFO L175 Difference]: Start difference. First operand has 193 places, 182 transitions, 1971 flow. Second operand 9 states and 100 transitions. [2024-06-21 20:04:06,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 195 transitions, 2395 flow [2024-06-21 20:04:06,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 195 transitions, 2209 flow, removed 27 selfloop flow, removed 8 redundant places. [2024-06-21 20:04:06,669 INFO L231 Difference]: Finished difference. Result has 194 places, 182 transitions, 1868 flow [2024-06-21 20:04:06,669 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1785, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1868, PETRI_PLACES=194, PETRI_TRANSITIONS=182} [2024-06-21 20:04:06,669 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 163 predicate places. [2024-06-21 20:04:06,669 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 182 transitions, 1868 flow [2024-06-21 20:04:06,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:04:06,670 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:04:06,670 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:04:06,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-21 20:04:06,670 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)] === [2024-06-21 20:04:06,670 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:04:06,671 INFO L85 PathProgramCache]: Analyzing trace with hash 1692107462, now seen corresponding path program 5 times [2024-06-21 20:04:06,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:04:06,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432254135] [2024-06-21 20:04:06,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:04:06,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:04:06,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:04:07,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:04:07,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:04:07,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432254135] [2024-06-21 20:04:07,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432254135] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:04:07,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:04:07,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 20:04:07,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562372274] [2024-06-21 20:04:07,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:04:07,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 20:04:07,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:04:07,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 20:04:07,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-21 20:04:07,734 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:04:07,734 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 182 transitions, 1868 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:04:07,734 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:04:07,734 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:04:07,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:04:08,064 INFO L124 PetriNetUnfolderBase]: 510/889 cut-off events. [2024-06-21 20:04:08,064 INFO L125 PetriNetUnfolderBase]: For 48119/48119 co-relation queries the response was YES. [2024-06-21 20:04:08,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5830 conditions, 889 events. 510/889 cut-off events. For 48119/48119 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 4058 event pairs, 121 based on Foata normal form. 2/890 useless extension candidates. Maximal degree in co-relation 5737. Up to 844 conditions per place. [2024-06-21 20:04:08,074 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 172 selfloop transitions, 19 changer transitions 0/193 dead transitions. [2024-06-21 20:04:08,074 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 193 transitions, 2282 flow [2024-06-21 20:04:08,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 20:04:08,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 20:04:08,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 100 transitions. [2024-06-21 20:04:08,075 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3125 [2024-06-21 20:04:08,076 INFO L175 Difference]: Start difference. First operand has 194 places, 182 transitions, 1868 flow. Second operand 10 states and 100 transitions. [2024-06-21 20:04:08,076 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 193 transitions, 2282 flow [2024-06-21 20:04:08,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 193 transitions, 2174 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-21 20:04:08,186 INFO L231 Difference]: Finished difference. Result has 196 places, 182 transitions, 1803 flow [2024-06-21 20:04:08,187 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1760, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1803, PETRI_PLACES=196, PETRI_TRANSITIONS=182} [2024-06-21 20:04:08,187 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 165 predicate places. [2024-06-21 20:04:08,187 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 182 transitions, 1803 flow [2024-06-21 20:04:08,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:04:08,187 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:04:08,188 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:04:08,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-21 20:04:08,188 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)] === [2024-06-21 20:04:08,188 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:04:08,188 INFO L85 PathProgramCache]: Analyzing trace with hash 632535685, now seen corresponding path program 1 times [2024-06-21 20:04:08,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:04:08,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606899245] [2024-06-21 20:04:08,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:04:08,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:04:08,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:04:09,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:04:09,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:04:09,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606899245] [2024-06-21 20:04:09,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606899245] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:04:09,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:04:09,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 20:04:09,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002786839] [2024-06-21 20:04:09,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:04:09,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 20:04:09,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:04:09,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 20:04:09,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-21 20:04:09,399 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:04:09,399 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 182 transitions, 1803 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 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) [2024-06-21 20:04:09,399 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:04:09,399 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:04:09,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:04:09,837 INFO L124 PetriNetUnfolderBase]: 514/897 cut-off events. [2024-06-21 20:04:09,837 INFO L125 PetriNetUnfolderBase]: For 47935/47935 co-relation queries the response was YES. [2024-06-21 20:04:09,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5790 conditions, 897 events. 514/897 cut-off events. For 47935/47935 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 4094 event pairs, 86 based on Foata normal form. 2/898 useless extension candidates. Maximal degree in co-relation 5696. Up to 782 conditions per place. [2024-06-21 20:04:09,843 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 163 selfloop transitions, 33 changer transitions 0/198 dead transitions. [2024-06-21 20:04:09,843 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 198 transitions, 2249 flow [2024-06-21 20:04:09,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 20:04:09,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 20:04:09,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-06-21 20:04:09,844 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3402777777777778 [2024-06-21 20:04:09,844 INFO L175 Difference]: Start difference. First operand has 196 places, 182 transitions, 1803 flow. Second operand 9 states and 98 transitions. [2024-06-21 20:04:09,844 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 198 transitions, 2249 flow [2024-06-21 20:04:09,957 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 198 transitions, 2211 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-21 20:04:09,959 INFO L231 Difference]: Finished difference. Result has 196 places, 183 transitions, 1854 flow [2024-06-21 20:04:09,960 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1765, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1854, PETRI_PLACES=196, PETRI_TRANSITIONS=183} [2024-06-21 20:04:09,960 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 165 predicate places. [2024-06-21 20:04:09,960 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 183 transitions, 1854 flow [2024-06-21 20:04:09,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 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) [2024-06-21 20:04:09,960 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:04:09,960 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:04:09,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-21 20:04:09,960 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)] === [2024-06-21 20:04:09,961 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:04:09,961 INFO L85 PathProgramCache]: Analyzing trace with hash 632531965, now seen corresponding path program 2 times [2024-06-21 20:04:09,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:04:09,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319125454] [2024-06-21 20:04:09,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:04:09,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:04:09,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:04:10,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:04:10,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:04:10,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319125454] [2024-06-21 20:04:10,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319125454] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:04:10,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:04:10,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 20:04:10,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512311987] [2024-06-21 20:04:10,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:04:10,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 20:04:10,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:04:10,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 20:04:10,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-21 20:04:10,979 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:04:10,979 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 183 transitions, 1854 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:04:10,980 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:04:10,980 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:04:10,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:04:11,357 INFO L124 PetriNetUnfolderBase]: 518/905 cut-off events. [2024-06-21 20:04:11,357 INFO L125 PetriNetUnfolderBase]: For 49799/49799 co-relation queries the response was YES. [2024-06-21 20:04:11,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5911 conditions, 905 events. 518/905 cut-off events. For 49799/49799 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 4147 event pairs, 86 based on Foata normal form. 2/906 useless extension candidates. Maximal degree in co-relation 5816. Up to 804 conditions per place. [2024-06-21 20:04:11,365 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 171 selfloop transitions, 26 changer transitions 0/199 dead transitions. [2024-06-21 20:04:11,365 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 199 transitions, 2302 flow [2024-06-21 20:04:11,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 20:04:11,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 20:04:11,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-21 20:04:11,366 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3368055555555556 [2024-06-21 20:04:11,366 INFO L175 Difference]: Start difference. First operand has 196 places, 183 transitions, 1854 flow. Second operand 9 states and 97 transitions. [2024-06-21 20:04:11,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 199 transitions, 2302 flow [2024-06-21 20:04:11,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 199 transitions, 2229 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-21 20:04:11,468 INFO L231 Difference]: Finished difference. Result has 198 places, 184 transitions, 1855 flow [2024-06-21 20:04:11,468 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1781, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1855, PETRI_PLACES=198, PETRI_TRANSITIONS=184} [2024-06-21 20:04:11,469 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 167 predicate places. [2024-06-21 20:04:11,469 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 184 transitions, 1855 flow [2024-06-21 20:04:11,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:04:11,469 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:04:11,469 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:04:11,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-21 20:04:11,469 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)] === [2024-06-21 20:04:11,470 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:04:11,470 INFO L85 PathProgramCache]: Analyzing trace with hash -1523616895, now seen corresponding path program 3 times [2024-06-21 20:04:11,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:04:11,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369816651] [2024-06-21 20:04:11,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:04:11,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:04:11,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:04:12,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:04:12,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:04:12,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369816651] [2024-06-21 20:04:12,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369816651] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:04:12,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:04:12,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 20:04:12,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780785337] [2024-06-21 20:04:12,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:04:12,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 20:04:12,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:04:12,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 20:04:12,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-21 20:04:12,564 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:04:12,565 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 184 transitions, 1855 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 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) [2024-06-21 20:04:12,565 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:04:12,565 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:04:12,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:04:12,966 INFO L124 PetriNetUnfolderBase]: 535/940 cut-off events. [2024-06-21 20:04:12,966 INFO L125 PetriNetUnfolderBase]: For 51629/51629 co-relation queries the response was YES. [2024-06-21 20:04:12,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6038 conditions, 940 events. 535/940 cut-off events. For 51629/51629 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 4411 event pairs, 89 based on Foata normal form. 2/941 useless extension candidates. Maximal degree in co-relation 5942. Up to 834 conditions per place. [2024-06-21 20:04:12,974 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 183 selfloop transitions, 25 changer transitions 0/210 dead transitions. [2024-06-21 20:04:12,974 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 210 transitions, 2382 flow [2024-06-21 20:04:12,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:04:12,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:04:12,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 117 transitions. [2024-06-21 20:04:12,976 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33238636363636365 [2024-06-21 20:04:12,976 INFO L175 Difference]: Start difference. First operand has 198 places, 184 transitions, 1855 flow. Second operand 11 states and 117 transitions. [2024-06-21 20:04:12,976 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 210 transitions, 2382 flow [2024-06-21 20:04:13,068 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 210 transitions, 2315 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-21 20:04:13,071 INFO L231 Difference]: Finished difference. Result has 205 places, 189 transitions, 1906 flow [2024-06-21 20:04:13,072 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1791, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1906, PETRI_PLACES=205, PETRI_TRANSITIONS=189} [2024-06-21 20:04:13,072 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 174 predicate places. [2024-06-21 20:04:13,072 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 189 transitions, 1906 flow [2024-06-21 20:04:13,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 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) [2024-06-21 20:04:13,072 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:04:13,073 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:04:13,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-21 20:04:13,073 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)] === [2024-06-21 20:04:13,073 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:04:13,073 INFO L85 PathProgramCache]: Analyzing trace with hash -1435047260, now seen corresponding path program 1 times [2024-06-21 20:04:13,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:04:13,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177373074] [2024-06-21 20:04:13,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:04:13,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:04:13,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:04:14,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:04:14,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:04:14,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177373074] [2024-06-21 20:04:14,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177373074] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:04:14,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:04:14,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 20:04:14,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137134814] [2024-06-21 20:04:14,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:04:14,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 20:04:14,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:04:14,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 20:04:14,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-21 20:04:14,213 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:04:14,214 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 189 transitions, 1906 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 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) [2024-06-21 20:04:14,214 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:04:14,214 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:04:14,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:04:14,622 INFO L124 PetriNetUnfolderBase]: 533/937 cut-off events. [2024-06-21 20:04:14,623 INFO L125 PetriNetUnfolderBase]: For 49617/49617 co-relation queries the response was YES. [2024-06-21 20:04:14,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6002 conditions, 937 events. 533/937 cut-off events. For 49617/49617 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 4427 event pairs, 90 based on Foata normal form. 1/937 useless extension candidates. Maximal degree in co-relation 5902. Up to 817 conditions per place. [2024-06-21 20:04:14,630 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 165 selfloop transitions, 37 changer transitions 0/204 dead transitions. [2024-06-21 20:04:14,630 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 204 transitions, 2352 flow [2024-06-21 20:04:14,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 20:04:14,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 20:04:14,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 99 transitions. [2024-06-21 20:04:14,631 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-21 20:04:14,631 INFO L175 Difference]: Start difference. First operand has 205 places, 189 transitions, 1906 flow. Second operand 9 states and 99 transitions. [2024-06-21 20:04:14,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 204 transitions, 2352 flow [2024-06-21 20:04:14,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 204 transitions, 2269 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-06-21 20:04:14,732 INFO L231 Difference]: Finished difference. Result has 208 places, 189 transitions, 1907 flow [2024-06-21 20:04:14,732 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1823, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1907, PETRI_PLACES=208, PETRI_TRANSITIONS=189} [2024-06-21 20:04:14,733 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 177 predicate places. [2024-06-21 20:04:14,733 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 189 transitions, 1907 flow [2024-06-21 20:04:14,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 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) [2024-06-21 20:04:14,733 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:04:14,733 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:04:14,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-21 20:04:14,733 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)] === [2024-06-21 20:04:14,733 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:04:14,733 INFO L85 PathProgramCache]: Analyzing trace with hash -255304339, now seen corresponding path program 1 times [2024-06-21 20:04:14,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:04:14,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321233237] [2024-06-21 20:04:14,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:04:14,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:04:14,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:04:15,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:04:15,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:04:15,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321233237] [2024-06-21 20:04:15,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321233237] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:04:15,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:04:15,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 20:04:15,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598573587] [2024-06-21 20:04:15,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:04:15,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 20:04:15,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:04:15,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 20:04:15,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-21 20:04:16,067 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:04:16,067 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 189 transitions, 1907 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 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) [2024-06-21 20:04:16,067 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:04:16,067 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:04:16,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:04:16,532 INFO L124 PetriNetUnfolderBase]: 539/947 cut-off events. [2024-06-21 20:04:16,533 INFO L125 PetriNetUnfolderBase]: For 52546/52546 co-relation queries the response was YES. [2024-06-21 20:04:16,540 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6107 conditions, 947 events. 539/947 cut-off events. For 52546/52546 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 4469 event pairs, 81 based on Foata normal form. 2/948 useless extension candidates. Maximal degree in co-relation 6006. Up to 836 conditions per place. [2024-06-21 20:04:16,543 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 176 selfloop transitions, 30 changer transitions 0/208 dead transitions. [2024-06-21 20:04:16,544 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 208 transitions, 2403 flow [2024-06-21 20:04:16,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 20:04:16,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 20:04:16,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-21 20:04:16,549 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3375 [2024-06-21 20:04:16,549 INFO L175 Difference]: Start difference. First operand has 208 places, 189 transitions, 1907 flow. Second operand 10 states and 108 transitions. [2024-06-21 20:04:16,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 208 transitions, 2403 flow [2024-06-21 20:04:16,651 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 208 transitions, 2301 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-21 20:04:16,653 INFO L231 Difference]: Finished difference. Result has 210 places, 191 transitions, 1910 flow [2024-06-21 20:04:16,654 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1805, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1910, PETRI_PLACES=210, PETRI_TRANSITIONS=191} [2024-06-21 20:04:16,654 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 179 predicate places. [2024-06-21 20:04:16,654 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 191 transitions, 1910 flow [2024-06-21 20:04:16,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 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) [2024-06-21 20:04:16,654 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:04:16,654 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:04:16,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-21 20:04:16,654 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)] === [2024-06-21 20:04:16,655 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:04:16,655 INFO L85 PathProgramCache]: Analyzing trace with hash -1713531, now seen corresponding path program 4 times [2024-06-21 20:04:16,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:04:16,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070462610] [2024-06-21 20:04:16,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:04:16,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:04:16,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:04:17,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:04:17,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:04:17,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070462610] [2024-06-21 20:04:17,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070462610] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:04:17,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:04:17,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 20:04:17,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144040144] [2024-06-21 20:04:17,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:04:17,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 20:04:17,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:04:17,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 20:04:17,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-21 20:04:17,949 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:04:17,949 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 191 transitions, 1910 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 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) [2024-06-21 20:04:17,949 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:04:17,949 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:04:17,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:04:18,391 INFO L124 PetriNetUnfolderBase]: 543/955 cut-off events. [2024-06-21 20:04:18,391 INFO L125 PetriNetUnfolderBase]: For 54491/54491 co-relation queries the response was YES. [2024-06-21 20:04:18,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6165 conditions, 955 events. 543/955 cut-off events. For 54491/54491 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 4533 event pairs, 78 based on Foata normal form. 2/956 useless extension candidates. Maximal degree in co-relation 6063. Up to 807 conditions per place. [2024-06-21 20:04:18,399 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 163 selfloop transitions, 41 changer transitions 0/206 dead transitions. [2024-06-21 20:04:18,399 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 206 transitions, 2376 flow [2024-06-21 20:04:18,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 20:04:18,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 20:04:18,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 101 transitions. [2024-06-21 20:04:18,400 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3506944444444444 [2024-06-21 20:04:18,400 INFO L175 Difference]: Start difference. First operand has 210 places, 191 transitions, 1910 flow. Second operand 9 states and 101 transitions. [2024-06-21 20:04:18,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 206 transitions, 2376 flow [2024-06-21 20:04:18,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 206 transitions, 2287 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-21 20:04:18,517 INFO L231 Difference]: Finished difference. Result has 211 places, 192 transitions, 1930 flow [2024-06-21 20:04:18,518 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1821, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1930, PETRI_PLACES=211, PETRI_TRANSITIONS=192} [2024-06-21 20:04:18,518 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 180 predicate places. [2024-06-21 20:04:18,518 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 192 transitions, 1930 flow [2024-06-21 20:04:18,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 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) [2024-06-21 20:04:18,518 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:04:18,518 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:04:18,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-21 20:04:18,518 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)] === [2024-06-21 20:04:18,519 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:04:18,519 INFO L85 PathProgramCache]: Analyzing trace with hash -1717251, now seen corresponding path program 5 times [2024-06-21 20:04:18,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:04:18,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589866707] [2024-06-21 20:04:18,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:04:18,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:04:18,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:04:19,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:04:19,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:04:19,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589866707] [2024-06-21 20:04:19,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589866707] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:04:19,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:04:19,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 20:04:19,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723754816] [2024-06-21 20:04:19,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:04:19,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 20:04:19,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:04:19,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 20:04:19,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-21 20:04:19,617 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:04:19,618 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 192 transitions, 1930 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 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) [2024-06-21 20:04:19,618 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:04:19,618 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:04:19,618 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:04:20,051 INFO L124 PetriNetUnfolderBase]: 547/963 cut-off events. [2024-06-21 20:04:20,051 INFO L125 PetriNetUnfolderBase]: For 57591/57591 co-relation queries the response was YES. [2024-06-21 20:04:20,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6237 conditions, 963 events. 547/963 cut-off events. For 57591/57591 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 4583 event pairs, 76 based on Foata normal form. 2/964 useless extension candidates. Maximal degree in co-relation 6134. Up to 823 conditions per place. [2024-06-21 20:04:20,058 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 167 selfloop transitions, 38 changer transitions 0/207 dead transitions. [2024-06-21 20:04:20,058 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 207 transitions, 2398 flow [2024-06-21 20:04:20,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 20:04:20,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 20:04:20,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 100 transitions. [2024-06-21 20:04:20,059 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3472222222222222 [2024-06-21 20:04:20,059 INFO L175 Difference]: Start difference. First operand has 211 places, 192 transitions, 1930 flow. Second operand 9 states and 100 transitions. [2024-06-21 20:04:20,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 207 transitions, 2398 flow [2024-06-21 20:04:20,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 207 transitions, 2301 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-21 20:04:20,192 INFO L231 Difference]: Finished difference. Result has 213 places, 193 transitions, 1937 flow [2024-06-21 20:04:20,192 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1833, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1937, PETRI_PLACES=213, PETRI_TRANSITIONS=193} [2024-06-21 20:04:20,192 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 182 predicate places. [2024-06-21 20:04:20,193 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 193 transitions, 1937 flow [2024-06-21 20:04:20,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 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) [2024-06-21 20:04:20,193 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:04:20,193 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:04:20,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-21 20:04:20,193 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)] === [2024-06-21 20:04:20,194 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:04:20,194 INFO L85 PathProgramCache]: Analyzing trace with hash 4008480, now seen corresponding path program 1 times [2024-06-21 20:04:20,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:04:20,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179203850] [2024-06-21 20:04:20,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:04:20,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:04:20,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:04:22,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:04:22,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:04:22,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179203850] [2024-06-21 20:04:22,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179203850] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:04:22,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:04:22,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 20:04:22,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417271314] [2024-06-21 20:04:22,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:04:22,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 20:04:22,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:04:22,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 20:04:22,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-21 20:04:22,948 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:04:22,949 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 193 transitions, 1937 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 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) [2024-06-21 20:04:22,949 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:04:22,949 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:04:22,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:04:23,440 INFO L124 PetriNetUnfolderBase]: 550/968 cut-off events. [2024-06-21 20:04:23,440 INFO L125 PetriNetUnfolderBase]: For 57364/57364 co-relation queries the response was YES. [2024-06-21 20:04:23,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6285 conditions, 968 events. 550/968 cut-off events. For 57364/57364 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 4626 event pairs, 97 based on Foata normal form. 1/968 useless extension candidates. Maximal degree in co-relation 6181. Up to 851 conditions per place. [2024-06-21 20:04:23,448 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 167 selfloop transitions, 41 changer transitions 0/210 dead transitions. [2024-06-21 20:04:23,448 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 210 transitions, 2447 flow [2024-06-21 20:04:23,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 20:04:23,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 20:04:23,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-21 20:04:23,449 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.334375 [2024-06-21 20:04:23,449 INFO L175 Difference]: Start difference. First operand has 213 places, 193 transitions, 1937 flow. Second operand 10 states and 107 transitions. [2024-06-21 20:04:23,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 210 transitions, 2447 flow [2024-06-21 20:04:23,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 210 transitions, 2353 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-21 20:04:23,558 INFO L231 Difference]: Finished difference. Result has 216 places, 195 transitions, 1981 flow [2024-06-21 20:04:23,558 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1843, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1981, PETRI_PLACES=216, PETRI_TRANSITIONS=195} [2024-06-21 20:04:23,559 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 185 predicate places. [2024-06-21 20:04:23,559 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 195 transitions, 1981 flow [2024-06-21 20:04:23,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 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) [2024-06-21 20:04:23,559 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:04:23,559 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:04:23,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-21 20:04:23,559 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)] === [2024-06-21 20:04:23,559 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:04:23,559 INFO L85 PathProgramCache]: Analyzing trace with hash 3792999, now seen corresponding path program 6 times [2024-06-21 20:04:23,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:04:23,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438223439] [2024-06-21 20:04:23,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:04:23,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:04:23,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:04:24,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:04:24,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:04:24,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438223439] [2024-06-21 20:04:24,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438223439] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:04:24,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:04:24,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 20:04:24,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798241156] [2024-06-21 20:04:24,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:04:24,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 20:04:24,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:04:24,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 20:04:24,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-21 20:04:24,524 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:04:24,525 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 195 transitions, 1981 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 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) [2024-06-21 20:04:24,525 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:04:24,525 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:04:24,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:04:24,907 INFO L124 PetriNetUnfolderBase]: 554/976 cut-off events. [2024-06-21 20:04:24,907 INFO L125 PetriNetUnfolderBase]: For 61150/61150 co-relation queries the response was YES. [2024-06-21 20:04:24,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6349 conditions, 976 events. 554/976 cut-off events. For 61150/61150 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 4687 event pairs, 69 based on Foata normal form. 2/977 useless extension candidates. Maximal degree in co-relation 6244. Up to 772 conditions per place. [2024-06-21 20:04:24,915 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 150 selfloop transitions, 60 changer transitions 0/212 dead transitions. [2024-06-21 20:04:24,915 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 212 transitions, 2473 flow [2024-06-21 20:04:24,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 20:04:24,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 20:04:24,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 103 transitions. [2024-06-21 20:04:24,916 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3576388888888889 [2024-06-21 20:04:24,916 INFO L175 Difference]: Start difference. First operand has 216 places, 195 transitions, 1981 flow. Second operand 9 states and 103 transitions. [2024-06-21 20:04:24,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 212 transitions, 2473 flow [2024-06-21 20:04:25,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 212 transitions, 2361 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-21 20:04:25,025 INFO L231 Difference]: Finished difference. Result has 217 places, 196 transitions, 2020 flow [2024-06-21 20:04:25,025 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1869, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2020, PETRI_PLACES=217, PETRI_TRANSITIONS=196} [2024-06-21 20:04:25,025 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 186 predicate places. [2024-06-21 20:04:25,025 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 196 transitions, 2020 flow [2024-06-21 20:04:25,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 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) [2024-06-21 20:04:25,025 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:04:25,025 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:04:25,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-21 20:04:25,026 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)] === [2024-06-21 20:04:25,026 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:04:25,026 INFO L85 PathProgramCache]: Analyzing trace with hash 4000761, now seen corresponding path program 2 times [2024-06-21 20:04:25,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:04:25,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026628976] [2024-06-21 20:04:25,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:04:25,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:04:25,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:04:26,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:04:26,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:04:26,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026628976] [2024-06-21 20:04:26,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026628976] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:04:26,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:04:26,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 20:04:26,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139510950] [2024-06-21 20:04:26,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:04:26,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 20:04:26,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:04:26,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 20:04:26,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-21 20:04:26,434 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:04:26,434 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 196 transitions, 2020 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 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) [2024-06-21 20:04:26,434 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:04:26,434 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:04:26,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:04:27,016 INFO L124 PetriNetUnfolderBase]: 580/1018 cut-off events. [2024-06-21 20:04:27,016 INFO L125 PetriNetUnfolderBase]: For 69854/69854 co-relation queries the response was YES. [2024-06-21 20:04:27,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6960 conditions, 1018 events. 580/1018 cut-off events. For 69854/69854 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 4928 event pairs, 70 based on Foata normal form. 2/1019 useless extension candidates. Maximal degree in co-relation 6854. Up to 701 conditions per place. [2024-06-21 20:04:27,025 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 146 selfloop transitions, 75 changer transitions 0/223 dead transitions. [2024-06-21 20:04:27,025 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 223 transitions, 2912 flow [2024-06-21 20:04:27,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 20:04:27,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 20:04:27,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2024-06-21 20:04:27,027 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.371875 [2024-06-21 20:04:27,027 INFO L175 Difference]: Start difference. First operand has 217 places, 196 transitions, 2020 flow. Second operand 10 states and 119 transitions. [2024-06-21 20:04:27,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 223 transitions, 2912 flow [2024-06-21 20:04:27,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 223 transitions, 2773 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-21 20:04:27,206 INFO L231 Difference]: Finished difference. Result has 220 places, 202 transitions, 2160 flow [2024-06-21 20:04:27,206 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1881, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2160, PETRI_PLACES=220, PETRI_TRANSITIONS=202} [2024-06-21 20:04:27,206 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 189 predicate places. [2024-06-21 20:04:27,207 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 202 transitions, 2160 flow [2024-06-21 20:04:27,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 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) [2024-06-21 20:04:27,207 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:04:27,207 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:04:27,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-21 20:04:27,207 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)] === [2024-06-21 20:04:27,208 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:04:27,208 INFO L85 PathProgramCache]: Analyzing trace with hash -19997455, now seen corresponding path program 3 times [2024-06-21 20:04:27,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:04:27,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737507845] [2024-06-21 20:04:27,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:04:27,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:04:27,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:04:28,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:04:28,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:04:28,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737507845] [2024-06-21 20:04:28,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737507845] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:04:28,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:04:28,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 20:04:28,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845009691] [2024-06-21 20:04:28,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:04:28,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 20:04:28,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:04:28,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 20:04:28,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-21 20:04:28,835 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:04:28,836 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 202 transitions, 2160 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 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) [2024-06-21 20:04:28,836 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:04:28,836 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:04:28,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:04:29,456 INFO L124 PetriNetUnfolderBase]: 586/1028 cut-off events. [2024-06-21 20:04:29,456 INFO L125 PetriNetUnfolderBase]: For 72253/72253 co-relation queries the response was YES. [2024-06-21 20:04:29,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7108 conditions, 1028 events. 586/1028 cut-off events. For 72253/72253 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 4968 event pairs, 80 based on Foata normal form. 2/1029 useless extension candidates. Maximal degree in co-relation 7001. Up to 868 conditions per place. [2024-06-21 20:04:29,469 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 174 selfloop transitions, 44 changer transitions 0/220 dead transitions. [2024-06-21 20:04:29,469 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 220 transitions, 2686 flow [2024-06-21 20:04:29,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 20:04:29,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 20:04:29,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-21 20:04:29,470 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.346875 [2024-06-21 20:04:29,470 INFO L175 Difference]: Start difference. First operand has 220 places, 202 transitions, 2160 flow. Second operand 10 states and 111 transitions. [2024-06-21 20:04:29,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 220 transitions, 2686 flow [2024-06-21 20:04:29,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 220 transitions, 2569 flow, removed 21 selfloop flow, removed 5 redundant places. [2024-06-21 20:04:29,639 INFO L231 Difference]: Finished difference. Result has 225 places, 204 transitions, 2184 flow [2024-06-21 20:04:29,639 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2045, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2184, PETRI_PLACES=225, PETRI_TRANSITIONS=204} [2024-06-21 20:04:29,639 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 194 predicate places. [2024-06-21 20:04:29,640 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 204 transitions, 2184 flow [2024-06-21 20:04:29,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 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) [2024-06-21 20:04:29,640 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:04:29,640 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:04:29,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-21 20:04:29,640 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)] === [2024-06-21 20:04:29,640 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:04:29,640 INFO L85 PathProgramCache]: Analyzing trace with hash 4008201, now seen corresponding path program 4 times [2024-06-21 20:04:29,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:04:29,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305649526] [2024-06-21 20:04:29,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:04:29,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:04:29,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:04:31,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:04:31,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:04:31,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305649526] [2024-06-21 20:04:31,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305649526] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:04:31,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:04:31,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 20:04:31,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534212602] [2024-06-21 20:04:31,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:04:31,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 20:04:31,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:04:31,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 20:04:31,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-21 20:04:31,870 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:04:31,870 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 204 transitions, 2184 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 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) [2024-06-21 20:04:31,870 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:04:31,870 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:04:31,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:04:32,407 INFO L124 PetriNetUnfolderBase]: 665/1159 cut-off events. [2024-06-21 20:04:32,407 INFO L125 PetriNetUnfolderBase]: For 79552/79552 co-relation queries the response was YES. [2024-06-21 20:04:32,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8025 conditions, 1159 events. 665/1159 cut-off events. For 79552/79552 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 5727 event pairs, 87 based on Foata normal form. 2/1160 useless extension candidates. Maximal degree in co-relation 7916. Up to 897 conditions per place. [2024-06-21 20:04:32,418 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 187 selfloop transitions, 70 changer transitions 0/259 dead transitions. [2024-06-21 20:04:32,418 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 259 transitions, 3276 flow [2024-06-21 20:04:32,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:04:32,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:04:32,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-21 20:04:32,419 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3693181818181818 [2024-06-21 20:04:32,419 INFO L175 Difference]: Start difference. First operand has 225 places, 204 transitions, 2184 flow. Second operand 11 states and 130 transitions. [2024-06-21 20:04:32,419 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 259 transitions, 3276 flow [2024-06-21 20:04:32,601 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 259 transitions, 3116 flow, removed 34 selfloop flow, removed 8 redundant places. [2024-06-21 20:04:32,604 INFO L231 Difference]: Finished difference. Result has 230 places, 230 transitions, 2563 flow [2024-06-21 20:04:32,605 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2065, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2563, PETRI_PLACES=230, PETRI_TRANSITIONS=230} [2024-06-21 20:04:32,605 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 199 predicate places. [2024-06-21 20:04:32,605 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 230 transitions, 2563 flow [2024-06-21 20:04:32,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 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) [2024-06-21 20:04:32,605 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:04:32,605 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:04:32,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-21 20:04:32,605 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)] === [2024-06-21 20:04:32,606 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:04:32,606 INFO L85 PathProgramCache]: Analyzing trace with hash -1449702565, now seen corresponding path program 5 times [2024-06-21 20:04:32,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:04:32,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652429625] [2024-06-21 20:04:32,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:04:32,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:04:32,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:04:34,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:04:34,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:04:34,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652429625] [2024-06-21 20:04:34,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652429625] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:04:34,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:04:34,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 20:04:34,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137368475] [2024-06-21 20:04:34,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:04:34,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 20:04:34,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:04:34,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 20:04:34,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-21 20:04:34,249 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:04:34,249 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 230 transitions, 2563 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 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) [2024-06-21 20:04:34,249 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:04:34,249 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:04:34,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:04:34,722 INFO L124 PetriNetUnfolderBase]: 667/1163 cut-off events. [2024-06-21 20:04:34,722 INFO L125 PetriNetUnfolderBase]: For 81883/81883 co-relation queries the response was YES. [2024-06-21 20:04:34,729 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8119 conditions, 1163 events. 667/1163 cut-off events. For 81883/81883 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 5765 event pairs, 74 based on Foata normal form. 4/1166 useless extension candidates. Maximal degree in co-relation 8007. Up to 935 conditions per place. [2024-06-21 20:04:34,733 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 183 selfloop transitions, 67 changer transitions 0/252 dead transitions. [2024-06-21 20:04:34,733 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 252 transitions, 3221 flow [2024-06-21 20:04:34,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 20:04:34,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 20:04:34,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-21 20:04:34,734 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.353125 [2024-06-21 20:04:34,734 INFO L175 Difference]: Start difference. First operand has 230 places, 230 transitions, 2563 flow. Second operand 10 states and 113 transitions. [2024-06-21 20:04:34,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 252 transitions, 3221 flow [2024-06-21 20:04:34,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 252 transitions, 3082 flow, removed 19 selfloop flow, removed 7 redundant places. [2024-06-21 20:04:34,949 INFO L231 Difference]: Finished difference. Result has 233 places, 234 transitions, 2676 flow [2024-06-21 20:04:34,949 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2428, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2676, PETRI_PLACES=233, PETRI_TRANSITIONS=234} [2024-06-21 20:04:34,949 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 202 predicate places. [2024-06-21 20:04:34,949 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 234 transitions, 2676 flow [2024-06-21 20:04:34,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 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) [2024-06-21 20:04:34,949 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:04:34,950 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:04:34,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-21 20:04:34,950 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)] === [2024-06-21 20:04:34,950 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:04:34,950 INFO L85 PathProgramCache]: Analyzing trace with hash -50109631, now seen corresponding path program 1 times [2024-06-21 20:04:34,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:04:34,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814637581] [2024-06-21 20:04:34,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:04:34,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:04:34,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:04:36,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:04:36,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:04:36,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814637581] [2024-06-21 20:04:36,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814637581] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:04:36,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:04:36,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 20:04:36,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428018635] [2024-06-21 20:04:36,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:04:36,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 20:04:36,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:04:36,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 20:04:36,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-21 20:04:36,561 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:04:36,561 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 234 transitions, 2676 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 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) [2024-06-21 20:04:36,561 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:04:36,561 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:04:36,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:04:37,023 INFO L124 PetriNetUnfolderBase]: 675/1180 cut-off events. [2024-06-21 20:04:37,023 INFO L125 PetriNetUnfolderBase]: For 84380/84380 co-relation queries the response was YES. [2024-06-21 20:04:37,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8222 conditions, 1180 events. 675/1180 cut-off events. For 84380/84380 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 5906 event pairs, 121 based on Foata normal form. 4/1183 useless extension candidates. Maximal degree in co-relation 8109. Up to 1047 conditions per place. [2024-06-21 20:04:37,034 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 216 selfloop transitions, 36 changer transitions 0/254 dead transitions. [2024-06-21 20:04:37,034 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 254 transitions, 3270 flow [2024-06-21 20:04:37,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:04:37,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:04:37,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 115 transitions. [2024-06-21 20:04:37,035 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32670454545454547 [2024-06-21 20:04:37,035 INFO L175 Difference]: Start difference. First operand has 233 places, 234 transitions, 2676 flow. Second operand 11 states and 115 transitions. [2024-06-21 20:04:37,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 254 transitions, 3270 flow [2024-06-21 20:04:37,269 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 254 transitions, 3068 flow, removed 37 selfloop flow, removed 8 redundant places. [2024-06-21 20:04:37,271 INFO L231 Difference]: Finished difference. Result has 236 places, 235 transitions, 2570 flow [2024-06-21 20:04:37,272 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2474, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2570, PETRI_PLACES=236, PETRI_TRANSITIONS=235} [2024-06-21 20:04:37,272 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 205 predicate places. [2024-06-21 20:04:37,272 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 235 transitions, 2570 flow [2024-06-21 20:04:37,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 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) [2024-06-21 20:04:37,272 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:04:37,272 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:04:37,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-21 20:04:37,273 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)] === [2024-06-21 20:04:37,273 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:04:37,273 INFO L85 PathProgramCache]: Analyzing trace with hash -1883792695, now seen corresponding path program 7 times [2024-06-21 20:04:37,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:04:37,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375280085] [2024-06-21 20:04:37,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:04:37,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:04:37,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:04:38,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:04:38,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:04:38,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375280085] [2024-06-21 20:04:38,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375280085] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:04:38,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:04:38,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 20:04:38,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158781803] [2024-06-21 20:04:38,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:04:38,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 20:04:38,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:04:38,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 20:04:38,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-21 20:04:38,359 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:04:38,359 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 235 transitions, 2570 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 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) [2024-06-21 20:04:38,359 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:04:38,359 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:04:38,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:04:38,861 INFO L124 PetriNetUnfolderBase]: 679/1187 cut-off events. [2024-06-21 20:04:38,861 INFO L125 PetriNetUnfolderBase]: For 81018/81018 co-relation queries the response was YES. [2024-06-21 20:04:38,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8147 conditions, 1187 events. 679/1187 cut-off events. For 81018/81018 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 5956 event pairs, 108 based on Foata normal form. 2/1188 useless extension candidates. Maximal degree in co-relation 8033. Up to 1049 conditions per place. [2024-06-21 20:04:38,872 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 209 selfloop transitions, 38 changer transitions 0/249 dead transitions. [2024-06-21 20:04:38,872 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 249 transitions, 3126 flow [2024-06-21 20:04:38,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 20:04:38,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 20:04:38,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 99 transitions. [2024-06-21 20:04:38,873 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-21 20:04:38,873 INFO L175 Difference]: Start difference. First operand has 236 places, 235 transitions, 2570 flow. Second operand 9 states and 99 transitions. [2024-06-21 20:04:38,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 249 transitions, 3126 flow [2024-06-21 20:04:39,129 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 249 transitions, 3040 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-06-21 20:04:39,132 INFO L231 Difference]: Finished difference. Result has 236 places, 236 transitions, 2592 flow [2024-06-21 20:04:39,132 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2484, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2592, PETRI_PLACES=236, PETRI_TRANSITIONS=236} [2024-06-21 20:04:39,132 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 205 predicate places. [2024-06-21 20:04:39,133 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 236 transitions, 2592 flow [2024-06-21 20:04:39,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 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) [2024-06-21 20:04:39,133 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:04:39,133 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:04:39,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-21 20:04:39,133 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)] === [2024-06-21 20:04:39,133 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:04:39,133 INFO L85 PathProgramCache]: Analyzing trace with hash 879409, now seen corresponding path program 6 times [2024-06-21 20:04:39,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:04:39,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869131293] [2024-06-21 20:04:39,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:04:39,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:04:39,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:04:41,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:04:41,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:04:41,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869131293] [2024-06-21 20:04:41,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869131293] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:04:41,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:04:41,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 20:04:41,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251041801] [2024-06-21 20:04:41,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:04:41,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 20:04:41,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:04:41,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 20:04:41,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-21 20:04:41,256 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:04:41,256 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 236 transitions, 2592 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 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) [2024-06-21 20:04:41,256 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:04:41,256 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:04:41,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:04:41,759 INFO L124 PetriNetUnfolderBase]: 695/1214 cut-off events. [2024-06-21 20:04:41,760 INFO L125 PetriNetUnfolderBase]: For 88998/89000 co-relation queries the response was YES. [2024-06-21 20:04:41,772 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8504 conditions, 1214 events. 695/1214 cut-off events. For 88998/89000 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 6111 event pairs, 100 based on Foata normal form. 2/1215 useless extension candidates. Maximal degree in co-relation 8389. Up to 1026 conditions per place. [2024-06-21 20:04:41,776 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 208 selfloop transitions, 49 changer transitions 0/259 dead transitions. [2024-06-21 20:04:41,776 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 259 transitions, 3402 flow [2024-06-21 20:04:41,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 20:04:41,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 20:04:41,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2024-06-21 20:04:41,778 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.359375 [2024-06-21 20:04:41,778 INFO L175 Difference]: Start difference. First operand has 236 places, 236 transitions, 2592 flow. Second operand 10 states and 115 transitions. [2024-06-21 20:04:41,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 259 transitions, 3402 flow [2024-06-21 20:04:42,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 259 transitions, 3304 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-21 20:04:42,036 INFO L231 Difference]: Finished difference. Result has 239 places, 240 transitions, 2689 flow [2024-06-21 20:04:42,037 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2494, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2689, PETRI_PLACES=239, PETRI_TRANSITIONS=240} [2024-06-21 20:04:42,037 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 208 predicate places. [2024-06-21 20:04:42,037 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 240 transitions, 2689 flow [2024-06-21 20:04:42,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 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) [2024-06-21 20:04:42,037 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:04:42,037 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:04:42,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-21 20:04:42,037 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)] === [2024-06-21 20:04:42,038 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:04:42,038 INFO L85 PathProgramCache]: Analyzing trace with hash 346444891, now seen corresponding path program 7 times [2024-06-21 20:04:42,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:04:42,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541736238] [2024-06-21 20:04:42,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:04:42,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:04:42,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:04:43,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:04:43,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:04:43,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541736238] [2024-06-21 20:04:43,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541736238] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:04:43,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:04:43,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 20:04:43,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083403231] [2024-06-21 20:04:43,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:04:43,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 20:04:43,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:04:43,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 20:04:43,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-21 20:04:43,584 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:04:43,585 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 240 transitions, 2689 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 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) [2024-06-21 20:04:43,585 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:04:43,585 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:04:43,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:04:44,229 INFO L124 PetriNetUnfolderBase]: 711/1240 cut-off events. [2024-06-21 20:04:44,229 INFO L125 PetriNetUnfolderBase]: For 97167/97169 co-relation queries the response was YES. [2024-06-21 20:04:44,237 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8925 conditions, 1240 events. 711/1240 cut-off events. For 97167/97169 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 6282 event pairs, 70 based on Foata normal form. 2/1241 useless extension candidates. Maximal degree in co-relation 8809. Up to 948 conditions per place. [2024-06-21 20:04:44,240 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 186 selfloop transitions, 77 changer transitions 0/265 dead transitions. [2024-06-21 20:04:44,241 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 265 transitions, 3531 flow [2024-06-21 20:04:44,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 20:04:44,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 20:04:44,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2024-06-21 20:04:44,242 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.371875 [2024-06-21 20:04:44,242 INFO L175 Difference]: Start difference. First operand has 239 places, 240 transitions, 2689 flow. Second operand 10 states and 119 transitions. [2024-06-21 20:04:44,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 265 transitions, 3531 flow [2024-06-21 20:04:44,501 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 265 transitions, 3427 flow, removed 24 selfloop flow, removed 6 redundant places. [2024-06-21 20:04:44,504 INFO L231 Difference]: Finished difference. Result has 243 places, 244 transitions, 2844 flow [2024-06-21 20:04:44,504 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2585, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2844, PETRI_PLACES=243, PETRI_TRANSITIONS=244} [2024-06-21 20:04:44,505 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 212 predicate places. [2024-06-21 20:04:44,505 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 244 transitions, 2844 flow [2024-06-21 20:04:44,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 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) [2024-06-21 20:04:44,505 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:04:44,505 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:04:44,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-21 20:04:44,506 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)] === [2024-06-21 20:04:44,506 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:04:44,506 INFO L85 PathProgramCache]: Analyzing trace with hash 748938093, now seen corresponding path program 8 times [2024-06-21 20:04:44,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:04:44,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578625297] [2024-06-21 20:04:44,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:04:44,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:04:44,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:04:45,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:04:45,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:04:45,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578625297] [2024-06-21 20:04:45,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578625297] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:04:45,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:04:45,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 20:04:45,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134980880] [2024-06-21 20:04:45,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:04:45,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 20:04:45,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:04:45,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 20:04:45,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-21 20:04:46,118 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:04:46,118 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 244 transitions, 2844 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 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) [2024-06-21 20:04:46,118 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:04:46,118 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:04:46,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:04:46,591 INFO L124 PetriNetUnfolderBase]: 717/1250 cut-off events. [2024-06-21 20:04:46,591 INFO L125 PetriNetUnfolderBase]: For 99963/99965 co-relation queries the response was YES. [2024-06-21 20:04:46,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9170 conditions, 1250 events. 717/1250 cut-off events. For 99963/99965 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 6339 event pairs, 107 based on Foata normal form. 2/1251 useless extension candidates. Maximal degree in co-relation 9052. Up to 1083 conditions per place. [2024-06-21 20:04:46,604 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 215 selfloop transitions, 46 changer transitions 0/263 dead transitions. [2024-06-21 20:04:46,604 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 263 transitions, 3462 flow [2024-06-21 20:04:46,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 20:04:46,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 20:04:46,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-21 20:04:46,605 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35 [2024-06-21 20:04:46,605 INFO L175 Difference]: Start difference. First operand has 243 places, 244 transitions, 2844 flow. Second operand 10 states and 112 transitions. [2024-06-21 20:04:46,605 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 263 transitions, 3462 flow [2024-06-21 20:04:46,866 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 263 transitions, 3310 flow, removed 28 selfloop flow, removed 6 redundant places. [2024-06-21 20:04:46,869 INFO L231 Difference]: Finished difference. Result has 247 places, 246 transitions, 2833 flow [2024-06-21 20:04:46,870 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2692, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2833, PETRI_PLACES=247, PETRI_TRANSITIONS=246} [2024-06-21 20:04:46,870 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 216 predicate places. [2024-06-21 20:04:46,870 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 246 transitions, 2833 flow [2024-06-21 20:04:46,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 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) [2024-06-21 20:04:46,870 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:04:46,870 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:04:46,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-21 20:04:46,870 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)] === [2024-06-21 20:04:46,871 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:04:46,871 INFO L85 PathProgramCache]: Analyzing trace with hash -198785453, now seen corresponding path program 8 times [2024-06-21 20:04:46,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:04:46,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634981642] [2024-06-21 20:04:46,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:04:46,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:04:46,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:04:47,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:04:47,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:04:47,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634981642] [2024-06-21 20:04:47,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634981642] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:04:47,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:04:47,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 20:04:47,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457613453] [2024-06-21 20:04:47,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:04:47,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 20:04:47,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:04:47,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 20:04:47,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-21 20:04:47,935 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:04:47,936 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 246 transitions, 2833 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 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) [2024-06-21 20:04:47,936 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:04:47,936 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:04:47,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:04:48,457 INFO L124 PetriNetUnfolderBase]: 721/1258 cut-off events. [2024-06-21 20:04:48,457 INFO L125 PetriNetUnfolderBase]: For 102294/102296 co-relation queries the response was YES. [2024-06-21 20:04:48,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9248 conditions, 1258 events. 721/1258 cut-off events. For 102294/102296 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 6402 event pairs, 116 based on Foata normal form. 2/1259 useless extension candidates. Maximal degree in co-relation 9128. Up to 1119 conditions per place. [2024-06-21 20:04:48,467 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 221 selfloop transitions, 37 changer transitions 0/260 dead transitions. [2024-06-21 20:04:48,468 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 260 transitions, 3411 flow [2024-06-21 20:04:48,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 20:04:48,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 20:04:48,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-06-21 20:04:48,469 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3402777777777778 [2024-06-21 20:04:48,469 INFO L175 Difference]: Start difference. First operand has 247 places, 246 transitions, 2833 flow. Second operand 9 states and 98 transitions. [2024-06-21 20:04:48,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 260 transitions, 3411 flow [2024-06-21 20:04:48,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 260 transitions, 3290 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-21 20:04:48,740 INFO L231 Difference]: Finished difference. Result has 248 places, 247 transitions, 2820 flow [2024-06-21 20:04:48,741 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2712, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2820, PETRI_PLACES=248, PETRI_TRANSITIONS=247} [2024-06-21 20:04:48,741 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 217 predicate places. [2024-06-21 20:04:48,741 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 247 transitions, 2820 flow [2024-06-21 20:04:48,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 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) [2024-06-21 20:04:48,741 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:04:48,741 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:04:48,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-21 20:04:48,741 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)] === [2024-06-21 20:04:48,742 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:04:48,742 INFO L85 PathProgramCache]: Analyzing trace with hash 1684726207, now seen corresponding path program 9 times [2024-06-21 20:04:48,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:04:48,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329501337] [2024-06-21 20:04:48,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:04:48,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:04:48,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:04:50,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:04:50,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:04:50,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329501337] [2024-06-21 20:04:50,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329501337] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:04:50,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:04:50,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 20:04:50,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877444489] [2024-06-21 20:04:50,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:04:50,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 20:04:50,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:04:50,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 20:04:50,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-21 20:04:50,178 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:04:50,178 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 247 transitions, 2820 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 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) [2024-06-21 20:04:50,178 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:04:50,178 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:04:50,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:04:50,740 INFO L124 PetriNetUnfolderBase]: 727/1268 cut-off events. [2024-06-21 20:04:50,740 INFO L125 PetriNetUnfolderBase]: For 104928/104930 co-relation queries the response was YES. [2024-06-21 20:04:50,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9298 conditions, 1268 events. 727/1268 cut-off events. For 104928/104930 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 6461 event pairs, 72 based on Foata normal form. 2/1269 useless extension candidates. Maximal degree in co-relation 9177. Up to 972 conditions per place. [2024-06-21 20:04:50,751 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 189 selfloop transitions, 78 changer transitions 0/269 dead transitions. [2024-06-21 20:04:50,751 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 269 transitions, 3614 flow [2024-06-21 20:04:50,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 20:04:50,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 20:04:50,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2024-06-21 20:04:50,752 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.371875 [2024-06-21 20:04:50,752 INFO L175 Difference]: Start difference. First operand has 248 places, 247 transitions, 2820 flow. Second operand 10 states and 119 transitions. [2024-06-21 20:04:50,752 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 269 transitions, 3614 flow [2024-06-21 20:04:51,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 269 transitions, 3516 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-21 20:04:51,065 INFO L231 Difference]: Finished difference. Result has 251 places, 249 transitions, 2923 flow [2024-06-21 20:04:51,065 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2722, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2923, PETRI_PLACES=251, PETRI_TRANSITIONS=249} [2024-06-21 20:04:51,065 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 220 predicate places. [2024-06-21 20:04:51,066 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 249 transitions, 2923 flow [2024-06-21 20:04:51,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 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) [2024-06-21 20:04:51,066 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:04:51,066 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:04:51,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-21 20:04:51,066 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)] === [2024-06-21 20:04:51,067 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:04:51,067 INFO L85 PathProgramCache]: Analyzing trace with hash 346235641, now seen corresponding path program 10 times [2024-06-21 20:04:51,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:04:51,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057069908] [2024-06-21 20:04:51,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:04:51,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:04:51,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:04:52,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:04:52,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:04:52,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057069908] [2024-06-21 20:04:52,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057069908] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:04:52,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:04:52,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 20:04:52,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739197471] [2024-06-21 20:04:52,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:04:52,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 20:04:52,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:04:52,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 20:04:52,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-21 20:04:52,369 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:04:52,369 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 249 transitions, 2923 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 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) [2024-06-21 20:04:52,369 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:04:52,369 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:04:52,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:04:52,818 INFO L124 PetriNetUnfolderBase]: 723/1262 cut-off events. [2024-06-21 20:04:52,818 INFO L125 PetriNetUnfolderBase]: For 101424/101426 co-relation queries the response was YES. [2024-06-21 20:04:52,827 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9211 conditions, 1262 events. 723/1262 cut-off events. For 101424/101426 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 6443 event pairs, 73 based on Foata normal form. 2/1263 useless extension candidates. Maximal degree in co-relation 9089. Up to 1005 conditions per place. [2024-06-21 20:04:52,830 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 193 selfloop transitions, 71 changer transitions 0/266 dead transitions. [2024-06-21 20:04:52,830 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 266 transitions, 3507 flow [2024-06-21 20:04:52,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 20:04:52,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 20:04:52,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-21 20:04:52,831 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35 [2024-06-21 20:04:52,831 INFO L175 Difference]: Start difference. First operand has 251 places, 249 transitions, 2923 flow. Second operand 10 states and 112 transitions. [2024-06-21 20:04:52,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 266 transitions, 3507 flow [2024-06-21 20:04:53,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 266 transitions, 3300 flow, removed 31 selfloop flow, removed 7 redundant places. [2024-06-21 20:04:53,115 INFO L231 Difference]: Finished difference. Result has 254 places, 249 transitions, 2863 flow [2024-06-21 20:04:53,115 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2716, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2863, PETRI_PLACES=254, PETRI_TRANSITIONS=249} [2024-06-21 20:04:53,115 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 223 predicate places. [2024-06-21 20:04:53,115 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 249 transitions, 2863 flow [2024-06-21 20:04:53,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 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) [2024-06-21 20:04:53,116 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:04:53,116 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:04:53,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-21 20:04:53,116 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)] === [2024-06-21 20:04:53,116 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:04:53,117 INFO L85 PathProgramCache]: Analyzing trace with hash -1536920387, now seen corresponding path program 11 times [2024-06-21 20:04:53,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:04:53,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298086178] [2024-06-21 20:04:53,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:04:53,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:04:53,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:04:54,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:04:54,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:04:54,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298086178] [2024-06-21 20:04:54,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298086178] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:04:54,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:04:54,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 20:04:54,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875047747] [2024-06-21 20:04:54,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:04:54,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 20:04:54,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:04:54,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 20:04:54,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-21 20:04:54,249 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:04:54,249 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 249 transitions, 2863 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 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) [2024-06-21 20:04:54,249 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:04:54,249 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:04:54,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:04:54,836 INFO L124 PetriNetUnfolderBase]: 729/1272 cut-off events. [2024-06-21 20:04:54,836 INFO L125 PetriNetUnfolderBase]: For 103868/103870 co-relation queries the response was YES. [2024-06-21 20:04:54,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9239 conditions, 1272 events. 729/1272 cut-off events. For 103868/103870 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 6500 event pairs, 121 based on Foata normal form. 2/1273 useless extension candidates. Maximal degree in co-relation 9116. Up to 1123 conditions per place. [2024-06-21 20:04:54,846 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 223 selfloop transitions, 41 changer transitions 0/266 dead transitions. [2024-06-21 20:04:54,846 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 266 transitions, 3487 flow [2024-06-21 20:04:54,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 20:04:54,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 20:04:54,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-21 20:04:54,847 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.340625 [2024-06-21 20:04:54,847 INFO L175 Difference]: Start difference. First operand has 254 places, 249 transitions, 2863 flow. Second operand 10 states and 109 transitions. [2024-06-21 20:04:54,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 266 transitions, 3487 flow [2024-06-21 20:04:55,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 266 transitions, 3329 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-21 20:04:55,148 INFO L231 Difference]: Finished difference. Result has 254 places, 251 transitions, 2848 flow [2024-06-21 20:04:55,149 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2705, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2848, PETRI_PLACES=254, PETRI_TRANSITIONS=251} [2024-06-21 20:04:55,149 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 223 predicate places. [2024-06-21 20:04:55,149 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 251 transitions, 2848 flow [2024-06-21 20:04:55,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 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) [2024-06-21 20:04:55,149 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:04:55,149 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:04:55,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-21 20:04:55,150 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)] === [2024-06-21 20:04:55,150 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:04:55,150 INFO L85 PathProgramCache]: Analyzing trace with hash -1337624549, now seen corresponding path program 9 times [2024-06-21 20:04:55,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:04:55,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777955946] [2024-06-21 20:04:55,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:04:55,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:04:55,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:04:56,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:04:56,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:04:56,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777955946] [2024-06-21 20:04:56,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777955946] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:04:56,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:04:56,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 20:04:56,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984940576] [2024-06-21 20:04:56,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:04:56,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 20:04:56,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:04:56,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 20:04:56,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-21 20:04:56,193 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:04:56,193 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 251 transitions, 2848 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 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) [2024-06-21 20:04:56,193 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:04:56,193 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:04:56,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:04:56,662 INFO L124 PetriNetUnfolderBase]: 733/1280 cut-off events. [2024-06-21 20:04:56,662 INFO L125 PetriNetUnfolderBase]: For 106909/106911 co-relation queries the response was YES. [2024-06-21 20:04:56,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9267 conditions, 1280 events. 733/1280 cut-off events. For 106909/106911 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 6526 event pairs, 115 based on Foata normal form. 2/1281 useless extension candidates. Maximal degree in co-relation 9143. Up to 1137 conditions per place. [2024-06-21 20:04:56,675 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 223 selfloop transitions, 40 changer transitions 0/265 dead transitions. [2024-06-21 20:04:56,675 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 265 transitions, 3442 flow [2024-06-21 20:04:56,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 20:04:56,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 20:04:56,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-06-21 20:04:56,676 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3402777777777778 [2024-06-21 20:04:56,676 INFO L175 Difference]: Start difference. First operand has 254 places, 251 transitions, 2848 flow. Second operand 9 states and 98 transitions. [2024-06-21 20:04:56,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 265 transitions, 3442 flow [2024-06-21 20:04:56,948 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 265 transitions, 3315 flow, removed 24 selfloop flow, removed 8 redundant places. [2024-06-21 20:04:56,951 INFO L231 Difference]: Finished difference. Result has 255 places, 252 transitions, 2837 flow [2024-06-21 20:04:56,951 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2721, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2837, PETRI_PLACES=255, PETRI_TRANSITIONS=252} [2024-06-21 20:04:56,951 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 224 predicate places. [2024-06-21 20:04:56,951 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 252 transitions, 2837 flow [2024-06-21 20:04:56,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 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) [2024-06-21 20:04:56,952 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:04:56,952 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:04:56,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-21 20:04:56,952 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)] === [2024-06-21 20:04:56,953 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:04:56,953 INFO L85 PathProgramCache]: Analyzing trace with hash 346229689, now seen corresponding path program 10 times [2024-06-21 20:04:56,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:04:56,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113011592] [2024-06-21 20:04:56,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:04:56,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:04:56,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:04:57,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:04:57,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:04:57,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113011592] [2024-06-21 20:04:57,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113011592] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:04:57,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:04:57,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 20:04:57,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916486208] [2024-06-21 20:04:57,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:04:57,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 20:04:57,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:04:57,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 20:04:57,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-21 20:04:58,002 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:04:58,002 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 252 transitions, 2837 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 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) [2024-06-21 20:04:58,002 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:04:58,002 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:04:58,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:04:58,460 INFO L124 PetriNetUnfolderBase]: 737/1288 cut-off events. [2024-06-21 20:04:58,461 INFO L125 PetriNetUnfolderBase]: For 109464/109466 co-relation queries the response was YES. [2024-06-21 20:04:58,469 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9315 conditions, 1288 events. 737/1288 cut-off events. For 109464/109466 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 6648 event pairs, 73 based on Foata normal form. 2/1289 useless extension candidates. Maximal degree in co-relation 9190. Up to 1041 conditions per place. [2024-06-21 20:04:58,473 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 198 selfloop transitions, 68 changer transitions 0/268 dead transitions. [2024-06-21 20:04:58,473 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 268 transitions, 3449 flow [2024-06-21 20:04:58,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 20:04:58,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 20:04:58,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 102 transitions. [2024-06-21 20:04:58,474 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3541666666666667 [2024-06-21 20:04:58,474 INFO L175 Difference]: Start difference. First operand has 255 places, 252 transitions, 2837 flow. Second operand 9 states and 102 transitions. [2024-06-21 20:04:58,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 268 transitions, 3449 flow [2024-06-21 20:04:58,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 268 transitions, 3343 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-21 20:04:58,785 INFO L231 Difference]: Finished difference. Result has 257 places, 253 transitions, 2905 flow [2024-06-21 20:04:58,786 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2731, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2905, PETRI_PLACES=257, PETRI_TRANSITIONS=253} [2024-06-21 20:04:58,786 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 226 predicate places. [2024-06-21 20:04:58,786 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 253 transitions, 2905 flow [2024-06-21 20:04:58,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 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) [2024-06-21 20:04:58,787 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:04:58,787 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:04:58,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-21 20:04:58,787 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)] === [2024-06-21 20:04:58,787 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:04:58,787 INFO L85 PathProgramCache]: Analyzing trace with hash -1337618597, now seen corresponding path program 12 times [2024-06-21 20:04:58,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:04:58,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198402690] [2024-06-21 20:04:58,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:04:58,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:04:58,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:04:59,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:04:59,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:04:59,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198402690] [2024-06-21 20:04:59,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198402690] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:04:59,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:04:59,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 20:04:59,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684937068] [2024-06-21 20:04:59,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:04:59,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 20:04:59,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:04:59,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 20:04:59,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-21 20:05:00,062 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:05:00,063 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 253 transitions, 2905 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 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) [2024-06-21 20:05:00,063 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:05:00,063 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:05:00,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:05:00,638 INFO L124 PetriNetUnfolderBase]: 733/1282 cut-off events. [2024-06-21 20:05:00,638 INFO L125 PetriNetUnfolderBase]: For 105440/105442 co-relation queries the response was YES. [2024-06-21 20:05:00,646 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9177 conditions, 1282 events. 733/1282 cut-off events. For 105440/105442 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 6602 event pairs, 114 based on Foata normal form. 2/1283 useless extension candidates. Maximal degree in co-relation 9051. Up to 1129 conditions per place. [2024-06-21 20:05:00,649 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 223 selfloop transitions, 43 changer transitions 0/268 dead transitions. [2024-06-21 20:05:00,650 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 268 transitions, 3483 flow [2024-06-21 20:05:00,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 20:05:00,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 20:05:00,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-21 20:05:00,651 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3375 [2024-06-21 20:05:00,651 INFO L175 Difference]: Start difference. First operand has 257 places, 253 transitions, 2905 flow. Second operand 10 states and 108 transitions. [2024-06-21 20:05:00,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 268 transitions, 3483 flow [2024-06-21 20:05:00,997 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 268 transitions, 3291 flow, removed 29 selfloop flow, removed 7 redundant places. [2024-06-21 20:05:01,001 INFO L231 Difference]: Finished difference. Result has 260 places, 253 transitions, 2804 flow [2024-06-21 20:05:01,001 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2713, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2804, PETRI_PLACES=260, PETRI_TRANSITIONS=253} [2024-06-21 20:05:01,001 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 229 predicate places. [2024-06-21 20:05:01,001 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 253 transitions, 2804 flow [2024-06-21 20:05:01,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 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) [2024-06-21 20:05:01,002 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:05:01,002 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:05:01,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-21 20:05:01,002 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)] === [2024-06-21 20:05:01,002 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:05:01,003 INFO L85 PathProgramCache]: Analyzing trace with hash -1531563959, now seen corresponding path program 11 times [2024-06-21 20:05:01,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:05:01,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130131555] [2024-06-21 20:05:01,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:05:01,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:05:01,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:05:01,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:05:01,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:05:01,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130131555] [2024-06-21 20:05:01,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130131555] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:05:01,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:05:01,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 20:05:01,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254324099] [2024-06-21 20:05:01,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:05:01,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 20:05:01,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:05:01,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 20:05:01,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-21 20:05:01,942 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:05:01,942 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 253 transitions, 2804 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 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) [2024-06-21 20:05:01,942 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:05:01,942 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:05:01,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:05:02,431 INFO L124 PetriNetUnfolderBase]: 737/1290 cut-off events. [2024-06-21 20:05:02,431 INFO L125 PetriNetUnfolderBase]: For 107711/107713 co-relation queries the response was YES. [2024-06-21 20:05:02,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9121 conditions, 1290 events. 737/1290 cut-off events. For 107711/107713 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 6635 event pairs, 114 based on Foata normal form. 2/1291 useless extension candidates. Maximal degree in co-relation 8994. Up to 1124 conditions per place. [2024-06-21 20:05:02,444 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 221 selfloop transitions, 46 changer transitions 0/269 dead transitions. [2024-06-21 20:05:02,444 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 269 transitions, 3418 flow [2024-06-21 20:05:02,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 20:05:02,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 20:05:02,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 103 transitions. [2024-06-21 20:05:02,445 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3576388888888889 [2024-06-21 20:05:02,445 INFO L175 Difference]: Start difference. First operand has 260 places, 253 transitions, 2804 flow. Second operand 9 states and 103 transitions. [2024-06-21 20:05:02,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 269 transitions, 3418 flow [2024-06-21 20:05:02,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 269 transitions, 3315 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-21 20:05:02,785 INFO L231 Difference]: Finished difference. Result has 260 places, 254 transitions, 2835 flow [2024-06-21 20:05:02,786 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2701, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2835, PETRI_PLACES=260, PETRI_TRANSITIONS=254} [2024-06-21 20:05:02,786 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 229 predicate places. [2024-06-21 20:05:02,786 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 254 transitions, 2835 flow [2024-06-21 20:05:02,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 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) [2024-06-21 20:05:02,786 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:05:02,786 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:05:02,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-21 20:05:02,786 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)] === [2024-06-21 20:05:02,786 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:05:02,786 INFO L85 PathProgramCache]: Analyzing trace with hash -962573589, now seen corresponding path program 2 times [2024-06-21 20:05:02,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:05:02,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973288696] [2024-06-21 20:05:02,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:05:02,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:05:02,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:05:03,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:05:03,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:05:03,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973288696] [2024-06-21 20:05:03,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973288696] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:05:03,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:05:03,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 20:05:03,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096687054] [2024-06-21 20:05:03,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:05:03,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 20:05:03,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:05:03,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 20:05:03,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-21 20:05:03,995 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:05:03,995 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 254 transitions, 2835 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 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) [2024-06-21 20:05:03,995 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:05:03,995 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:05:03,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:05:04,490 INFO L124 PetriNetUnfolderBase]: 745/1306 cut-off events. [2024-06-21 20:05:04,490 INFO L125 PetriNetUnfolderBase]: For 117288/117290 co-relation queries the response was YES. [2024-06-21 20:05:04,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9225 conditions, 1306 events. 745/1306 cut-off events. For 117288/117290 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 6784 event pairs, 125 based on Foata normal form. 4/1309 useless extension candidates. Maximal degree in co-relation 9097. Up to 1169 conditions per place. [2024-06-21 20:05:04,508 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 228 selfloop transitions, 42 changer transitions 0/272 dead transitions. [2024-06-21 20:05:04,508 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 272 transitions, 3455 flow [2024-06-21 20:05:04,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:05:04,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:05:04,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 115 transitions. [2024-06-21 20:05:04,510 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32670454545454547 [2024-06-21 20:05:04,510 INFO L175 Difference]: Start difference. First operand has 260 places, 254 transitions, 2835 flow. Second operand 11 states and 115 transitions. [2024-06-21 20:05:04,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 272 transitions, 3455 flow [2024-06-21 20:05:04,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 272 transitions, 3333 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-06-21 20:05:04,819 INFO L231 Difference]: Finished difference. Result has 264 places, 255 transitions, 2823 flow [2024-06-21 20:05:04,819 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2713, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2823, PETRI_PLACES=264, PETRI_TRANSITIONS=255} [2024-06-21 20:05:04,819 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 233 predicate places. [2024-06-21 20:05:04,819 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 255 transitions, 2823 flow [2024-06-21 20:05:04,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 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) [2024-06-21 20:05:04,819 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:05:04,820 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:05:04,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-21 20:05:04,820 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)] === [2024-06-21 20:05:04,820 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:05:04,820 INFO L85 PathProgramCache]: Analyzing trace with hash 756364763, now seen corresponding path program 3 times [2024-06-21 20:05:04,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:05:04,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912339916] [2024-06-21 20:05:04,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:05:04,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:05:04,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:05:06,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:05:06,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:05:06,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912339916] [2024-06-21 20:05:06,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912339916] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:05:06,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:05:06,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 20:05:06,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357809600] [2024-06-21 20:05:06,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:05:06,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 20:05:06,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:05:06,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 20:05:06,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-21 20:05:06,267 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:05:06,269 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 255 transitions, 2823 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 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) [2024-06-21 20:05:06,269 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:05:06,269 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:05:06,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:05:06,857 INFO L124 PetriNetUnfolderBase]: 753/1322 cut-off events. [2024-06-21 20:05:06,857 INFO L125 PetriNetUnfolderBase]: For 116950/116952 co-relation queries the response was YES. [2024-06-21 20:05:06,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9238 conditions, 1322 events. 753/1322 cut-off events. For 116950/116952 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 6887 event pairs, 149 based on Foata normal form. 4/1325 useless extension candidates. Maximal degree in co-relation 9109. Up to 1215 conditions per place. [2024-06-21 20:05:06,868 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 240 selfloop transitions, 30 changer transitions 0/272 dead transitions. [2024-06-21 20:05:06,869 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 272 transitions, 3439 flow [2024-06-21 20:05:06,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:05:06,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:05:06,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 113 transitions. [2024-06-21 20:05:06,870 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3210227272727273 [2024-06-21 20:05:06,870 INFO L175 Difference]: Start difference. First operand has 264 places, 255 transitions, 2823 flow. Second operand 11 states and 113 transitions. [2024-06-21 20:05:06,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 272 transitions, 3439 flow [2024-06-21 20:05:07,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 272 transitions, 3339 flow, removed 9 selfloop flow, removed 9 redundant places. [2024-06-21 20:05:07,254 INFO L231 Difference]: Finished difference. Result has 266 places, 256 transitions, 2811 flow [2024-06-21 20:05:07,255 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2723, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2811, PETRI_PLACES=266, PETRI_TRANSITIONS=256} [2024-06-21 20:05:07,255 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 235 predicate places. [2024-06-21 20:05:07,255 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 256 transitions, 2811 flow [2024-06-21 20:05:07,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 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) [2024-06-21 20:05:07,255 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:05:07,255 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:05:07,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-21 20:05:07,255 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)] === [2024-06-21 20:05:07,256 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:05:07,256 INFO L85 PathProgramCache]: Analyzing trace with hash 554796873, now seen corresponding path program 13 times [2024-06-21 20:05:07,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:05:07,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9637970] [2024-06-21 20:05:07,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:05:07,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:05:07,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:05:08,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:05:08,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:05:08,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9637970] [2024-06-21 20:05:08,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9637970] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:05:08,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:05:08,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 20:05:08,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098253971] [2024-06-21 20:05:08,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:05:08,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 20:05:08,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:05:08,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 20:05:08,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-21 20:05:08,683 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:05:08,683 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 256 transitions, 2811 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 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) [2024-06-21 20:05:08,683 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:05:08,683 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:05:08,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:05:09,181 INFO L124 PetriNetUnfolderBase]: 759/1332 cut-off events. [2024-06-21 20:05:09,181 INFO L125 PetriNetUnfolderBase]: For 112820/112822 co-relation queries the response was YES. [2024-06-21 20:05:09,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9316 conditions, 1332 events. 759/1332 cut-off events. For 112820/112822 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 6948 event pairs, 120 based on Foata normal form. 2/1333 useless extension candidates. Maximal degree in co-relation 9186. Up to 1146 conditions per place. [2024-06-21 20:05:09,193 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 221 selfloop transitions, 52 changer transitions 0/275 dead transitions. [2024-06-21 20:05:09,193 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 275 transitions, 3467 flow [2024-06-21 20:05:09,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 20:05:09,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 20:05:09,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-21 20:05:09,194 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.353125 [2024-06-21 20:05:09,194 INFO L175 Difference]: Start difference. First operand has 266 places, 256 transitions, 2811 flow. Second operand 10 states and 113 transitions. [2024-06-21 20:05:09,194 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 275 transitions, 3467 flow [2024-06-21 20:05:09,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 275 transitions, 3389 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-06-21 20:05:09,550 INFO L231 Difference]: Finished difference. Result has 267 places, 258 transitions, 2905 flow [2024-06-21 20:05:09,550 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2733, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2905, PETRI_PLACES=267, PETRI_TRANSITIONS=258} [2024-06-21 20:05:09,550 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 236 predicate places. [2024-06-21 20:05:09,550 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 258 transitions, 2905 flow [2024-06-21 20:05:09,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 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) [2024-06-21 20:05:09,550 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:05:09,551 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:05:09,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-21 20:05:09,551 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)] === [2024-06-21 20:05:09,551 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:05:09,551 INFO L85 PathProgramCache]: Analyzing trace with hash -1531348757, now seen corresponding path program 14 times [2024-06-21 20:05:09,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:05:09,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412026787] [2024-06-21 20:05:09,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:05:09,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:05:09,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:05:10,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:05:10,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:05:10,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412026787] [2024-06-21 20:05:10,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412026787] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:05:10,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:05:10,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 20:05:10,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971153023] [2024-06-21 20:05:10,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:05:10,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 20:05:10,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:05:10,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 20:05:10,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-21 20:05:11,007 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:05:11,007 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 258 transitions, 2905 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 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) [2024-06-21 20:05:11,007 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:05:11,007 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:05:11,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:05:11,597 INFO L124 PetriNetUnfolderBase]: 775/1358 cut-off events. [2024-06-21 20:05:11,597 INFO L125 PetriNetUnfolderBase]: For 123674/123676 co-relation queries the response was YES. [2024-06-21 20:05:11,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9845 conditions, 1358 events. 775/1358 cut-off events. For 123674/123676 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 7098 event pairs, 114 based on Foata normal form. 2/1359 useless extension candidates. Maximal degree in co-relation 9714. Up to 1091 conditions per place. [2024-06-21 20:05:11,608 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 208 selfloop transitions, 72 changer transitions 0/282 dead transitions. [2024-06-21 20:05:11,608 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 282 transitions, 3823 flow [2024-06-21 20:05:11,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 20:05:11,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 20:05:11,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 118 transitions. [2024-06-21 20:05:11,609 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36875 [2024-06-21 20:05:11,609 INFO L175 Difference]: Start difference. First operand has 267 places, 258 transitions, 2905 flow. Second operand 10 states and 118 transitions. [2024-06-21 20:05:11,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 282 transitions, 3823 flow [2024-06-21 20:05:11,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 282 transitions, 3670 flow, removed 26 selfloop flow, removed 9 redundant places. [2024-06-21 20:05:11,987 INFO L231 Difference]: Finished difference. Result has 268 places, 262 transitions, 3030 flow [2024-06-21 20:05:11,987 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2754, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3030, PETRI_PLACES=268, PETRI_TRANSITIONS=262} [2024-06-21 20:05:11,987 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 237 predicate places. [2024-06-21 20:05:11,987 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 262 transitions, 3030 flow [2024-06-21 20:05:11,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 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) [2024-06-21 20:05:11,987 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:05:11,987 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:05:11,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-21 20:05:11,988 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)] === [2024-06-21 20:05:11,988 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:05:11,988 INFO L85 PathProgramCache]: Analyzing trace with hash -1531348478, now seen corresponding path program 2 times [2024-06-21 20:05:11,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:05:11,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699494698] [2024-06-21 20:05:11,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:05:11,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:05:12,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:05:14,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:05:14,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:05:14,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699494698] [2024-06-21 20:05:14,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699494698] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:05:14,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:05:14,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 20:05:14,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085880747] [2024-06-21 20:05:14,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:05:14,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 20:05:14,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:05:14,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 20:05:14,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-21 20:05:14,935 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:05:14,935 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 262 transitions, 3030 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 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) [2024-06-21 20:05:14,935 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:05:14,935 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:05:14,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:05:15,474 INFO L124 PetriNetUnfolderBase]: 773/1355 cut-off events. [2024-06-21 20:05:15,474 INFO L125 PetriNetUnfolderBase]: For 116441/116441 co-relation queries the response was YES. [2024-06-21 20:05:15,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9762 conditions, 1355 events. 773/1355 cut-off events. For 116441/116441 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 7102 event pairs, 151 based on Foata normal form. 1/1355 useless extension candidates. Maximal degree in co-relation 9631. Up to 1252 conditions per place. [2024-06-21 20:05:15,494 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 236 selfloop transitions, 38 changer transitions 0/276 dead transitions. [2024-06-21 20:05:15,494 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 276 transitions, 3629 flow [2024-06-21 20:05:15,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:05:15,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:05:15,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 113 transitions. [2024-06-21 20:05:15,495 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3210227272727273 [2024-06-21 20:05:15,495 INFO L175 Difference]: Start difference. First operand has 268 places, 262 transitions, 3030 flow. Second operand 11 states and 113 transitions. [2024-06-21 20:05:15,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 276 transitions, 3629 flow [2024-06-21 20:05:15,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 276 transitions, 3483 flow, removed 36 selfloop flow, removed 7 redundant places. [2024-06-21 20:05:15,804 INFO L231 Difference]: Finished difference. Result has 272 places, 262 transitions, 2968 flow [2024-06-21 20:05:15,805 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2884, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2968, PETRI_PLACES=272, PETRI_TRANSITIONS=262} [2024-06-21 20:05:15,805 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 241 predicate places. [2024-06-21 20:05:15,805 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 262 transitions, 2968 flow [2024-06-21 20:05:15,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 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) [2024-06-21 20:05:15,805 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:05:15,805 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:05:15,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-21 20:05:15,805 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)] === [2024-06-21 20:05:15,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:05:15,806 INFO L85 PathProgramCache]: Analyzing trace with hash 601756109, now seen corresponding path program 15 times [2024-06-21 20:05:15,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:05:15,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578722928] [2024-06-21 20:05:15,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:05:15,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:05:15,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:05:16,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:05:16,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:05:16,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578722928] [2024-06-21 20:05:16,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578722928] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:05:16,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:05:16,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 20:05:16,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186575191] [2024-06-21 20:05:16,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:05:16,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 20:05:16,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:05:16,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 20:05:16,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-21 20:05:16,976 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:05:16,976 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 262 transitions, 2968 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 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) [2024-06-21 20:05:16,976 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:05:16,976 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:05:16,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:05:17,608 INFO L124 PetriNetUnfolderBase]: 799/1397 cut-off events. [2024-06-21 20:05:17,609 INFO L125 PetriNetUnfolderBase]: For 134671/134673 co-relation queries the response was YES. [2024-06-21 20:05:17,620 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10378 conditions, 1397 events. 799/1397 cut-off events. For 134671/134673 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 7334 event pairs, 65 based on Foata normal form. 2/1398 useless extension candidates. Maximal degree in co-relation 10246. Up to 558 conditions per place. [2024-06-21 20:05:17,623 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 161 selfloop transitions, 131 changer transitions 0/294 dead transitions. [2024-06-21 20:05:17,623 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 294 transitions, 4366 flow [2024-06-21 20:05:17,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 20:05:17,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 20:05:17,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-21 20:05:17,624 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39375 [2024-06-21 20:05:17,625 INFO L175 Difference]: Start difference. First operand has 272 places, 262 transitions, 2968 flow. Second operand 10 states and 126 transitions. [2024-06-21 20:05:17,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 294 transitions, 4366 flow [2024-06-21 20:05:18,154 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 294 transitions, 4223 flow, removed 18 selfloop flow, removed 10 redundant places. [2024-06-21 20:05:18,157 INFO L231 Difference]: Finished difference. Result has 272 places, 271 transitions, 3330 flow [2024-06-21 20:05:18,157 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2831, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3330, PETRI_PLACES=272, PETRI_TRANSITIONS=271} [2024-06-21 20:05:18,157 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 241 predicate places. [2024-06-21 20:05:18,157 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 271 transitions, 3330 flow [2024-06-21 20:05:18,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 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) [2024-06-21 20:05:18,158 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:05:18,158 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:05:18,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-21 20:05:18,158 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)] === [2024-06-21 20:05:18,158 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:05:18,158 INFO L85 PathProgramCache]: Analyzing trace with hash 1940037425, now seen corresponding path program 16 times [2024-06-21 20:05:18,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:05:18,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737093754] [2024-06-21 20:05:18,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:05:18,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:05:18,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:05:19,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:05:19,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:05:19,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737093754] [2024-06-21 20:05:19,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737093754] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:05:19,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:05:19,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 20:05:19,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619074915] [2024-06-21 20:05:19,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:05:19,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 20:05:19,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:05:19,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 20:05:19,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-21 20:05:19,307 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:05:19,307 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 271 transitions, 3330 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 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) [2024-06-21 20:05:19,307 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:05:19,307 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:05:19,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:05:19,943 INFO L124 PetriNetUnfolderBase]: 795/1391 cut-off events. [2024-06-21 20:05:19,943 INFO L125 PetriNetUnfolderBase]: For 128247/128249 co-relation queries the response was YES. [2024-06-21 20:05:19,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10392 conditions, 1391 events. 795/1391 cut-off events. For 128247/128249 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 7300 event pairs, 60 based on Foata normal form. 2/1392 useless extension candidates. Maximal degree in co-relation 10259. Up to 570 conditions per place. [2024-06-21 20:05:19,959 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 159 selfloop transitions, 130 changer transitions 0/291 dead transitions. [2024-06-21 20:05:19,959 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 291 transitions, 4314 flow [2024-06-21 20:05:19,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 20:05:19,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 20:05:19,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-21 20:05:19,960 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.384375 [2024-06-21 20:05:19,960 INFO L175 Difference]: Start difference. First operand has 272 places, 271 transitions, 3330 flow. Second operand 10 states and 123 transitions. [2024-06-21 20:05:19,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 291 transitions, 4314 flow [2024-06-21 20:05:20,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 291 transitions, 4085 flow, removed 71 selfloop flow, removed 4 redundant places. [2024-06-21 20:05:20,335 INFO L231 Difference]: Finished difference. Result has 278 places, 271 transitions, 3366 flow [2024-06-21 20:05:20,335 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3101, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=130, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3366, PETRI_PLACES=278, PETRI_TRANSITIONS=271} [2024-06-21 20:05:20,335 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 247 predicate places. [2024-06-21 20:05:20,335 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 271 transitions, 3366 flow [2024-06-21 20:05:20,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 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) [2024-06-21 20:05:20,336 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:05:20,336 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:05:20,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-21 20:05:20,336 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)] === [2024-06-21 20:05:20,336 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:05:20,336 INFO L85 PathProgramCache]: Analyzing trace with hash -510209369, now seen corresponding path program 17 times [2024-06-21 20:05:20,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:05:20,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616188929] [2024-06-21 20:05:20,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:05:20,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:05:20,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:05:21,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:05:21,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:05:21,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616188929] [2024-06-21 20:05:21,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616188929] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:05:21,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:05:21,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 20:05:21,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482752825] [2024-06-21 20:05:21,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:05:21,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 20:05:21,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:05:21,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 20:05:21,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-21 20:05:21,974 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:05:21,974 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 271 transitions, 3366 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 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) [2024-06-21 20:05:21,974 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:05:21,974 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:05:21,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:05:22,705 INFO L124 PetriNetUnfolderBase]: 791/1385 cut-off events. [2024-06-21 20:05:22,705 INFO L125 PetriNetUnfolderBase]: For 122145/122147 co-relation queries the response was YES. [2024-06-21 20:05:22,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10238 conditions, 1385 events. 791/1385 cut-off events. For 122145/122147 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 7283 event pairs, 111 based on Foata normal form. 2/1386 useless extension candidates. Maximal degree in co-relation 10103. Up to 1121 conditions per place. [2024-06-21 20:05:22,719 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 218 selfloop transitions, 69 changer transitions 0/289 dead transitions. [2024-06-21 20:05:22,719 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 289 transitions, 4000 flow [2024-06-21 20:05:22,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 20:05:22,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 20:05:22,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 117 transitions. [2024-06-21 20:05:22,720 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.365625 [2024-06-21 20:05:22,721 INFO L175 Difference]: Start difference. First operand has 278 places, 271 transitions, 3366 flow. Second operand 10 states and 117 transitions. [2024-06-21 20:05:22,721 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 289 transitions, 4000 flow [2024-06-21 20:05:23,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 289 transitions, 3701 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-06-21 20:05:23,170 INFO L231 Difference]: Finished difference. Result has 279 places, 271 transitions, 3213 flow [2024-06-21 20:05:23,170 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3067, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3213, PETRI_PLACES=279, PETRI_TRANSITIONS=271} [2024-06-21 20:05:23,171 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 248 predicate places. [2024-06-21 20:05:23,171 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 271 transitions, 3213 flow [2024-06-21 20:05:23,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 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) [2024-06-21 20:05:23,171 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:05:23,171 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:05:23,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-21 20:05:23,172 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)] === [2024-06-21 20:05:23,172 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:05:23,172 INFO L85 PathProgramCache]: Analyzing trace with hash -2040963731, now seen corresponding path program 18 times [2024-06-21 20:05:23,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:05:23,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305679260] [2024-06-21 20:05:23,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:05:23,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:05:23,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:05:24,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:05:24,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:05:24,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305679260] [2024-06-21 20:05:24,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305679260] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:05:24,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:05:24,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 20:05:24,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700239759] [2024-06-21 20:05:24,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:05:24,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 20:05:24,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:05:24,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 20:05:24,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-21 20:05:24,578 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:05:24,579 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 271 transitions, 3213 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 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) [2024-06-21 20:05:24,579 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:05:24,579 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:05:24,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:05:25,073 INFO L124 PetriNetUnfolderBase]: 793/1388 cut-off events. [2024-06-21 20:05:25,073 INFO L125 PetriNetUnfolderBase]: For 124240/124240 co-relation queries the response was YES. [2024-06-21 20:05:25,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9911 conditions, 1388 events. 793/1388 cut-off events. For 124240/124240 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 7291 event pairs, 206 based on Foata normal form. 4/1391 useless extension candidates. Maximal degree in co-relation 9775. Up to 1318 conditions per place. [2024-06-21 20:05:25,087 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 262 selfloop transitions, 23 changer transitions 0/287 dead transitions. [2024-06-21 20:05:25,087 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 287 transitions, 4039 flow [2024-06-21 20:05:25,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 20:05:25,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 20:05:25,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-21 20:05:25,088 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33125 [2024-06-21 20:05:25,088 INFO L175 Difference]: Start difference. First operand has 279 places, 271 transitions, 3213 flow. Second operand 10 states and 106 transitions. [2024-06-21 20:05:25,088 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 287 transitions, 4039 flow [2024-06-21 20:05:25,483 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 287 transitions, 3825 flow, removed 29 selfloop flow, removed 10 redundant places. [2024-06-21 20:05:25,486 INFO L231 Difference]: Finished difference. Result has 280 places, 273 transitions, 3106 flow [2024-06-21 20:05:25,487 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3001, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3106, PETRI_PLACES=280, PETRI_TRANSITIONS=273} [2024-06-21 20:05:25,487 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 249 predicate places. [2024-06-21 20:05:25,487 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 273 transitions, 3106 flow [2024-06-21 20:05:25,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 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) [2024-06-21 20:05:25,487 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:05:25,487 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:05:25,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-21 20:05:25,488 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)] === [2024-06-21 20:05:25,488 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:05:25,488 INFO L85 PathProgramCache]: Analyzing trace with hash -2029911921, now seen corresponding path program 4 times [2024-06-21 20:05:25,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:05:25,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399682834] [2024-06-21 20:05:25,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:05:25,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:05:25,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:05:26,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:05:26,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:05:26,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399682834] [2024-06-21 20:05:26,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399682834] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:05:26,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:05:26,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 20:05:26,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751285625] [2024-06-21 20:05:26,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:05:26,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 20:05:26,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:05:26,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 20:05:26,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-21 20:05:26,584 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:05:26,584 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 273 transitions, 3106 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:05:26,584 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:05:26,584 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:05:26,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:05:27,003 INFO L124 PetriNetUnfolderBase]: 801/1404 cut-off events. [2024-06-21 20:05:27,003 INFO L125 PetriNetUnfolderBase]: For 123673/123673 co-relation queries the response was YES. [2024-06-21 20:05:27,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9792 conditions, 1404 events. 801/1404 cut-off events. For 123673/123673 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 7413 event pairs, 208 based on Foata normal form. 4/1407 useless extension candidates. Maximal degree in co-relation 9655. Up to 1343 conditions per place. [2024-06-21 20:05:27,024 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 265 selfloop transitions, 20 changer transitions 0/287 dead transitions. [2024-06-21 20:05:27,025 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 287 transitions, 3740 flow [2024-06-21 20:05:27,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 20:05:27,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 20:05:27,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 102 transitions. [2024-06-21 20:05:27,026 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31875 [2024-06-21 20:05:27,026 INFO L175 Difference]: Start difference. First operand has 280 places, 273 transitions, 3106 flow. Second operand 10 states and 102 transitions. [2024-06-21 20:05:27,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 287 transitions, 3740 flow [2024-06-21 20:05:27,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 287 transitions, 3690 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-21 20:05:27,595 INFO L231 Difference]: Finished difference. Result has 282 places, 274 transitions, 3126 flow [2024-06-21 20:05:27,595 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3056, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3126, PETRI_PLACES=282, PETRI_TRANSITIONS=274} [2024-06-21 20:05:27,595 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 251 predicate places. [2024-06-21 20:05:27,595 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 274 transitions, 3126 flow [2024-06-21 20:05:27,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:05:27,595 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:05:27,596 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:05:27,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-21 20:05:27,596 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)] === [2024-06-21 20:05:27,596 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:05:27,596 INFO L85 PathProgramCache]: Analyzing trace with hash 927152569, now seen corresponding path program 5 times [2024-06-21 20:05:27,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:05:27,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128480042] [2024-06-21 20:05:27,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:05:27,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:05:27,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:05:28,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:05:28,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:05:28,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128480042] [2024-06-21 20:05:28,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128480042] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:05:28,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:05:28,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 20:05:28,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254464924] [2024-06-21 20:05:28,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:05:28,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 20:05:28,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:05:28,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 20:05:28,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-21 20:05:28,811 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:05:28,811 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 274 transitions, 3126 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:05:28,812 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:05:28,812 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:05:28,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:05:29,298 INFO L124 PetriNetUnfolderBase]: 823/1446 cut-off events. [2024-06-21 20:05:29,299 INFO L125 PetriNetUnfolderBase]: For 142541/142541 co-relation queries the response was YES. [2024-06-21 20:05:29,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10384 conditions, 1446 events. 823/1446 cut-off events. For 142541/142541 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 7681 event pairs, 210 based on Foata normal form. 4/1449 useless extension candidates. Maximal degree in co-relation 10246. Up to 1339 conditions per place. [2024-06-21 20:05:29,313 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 269 selfloop transitions, 20 changer transitions 0/291 dead transitions. [2024-06-21 20:05:29,313 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 291 transitions, 3976 flow [2024-06-21 20:05:29,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 20:05:29,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 20:05:29,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 102 transitions. [2024-06-21 20:05:29,314 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31875 [2024-06-21 20:05:29,314 INFO L175 Difference]: Start difference. First operand has 282 places, 274 transitions, 3126 flow. Second operand 10 states and 102 transitions. [2024-06-21 20:05:29,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 291 transitions, 3976 flow [2024-06-21 20:05:29,727 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 291 transitions, 3916 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-21 20:05:29,731 INFO L231 Difference]: Finished difference. Result has 284 places, 276 transitions, 3164 flow [2024-06-21 20:05:29,731 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3066, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3164, PETRI_PLACES=284, PETRI_TRANSITIONS=276} [2024-06-21 20:05:29,731 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 253 predicate places. [2024-06-21 20:05:29,731 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 276 transitions, 3164 flow [2024-06-21 20:05:29,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:05:29,732 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:05:29,732 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:05:29,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-21 20:05:29,732 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)] === [2024-06-21 20:05:29,732 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:05:29,732 INFO L85 PathProgramCache]: Analyzing trace with hash 602025499, now seen corresponding path program 6 times [2024-06-21 20:05:29,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:05:29,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738834243] [2024-06-21 20:05:29,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:05:29,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:05:29,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:05:31,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:05:31,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:05:31,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738834243] [2024-06-21 20:05:31,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738834243] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:05:31,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:05:31,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 20:05:31,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228379248] [2024-06-21 20:05:31,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:05:31,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 20:05:31,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:05:31,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 20:05:31,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-21 20:05:31,781 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:05:31,782 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 276 transitions, 3164 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 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) [2024-06-21 20:05:31,782 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:05:31,782 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:05:31,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:05:32,504 INFO L124 PetriNetUnfolderBase]: 824/1450 cut-off events. [2024-06-21 20:05:32,504 INFO L125 PetriNetUnfolderBase]: For 138065/138067 co-relation queries the response was YES. [2024-06-21 20:05:32,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10270 conditions, 1450 events. 824/1450 cut-off events. For 138065/138067 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 7752 event pairs, 122 based on Foata normal form. 4/1453 useless extension candidates. Maximal degree in co-relation 10131. Up to 1168 conditions per place. [2024-06-21 20:05:32,517 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 220 selfloop transitions, 72 changer transitions 0/294 dead transitions. [2024-06-21 20:05:32,517 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 294 transitions, 3836 flow [2024-06-21 20:05:32,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:05:32,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:05:32,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-21 20:05:32,518 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3409090909090909 [2024-06-21 20:05:32,518 INFO L175 Difference]: Start difference. First operand has 284 places, 276 transitions, 3164 flow. Second operand 11 states and 120 transitions. [2024-06-21 20:05:32,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 294 transitions, 3836 flow [2024-06-21 20:05:32,962 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 294 transitions, 3783 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-06-21 20:05:32,966 INFO L231 Difference]: Finished difference. Result has 289 places, 277 transitions, 3289 flow [2024-06-21 20:05:32,966 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3111, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3289, PETRI_PLACES=289, PETRI_TRANSITIONS=277} [2024-06-21 20:05:32,966 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 258 predicate places. [2024-06-21 20:05:32,966 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 277 transitions, 3289 flow [2024-06-21 20:05:32,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 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) [2024-06-21 20:05:32,966 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:05:32,967 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:05:32,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-21 20:05:32,967 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)] === [2024-06-21 20:05:32,967 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:05:32,967 INFO L85 PathProgramCache]: Analyzing trace with hash 915724729, now seen corresponding path program 7 times [2024-06-21 20:05:32,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:05:32,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578608761] [2024-06-21 20:05:32,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:05:32,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:05:32,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:05:34,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:05:34,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:05:34,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578608761] [2024-06-21 20:05:34,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578608761] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:05:34,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:05:34,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 20:05:34,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040572097] [2024-06-21 20:05:34,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:05:34,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 20:05:34,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:05:34,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 20:05:34,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-21 20:05:34,982 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:05:34,982 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 277 transitions, 3289 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 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) [2024-06-21 20:05:34,982 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:05:34,982 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:05:34,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:05:35,529 INFO L124 PetriNetUnfolderBase]: 818/1439 cut-off events. [2024-06-21 20:05:35,529 INFO L125 PetriNetUnfolderBase]: For 124704/124704 co-relation queries the response was YES. [2024-06-21 20:05:35,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10007 conditions, 1439 events. 818/1439 cut-off events. For 124704/124704 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 7711 event pairs, 213 based on Foata normal form. 4/1442 useless extension candidates. Maximal degree in co-relation 9866. Up to 1362 conditions per place. [2024-06-21 20:05:35,543 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 268 selfloop transitions, 21 changer transitions 0/291 dead transitions. [2024-06-21 20:05:35,544 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 291 transitions, 3909 flow [2024-06-21 20:05:35,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:05:35,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:05:35,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 109 transitions. [2024-06-21 20:05:35,546 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3096590909090909 [2024-06-21 20:05:35,546 INFO L175 Difference]: Start difference. First operand has 289 places, 277 transitions, 3289 flow. Second operand 11 states and 109 transitions. [2024-06-21 20:05:35,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 291 transitions, 3909 flow [2024-06-21 20:05:35,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 291 transitions, 3727 flow, removed 20 selfloop flow, removed 9 redundant places. [2024-06-21 20:05:35,963 INFO L231 Difference]: Finished difference. Result has 291 places, 277 transitions, 3155 flow [2024-06-21 20:05:35,964 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3107, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3155, PETRI_PLACES=291, PETRI_TRANSITIONS=277} [2024-06-21 20:05:35,964 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 260 predicate places. [2024-06-21 20:05:35,964 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 277 transitions, 3155 flow [2024-06-21 20:05:35,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 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) [2024-06-21 20:05:35,964 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:05:35,964 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:05:35,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-21 20:05:35,965 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)] === [2024-06-21 20:05:35,965 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:05:35,965 INFO L85 PathProgramCache]: Analyzing trace with hash 229930313, now seen corresponding path program 12 times [2024-06-21 20:05:35,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:05:35,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538286644] [2024-06-21 20:05:35,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:05:35,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:05:35,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:05:36,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:05:36,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:05:36,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538286644] [2024-06-21 20:05:36,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538286644] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:05:36,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:05:36,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 20:05:36,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013110905] [2024-06-21 20:05:36,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:05:36,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 20:05:36,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:05:36,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 20:05:36,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-21 20:05:36,848 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:05:36,848 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 277 transitions, 3155 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 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) [2024-06-21 20:05:36,848 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:05:36,848 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:05:36,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:05:37,413 INFO L124 PetriNetUnfolderBase]: 852/1505 cut-off events. [2024-06-21 20:05:37,413 INFO L125 PetriNetUnfolderBase]: For 118842/118842 co-relation queries the response was YES. [2024-06-21 20:05:37,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10206 conditions, 1505 events. 852/1505 cut-off events. For 118842/118842 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 8169 event pairs, 142 based on Foata normal form. 2/1506 useless extension candidates. Maximal degree in co-relation 10064. Up to 1390 conditions per place. [2024-06-21 20:05:37,427 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 281 selfloop transitions, 27 changer transitions 0/310 dead transitions. [2024-06-21 20:05:37,427 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 310 transitions, 3979 flow [2024-06-21 20:05:37,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:05:37,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:05:37,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 119 transitions. [2024-06-21 20:05:37,428 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3380681818181818 [2024-06-21 20:05:37,428 INFO L175 Difference]: Start difference. First operand has 291 places, 277 transitions, 3155 flow. Second operand 11 states and 119 transitions. [2024-06-21 20:05:37,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 310 transitions, 3979 flow [2024-06-21 20:05:37,957 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 310 transitions, 3935 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-21 20:05:37,961 INFO L231 Difference]: Finished difference. Result has 295 places, 287 transitions, 3336 flow [2024-06-21 20:05:37,962 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3111, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3336, PETRI_PLACES=295, PETRI_TRANSITIONS=287} [2024-06-21 20:05:37,962 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 264 predicate places. [2024-06-21 20:05:37,962 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 287 transitions, 3336 flow [2024-06-21 20:05:37,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 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) [2024-06-21 20:05:37,962 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:05:37,963 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:05:37,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-21 20:05:37,963 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)] === [2024-06-21 20:05:37,963 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:05:37,964 INFO L85 PathProgramCache]: Analyzing trace with hash -270049831, now seen corresponding path program 19 times [2024-06-21 20:05:37,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:05:37,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919116960] [2024-06-21 20:05:37,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:05:37,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:05:37,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:05:39,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:05:39,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:05:39,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919116960] [2024-06-21 20:05:39,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919116960] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:05:39,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:05:39,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 20:05:39,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216037469] [2024-06-21 20:05:39,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:05:39,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 20:05:39,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:05:39,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 20:05:39,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-21 20:05:39,224 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:05:39,224 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 287 transitions, 3336 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 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) [2024-06-21 20:05:39,224 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:05:39,224 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:05:39,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:05:39,917 INFO L124 PetriNetUnfolderBase]: 848/1499 cut-off events. [2024-06-21 20:05:39,917 INFO L125 PetriNetUnfolderBase]: For 113333/113333 co-relation queries the response was YES. [2024-06-21 20:05:39,928 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10078 conditions, 1499 events. 848/1499 cut-off events. For 113333/113333 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 8149 event pairs, 122 based on Foata normal form. 2/1500 useless extension candidates. Maximal degree in co-relation 9932. Up to 1214 conditions per place. [2024-06-21 20:05:39,932 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 237 selfloop transitions, 78 changer transitions 0/317 dead transitions. [2024-06-21 20:05:39,932 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 317 transitions, 4283 flow [2024-06-21 20:05:39,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:05:39,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:05:39,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-21 20:05:39,933 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3693181818181818 [2024-06-21 20:05:39,933 INFO L175 Difference]: Start difference. First operand has 295 places, 287 transitions, 3336 flow. Second operand 11 states and 130 transitions. [2024-06-21 20:05:39,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 317 transitions, 4283 flow [2024-06-21 20:05:40,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 317 transitions, 4159 flow, removed 36 selfloop flow, removed 6 redundant places. [2024-06-21 20:05:40,363 INFO L231 Difference]: Finished difference. Result has 300 places, 287 transitions, 3374 flow [2024-06-21 20:05:40,363 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3212, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3374, PETRI_PLACES=300, PETRI_TRANSITIONS=287} [2024-06-21 20:05:40,364 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 269 predicate places. [2024-06-21 20:05:40,364 INFO L495 AbstractCegarLoop]: Abstraction has has 300 places, 287 transitions, 3374 flow [2024-06-21 20:05:40,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 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) [2024-06-21 20:05:40,364 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:05:40,364 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:05:40,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-21 20:05:40,364 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)] === [2024-06-21 20:05:40,365 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:05:40,365 INFO L85 PathProgramCache]: Analyzing trace with hash -1041516181, now seen corresponding path program 13 times [2024-06-21 20:05:40,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:05:40,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128197560] [2024-06-21 20:05:40,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:05:40,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:05:40,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:05:41,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:05:41,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:05:41,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128197560] [2024-06-21 20:05:41,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128197560] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:05:41,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:05:41,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 20:05:41,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801466806] [2024-06-21 20:05:41,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:05:41,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 20:05:41,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:05:41,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 20:05:41,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-21 20:05:41,386 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:05:41,386 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 287 transitions, 3374 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 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) [2024-06-21 20:05:41,386 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:05:41,386 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:05:41,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:05:41,936 INFO L124 PetriNetUnfolderBase]: 861/1528 cut-off events. [2024-06-21 20:05:41,936 INFO L125 PetriNetUnfolderBase]: For 115573/115573 co-relation queries the response was YES. [2024-06-21 20:05:41,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10277 conditions, 1528 events. 861/1528 cut-off events. For 115573/115573 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 8394 event pairs, 155 based on Foata normal form. 2/1529 useless extension candidates. Maximal degree in co-relation 10131. Up to 1393 conditions per place. [2024-06-21 20:05:41,952 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 275 selfloop transitions, 36 changer transitions 0/313 dead transitions. [2024-06-21 20:05:41,952 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 313 transitions, 4110 flow [2024-06-21 20:05:41,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 20:05:41,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 20:05:41,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 126 transitions. [2024-06-21 20:05:41,953 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.328125 [2024-06-21 20:05:41,953 INFO L175 Difference]: Start difference. First operand has 300 places, 287 transitions, 3374 flow. Second operand 12 states and 126 transitions. [2024-06-21 20:05:41,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 313 transitions, 4110 flow [2024-06-21 20:05:42,387 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 313 transitions, 3884 flow, removed 30 selfloop flow, removed 10 redundant places. [2024-06-21 20:05:42,391 INFO L231 Difference]: Finished difference. Result has 304 places, 290 transitions, 3289 flow [2024-06-21 20:05:42,391 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3148, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3289, PETRI_PLACES=304, PETRI_TRANSITIONS=290} [2024-06-21 20:05:42,391 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 273 predicate places. [2024-06-21 20:05:42,391 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 290 transitions, 3289 flow [2024-06-21 20:05:42,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 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) [2024-06-21 20:05:42,391 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:05:42,391 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:05:42,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-21 20:05:42,392 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)] === [2024-06-21 20:05:42,392 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:05:42,392 INFO L85 PathProgramCache]: Analyzing trace with hash -373378281, now seen corresponding path program 14 times [2024-06-21 20:05:42,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:05:42,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559103934] [2024-06-21 20:05:42,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:05:42,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:05:42,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:05:43,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:05:43,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:05:43,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559103934] [2024-06-21 20:05:43,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559103934] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:05:43,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:05:43,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 20:05:43,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398334077] [2024-06-21 20:05:43,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:05:43,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 20:05:43,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:05:43,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 20:05:43,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-21 20:05:43,327 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:05:43,327 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 290 transitions, 3289 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 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) [2024-06-21 20:05:43,327 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:05:43,327 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:05:43,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:05:43,898 INFO L124 PetriNetUnfolderBase]: 858/1523 cut-off events. [2024-06-21 20:05:43,898 INFO L125 PetriNetUnfolderBase]: For 107459/107459 co-relation queries the response was YES. [2024-06-21 20:05:43,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9861 conditions, 1523 events. 858/1523 cut-off events. For 107459/107459 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 8350 event pairs, 138 based on Foata normal form. 2/1524 useless extension candidates. Maximal degree in co-relation 9714. Up to 1313 conditions per place. [2024-06-21 20:05:43,913 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 267 selfloop transitions, 41 changer transitions 0/310 dead transitions. [2024-06-21 20:05:43,913 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 310 transitions, 3955 flow [2024-06-21 20:05:43,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:05:43,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:05:43,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 114 transitions. [2024-06-21 20:05:43,914 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32386363636363635 [2024-06-21 20:05:43,914 INFO L175 Difference]: Start difference. First operand has 304 places, 290 transitions, 3289 flow. Second operand 11 states and 114 transitions. [2024-06-21 20:05:43,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 310 transitions, 3955 flow [2024-06-21 20:05:44,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 310 transitions, 3819 flow, removed 28 selfloop flow, removed 9 redundant places. [2024-06-21 20:05:44,443 INFO L231 Difference]: Finished difference. Result has 306 places, 290 transitions, 3239 flow [2024-06-21 20:05:44,443 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3153, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3239, PETRI_PLACES=306, PETRI_TRANSITIONS=290} [2024-06-21 20:05:44,444 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 275 predicate places. [2024-06-21 20:05:44,444 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 290 transitions, 3239 flow [2024-06-21 20:05:44,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 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) [2024-06-21 20:05:44,444 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:05:44,444 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:05:44,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-21 20:05:44,445 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)] === [2024-06-21 20:05:44,445 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:05:44,445 INFO L85 PathProgramCache]: Analyzing trace with hash -1866224729, now seen corresponding path program 1 times [2024-06-21 20:05:44,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:05:44,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471199849] [2024-06-21 20:05:44,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:05:44,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:05:44,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:05:45,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:05:45,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:05:45,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471199849] [2024-06-21 20:05:45,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471199849] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:05:45,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:05:45,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 20:05:45,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685035048] [2024-06-21 20:05:45,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:05:45,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 20:05:45,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:05:45,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 20:05:45,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-21 20:05:45,722 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:05:45,722 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 290 transitions, 3239 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-21 20:05:45,722 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:05:45,722 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:05:45,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:05:46,327 INFO L124 PetriNetUnfolderBase]: 862/1531 cut-off events. [2024-06-21 20:05:46,327 INFO L125 PetriNetUnfolderBase]: For 110668/110668 co-relation queries the response was YES. [2024-06-21 20:05:46,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9836 conditions, 1531 events. 862/1531 cut-off events. For 110668/110668 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 8447 event pairs, 169 based on Foata normal form. 2/1532 useless extension candidates. Maximal degree in co-relation 9690. Up to 1368 conditions per place. [2024-06-21 20:05:46,344 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 258 selfloop transitions, 48 changer transitions 0/308 dead transitions. [2024-06-21 20:05:46,345 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 308 transitions, 3911 flow [2024-06-21 20:05:46,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 20:05:46,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 20:05:46,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-21 20:05:46,345 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.334375 [2024-06-21 20:05:46,345 INFO L175 Difference]: Start difference. First operand has 306 places, 290 transitions, 3239 flow. Second operand 10 states and 107 transitions. [2024-06-21 20:05:46,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 308 transitions, 3911 flow [2024-06-21 20:05:46,858 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 308 transitions, 3709 flow, removed 25 selfloop flow, removed 15 redundant places. [2024-06-21 20:05:46,862 INFO L231 Difference]: Finished difference. Result has 301 places, 291 transitions, 3156 flow [2024-06-21 20:05:46,862 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3037, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3156, PETRI_PLACES=301, PETRI_TRANSITIONS=291} [2024-06-21 20:05:46,862 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 270 predicate places. [2024-06-21 20:05:46,863 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 291 transitions, 3156 flow [2024-06-21 20:05:46,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-21 20:05:46,863 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:05:46,863 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:05:46,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-21 20:05:46,863 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)] === [2024-06-21 20:05:46,863 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:05:46,863 INFO L85 PathProgramCache]: Analyzing trace with hash 70725147, now seen corresponding path program 2 times [2024-06-21 20:05:46,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:05:46,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126786579] [2024-06-21 20:05:46,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:05:46,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:05:46,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:05:47,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:05:47,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:05:47,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126786579] [2024-06-21 20:05:47,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126786579] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:05:47,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:05:47,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 20:05:47,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839708360] [2024-06-21 20:05:47,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:05:47,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 20:05:47,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:05:47,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 20:05:47,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-21 20:05:48,009 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:05:48,009 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 291 transitions, 3156 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-21 20:05:48,009 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:05:48,009 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:05:48,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:05:48,545 INFO L124 PetriNetUnfolderBase]: 866/1539 cut-off events. [2024-06-21 20:05:48,546 INFO L125 PetriNetUnfolderBase]: For 112124/112124 co-relation queries the response was YES. [2024-06-21 20:05:48,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9708 conditions, 1539 events. 866/1539 cut-off events. For 112124/112124 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 8531 event pairs, 169 based on Foata normal form. 2/1540 useless extension candidates. Maximal degree in co-relation 9568. Up to 1390 conditions per place. [2024-06-21 20:05:48,561 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 266 selfloop transitions, 41 changer transitions 0/309 dead transitions. [2024-06-21 20:05:48,561 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 309 transitions, 3830 flow [2024-06-21 20:05:48,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 20:05:48,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 20:05:48,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-21 20:05:48,562 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33125 [2024-06-21 20:05:48,562 INFO L175 Difference]: Start difference. First operand has 301 places, 291 transitions, 3156 flow. Second operand 10 states and 106 transitions. [2024-06-21 20:05:48,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 309 transitions, 3830 flow [2024-06-21 20:05:48,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 309 transitions, 3656 flow, removed 8 selfloop flow, removed 10 redundant places. [2024-06-21 20:05:48,999 INFO L231 Difference]: Finished difference. Result has 301 places, 292 transitions, 3086 flow [2024-06-21 20:05:48,999 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2982, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3086, PETRI_PLACES=301, PETRI_TRANSITIONS=292} [2024-06-21 20:05:48,999 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 270 predicate places. [2024-06-21 20:05:48,999 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 292 transitions, 3086 flow [2024-06-21 20:05:49,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-21 20:05:49,000 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:05:49,000 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:05:49,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-21 20:05:49,000 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)] === [2024-06-21 20:05:49,000 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:05:49,001 INFO L85 PathProgramCache]: Analyzing trace with hash -1866344699, now seen corresponding path program 3 times [2024-06-21 20:05:49,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:05:49,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69074534] [2024-06-21 20:05:49,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:05:49,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:05:49,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:05:49,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:05:49,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:05:49,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69074534] [2024-06-21 20:05:49,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69074534] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:05:49,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:05:49,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 20:05:49,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670148930] [2024-06-21 20:05:49,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:05:49,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 20:05:49,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:05:49,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 20:05:49,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-21 20:05:50,043 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:05:50,044 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 292 transitions, 3086 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-21 20:05:50,044 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:05:50,044 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:05:50,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:05:50,570 INFO L124 PetriNetUnfolderBase]: 870/1547 cut-off events. [2024-06-21 20:05:50,570 INFO L125 PetriNetUnfolderBase]: For 114360/114360 co-relation queries the response was YES. [2024-06-21 20:05:50,582 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9570 conditions, 1547 events. 870/1547 cut-off events. For 114360/114360 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 8564 event pairs, 168 based on Foata normal form. 2/1548 useless extension candidates. Maximal degree in co-relation 9431. Up to 1398 conditions per place. [2024-06-21 20:05:50,586 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 272 selfloop transitions, 36 changer transitions 0/310 dead transitions. [2024-06-21 20:05:50,586 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 310 transitions, 3762 flow [2024-06-21 20:05:50,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 20:05:50,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 20:05:50,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 105 transitions. [2024-06-21 20:05:50,587 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.328125 [2024-06-21 20:05:50,587 INFO L175 Difference]: Start difference. First operand has 301 places, 292 transitions, 3086 flow. Second operand 10 states and 105 transitions. [2024-06-21 20:05:50,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 310 transitions, 3762 flow [2024-06-21 20:05:50,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 310 transitions, 3668 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-21 20:05:50,973 INFO L231 Difference]: Finished difference. Result has 303 places, 293 transitions, 3088 flow [2024-06-21 20:05:50,974 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2992, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3088, PETRI_PLACES=303, PETRI_TRANSITIONS=293} [2024-06-21 20:05:50,974 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 272 predicate places. [2024-06-21 20:05:50,974 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 293 transitions, 3088 flow [2024-06-21 20:05:50,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-21 20:05:50,974 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:05:50,974 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:05:50,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-21 20:05:50,974 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)] === [2024-06-21 20:05:50,975 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:05:50,975 INFO L85 PathProgramCache]: Analyzing trace with hash -1924437149, now seen corresponding path program 4 times [2024-06-21 20:05:50,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:05:50,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176388042] [2024-06-21 20:05:50,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:05:50,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:05:50,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:05:52,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:05:52,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:05:52,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176388042] [2024-06-21 20:05:52,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176388042] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:05:52,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:05:52,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 20:05:52,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250364160] [2024-06-21 20:05:52,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:05:52,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 20:05:52,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:05:52,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 20:05:52,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-21 20:05:52,114 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:05:52,114 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 293 transitions, 3088 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-21 20:05:52,114 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:05:52,114 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:05:52,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:05:52,641 INFO L124 PetriNetUnfolderBase]: 874/1555 cut-off events. [2024-06-21 20:05:52,641 INFO L125 PetriNetUnfolderBase]: For 115066/115066 co-relation queries the response was YES. [2024-06-21 20:05:52,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9623 conditions, 1555 events. 874/1555 cut-off events. For 115066/115066 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 8615 event pairs, 137 based on Foata normal form. 2/1556 useless extension candidates. Maximal degree in co-relation 9483. Up to 1301 conditions per place. [2024-06-21 20:05:52,656 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 264 selfloop transitions, 47 changer transitions 0/313 dead transitions. [2024-06-21 20:05:52,657 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 313 transitions, 3776 flow [2024-06-21 20:05:52,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:05:52,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:05:52,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 113 transitions. [2024-06-21 20:05:52,658 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3210227272727273 [2024-06-21 20:05:52,658 INFO L175 Difference]: Start difference. First operand has 303 places, 293 transitions, 3088 flow. Second operand 11 states and 113 transitions. [2024-06-21 20:05:52,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 313 transitions, 3776 flow [2024-06-21 20:05:53,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 313 transitions, 3690 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-21 20:05:53,101 INFO L231 Difference]: Finished difference. Result has 306 places, 294 transitions, 3125 flow [2024-06-21 20:05:53,101 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3002, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3125, PETRI_PLACES=306, PETRI_TRANSITIONS=294} [2024-06-21 20:05:53,101 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 275 predicate places. [2024-06-21 20:05:53,102 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 294 transitions, 3125 flow [2024-06-21 20:05:53,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-21 20:05:53,102 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:05:53,102 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:05:53,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-21 20:05:53,102 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)] === [2024-06-21 20:05:53,102 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:05:53,102 INFO L85 PathProgramCache]: Analyzing trace with hash 821221567, now seen corresponding path program 1 times [2024-06-21 20:05:53,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:05:53,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651903845] [2024-06-21 20:05:53,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:05:53,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:05:53,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:05:54,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:05:54,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:05:54,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651903845] [2024-06-21 20:05:54,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651903845] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:05:54,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:05:54,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 20:05:54,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049975425] [2024-06-21 20:05:54,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:05:54,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 20:05:54,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:05:54,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 20:05:54,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-21 20:05:54,609 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:05:54,610 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 294 transitions, 3125 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-21 20:05:54,610 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:05:54,610 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:05:54,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:05:55,157 INFO L124 PetriNetUnfolderBase]: 870/1549 cut-off events. [2024-06-21 20:05:55,158 INFO L125 PetriNetUnfolderBase]: For 109497/109497 co-relation queries the response was YES. [2024-06-21 20:05:55,170 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9416 conditions, 1549 events. 870/1549 cut-off events. For 109497/109497 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 8627 event pairs, 173 based on Foata normal form. 2/1550 useless extension candidates. Maximal degree in co-relation 9275. Up to 1376 conditions per place. [2024-06-21 20:05:55,174 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 254 selfloop transitions, 55 changer transitions 0/311 dead transitions. [2024-06-21 20:05:55,174 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 311 transitions, 3791 flow [2024-06-21 20:05:55,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 20:05:55,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 20:05:55,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-21 20:05:55,175 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3375 [2024-06-21 20:05:55,175 INFO L175 Difference]: Start difference. First operand has 306 places, 294 transitions, 3125 flow. Second operand 10 states and 108 transitions. [2024-06-21 20:05:55,175 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 311 transitions, 3791 flow [2024-06-21 20:05:55,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 311 transitions, 3636 flow, removed 33 selfloop flow, removed 9 redundant places. [2024-06-21 20:05:55,569 INFO L231 Difference]: Finished difference. Result has 307 places, 294 transitions, 3094 flow [2024-06-21 20:05:55,569 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2970, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3094, PETRI_PLACES=307, PETRI_TRANSITIONS=294} [2024-06-21 20:05:55,569 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 276 predicate places. [2024-06-21 20:05:55,569 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 294 transitions, 3094 flow [2024-06-21 20:05:55,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-21 20:05:55,570 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:05:55,570 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:05:55,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-21 20:05:55,570 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)] === [2024-06-21 20:05:55,570 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:05:55,570 INFO L85 PathProgramCache]: Analyzing trace with hash 825869955, now seen corresponding path program 1 times [2024-06-21 20:05:55,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:05:55,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206933490] [2024-06-21 20:05:55,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:05:55,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:05:55,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:05:57,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:05:57,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:05:57,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206933490] [2024-06-21 20:05:57,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206933490] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:05:57,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:05:57,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 20:05:57,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044750348] [2024-06-21 20:05:57,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:05:57,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 20:05:57,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:05:57,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 20:05:57,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-21 20:05:57,554 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:05:57,554 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 294 transitions, 3094 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-21 20:05:57,554 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:05:57,554 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:05:57,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:05:58,266 INFO L124 PetriNetUnfolderBase]: 876/1559 cut-off events. [2024-06-21 20:05:58,266 INFO L125 PetriNetUnfolderBase]: For 110736/110736 co-relation queries the response was YES. [2024-06-21 20:05:58,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9457 conditions, 1559 events. 876/1559 cut-off events. For 110736/110736 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 8673 event pairs, 170 based on Foata normal form. 2/1560 useless extension candidates. Maximal degree in co-relation 9315. Up to 1403 conditions per place. [2024-06-21 20:05:58,282 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 273 selfloop transitions, 38 changer transitions 0/313 dead transitions. [2024-06-21 20:05:58,282 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 313 transitions, 3808 flow [2024-06-21 20:05:58,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 20:05:58,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 20:05:58,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-21 20:05:58,283 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.340625 [2024-06-21 20:05:58,283 INFO L175 Difference]: Start difference. First operand has 307 places, 294 transitions, 3094 flow. Second operand 10 states and 109 transitions. [2024-06-21 20:05:58,284 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 313 transitions, 3808 flow [2024-06-21 20:05:58,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 313 transitions, 3640 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-21 20:05:58,764 INFO L231 Difference]: Finished difference. Result has 308 places, 296 transitions, 3058 flow [2024-06-21 20:05:58,764 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2926, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3058, PETRI_PLACES=308, PETRI_TRANSITIONS=296} [2024-06-21 20:05:58,764 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 277 predicate places. [2024-06-21 20:05:58,764 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 296 transitions, 3058 flow [2024-06-21 20:05:58,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-21 20:05:58,764 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:05:58,765 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:05:58,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-21 20:05:58,765 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)] === [2024-06-21 20:05:58,765 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:05:58,765 INFO L85 PathProgramCache]: Analyzing trace with hash 2060972101, now seen corresponding path program 5 times [2024-06-21 20:05:58,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:05:58,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665032542] [2024-06-21 20:05:58,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:05:58,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:05:58,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:05:59,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:05:59,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:05:59,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665032542] [2024-06-21 20:05:59,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665032542] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:05:59,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:05:59,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 20:05:59,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519966747] [2024-06-21 20:05:59,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:05:59,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 20:05:59,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:05:59,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 20:05:59,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-21 20:06:00,113 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:06:00,116 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 296 transitions, 3058 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-21 20:06:00,116 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:06:00,116 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:06:00,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:06:00,667 INFO L124 PetriNetUnfolderBase]: 880/1567 cut-off events. [2024-06-21 20:06:00,667 INFO L125 PetriNetUnfolderBase]: For 113327/113327 co-relation queries the response was YES. [2024-06-21 20:06:00,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9469 conditions, 1567 events. 880/1567 cut-off events. For 113327/113327 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 8733 event pairs, 125 based on Foata normal form. 2/1568 useless extension candidates. Maximal degree in co-relation 9326. Up to 1245 conditions per place. [2024-06-21 20:06:00,683 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 226 selfloop transitions, 88 changer transitions 0/316 dead transitions. [2024-06-21 20:06:00,683 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 316 transitions, 3768 flow [2024-06-21 20:06:00,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 20:06:00,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 20:06:00,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 114 transitions. [2024-06-21 20:06:00,684 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35625 [2024-06-21 20:06:00,684 INFO L175 Difference]: Start difference. First operand has 308 places, 296 transitions, 3058 flow. Second operand 10 states and 114 transitions. [2024-06-21 20:06:00,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 316 transitions, 3768 flow [2024-06-21 20:06:01,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 316 transitions, 3666 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-21 20:06:01,143 INFO L231 Difference]: Finished difference. Result has 310 places, 297 transitions, 3161 flow [2024-06-21 20:06:01,143 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2956, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3161, PETRI_PLACES=310, PETRI_TRANSITIONS=297} [2024-06-21 20:06:01,143 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 279 predicate places. [2024-06-21 20:06:01,143 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 297 transitions, 3161 flow [2024-06-21 20:06:01,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-21 20:06:01,143 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:06:01,143 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:06:01,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-21 20:06:01,143 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)] === [2024-06-21 20:06:01,144 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:06:01,144 INFO L85 PathProgramCache]: Analyzing trace with hash 1489524239, now seen corresponding path program 2 times [2024-06-21 20:06:01,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:06:01,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161338667] [2024-06-21 20:06:01,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:06:01,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:06:01,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:06:02,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:06:02,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:06:02,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161338667] [2024-06-21 20:06:02,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161338667] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:06:02,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:06:02,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 20:06:02,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440485333] [2024-06-21 20:06:02,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:06:02,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 20:06:02,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:06:02,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 20:06:02,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-21 20:06:02,814 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:06:02,814 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 297 transitions, 3161 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-21 20:06:02,814 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:06:02,814 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:06:02,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:06:03,419 INFO L124 PetriNetUnfolderBase]: 886/1577 cut-off events. [2024-06-21 20:06:03,419 INFO L125 PetriNetUnfolderBase]: For 116681/116681 co-relation queries the response was YES. [2024-06-21 20:06:03,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9678 conditions, 1577 events. 886/1577 cut-off events. For 116681/116681 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 8816 event pairs, 125 based on Foata normal form. 2/1578 useless extension candidates. Maximal degree in co-relation 9534. Up to 1143 conditions per place. [2024-06-21 20:06:03,436 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 209 selfloop transitions, 109 changer transitions 0/320 dead transitions. [2024-06-21 20:06:03,436 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 320 transitions, 3913 flow [2024-06-21 20:06:03,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:06:03,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:06:03,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-21 20:06:03,437 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35795454545454547 [2024-06-21 20:06:03,437 INFO L175 Difference]: Start difference. First operand has 310 places, 297 transitions, 3161 flow. Second operand 11 states and 126 transitions. [2024-06-21 20:06:03,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 320 transitions, 3913 flow [2024-06-21 20:06:03,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 320 transitions, 3720 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-21 20:06:03,930 INFO L231 Difference]: Finished difference. Result has 313 places, 299 transitions, 3244 flow [2024-06-21 20:06:03,930 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2968, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3244, PETRI_PLACES=313, PETRI_TRANSITIONS=299} [2024-06-21 20:06:03,930 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 282 predicate places. [2024-06-21 20:06:03,930 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 299 transitions, 3244 flow [2024-06-21 20:06:03,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-21 20:06:03,930 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:06:03,930 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:06:03,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-21 20:06:03,931 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)] === [2024-06-21 20:06:03,931 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:06:03,931 INFO L85 PathProgramCache]: Analyzing trace with hash 2061209685, now seen corresponding path program 3 times [2024-06-21 20:06:03,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:06:03,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336266103] [2024-06-21 20:06:03,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:06:03,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:06:03,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:06:05,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:06:05,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:06:05,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336266103] [2024-06-21 20:06:05,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336266103] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:06:05,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:06:05,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 20:06:05,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210862832] [2024-06-21 20:06:05,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:06:05,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 20:06:05,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:06:05,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 20:06:05,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-21 20:06:05,837 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:06:05,837 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 299 transitions, 3244 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-21 20:06:05,837 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:06:05,837 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:06:05,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:06:06,745 INFO L124 PetriNetUnfolderBase]: 908/1613 cut-off events. [2024-06-21 20:06:06,745 INFO L125 PetriNetUnfolderBase]: For 141057/141057 co-relation queries the response was YES. [2024-06-21 20:06:06,757 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10230 conditions, 1613 events. 908/1613 cut-off events. For 141057/141057 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 9035 event pairs, 125 based on Foata normal form. 4/1616 useless extension candidates. Maximal degree in co-relation 10085. Up to 1103 conditions per place. [2024-06-21 20:06:06,760 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 209 selfloop transitions, 117 changer transitions 0/328 dead transitions. [2024-06-21 20:06:06,761 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 328 transitions, 4334 flow [2024-06-21 20:06:06,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:06:06,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:06:06,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-21 20:06:06,761 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3693181818181818 [2024-06-21 20:06:06,762 INFO L175 Difference]: Start difference. First operand has 313 places, 299 transitions, 3244 flow. Second operand 11 states and 130 transitions. [2024-06-21 20:06:06,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 328 transitions, 4334 flow [2024-06-21 20:06:07,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 328 transitions, 4080 flow, removed 20 selfloop flow, removed 9 redundant places. [2024-06-21 20:06:07,214 INFO L231 Difference]: Finished difference. Result has 316 places, 305 transitions, 3404 flow [2024-06-21 20:06:07,214 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2990, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3404, PETRI_PLACES=316, PETRI_TRANSITIONS=305} [2024-06-21 20:06:07,215 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 285 predicate places. [2024-06-21 20:06:07,215 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 305 transitions, 3404 flow [2024-06-21 20:06:07,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-21 20:06:07,215 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:06:07,215 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:06:07,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-21 20:06:07,215 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)] === [2024-06-21 20:06:07,215 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:06:07,215 INFO L85 PathProgramCache]: Analyzing trace with hash 1883840581, now seen corresponding path program 6 times [2024-06-21 20:06:07,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:06:07,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499886351] [2024-06-21 20:06:07,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:06:07,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:06:07,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:06:08,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:06:08,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:06:08,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499886351] [2024-06-21 20:06:08,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499886351] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:06:08,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:06:08,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 20:06:08,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524797675] [2024-06-21 20:06:08,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:06:08,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 20:06:08,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:06:08,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 20:06:08,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-21 20:06:08,453 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:06:08,453 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 305 transitions, 3404 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-21 20:06:08,454 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:06:08,454 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:06:08,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:06:09,039 INFO L124 PetriNetUnfolderBase]: 912/1621 cut-off events. [2024-06-21 20:06:09,040 INFO L125 PetriNetUnfolderBase]: For 135637/135637 co-relation queries the response was YES. [2024-06-21 20:06:09,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10348 conditions, 1621 events. 912/1621 cut-off events. For 135637/135637 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 9098 event pairs, 155 based on Foata normal form. 2/1622 useless extension candidates. Maximal degree in co-relation 10201. Up to 1437 conditions per place. [2024-06-21 20:06:09,056 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 269 selfloop transitions, 51 changer transitions 0/322 dead transitions. [2024-06-21 20:06:09,056 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 322 transitions, 4112 flow [2024-06-21 20:06:09,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 20:06:09,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 20:06:09,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-21 20:06:09,057 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-21 20:06:09,057 INFO L175 Difference]: Start difference. First operand has 316 places, 305 transitions, 3404 flow. Second operand 10 states and 110 transitions. [2024-06-21 20:06:09,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 322 transitions, 4112 flow [2024-06-21 20:06:09,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 322 transitions, 3880 flow, removed 52 selfloop flow, removed 8 redundant places. [2024-06-21 20:06:09,540 INFO L231 Difference]: Finished difference. Result has 318 places, 306 transitions, 3305 flow [2024-06-21 20:06:09,541 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3172, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3305, PETRI_PLACES=318, PETRI_TRANSITIONS=306} [2024-06-21 20:06:09,541 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 287 predicate places. [2024-06-21 20:06:09,541 INFO L495 AbstractCegarLoop]: Abstraction has has 318 places, 306 transitions, 3305 flow [2024-06-21 20:06:09,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-21 20:06:09,541 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:06:09,541 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:06:09,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-21 20:06:09,541 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)] === [2024-06-21 20:06:09,541 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:06:09,541 INFO L85 PathProgramCache]: Analyzing trace with hash 2061218365, now seen corresponding path program 1 times [2024-06-21 20:06:09,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:06:09,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060440774] [2024-06-21 20:06:09,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:06:09,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:06:09,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:06:11,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:06:11,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:06:11,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060440774] [2024-06-21 20:06:11,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060440774] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:06:11,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:06:11,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 20:06:11,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061278355] [2024-06-21 20:06:11,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:06:11,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 20:06:11,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:06:11,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 20:06:11,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-21 20:06:11,614 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:06:11,615 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 306 transitions, 3305 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-21 20:06:11,615 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:06:11,615 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:06:11,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:06:12,257 INFO L124 PetriNetUnfolderBase]: 916/1629 cut-off events. [2024-06-21 20:06:12,257 INFO L125 PetriNetUnfolderBase]: For 132764/132764 co-relation queries the response was YES. [2024-06-21 20:06:12,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10286 conditions, 1629 events. 916/1629 cut-off events. For 132764/132764 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 9183 event pairs, 192 based on Foata normal form. 2/1630 useless extension candidates. Maximal degree in co-relation 10139. Up to 1464 conditions per place. [2024-06-21 20:06:12,274 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 274 selfloop transitions, 49 changer transitions 0/325 dead transitions. [2024-06-21 20:06:12,274 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 325 transitions, 4039 flow [2024-06-21 20:06:12,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:06:12,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:06:12,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 116 transitions. [2024-06-21 20:06:12,275 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32954545454545453 [2024-06-21 20:06:12,275 INFO L175 Difference]: Start difference. First operand has 318 places, 306 transitions, 3305 flow. Second operand 11 states and 116 transitions. [2024-06-21 20:06:12,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 325 transitions, 4039 flow [2024-06-21 20:06:12,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 325 transitions, 3918 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-21 20:06:12,773 INFO L231 Difference]: Finished difference. Result has 321 places, 307 transitions, 3318 flow [2024-06-21 20:06:12,773 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3184, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3318, PETRI_PLACES=321, PETRI_TRANSITIONS=307} [2024-06-21 20:06:12,773 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 290 predicate places. [2024-06-21 20:06:12,773 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 307 transitions, 3318 flow [2024-06-21 20:06:12,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-21 20:06:12,774 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:06:12,774 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:06:12,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-21 20:06:12,774 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)] === [2024-06-21 20:06:12,774 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:06:12,774 INFO L85 PathProgramCache]: Analyzing trace with hash 2054543011, now seen corresponding path program 7 times [2024-06-21 20:06:12,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:06:12,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542213559] [2024-06-21 20:06:12,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:06:12,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:06:12,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:06:13,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:06:13,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:06:13,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542213559] [2024-06-21 20:06:13,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542213559] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:06:13,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:06:13,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 20:06:13,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730515053] [2024-06-21 20:06:13,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:06:13,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 20:06:13,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:06:13,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 20:06:13,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-21 20:06:13,915 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:06:13,915 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 307 transitions, 3318 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-21 20:06:13,915 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:06:13,915 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:06:13,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:06:14,451 INFO L124 PetriNetUnfolderBase]: 920/1637 cut-off events. [2024-06-21 20:06:14,451 INFO L125 PetriNetUnfolderBase]: For 134821/134821 co-relation queries the response was YES. [2024-06-21 20:06:14,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10336 conditions, 1637 events. 920/1637 cut-off events. For 134821/134821 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 9216 event pairs, 135 based on Foata normal form. 2/1638 useless extension candidates. Maximal degree in co-relation 10188. Up to 1391 conditions per place. [2024-06-21 20:06:14,468 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 254 selfloop transitions, 70 changer transitions 0/326 dead transitions. [2024-06-21 20:06:14,468 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 326 transitions, 4046 flow [2024-06-21 20:06:14,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 20:06:14,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 20:06:14,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-21 20:06:14,469 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35 [2024-06-21 20:06:14,469 INFO L175 Difference]: Start difference. First operand has 321 places, 307 transitions, 3318 flow. Second operand 10 states and 112 transitions. [2024-06-21 20:06:14,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 326 transitions, 4046 flow [2024-06-21 20:06:14,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 326 transitions, 3924 flow, removed 14 selfloop flow, removed 9 redundant places. [2024-06-21 20:06:14,955 INFO L231 Difference]: Finished difference. Result has 322 places, 308 transitions, 3369 flow [2024-06-21 20:06:14,955 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3196, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3369, PETRI_PLACES=322, PETRI_TRANSITIONS=308} [2024-06-21 20:06:14,955 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 291 predicate places. [2024-06-21 20:06:14,955 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 308 transitions, 3369 flow [2024-06-21 20:06:14,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-21 20:06:14,955 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:06:14,956 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:06:14,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-21 20:06:14,956 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)] === [2024-06-21 20:06:14,956 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:06:14,956 INFO L85 PathProgramCache]: Analyzing trace with hash 2054538361, now seen corresponding path program 8 times [2024-06-21 20:06:14,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:06:14,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954359367] [2024-06-21 20:06:14,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:06:14,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:06:14,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:06:16,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:06:16,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:06:16,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954359367] [2024-06-21 20:06:16,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954359367] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:06:16,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:06:16,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 20:06:16,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515735574] [2024-06-21 20:06:16,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:06:16,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 20:06:16,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:06:16,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 20:06:16,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-21 20:06:16,387 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:06:16,387 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 308 transitions, 3369 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-21 20:06:16,387 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:06:16,387 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:06:16,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:06:16,932 INFO L124 PetriNetUnfolderBase]: 924/1645 cut-off events. [2024-06-21 20:06:16,932 INFO L125 PetriNetUnfolderBase]: For 134888/134888 co-relation queries the response was YES. [2024-06-21 20:06:16,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10426 conditions, 1645 events. 924/1645 cut-off events. For 134888/134888 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 9272 event pairs, 135 based on Foata normal form. 2/1646 useless extension candidates. Maximal degree in co-relation 10277. Up to 1407 conditions per place. [2024-06-21 20:06:16,950 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 258 selfloop transitions, 67 changer transitions 0/327 dead transitions. [2024-06-21 20:06:16,950 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 327 transitions, 4099 flow [2024-06-21 20:06:16,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 20:06:16,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 20:06:16,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-21 20:06:16,951 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.346875 [2024-06-21 20:06:16,951 INFO L175 Difference]: Start difference. First operand has 322 places, 308 transitions, 3369 flow. Second operand 10 states and 111 transitions. [2024-06-21 20:06:16,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 327 transitions, 4099 flow [2024-06-21 20:06:17,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 327 transitions, 3938 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-21 20:06:17,430 INFO L231 Difference]: Finished difference. Result has 324 places, 309 transitions, 3376 flow [2024-06-21 20:06:17,430 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3208, PETRI_DIFFERENCE_MINUEND_PLACES=314, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3376, PETRI_PLACES=324, PETRI_TRANSITIONS=309} [2024-06-21 20:06:17,430 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 293 predicate places. [2024-06-21 20:06:17,431 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 309 transitions, 3376 flow [2024-06-21 20:06:17,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-21 20:06:17,431 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:06:17,431 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:06:17,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-21 20:06:17,431 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)] === [2024-06-21 20:06:17,431 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:06:17,431 INFO L85 PathProgramCache]: Analyzing trace with hash 1883835931, now seen corresponding path program 9 times [2024-06-21 20:06:17,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:06:17,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58471577] [2024-06-21 20:06:17,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:06:17,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:06:17,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:06:18,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:06:18,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:06:18,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58471577] [2024-06-21 20:06:18,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58471577] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:06:18,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:06:18,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 20:06:18,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438425465] [2024-06-21 20:06:18,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:06:18,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 20:06:18,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:06:18,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 20:06:18,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-21 20:06:18,721 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:06:18,721 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 309 transitions, 3376 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-21 20:06:18,722 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:06:18,722 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:06:18,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:06:19,276 INFO L124 PetriNetUnfolderBase]: 928/1653 cut-off events. [2024-06-21 20:06:19,276 INFO L125 PetriNetUnfolderBase]: For 137480/137480 co-relation queries the response was YES. [2024-06-21 20:06:19,293 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10479 conditions, 1653 events. 928/1653 cut-off events. For 137480/137480 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 9355 event pairs, 159 based on Foata normal form. 2/1654 useless extension candidates. Maximal degree in co-relation 10329. Up to 1477 conditions per place. [2024-06-21 20:06:19,298 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 276 selfloop transitions, 48 changer transitions 0/326 dead transitions. [2024-06-21 20:06:19,298 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 326 transitions, 4096 flow [2024-06-21 20:06:19,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 20:06:19,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 20:06:19,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-21 20:06:19,299 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.340625 [2024-06-21 20:06:19,299 INFO L175 Difference]: Start difference. First operand has 324 places, 309 transitions, 3376 flow. Second operand 10 states and 109 transitions. [2024-06-21 20:06:19,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 326 transitions, 4096 flow [2024-06-21 20:06:19,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 326 transitions, 3938 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-21 20:06:19,832 INFO L231 Difference]: Finished difference. Result has 326 places, 310 transitions, 3350 flow [2024-06-21 20:06:19,833 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3218, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3350, PETRI_PLACES=326, PETRI_TRANSITIONS=310} [2024-06-21 20:06:19,833 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 295 predicate places. [2024-06-21 20:06:19,833 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 310 transitions, 3350 flow [2024-06-21 20:06:19,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-21 20:06:19,833 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:06:19,833 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:06:19,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-21 20:06:19,833 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)] === [2024-06-21 20:06:19,834 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:06:19,834 INFO L85 PathProgramCache]: Analyzing trace with hash 117768409, now seen corresponding path program 4 times [2024-06-21 20:06:19,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:06:19,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517932981] [2024-06-21 20:06:19,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:06:19,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:06:19,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:06:21,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:06:21,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:06:21,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517932981] [2024-06-21 20:06:21,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517932981] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:06:21,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:06:21,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 20:06:21,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193243353] [2024-06-21 20:06:21,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:06:21,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 20:06:21,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:06:21,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 20:06:21,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-21 20:06:21,477 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:06:21,477 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 310 transitions, 3350 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-21 20:06:21,477 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:06:21,477 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:06:21,477 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:06:22,156 INFO L124 PetriNetUnfolderBase]: 934/1663 cut-off events. [2024-06-21 20:06:22,156 INFO L125 PetriNetUnfolderBase]: For 139962/139962 co-relation queries the response was YES. [2024-06-21 20:06:22,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10490 conditions, 1663 events. 934/1663 cut-off events. For 139962/139962 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 9402 event pairs, 139 based on Foata normal form. 2/1664 useless extension candidates. Maximal degree in co-relation 10339. Up to 1397 conditions per place. [2024-06-21 20:06:22,171 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 255 selfloop transitions, 75 changer transitions 0/332 dead transitions. [2024-06-21 20:06:22,171 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 336 places, 332 transitions, 4116 flow [2024-06-21 20:06:22,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:06:22,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:06:22,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-21 20:06:22,172 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3465909090909091 [2024-06-21 20:06:22,172 INFO L175 Difference]: Start difference. First operand has 326 places, 310 transitions, 3350 flow. Second operand 11 states and 122 transitions. [2024-06-21 20:06:22,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 336 places, 332 transitions, 4116 flow [2024-06-21 20:06:22,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 332 transitions, 3994 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-21 20:06:22,670 INFO L231 Difference]: Finished difference. Result has 329 places, 312 transitions, 3432 flow [2024-06-21 20:06:22,670 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3228, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3432, PETRI_PLACES=329, PETRI_TRANSITIONS=312} [2024-06-21 20:06:22,671 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 298 predicate places. [2024-06-21 20:06:22,671 INFO L495 AbstractCegarLoop]: Abstraction has has 329 places, 312 transitions, 3432 flow [2024-06-21 20:06:22,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-21 20:06:22,671 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:06:22,671 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:06:22,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-21 20:06:22,671 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)] === [2024-06-21 20:06:22,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:06:22,671 INFO L85 PathProgramCache]: Analyzing trace with hash -53233915, now seen corresponding path program 10 times [2024-06-21 20:06:22,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:06:22,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781343311] [2024-06-21 20:06:22,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:06:22,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:06:22,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:06:23,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:06:23,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:06:23,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781343311] [2024-06-21 20:06:23,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781343311] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:06:23,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:06:23,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 20:06:23,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012596324] [2024-06-21 20:06:23,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:06:23,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 20:06:23,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:06:23,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 20:06:23,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-21 20:06:23,664 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:06:23,664 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 312 transitions, 3432 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-21 20:06:23,664 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:06:23,664 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:06:23,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:06:24,235 INFO L124 PetriNetUnfolderBase]: 938/1671 cut-off events. [2024-06-21 20:06:24,235 INFO L125 PetriNetUnfolderBase]: For 142798/142798 co-relation queries the response was YES. [2024-06-21 20:06:24,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10622 conditions, 1671 events. 938/1671 cut-off events. For 142798/142798 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 9484 event pairs, 159 based on Foata normal form. 2/1672 useless extension candidates. Maximal degree in co-relation 10470. Up to 1503 conditions per place. [2024-06-21 20:06:24,251 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 282 selfloop transitions, 45 changer transitions 0/329 dead transitions. [2024-06-21 20:06:24,251 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 329 transitions, 4158 flow [2024-06-21 20:06:24,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 20:06:24,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 20:06:24,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-21 20:06:24,252 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3375 [2024-06-21 20:06:24,252 INFO L175 Difference]: Start difference. First operand has 329 places, 312 transitions, 3432 flow. Second operand 10 states and 108 transitions. [2024-06-21 20:06:24,252 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 329 transitions, 4158 flow [2024-06-21 20:06:24,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 329 transitions, 3980 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-06-21 20:06:24,764 INFO L231 Difference]: Finished difference. Result has 330 places, 313 transitions, 3382 flow [2024-06-21 20:06:24,764 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3254, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=267, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3382, PETRI_PLACES=330, PETRI_TRANSITIONS=313} [2024-06-21 20:06:24,765 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 299 predicate places. [2024-06-21 20:06:24,765 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 313 transitions, 3382 flow [2024-06-21 20:06:24,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-21 20:06:24,765 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:06:24,765 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:06:24,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-21 20:06:24,765 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)] === [2024-06-21 20:06:24,766 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:06:24,766 INFO L85 PathProgramCache]: Analyzing trace with hash -48465371, now seen corresponding path program 5 times [2024-06-21 20:06:24,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:06:24,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340453975] [2024-06-21 20:06:24,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:06:24,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:06:24,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:06:26,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:06:26,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:06:26,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340453975] [2024-06-21 20:06:26,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340453975] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:06:26,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:06:26,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 20:06:26,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049512110] [2024-06-21 20:06:26,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:06:26,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 20:06:26,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:06:26,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 20:06:26,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-21 20:06:26,364 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:06:26,364 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 313 transitions, 3382 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-21 20:06:26,364 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:06:26,364 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:06:26,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:06:27,074 INFO L124 PetriNetUnfolderBase]: 939/1673 cut-off events. [2024-06-21 20:06:27,074 INFO L125 PetriNetUnfolderBase]: For 139508/139508 co-relation queries the response was YES. [2024-06-21 20:06:27,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10476 conditions, 1673 events. 939/1673 cut-off events. For 139508/139508 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 9505 event pairs, 163 based on Foata normal form. 2/1674 useless extension candidates. Maximal degree in co-relation 10323. Up to 1469 conditions per place. [2024-06-21 20:06:27,093 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 275 selfloop transitions, 56 changer transitions 0/333 dead transitions. [2024-06-21 20:06:27,093 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 333 transitions, 4144 flow [2024-06-21 20:06:27,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:06:27,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:06:27,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-21 20:06:27,094 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3409090909090909 [2024-06-21 20:06:27,094 INFO L175 Difference]: Start difference. First operand has 330 places, 313 transitions, 3382 flow. Second operand 11 states and 120 transitions. [2024-06-21 20:06:27,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 333 transitions, 4144 flow [2024-06-21 20:06:27,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 333 transitions, 4026 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-21 20:06:27,618 INFO L231 Difference]: Finished difference. Result has 333 places, 315 transitions, 3434 flow [2024-06-21 20:06:27,618 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3264, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3434, PETRI_PLACES=333, PETRI_TRANSITIONS=315} [2024-06-21 20:06:27,619 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 302 predicate places. [2024-06-21 20:06:27,619 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 315 transitions, 3434 flow [2024-06-21 20:06:27,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-21 20:06:27,619 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:06:27,619 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:06:27,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-21 20:06:27,619 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)] === [2024-06-21 20:06:27,619 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:06:27,619 INFO L85 PathProgramCache]: Analyzing trace with hash -2129410009, now seen corresponding path program 11 times [2024-06-21 20:06:27,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:06:27,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203132566] [2024-06-21 20:06:27,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:06:27,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:06:27,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:06:28,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:06:28,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:06:28,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203132566] [2024-06-21 20:06:28,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203132566] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:06:28,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:06:28,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 20:06:28,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283939564] [2024-06-21 20:06:28,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:06:28,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 20:06:28,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:06:28,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 20:06:28,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-21 20:06:28,807 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:06:28,807 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 315 transitions, 3434 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-21 20:06:28,807 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:06:28,807 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:06:28,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:06:29,397 INFO L124 PetriNetUnfolderBase]: 943/1682 cut-off events. [2024-06-21 20:06:29,398 INFO L125 PetriNetUnfolderBase]: For 142485/142487 co-relation queries the response was YES. [2024-06-21 20:06:29,411 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10565 conditions, 1682 events. 943/1682 cut-off events. For 142485/142487 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 9590 event pairs, 175 based on Foata normal form. 2/1683 useless extension candidates. Maximal degree in co-relation 10411. Up to 1515 conditions per place. [2024-06-21 20:06:29,415 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 283 selfloop transitions, 46 changer transitions 0/331 dead transitions. [2024-06-21 20:06:29,415 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 331 transitions, 4168 flow [2024-06-21 20:06:29,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 20:06:29,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 20:06:29,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-21 20:06:29,416 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3375 [2024-06-21 20:06:29,416 INFO L175 Difference]: Start difference. First operand has 333 places, 315 transitions, 3434 flow. Second operand 10 states and 108 transitions. [2024-06-21 20:06:29,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 342 places, 331 transitions, 4168 flow [2024-06-21 20:06:30,016 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 331 transitions, 4024 flow, removed 18 selfloop flow, removed 9 redundant places. [2024-06-21 20:06:30,019 INFO L231 Difference]: Finished difference. Result has 334 places, 316 transitions, 3422 flow [2024-06-21 20:06:30,019 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3290, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3422, PETRI_PLACES=334, PETRI_TRANSITIONS=316} [2024-06-21 20:06:30,019 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 303 predicate places. [2024-06-21 20:06:30,019 INFO L495 AbstractCegarLoop]: Abstraction has has 334 places, 316 transitions, 3422 flow [2024-06-21 20:06:30,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-21 20:06:30,019 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:06:30,020 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:06:30,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-21 20:06:30,020 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)] === [2024-06-21 20:06:30,020 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:06:30,020 INFO L85 PathProgramCache]: Analyzing trace with hash 11857969, now seen corresponding path program 6 times [2024-06-21 20:06:30,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:06:30,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102545453] [2024-06-21 20:06:30,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:06:30,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:06:30,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:06:32,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:06:32,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:06:32,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102545453] [2024-06-21 20:06:32,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102545453] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:06:32,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:06:32,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 20:06:32,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413244818] [2024-06-21 20:06:32,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:06:32,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 20:06:32,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:06:32,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 20:06:32,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-21 20:06:32,853 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:06:32,854 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 316 transitions, 3422 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-21 20:06:32,854 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:06:32,854 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:06:32,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:06:33,558 INFO L124 PetriNetUnfolderBase]: 959/1708 cut-off events. [2024-06-21 20:06:33,558 INFO L125 PetriNetUnfolderBase]: For 157690/157692 co-relation queries the response was YES. [2024-06-21 20:06:33,573 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10972 conditions, 1708 events. 959/1708 cut-off events. For 157690/157692 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 9745 event pairs, 96 based on Foata normal form. 2/1709 useless extension candidates. Maximal degree in co-relation 10817. Up to 1214 conditions per place. [2024-06-21 20:06:33,577 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 215 selfloop transitions, 129 changer transitions 0/346 dead transitions. [2024-06-21 20:06:33,578 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 346 transitions, 4532 flow [2024-06-21 20:06:33,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 20:06:33,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 20:06:33,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 140 transitions. [2024-06-21 20:06:33,579 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3645833333333333 [2024-06-21 20:06:33,579 INFO L175 Difference]: Start difference. First operand has 334 places, 316 transitions, 3422 flow. Second operand 12 states and 140 transitions. [2024-06-21 20:06:33,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 346 transitions, 4532 flow [2024-06-21 20:06:34,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 346 transitions, 4410 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-21 20:06:34,253 INFO L231 Difference]: Finished difference. Result has 338 places, 320 transitions, 3676 flow [2024-06-21 20:06:34,253 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3300, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=316, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3676, PETRI_PLACES=338, PETRI_TRANSITIONS=320} [2024-06-21 20:06:34,253 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 307 predicate places. [2024-06-21 20:06:34,253 INFO L495 AbstractCegarLoop]: Abstraction has has 338 places, 320 transitions, 3676 flow [2024-06-21 20:06:34,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-21 20:06:34,253 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:06:34,253 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:06:34,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-21 20:06:34,254 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)] === [2024-06-21 20:06:34,254 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:06:34,254 INFO L85 PathProgramCache]: Analyzing trace with hash -227407867, now seen corresponding path program 12 times [2024-06-21 20:06:34,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:06:34,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579609104] [2024-06-21 20:06:34,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:06:34,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:06:34,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:06:35,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:06:35,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:06:35,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579609104] [2024-06-21 20:06:35,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579609104] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:06:35,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:06:35,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 20:06:35,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171763149] [2024-06-21 20:06:35,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:06:35,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 20:06:35,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:06:35,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 20:06:35,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-21 20:06:35,512 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:06:35,512 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 320 transitions, 3676 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-21 20:06:35,512 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:06:35,512 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:06:35,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:06:36,112 INFO L124 PetriNetUnfolderBase]: 963/1716 cut-off events. [2024-06-21 20:06:36,113 INFO L125 PetriNetUnfolderBase]: For 160911/160913 co-relation queries the response was YES. [2024-06-21 20:06:36,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11278 conditions, 1716 events. 963/1716 cut-off events. For 160911/160913 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 9820 event pairs, 164 based on Foata normal form. 2/1717 useless extension candidates. Maximal degree in co-relation 11122. Up to 1487 conditions per place. [2024-06-21 20:06:36,132 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 274 selfloop transitions, 63 changer transitions 0/339 dead transitions. [2024-06-21 20:06:36,133 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 339 transitions, 4444 flow [2024-06-21 20:06:36,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 20:06:36,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 20:06:36,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 114 transitions. [2024-06-21 20:06:36,133 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35625 [2024-06-21 20:06:36,133 INFO L175 Difference]: Start difference. First operand has 338 places, 320 transitions, 3676 flow. Second operand 10 states and 114 transitions. [2024-06-21 20:06:36,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 339 transitions, 4444 flow [2024-06-21 20:06:36,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 339 transitions, 4210 flow, removed 31 selfloop flow, removed 8 redundant places. [2024-06-21 20:06:36,816 INFO L231 Difference]: Finished difference. Result has 340 places, 321 transitions, 3611 flow [2024-06-21 20:06:36,816 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3442, PETRI_DIFFERENCE_MINUEND_PLACES=330, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=320, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3611, PETRI_PLACES=340, PETRI_TRANSITIONS=321} [2024-06-21 20:06:36,816 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 309 predicate places. [2024-06-21 20:06:36,816 INFO L495 AbstractCegarLoop]: Abstraction has has 340 places, 321 transitions, 3611 flow [2024-06-21 20:06:36,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-21 20:06:36,816 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:06:36,816 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:06:36,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-21 20:06:36,817 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)] === [2024-06-21 20:06:36,817 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:06:36,817 INFO L85 PathProgramCache]: Analyzing trace with hash -227400923, now seen corresponding path program 7 times [2024-06-21 20:06:36,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:06:36,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607315286] [2024-06-21 20:06:36,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:06:36,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:06:36,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:06:38,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:06:38,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:06:38,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607315286] [2024-06-21 20:06:38,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607315286] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:06:38,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:06:38,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 20:06:38,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151920779] [2024-06-21 20:06:38,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:06:38,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 20:06:38,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:06:38,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 20:06:38,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-21 20:06:38,640 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:06:38,640 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 321 transitions, 3611 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-21 20:06:38,640 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:06:38,640 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:06:38,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:06:39,359 INFO L124 PetriNetUnfolderBase]: 969/1726 cut-off events. [2024-06-21 20:06:39,359 INFO L125 PetriNetUnfolderBase]: For 163396/163398 co-relation queries the response was YES. [2024-06-21 20:06:39,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11333 conditions, 1726 events. 969/1726 cut-off events. For 163396/163398 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 9899 event pairs, 160 based on Foata normal form. 2/1727 useless extension candidates. Maximal degree in co-relation 11175. Up to 1430 conditions per place. [2024-06-21 20:06:39,378 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 264 selfloop transitions, 77 changer transitions 0/343 dead transitions. [2024-06-21 20:06:39,378 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 343 transitions, 4417 flow [2024-06-21 20:06:39,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:06:39,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:06:39,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-21 20:06:39,379 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35795454545454547 [2024-06-21 20:06:39,379 INFO L175 Difference]: Start difference. First operand has 340 places, 321 transitions, 3611 flow. Second operand 11 states and 126 transitions. [2024-06-21 20:06:39,379 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 343 transitions, 4417 flow [2024-06-21 20:06:40,066 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 343 transitions, 4260 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-21 20:06:40,069 INFO L231 Difference]: Finished difference. Result has 343 places, 323 transitions, 3676 flow [2024-06-21 20:06:40,069 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3454, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3676, PETRI_PLACES=343, PETRI_TRANSITIONS=323} [2024-06-21 20:06:40,070 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 312 predicate places. [2024-06-21 20:06:40,070 INFO L495 AbstractCegarLoop]: Abstraction has has 343 places, 323 transitions, 3676 flow [2024-06-21 20:06:40,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-21 20:06:40,070 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:06:40,070 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:06:40,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-21 20:06:40,070 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)] === [2024-06-21 20:06:40,070 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:06:40,070 INFO L85 PathProgramCache]: Analyzing trace with hash 1972461251, now seen corresponding path program 8 times [2024-06-21 20:06:40,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:06:40,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5589736] [2024-06-21 20:06:40,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:06:40,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:06:40,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:06:41,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:06:41,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:06:41,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5589736] [2024-06-21 20:06:41,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5589736] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:06:41,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:06:41,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 20:06:41,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343773793] [2024-06-21 20:06:41,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:06:41,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 20:06:41,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:06:41,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 20:06:41,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-21 20:06:41,891 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:06:41,891 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 323 transitions, 3676 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-21 20:06:41,891 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:06:41,891 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:06:41,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:06:42,651 INFO L124 PetriNetUnfolderBase]: 991/1762 cut-off events. [2024-06-21 20:06:42,652 INFO L125 PetriNetUnfolderBase]: For 180102/180104 co-relation queries the response was YES. [2024-06-21 20:06:42,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11930 conditions, 1762 events. 991/1762 cut-off events. For 180102/180104 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 10116 event pairs, 168 based on Foata normal form. 2/1763 useless extension candidates. Maximal degree in co-relation 11771. Up to 1516 conditions per place. [2024-06-21 20:06:42,673 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 286 selfloop transitions, 65 changer transitions 0/353 dead transitions. [2024-06-21 20:06:42,673 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 353 transitions, 4876 flow [2024-06-21 20:06:42,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 20:06:42,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 20:06:42,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 135 transitions. [2024-06-21 20:06:42,674 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3515625 [2024-06-21 20:06:42,674 INFO L175 Difference]: Start difference. First operand has 343 places, 323 transitions, 3676 flow. Second operand 12 states and 135 transitions. [2024-06-21 20:06:42,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 353 transitions, 4876 flow [2024-06-21 20:06:43,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 345 places, 353 transitions, 4624 flow, removed 50 selfloop flow, removed 9 redundant places. [2024-06-21 20:06:43,402 INFO L231 Difference]: Finished difference. Result has 347 places, 329 transitions, 3765 flow [2024-06-21 20:06:43,402 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3476, PETRI_DIFFERENCE_MINUEND_PLACES=334, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=323, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3765, PETRI_PLACES=347, PETRI_TRANSITIONS=329} [2024-06-21 20:06:43,403 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 316 predicate places. [2024-06-21 20:06:43,403 INFO L495 AbstractCegarLoop]: Abstraction has has 347 places, 329 transitions, 3765 flow [2024-06-21 20:06:43,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-21 20:06:43,403 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:06:43,403 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:06:43,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-21 20:06:43,404 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)] === [2024-06-21 20:06:43,404 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:06:43,404 INFO L85 PathProgramCache]: Analyzing trace with hash 1735809297, now seen corresponding path program 13 times [2024-06-21 20:06:43,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:06:43,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16985035] [2024-06-21 20:06:43,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:06:43,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:06:43,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:06:44,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:06:44,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:06:44,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16985035] [2024-06-21 20:06:44,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16985035] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:06:44,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:06:44,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 20:06:44,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078299922] [2024-06-21 20:06:44,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:06:44,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 20:06:44,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:06:44,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 20:06:44,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-21 20:06:44,869 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:06:44,869 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 329 transitions, 3765 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-21 20:06:44,869 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:06:44,869 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:06:44,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:06:45,483 INFO L124 PetriNetUnfolderBase]: 995/1770 cut-off events. [2024-06-21 20:06:45,484 INFO L125 PetriNetUnfolderBase]: For 183287/183289 co-relation queries the response was YES. [2024-06-21 20:06:45,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11932 conditions, 1770 events. 995/1770 cut-off events. For 183287/183289 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 10168 event pairs, 179 based on Foata normal form. 2/1771 useless extension candidates. Maximal degree in co-relation 11771. Up to 1599 conditions per place. [2024-06-21 20:06:45,503 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 295 selfloop transitions, 48 changer transitions 0/345 dead transitions. [2024-06-21 20:06:45,504 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 345 transitions, 4533 flow [2024-06-21 20:06:45,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 20:06:45,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 20:06:45,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-21 20:06:45,505 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.334375 [2024-06-21 20:06:45,505 INFO L175 Difference]: Start difference. First operand has 347 places, 329 transitions, 3765 flow. Second operand 10 states and 107 transitions. [2024-06-21 20:06:45,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 356 places, 345 transitions, 4533 flow [2024-06-21 20:06:46,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 345 transitions, 4384 flow, removed 37 selfloop flow, removed 8 redundant places. [2024-06-21 20:06:46,130 INFO L231 Difference]: Finished difference. Result has 349 places, 330 transitions, 3756 flow [2024-06-21 20:06:46,130 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3616, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=329, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3756, PETRI_PLACES=349, PETRI_TRANSITIONS=330} [2024-06-21 20:06:46,130 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 318 predicate places. [2024-06-21 20:06:46,130 INFO L495 AbstractCegarLoop]: Abstraction has has 349 places, 330 transitions, 3756 flow [2024-06-21 20:06:46,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-21 20:06:46,130 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:06:46,130 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:06:46,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-21 20:06:46,131 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)] === [2024-06-21 20:06:46,131 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:06:46,131 INFO L85 PathProgramCache]: Analyzing trace with hash -643661755, now seen corresponding path program 14 times [2024-06-21 20:06:46,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:06:46,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312018354] [2024-06-21 20:06:46,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:06:46,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:06:46,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:06:47,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:06:47,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:06:47,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312018354] [2024-06-21 20:06:47,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312018354] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:06:47,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:06:47,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 20:06:47,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762895787] [2024-06-21 20:06:47,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:06:47,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 20:06:47,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:06:47,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 20:06:47,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-21 20:06:47,303 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:06:47,303 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 349 places, 330 transitions, 3756 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:06:47,304 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:06:47,304 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:06:47,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:06:47,855 INFO L124 PetriNetUnfolderBase]: 999/1777 cut-off events. [2024-06-21 20:06:47,855 INFO L125 PetriNetUnfolderBase]: For 185858/185858 co-relation queries the response was YES. [2024-06-21 20:06:47,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12017 conditions, 1777 events. 999/1777 cut-off events. For 185858/185858 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 10253 event pairs, 279 based on Foata normal form. 2/1778 useless extension candidates. Maximal degree in co-relation 11854. Up to 1736 conditions per place. [2024-06-21 20:06:47,874 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 325 selfloop transitions, 16 changer transitions 0/343 dead transitions. [2024-06-21 20:06:47,874 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 343 transitions, 4510 flow [2024-06-21 20:06:47,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 20:06:47,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 20:06:47,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 98 transitions. [2024-06-21 20:06:47,875 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30625 [2024-06-21 20:06:47,875 INFO L175 Difference]: Start difference. First operand has 349 places, 330 transitions, 3756 flow. Second operand 10 states and 98 transitions. [2024-06-21 20:06:47,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 358 places, 343 transitions, 4510 flow [2024-06-21 20:06:48,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 350 places, 343 transitions, 4380 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-21 20:06:48,532 INFO L231 Difference]: Finished difference. Result has 351 places, 331 transitions, 3704 flow [2024-06-21 20:06:48,533 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3626, PETRI_DIFFERENCE_MINUEND_PLACES=341, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=330, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=314, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3704, PETRI_PLACES=351, PETRI_TRANSITIONS=331} [2024-06-21 20:06:48,533 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 320 predicate places. [2024-06-21 20:06:48,533 INFO L495 AbstractCegarLoop]: Abstraction has has 351 places, 331 transitions, 3704 flow [2024-06-21 20:06:48,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:06:48,533 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:06:48,534 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:06:48,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-21 20:06:48,534 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)] === [2024-06-21 20:06:48,534 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:06:48,534 INFO L85 PathProgramCache]: Analyzing trace with hash -404544037, now seen corresponding path program 15 times [2024-06-21 20:06:48,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:06:48,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216441713] [2024-06-21 20:06:48,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:06:48,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:06:48,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:06:49,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:06:49,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:06:49,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216441713] [2024-06-21 20:06:49,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216441713] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:06:49,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:06:49,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 20:06:49,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453165941] [2024-06-21 20:06:49,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:06:49,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 20:06:49,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:06:49,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 20:06:49,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-21 20:06:49,624 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:06:49,624 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 351 places, 331 transitions, 3704 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-21 20:06:49,624 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:06:49,624 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:06:49,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:06:50,313 INFO L124 PetriNetUnfolderBase]: 1003/1785 cut-off events. [2024-06-21 20:06:50,313 INFO L125 PetriNetUnfolderBase]: For 188822/188822 co-relation queries the response was YES. [2024-06-21 20:06:50,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11993 conditions, 1785 events. 1003/1785 cut-off events. For 188822/188822 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 10281 event pairs, 186 based on Foata normal form. 2/1786 useless extension candidates. Maximal degree in co-relation 11829. Up to 1619 conditions per place. [2024-06-21 20:06:50,330 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 300 selfloop transitions, 45 changer transitions 0/347 dead transitions. [2024-06-21 20:06:50,330 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 347 transitions, 4476 flow [2024-06-21 20:06:50,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 20:06:50,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 20:06:50,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-21 20:06:50,331 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.334375 [2024-06-21 20:06:50,331 INFO L175 Difference]: Start difference. First operand has 351 places, 331 transitions, 3704 flow. Second operand 10 states and 107 transitions. [2024-06-21 20:06:50,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 347 transitions, 4476 flow [2024-06-21 20:06:50,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 347 transitions, 4408 flow, removed 19 selfloop flow, removed 8 redundant places. [2024-06-21 20:06:50,970 INFO L231 Difference]: Finished difference. Result has 353 places, 332 transitions, 3774 flow [2024-06-21 20:06:50,970 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3636, PETRI_DIFFERENCE_MINUEND_PLACES=343, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=331, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=286, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3774, PETRI_PLACES=353, PETRI_TRANSITIONS=332} [2024-06-21 20:06:50,970 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 322 predicate places. [2024-06-21 20:06:50,971 INFO L495 AbstractCegarLoop]: Abstraction has has 353 places, 332 transitions, 3774 flow [2024-06-21 20:06:50,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-21 20:06:50,971 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:06:50,971 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:06:50,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-21 20:06:50,971 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)] === [2024-06-21 20:06:50,971 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:06:50,971 INFO L85 PathProgramCache]: Analyzing trace with hash -1867380881, now seen corresponding path program 16 times [2024-06-21 20:06:50,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:06:50,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222446068] [2024-06-21 20:06:50,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:06:50,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:06:50,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:06:51,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:06:51,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:06:51,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222446068] [2024-06-21 20:06:51,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222446068] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:06:51,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:06:51,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 20:06:51,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134852063] [2024-06-21 20:06:51,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:06:51,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 20:06:51,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:06:51,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 20:06:51,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-21 20:06:52,099 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:06:52,100 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 353 places, 332 transitions, 3774 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-21 20:06:52,100 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:06:52,100 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:06:52,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:06:52,766 INFO L124 PetriNetUnfolderBase]: 1007/1794 cut-off events. [2024-06-21 20:06:52,767 INFO L125 PetriNetUnfolderBase]: For 192411/192413 co-relation queries the response was YES. [2024-06-21 20:06:52,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12134 conditions, 1794 events. 1007/1794 cut-off events. For 192411/192413 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 10357 event pairs, 189 based on Foata normal form. 2/1795 useless extension candidates. Maximal degree in co-relation 11969. Up to 1627 conditions per place. [2024-06-21 20:06:52,784 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 302 selfloop transitions, 44 changer transitions 0/348 dead transitions. [2024-06-21 20:06:52,784 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 348 transitions, 4548 flow [2024-06-21 20:06:52,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 20:06:52,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 20:06:52,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-21 20:06:52,785 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33125 [2024-06-21 20:06:52,785 INFO L175 Difference]: Start difference. First operand has 353 places, 332 transitions, 3774 flow. Second operand 10 states and 106 transitions. [2024-06-21 20:06:52,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 348 transitions, 4548 flow [2024-06-21 20:06:53,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 348 transitions, 4420 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-06-21 20:06:53,618 INFO L231 Difference]: Finished difference. Result has 355 places, 333 transitions, 3784 flow [2024-06-21 20:06:53,618 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3646, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=332, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=288, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3784, PETRI_PLACES=355, PETRI_TRANSITIONS=333} [2024-06-21 20:06:53,618 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 324 predicate places. [2024-06-21 20:06:53,619 INFO L495 AbstractCegarLoop]: Abstraction has has 355 places, 333 transitions, 3784 flow [2024-06-21 20:06:53,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-21 20:06:53,619 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:06:53,619 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:06:53,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-21 20:06:53,619 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)] === [2024-06-21 20:06:53,620 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:06:53,620 INFO L85 PathProgramCache]: Analyzing trace with hash 1483312807, now seen corresponding path program 17 times [2024-06-21 20:06:53,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:06:53,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442042483] [2024-06-21 20:06:53,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:06:53,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:06:53,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:06:54,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:06:54,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:06:54,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442042483] [2024-06-21 20:06:54,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442042483] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:06:54,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:06:54,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 20:06:54,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303881609] [2024-06-21 20:06:54,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:06:54,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 20:06:54,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:06:54,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 20:06:54,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-21 20:06:54,832 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:06:54,832 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 355 places, 333 transitions, 3784 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:06:54,832 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:06:54,832 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:06:54,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:06:55,454 INFO L124 PetriNetUnfolderBase]: 1011/1802 cut-off events. [2024-06-21 20:06:55,454 INFO L125 PetriNetUnfolderBase]: For 195962/195964 co-relation queries the response was YES. [2024-06-21 20:06:55,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12196 conditions, 1802 events. 1011/1802 cut-off events. For 195962/195964 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 10410 event pairs, 184 based on Foata normal form. 2/1803 useless extension candidates. Maximal degree in co-relation 12030. Up to 1631 conditions per place. [2024-06-21 20:06:55,474 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 300 selfloop transitions, 47 changer transitions 0/349 dead transitions. [2024-06-21 20:06:55,474 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 364 places, 349 transitions, 4566 flow [2024-06-21 20:06:55,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 20:06:55,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 20:06:55,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-21 20:06:55,475 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33125 [2024-06-21 20:06:55,475 INFO L175 Difference]: Start difference. First operand has 355 places, 333 transitions, 3784 flow. Second operand 10 states and 106 transitions. [2024-06-21 20:06:55,475 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 364 places, 349 transitions, 4566 flow [2024-06-21 20:06:56,275 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 356 places, 349 transitions, 4438 flow, removed 21 selfloop flow, removed 8 redundant places. [2024-06-21 20:06:56,278 INFO L231 Difference]: Finished difference. Result has 357 places, 334 transitions, 3802 flow [2024-06-21 20:06:56,279 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3656, PETRI_DIFFERENCE_MINUEND_PLACES=347, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=333, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=286, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3802, PETRI_PLACES=357, PETRI_TRANSITIONS=334} [2024-06-21 20:06:56,279 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 326 predicate places. [2024-06-21 20:06:56,279 INFO L495 AbstractCegarLoop]: Abstraction has has 357 places, 334 transitions, 3802 flow [2024-06-21 20:06:56,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:06:56,279 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:06:56,280 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:06:56,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-21 20:06:56,280 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)] === [2024-06-21 20:06:56,280 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:06:56,280 INFO L85 PathProgramCache]: Analyzing trace with hash -1862612337, now seen corresponding path program 9 times [2024-06-21 20:06:56,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:06:56,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040897874] [2024-06-21 20:06:56,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:06:56,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:06:56,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:06:57,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:06:57,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:06:57,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040897874] [2024-06-21 20:06:57,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040897874] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:06:57,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:06:57,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 20:06:57,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494839048] [2024-06-21 20:06:57,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:06:57,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 20:06:57,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:06:57,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 20:06:57,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-21 20:06:57,995 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:06:57,995 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 357 places, 334 transitions, 3802 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-21 20:06:57,995 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:06:57,995 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:06:57,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:06:58,747 INFO L124 PetriNetUnfolderBase]: 1017/1812 cut-off events. [2024-06-21 20:06:58,748 INFO L125 PetriNetUnfolderBase]: For 199188/199190 co-relation queries the response was YES. [2024-06-21 20:06:58,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12266 conditions, 1812 events. 1017/1812 cut-off events. For 199188/199190 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 10496 event pairs, 191 based on Foata normal form. 2/1813 useless extension candidates. Maximal degree in co-relation 12099. Up to 1635 conditions per place. [2024-06-21 20:06:58,769 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 302 selfloop transitions, 49 changer transitions 0/353 dead transitions. [2024-06-21 20:06:58,769 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 367 places, 353 transitions, 4620 flow [2024-06-21 20:06:58,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:06:58,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:06:58,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 118 transitions. [2024-06-21 20:06:58,770 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3352272727272727 [2024-06-21 20:06:58,770 INFO L175 Difference]: Start difference. First operand has 357 places, 334 transitions, 3802 flow. Second operand 11 states and 118 transitions. [2024-06-21 20:06:58,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 367 places, 353 transitions, 4620 flow [2024-06-21 20:06:59,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 359 places, 353 transitions, 4484 flow, removed 22 selfloop flow, removed 8 redundant places. [2024-06-21 20:06:59,471 INFO L231 Difference]: Finished difference. Result has 360 places, 336 transitions, 3839 flow [2024-06-21 20:06:59,472 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3666, PETRI_DIFFERENCE_MINUEND_PLACES=349, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=334, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=285, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3839, PETRI_PLACES=360, PETRI_TRANSITIONS=336} [2024-06-21 20:06:59,472 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 329 predicate places. [2024-06-21 20:06:59,472 INFO L495 AbstractCegarLoop]: Abstraction has has 360 places, 336 transitions, 3839 flow [2024-06-21 20:06:59,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-21 20:06:59,472 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:06:59,472 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:06:59,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-21 20:06:59,473 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)] === [2024-06-21 20:06:59,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:06:59,473 INFO L85 PathProgramCache]: Analyzing trace with hash 694633945, now seen corresponding path program 10 times [2024-06-21 20:06:59,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:06:59,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585513527] [2024-06-21 20:06:59,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:06:59,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:06:59,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:07:00,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:07:00,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:07:00,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585513527] [2024-06-21 20:07:00,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585513527] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:07:00,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:07:00,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 20:07:00,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81048190] [2024-06-21 20:07:00,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:07:00,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 20:07:00,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:07:00,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 20:07:00,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-21 20:07:01,050 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:07:01,050 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 336 transitions, 3839 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-21 20:07:01,050 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:07:01,050 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:07:01,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:07:01,824 INFO L124 PetriNetUnfolderBase]: 1013/1806 cut-off events. [2024-06-21 20:07:01,824 INFO L125 PetriNetUnfolderBase]: For 187036/187038 co-relation queries the response was YES. [2024-06-21 20:07:01,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11947 conditions, 1806 events. 1013/1806 cut-off events. For 187036/187038 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 10462 event pairs, 111 based on Foata normal form. 2/1807 useless extension candidates. Maximal degree in co-relation 11779. Up to 877 conditions per place. [2024-06-21 20:07:01,856 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 189 selfloop transitions, 166 changer transitions 0/357 dead transitions. [2024-06-21 20:07:01,856 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 370 places, 357 transitions, 4861 flow [2024-06-21 20:07:01,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:07:01,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:07:01,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 131 transitions. [2024-06-21 20:07:01,858 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3721590909090909 [2024-06-21 20:07:01,858 INFO L175 Difference]: Start difference. First operand has 360 places, 336 transitions, 3839 flow. Second operand 11 states and 131 transitions. [2024-06-21 20:07:01,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 370 places, 357 transitions, 4861 flow [2024-06-21 20:07:02,660 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 357 transitions, 4680 flow, removed 43 selfloop flow, removed 9 redundant places. [2024-06-21 20:07:02,663 INFO L231 Difference]: Finished difference. Result has 362 places, 336 transitions, 3995 flow [2024-06-21 20:07:02,664 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3658, PETRI_DIFFERENCE_MINUEND_PLACES=351, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=336, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=166, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3995, PETRI_PLACES=362, PETRI_TRANSITIONS=336} [2024-06-21 20:07:02,664 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 331 predicate places. [2024-06-21 20:07:02,664 INFO L495 AbstractCegarLoop]: Abstraction has has 362 places, 336 transitions, 3995 flow [2024-06-21 20:07:02,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-21 20:07:02,664 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:07:02,664 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:07:02,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-21 20:07:02,664 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)] === [2024-06-21 20:07:02,665 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:07:02,665 INFO L85 PathProgramCache]: Analyzing trace with hash 1154931377, now seen corresponding path program 11 times [2024-06-21 20:07:02,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:07:02,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659000196] [2024-06-21 20:07:02,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:07:02,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:07:02,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:07:04,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:07:04,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:07:04,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659000196] [2024-06-21 20:07:04,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659000196] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:07:04,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:07:04,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 20:07:04,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680543505] [2024-06-21 20:07:04,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:07:04,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 20:07:04,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:07:04,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 20:07:04,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-21 20:07:04,900 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:07:04,900 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 362 places, 336 transitions, 3995 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-21 20:07:04,900 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:07:04,900 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:07:04,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:07:05,731 INFO L124 PetriNetUnfolderBase]: 1009/1799 cut-off events. [2024-06-21 20:07:05,731 INFO L125 PetriNetUnfolderBase]: For 175313/175313 co-relation queries the response was YES. [2024-06-21 20:07:05,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11910 conditions, 1799 events. 1009/1799 cut-off events. For 175313/175313 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 10444 event pairs, 279 based on Foata normal form. 2/1800 useless extension candidates. Maximal degree in co-relation 11741. Up to 1728 conditions per place. [2024-06-21 20:07:05,751 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 325 selfloop transitions, 24 changer transitions 0/351 dead transitions. [2024-06-21 20:07:05,751 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 373 places, 351 transitions, 4737 flow [2024-06-21 20:07:05,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 20:07:05,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 20:07:05,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 119 transitions. [2024-06-21 20:07:05,752 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3098958333333333 [2024-06-21 20:07:05,752 INFO L175 Difference]: Start difference. First operand has 362 places, 336 transitions, 3995 flow. Second operand 12 states and 119 transitions. [2024-06-21 20:07:05,752 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 373 places, 351 transitions, 4737 flow [2024-06-21 20:07:06,415 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 364 places, 351 transitions, 4486 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-06-21 20:07:06,418 INFO L231 Difference]: Finished difference. Result has 365 places, 336 transitions, 3798 flow [2024-06-21 20:07:06,418 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3744, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=336, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=312, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3798, PETRI_PLACES=365, PETRI_TRANSITIONS=336} [2024-06-21 20:07:06,419 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 334 predicate places. [2024-06-21 20:07:06,419 INFO L495 AbstractCegarLoop]: Abstraction has has 365 places, 336 transitions, 3798 flow [2024-06-21 20:07:06,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-21 20:07:06,419 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:07:06,419 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:07:06,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-21 20:07:06,419 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)] === [2024-06-21 20:07:06,419 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:07:06,419 INFO L85 PathProgramCache]: Analyzing trace with hash 686898849, now seen corresponding path program 18 times [2024-06-21 20:07:06,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:07:06,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164424885] [2024-06-21 20:07:06,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:07:06,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:07:06,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:07:07,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:07:07,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:07:07,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164424885] [2024-06-21 20:07:07,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164424885] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:07:07,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:07:07,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 20:07:07,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33125749] [2024-06-21 20:07:07,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:07:07,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 20:07:07,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:07:07,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 20:07:07,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-21 20:07:07,736 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:07:07,737 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 336 transitions, 3798 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-21 20:07:07,737 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:07:07,737 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:07:07,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:07:08,314 INFO L124 PetriNetUnfolderBase]: 1013/1807 cut-off events. [2024-06-21 20:07:08,315 INFO L125 PetriNetUnfolderBase]: For 178713/178713 co-relation queries the response was YES. [2024-06-21 20:07:08,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11718 conditions, 1807 events. 1013/1807 cut-off events. For 178713/178713 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 10463 event pairs, 128 based on Foata normal form. 2/1808 useless extension candidates. Maximal degree in co-relation 11548. Up to 1513 conditions per place. [2024-06-21 20:07:08,337 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 275 selfloop transitions, 79 changer transitions 0/356 dead transitions. [2024-06-21 20:07:08,337 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 374 places, 356 transitions, 4618 flow [2024-06-21 20:07:08,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 20:07:08,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 20:07:08,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2024-06-21 20:07:08,338 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.359375 [2024-06-21 20:07:08,338 INFO L175 Difference]: Start difference. First operand has 365 places, 336 transitions, 3798 flow. Second operand 10 states and 115 transitions. [2024-06-21 20:07:08,338 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 374 places, 356 transitions, 4618 flow [2024-06-21 20:07:09,052 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 356 transitions, 4559 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-21 20:07:09,056 INFO L231 Difference]: Finished difference. Result has 364 places, 337 transitions, 3951 flow [2024-06-21 20:07:09,056 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3739, PETRI_DIFFERENCE_MINUEND_PLACES=354, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=336, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3951, PETRI_PLACES=364, PETRI_TRANSITIONS=337} [2024-06-21 20:07:09,056 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 333 predicate places. [2024-06-21 20:07:09,056 INFO L495 AbstractCegarLoop]: Abstraction has has 364 places, 337 transitions, 3951 flow [2024-06-21 20:07:09,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-21 20:07:09,056 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:07:09,056 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:07:09,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-21 20:07:09,056 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)] === [2024-06-21 20:07:09,057 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:07:09,057 INFO L85 PathProgramCache]: Analyzing trace with hash 687144803, now seen corresponding path program 12 times [2024-06-21 20:07:09,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:07:09,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738995372] [2024-06-21 20:07:09,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:07:09,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:07:09,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:07:10,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:07:10,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:07:10,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738995372] [2024-06-21 20:07:10,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738995372] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:07:10,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:07:10,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 20:07:10,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442132322] [2024-06-21 20:07:10,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:07:10,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 20:07:10,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:07:10,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 20:07:10,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-21 20:07:10,579 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:07:10,580 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 364 places, 337 transitions, 3951 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-21 20:07:10,580 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:07:10,580 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:07:10,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:07:11,385 INFO L124 PetriNetUnfolderBase]: 1029/1834 cut-off events. [2024-06-21 20:07:11,385 INFO L125 PetriNetUnfolderBase]: For 198720/198722 co-relation queries the response was YES. [2024-06-21 20:07:11,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12415 conditions, 1834 events. 1029/1834 cut-off events. For 198720/198722 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 10639 event pairs, 130 based on Foata normal form. 2/1835 useless extension candidates. Maximal degree in co-relation 12244. Up to 1482 conditions per place. [2024-06-21 20:07:11,405 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 273 selfloop transitions, 90 changer transitions 0/365 dead transitions. [2024-06-21 20:07:11,405 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 374 places, 365 transitions, 5155 flow [2024-06-21 20:07:11,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:07:11,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:07:11,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-21 20:07:11,406 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3693181818181818 [2024-06-21 20:07:11,406 INFO L175 Difference]: Start difference. First operand has 364 places, 337 transitions, 3951 flow. Second operand 11 states and 130 transitions. [2024-06-21 20:07:11,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 374 places, 365 transitions, 5155 flow [2024-06-21 20:07:12,188 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 366 places, 365 transitions, 4953 flow, removed 23 selfloop flow, removed 8 redundant places. [2024-06-21 20:07:12,192 INFO L231 Difference]: Finished difference. Result has 367 places, 341 transitions, 4082 flow [2024-06-21 20:07:12,192 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3749, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=337, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4082, PETRI_PLACES=367, PETRI_TRANSITIONS=341} [2024-06-21 20:07:12,192 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 336 predicate places. [2024-06-21 20:07:12,192 INFO L495 AbstractCegarLoop]: Abstraction has has 367 places, 341 transitions, 4082 flow [2024-06-21 20:07:12,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-21 20:07:12,193 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:07:12,193 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:07:12,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-21 20:07:12,193 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)] === [2024-06-21 20:07:12,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:07:12,194 INFO L85 PathProgramCache]: Analyzing trace with hash -2145109339, now seen corresponding path program 13 times [2024-06-21 20:07:12,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:07:12,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22852280] [2024-06-21 20:07:12,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:07:12,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:07:12,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:07:14,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:07:14,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:07:14,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22852280] [2024-06-21 20:07:14,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22852280] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:07:14,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:07:14,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 20:07:14,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766629857] [2024-06-21 20:07:14,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:07:14,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 20:07:14,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:07:14,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 20:07:14,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-21 20:07:14,507 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:07:14,508 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 367 places, 341 transitions, 4082 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-21 20:07:14,508 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:07:14,508 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:07:14,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:07:15,219 INFO L124 PetriNetUnfolderBase]: 1035/1844 cut-off events. [2024-06-21 20:07:15,220 INFO L125 PetriNetUnfolderBase]: For 201783/201785 co-relation queries the response was YES. [2024-06-21 20:07:15,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12519 conditions, 1844 events. 1035/1844 cut-off events. For 201783/201785 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 10715 event pairs, 131 based on Foata normal form. 2/1845 useless extension candidates. Maximal degree in co-relation 12347. Up to 1517 conditions per place. [2024-06-21 20:07:15,248 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 276 selfloop transitions, 87 changer transitions 0/365 dead transitions. [2024-06-21 20:07:15,248 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 377 places, 365 transitions, 4962 flow [2024-06-21 20:07:15,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:07:15,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:07:15,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-21 20:07:15,249 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36079545454545453 [2024-06-21 20:07:15,249 INFO L175 Difference]: Start difference. First operand has 367 places, 341 transitions, 4082 flow. Second operand 11 states and 127 transitions. [2024-06-21 20:07:15,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 377 places, 365 transitions, 4962 flow [2024-06-21 20:07:15,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 369 places, 365 transitions, 4682 flow, removed 56 selfloop flow, removed 8 redundant places. [2024-06-21 20:07:15,975 INFO L231 Difference]: Finished difference. Result has 370 places, 343 transitions, 4061 flow [2024-06-21 20:07:15,975 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3826, PETRI_DIFFERENCE_MINUEND_PLACES=359, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=341, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4061, PETRI_PLACES=370, PETRI_TRANSITIONS=343} [2024-06-21 20:07:15,975 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 339 predicate places. [2024-06-21 20:07:15,975 INFO L495 AbstractCegarLoop]: Abstraction has has 370 places, 343 transitions, 4061 flow [2024-06-21 20:07:15,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-21 20:07:15,975 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:07:15,975 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:07:15,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-21 20:07:15,976 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)] === [2024-06-21 20:07:15,976 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:07:15,976 INFO L85 PathProgramCache]: Analyzing trace with hash 1483497381, now seen corresponding path program 14 times [2024-06-21 20:07:15,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:07:15,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812694074] [2024-06-21 20:07:15,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:07:15,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:07:15,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:07:17,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:07:17,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:07:17,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812694074] [2024-06-21 20:07:17,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812694074] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:07:17,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:07:17,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 20:07:17,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903203598] [2024-06-21 20:07:17,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:07:17,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 20:07:17,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:07:17,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 20:07:17,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-21 20:07:17,390 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:07:17,390 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 370 places, 343 transitions, 4061 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-21 20:07:17,390 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:07:17,390 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:07:17,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:07:18,008 INFO L124 PetriNetUnfolderBase]: 1031/1838 cut-off events. [2024-06-21 20:07:18,008 INFO L125 PetriNetUnfolderBase]: For 187075/187077 co-relation queries the response was YES. [2024-06-21 20:07:18,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12098 conditions, 1838 events. 1031/1838 cut-off events. For 187075/187077 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 10703 event pairs, 187 based on Foata normal form. 2/1839 useless extension candidates. Maximal degree in co-relation 11925. Up to 1657 conditions per place. [2024-06-21 20:07:18,032 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 307 selfloop transitions, 51 changer transitions 0/360 dead transitions. [2024-06-21 20:07:18,032 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 380 places, 360 transitions, 4829 flow [2024-06-21 20:07:18,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:07:18,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:07:18,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 117 transitions. [2024-06-21 20:07:18,033 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33238636363636365 [2024-06-21 20:07:18,033 INFO L175 Difference]: Start difference. First operand has 370 places, 343 transitions, 4061 flow. Second operand 11 states and 117 transitions. [2024-06-21 20:07:18,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 380 places, 360 transitions, 4829 flow [2024-06-21 20:07:18,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 360 transitions, 4592 flow, removed 33 selfloop flow, removed 9 redundant places. [2024-06-21 20:07:18,738 INFO L231 Difference]: Finished difference. Result has 372 places, 343 transitions, 3931 flow [2024-06-21 20:07:18,739 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3824, PETRI_DIFFERENCE_MINUEND_PLACES=361, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=343, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3931, PETRI_PLACES=372, PETRI_TRANSITIONS=343} [2024-06-21 20:07:18,739 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 341 predicate places. [2024-06-21 20:07:18,739 INFO L495 AbstractCegarLoop]: Abstraction has has 372 places, 343 transitions, 3931 flow [2024-06-21 20:07:18,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-21 20:07:18,739 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:07:18,739 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:07:18,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-21 20:07:18,740 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)] === [2024-06-21 20:07:18,741 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:07:18,741 INFO L85 PathProgramCache]: Analyzing trace with hash -233836957, now seen corresponding path program 19 times [2024-06-21 20:07:18,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:07:18,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697329594] [2024-06-21 20:07:18,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:07:18,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:07:18,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:07:19,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:07:19,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:07:19,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697329594] [2024-06-21 20:07:19,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697329594] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:07:19,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:07:19,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 20:07:19,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987992010] [2024-06-21 20:07:19,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:07:19,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 20:07:19,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:07:19,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 20:07:19,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-21 20:07:19,928 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:07:19,928 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 372 places, 343 transitions, 3931 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-21 20:07:19,928 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:07:19,928 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:07:19,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:07:20,550 INFO L124 PetriNetUnfolderBase]: 1035/1846 cut-off events. [2024-06-21 20:07:20,550 INFO L125 PetriNetUnfolderBase]: For 190652/190654 co-relation queries the response was YES. [2024-06-21 20:07:20,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12052 conditions, 1846 events. 1035/1846 cut-off events. For 190652/190654 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 10771 event pairs, 185 based on Foata normal form. 2/1847 useless extension candidates. Maximal degree in co-relation 11878. Up to 1644 conditions per place. [2024-06-21 20:07:20,573 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 303 selfloop transitions, 56 changer transitions 0/361 dead transitions. [2024-06-21 20:07:20,573 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 381 places, 361 transitions, 4751 flow [2024-06-21 20:07:20,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 20:07:20,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 20:07:20,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-21 20:07:20,574 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35 [2024-06-21 20:07:20,574 INFO L175 Difference]: Start difference. First operand has 372 places, 343 transitions, 3931 flow. Second operand 10 states and 112 transitions. [2024-06-21 20:07:20,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 381 places, 361 transitions, 4751 flow [2024-06-21 20:07:21,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 372 places, 361 transitions, 4646 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-21 20:07:21,146 INFO L231 Difference]: Finished difference. Result has 373 places, 344 transitions, 3996 flow [2024-06-21 20:07:21,146 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3826, PETRI_DIFFERENCE_MINUEND_PLACES=363, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=343, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3996, PETRI_PLACES=373, PETRI_TRANSITIONS=344} [2024-06-21 20:07:21,147 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 342 predicate places. [2024-06-21 20:07:21,147 INFO L495 AbstractCegarLoop]: Abstraction has has 373 places, 344 transitions, 3996 flow [2024-06-21 20:07:21,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-21 20:07:21,147 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:07:21,147 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:07:21,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-21 20:07:21,148 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)] === [2024-06-21 20:07:21,148 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:07:21,148 INFO L85 PathProgramCache]: Analyzing trace with hash -257727869, now seen corresponding path program 15 times [2024-06-21 20:07:21,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:07:21,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402509304] [2024-06-21 20:07:21,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:07:21,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:07:21,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:07:22,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:07:22,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:07:22,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402509304] [2024-06-21 20:07:22,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402509304] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:07:22,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:07:22,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 20:07:22,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156004710] [2024-06-21 20:07:22,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:07:22,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 20:07:22,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:07:22,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 20:07:22,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-21 20:07:22,784 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:07:22,785 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 373 places, 344 transitions, 3996 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-21 20:07:22,785 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:07:22,785 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:07:22,785 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:07:23,500 INFO L124 PetriNetUnfolderBase]: 1041/1856 cut-off events. [2024-06-21 20:07:23,500 INFO L125 PetriNetUnfolderBase]: For 193912/193914 co-relation queries the response was YES. [2024-06-21 20:07:23,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12188 conditions, 1856 events. 1041/1856 cut-off events. For 193912/193914 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 10801 event pairs, 127 based on Foata normal form. 2/1857 useless extension candidates. Maximal degree in co-relation 12013. Up to 1529 conditions per place. [2024-06-21 20:07:23,523 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 279 selfloop transitions, 86 changer transitions 0/367 dead transitions. [2024-06-21 20:07:23,523 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 367 transitions, 4854 flow [2024-06-21 20:07:23,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:07:23,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:07:23,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-21 20:07:23,524 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36079545454545453 [2024-06-21 20:07:23,524 INFO L175 Difference]: Start difference. First operand has 373 places, 344 transitions, 3996 flow. Second operand 11 states and 127 transitions. [2024-06-21 20:07:23,524 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 367 transitions, 4854 flow [2024-06-21 20:07:24,298 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 367 transitions, 4696 flow, removed 25 selfloop flow, removed 8 redundant places. [2024-06-21 20:07:24,301 INFO L231 Difference]: Finished difference. Result has 376 places, 346 transitions, 4075 flow [2024-06-21 20:07:24,301 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3838, PETRI_DIFFERENCE_MINUEND_PLACES=365, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=344, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4075, PETRI_PLACES=376, PETRI_TRANSITIONS=346} [2024-06-21 20:07:24,301 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 345 predicate places. [2024-06-21 20:07:24,302 INFO L495 AbstractCegarLoop]: Abstraction has has 376 places, 346 transitions, 4075 flow [2024-06-21 20:07:24,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-21 20:07:24,302 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:07:24,302 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:07:24,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-21 20:07:24,302 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)] === [2024-06-21 20:07:24,303 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:07:24,303 INFO L85 PathProgramCache]: Analyzing trace with hash -264163903, now seen corresponding path program 20 times [2024-06-21 20:07:24,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:07:24,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395717562] [2024-06-21 20:07:24,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:07:24,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:07:24,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:07:25,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:07:25,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:07:25,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395717562] [2024-06-21 20:07:25,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395717562] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:07:25,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:07:25,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 20:07:25,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101658822] [2024-06-21 20:07:25,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:07:25,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 20:07:25,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:07:25,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 20:07:25,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-21 20:07:25,622 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:07:25,622 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 376 places, 346 transitions, 4075 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-21 20:07:25,622 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:07:25,622 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:07:25,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:07:26,236 INFO L124 PetriNetUnfolderBase]: 1045/1864 cut-off events. [2024-06-21 20:07:26,236 INFO L125 PetriNetUnfolderBase]: For 193920/193922 co-relation queries the response was YES. [2024-06-21 20:07:26,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12306 conditions, 1864 events. 1045/1864 cut-off events. For 193920/193922 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 10874 event pairs, 135 based on Foata normal form. 2/1865 useless extension candidates. Maximal degree in co-relation 12130. Up to 1583 conditions per place. [2024-06-21 20:07:26,259 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 286 selfloop transitions, 76 changer transitions 0/364 dead transitions. [2024-06-21 20:07:26,259 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 385 places, 364 transitions, 4903 flow [2024-06-21 20:07:26,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 20:07:26,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 20:07:26,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-21 20:07:26,259 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.346875 [2024-06-21 20:07:26,260 INFO L175 Difference]: Start difference. First operand has 376 places, 346 transitions, 4075 flow. Second operand 10 states and 111 transitions. [2024-06-21 20:07:26,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 385 places, 364 transitions, 4903 flow [2024-06-21 20:07:27,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 376 places, 364 transitions, 4692 flow, removed 21 selfloop flow, removed 9 redundant places. [2024-06-21 20:07:27,017 INFO L231 Difference]: Finished difference. Result has 377 places, 347 transitions, 4072 flow [2024-06-21 20:07:27,017 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3864, PETRI_DIFFERENCE_MINUEND_PLACES=367, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=346, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4072, PETRI_PLACES=377, PETRI_TRANSITIONS=347} [2024-06-21 20:07:27,017 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 346 predicate places. [2024-06-21 20:07:27,018 INFO L495 AbstractCegarLoop]: Abstraction has has 377 places, 347 transitions, 4072 flow [2024-06-21 20:07:27,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-21 20:07:27,018 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:07:27,018 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:07:27,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-21 20:07:27,018 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)] === [2024-06-21 20:07:27,018 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:07:27,018 INFO L85 PathProgramCache]: Analyzing trace with hash -264168553, now seen corresponding path program 21 times [2024-06-21 20:07:27,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:07:27,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376760461] [2024-06-21 20:07:27,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:07:27,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:07:27,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:07:28,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:07:28,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:07:28,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376760461] [2024-06-21 20:07:28,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376760461] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:07:28,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:07:28,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 20:07:28,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338991783] [2024-06-21 20:07:28,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:07:28,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 20:07:28,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:07:28,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 20:07:28,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-21 20:07:28,158 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:07:28,158 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 347 transitions, 4072 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-21 20:07:28,158 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:07:28,158 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:07:28,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:07:28,790 INFO L124 PetriNetUnfolderBase]: 1049/1872 cut-off events. [2024-06-21 20:07:28,790 INFO L125 PetriNetUnfolderBase]: For 197705/197707 co-relation queries the response was YES. [2024-06-21 20:07:28,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12374 conditions, 1872 events. 1049/1872 cut-off events. For 197705/197707 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 10957 event pairs, 122 based on Foata normal form. 2/1873 useless extension candidates. Maximal degree in co-relation 12197. Up to 1409 conditions per place. [2024-06-21 20:07:28,814 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 258 selfloop transitions, 105 changer transitions 0/365 dead transitions. [2024-06-21 20:07:28,814 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 386 places, 365 transitions, 4902 flow [2024-06-21 20:07:28,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 20:07:28,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 20:07:28,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 114 transitions. [2024-06-21 20:07:28,815 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35625 [2024-06-21 20:07:28,815 INFO L175 Difference]: Start difference. First operand has 377 places, 347 transitions, 4072 flow. Second operand 10 states and 114 transitions. [2024-06-21 20:07:28,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 386 places, 365 transitions, 4902 flow [2024-06-21 20:07:29,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 378 places, 365 transitions, 4704 flow, removed 24 selfloop flow, removed 8 redundant places. [2024-06-21 20:07:29,465 INFO L231 Difference]: Finished difference. Result has 379 places, 348 transitions, 4142 flow [2024-06-21 20:07:29,465 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3874, PETRI_DIFFERENCE_MINUEND_PLACES=369, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=347, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4142, PETRI_PLACES=379, PETRI_TRANSITIONS=348} [2024-06-21 20:07:29,465 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 348 predicate places. [2024-06-21 20:07:29,466 INFO L495 AbstractCegarLoop]: Abstraction has has 379 places, 348 transitions, 4142 flow [2024-06-21 20:07:29,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-21 20:07:29,466 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:07:29,466 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:07:29,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-06-21 20:07:29,466 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)] === [2024-06-21 20:07:29,466 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:07:29,466 INFO L85 PathProgramCache]: Analyzing trace with hash 25321557, now seen corresponding path program 16 times [2024-06-21 20:07:29,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:07:29,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891452245] [2024-06-21 20:07:29,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:07:29,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:07:29,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:07:31,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:07:31,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:07:31,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891452245] [2024-06-21 20:07:31,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891452245] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:07:31,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:07:31,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 20:07:31,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491950168] [2024-06-21 20:07:31,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:07:31,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 20:07:31,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:07:31,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 20:07:31,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-21 20:07:31,486 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:07:31,487 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 379 places, 348 transitions, 4142 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-21 20:07:31,487 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:07:31,487 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:07:31,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:07:32,415 INFO L124 PetriNetUnfolderBase]: 1061/1892 cut-off events. [2024-06-21 20:07:32,415 INFO L125 PetriNetUnfolderBase]: For 200751/200753 co-relation queries the response was YES. [2024-06-21 20:07:32,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12546 conditions, 1892 events. 1061/1892 cut-off events. For 200751/200753 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 11122 event pairs, 177 based on Foata normal form. 2/1893 useless extension candidates. Maximal degree in co-relation 12368. Up to 1530 conditions per place. [2024-06-21 20:07:32,439 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 276 selfloop transitions, 96 changer transitions 0/374 dead transitions. [2024-06-21 20:07:32,439 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 389 places, 374 transitions, 5310 flow [2024-06-21 20:07:32,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:07:32,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:07:32,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 128 transitions. [2024-06-21 20:07:32,440 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-21 20:07:32,440 INFO L175 Difference]: Start difference. First operand has 379 places, 348 transitions, 4142 flow. Second operand 11 states and 128 transitions. [2024-06-21 20:07:32,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 389 places, 374 transitions, 5310 flow [2024-06-21 20:07:33,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 381 places, 374 transitions, 5052 flow, removed 25 selfloop flow, removed 8 redundant places. [2024-06-21 20:07:33,339 INFO L231 Difference]: Finished difference. Result has 382 places, 352 transitions, 4174 flow [2024-06-21 20:07:33,339 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3884, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=348, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4174, PETRI_PLACES=382, PETRI_TRANSITIONS=352} [2024-06-21 20:07:33,340 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 351 predicate places. [2024-06-21 20:07:33,340 INFO L495 AbstractCegarLoop]: Abstraction has has 382 places, 352 transitions, 4174 flow [2024-06-21 20:07:33,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-21 20:07:33,340 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:07:33,340 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:07:33,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-06-21 20:07:33,340 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)] === [2024-06-21 20:07:33,341 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:07:33,341 INFO L85 PathProgramCache]: Analyzing trace with hash -227161603, now seen corresponding path program 2 times [2024-06-21 20:07:33,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:07:33,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353104573] [2024-06-21 20:07:33,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:07:33,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:07:33,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:07:35,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:07:35,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:07:35,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353104573] [2024-06-21 20:07:35,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353104573] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:07:35,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:07:35,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 20:07:35,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757964442] [2024-06-21 20:07:35,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:07:35,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 20:07:35,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:07:35,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 20:07:35,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-21 20:07:35,523 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:07:35,523 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 382 places, 352 transitions, 4174 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-21 20:07:35,523 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:07:35,523 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:07:35,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:07:36,343 INFO L124 PetriNetUnfolderBase]: 1058/1887 cut-off events. [2024-06-21 20:07:36,343 INFO L125 PetriNetUnfolderBase]: For 185179/185181 co-relation queries the response was YES. [2024-06-21 20:07:36,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12173 conditions, 1887 events. 1058/1887 cut-off events. For 185179/185181 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 11090 event pairs, 239 based on Foata normal form. 2/1888 useless extension candidates. Maximal degree in co-relation 11994. Up to 1758 conditions per place. [2024-06-21 20:07:36,375 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 328 selfloop transitions, 38 changer transitions 0/368 dead transitions. [2024-06-21 20:07:36,375 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 392 places, 368 transitions, 4960 flow [2024-06-21 20:07:36,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:07:36,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:07:36,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 114 transitions. [2024-06-21 20:07:36,375 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32386363636363635 [2024-06-21 20:07:36,376 INFO L175 Difference]: Start difference. First operand has 382 places, 352 transitions, 4174 flow. Second operand 11 states and 114 transitions. [2024-06-21 20:07:36,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 392 places, 368 transitions, 4960 flow [2024-06-21 20:07:37,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 379 places, 368 transitions, 4372 flow, removed 37 selfloop flow, removed 13 redundant places. [2024-06-21 20:07:37,064 INFO L231 Difference]: Finished difference. Result has 380 places, 352 transitions, 3668 flow [2024-06-21 20:07:37,065 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3586, PETRI_DIFFERENCE_MINUEND_PLACES=369, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=352, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=314, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3668, PETRI_PLACES=380, PETRI_TRANSITIONS=352} [2024-06-21 20:07:37,065 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 349 predicate places. [2024-06-21 20:07:37,065 INFO L495 AbstractCegarLoop]: Abstraction has has 380 places, 352 transitions, 3668 flow [2024-06-21 20:07:37,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-21 20:07:37,065 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:07:37,066 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:07:37,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-06-21 20:07:37,066 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)] === [2024-06-21 20:07:37,066 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:07:37,066 INFO L85 PathProgramCache]: Analyzing trace with hash -233841607, now seen corresponding path program 22 times [2024-06-21 20:07:37,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:07:37,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094170921] [2024-06-21 20:07:37,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:07:37,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:07:37,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:07:38,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:07:38,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:07:38,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094170921] [2024-06-21 20:07:38,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094170921] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:07:38,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:07:38,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 20:07:38,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616579972] [2024-06-21 20:07:38,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:07:38,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 20:07:38,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:07:38,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 20:07:38,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-21 20:07:38,315 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:07:38,316 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 352 transitions, 3668 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-21 20:07:38,316 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:07:38,316 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:07:38,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:07:38,924 INFO L124 PetriNetUnfolderBase]: 1055/1882 cut-off events. [2024-06-21 20:07:38,924 INFO L125 PetriNetUnfolderBase]: For 168061/168063 co-relation queries the response was YES. [2024-06-21 20:07:38,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11146 conditions, 1882 events. 1055/1882 cut-off events. For 168061/168063 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 11054 event pairs, 193 based on Foata normal form. 2/1883 useless extension candidates. Maximal degree in co-relation 10969. Up to 1680 conditions per place. [2024-06-21 20:07:38,947 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 313 selfloop transitions, 54 changer transitions 0/369 dead transitions. [2024-06-21 20:07:38,947 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 389 places, 369 transitions, 4452 flow [2024-06-21 20:07:38,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 20:07:38,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 20:07:38,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-21 20:07:38,948 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.346875 [2024-06-21 20:07:38,948 INFO L175 Difference]: Start difference. First operand has 380 places, 352 transitions, 3668 flow. Second operand 10 states and 111 transitions. [2024-06-21 20:07:38,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 389 places, 369 transitions, 4452 flow [2024-06-21 20:07:39,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 378 places, 369 transitions, 4299 flow, removed 13 selfloop flow, removed 11 redundant places. [2024-06-21 20:07:39,602 INFO L231 Difference]: Finished difference. Result has 379 places, 352 transitions, 3629 flow [2024-06-21 20:07:39,602 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3515, PETRI_DIFFERENCE_MINUEND_PLACES=369, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=352, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3629, PETRI_PLACES=379, PETRI_TRANSITIONS=352} [2024-06-21 20:07:39,603 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 348 predicate places. [2024-06-21 20:07:39,603 INFO L495 AbstractCegarLoop]: Abstraction has has 379 places, 352 transitions, 3629 flow [2024-06-21 20:07:39,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-21 20:07:39,603 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:07:39,603 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:07:39,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-06-21 20:07:39,603 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)] === [2024-06-21 20:07:39,603 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:07:39,603 INFO L85 PathProgramCache]: Analyzing trace with hash -263983979, now seen corresponding path program 17 times [2024-06-21 20:07:39,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:07:39,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647088600] [2024-06-21 20:07:39,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:07:39,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:07:39,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:07:41,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:07:41,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:07:41,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647088600] [2024-06-21 20:07:41,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647088600] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:07:41,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:07:41,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 20:07:41,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997327452] [2024-06-21 20:07:41,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:07:41,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 20:07:41,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:07:41,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 20:07:41,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-21 20:07:41,464 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:07:41,465 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 379 places, 352 transitions, 3629 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-21 20:07:41,465 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:07:41,465 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:07:41,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:07:42,285 INFO L124 PetriNetUnfolderBase]: 1051/1876 cut-off events. [2024-06-21 20:07:42,285 INFO L125 PetriNetUnfolderBase]: For 150505/150507 co-relation queries the response was YES. [2024-06-21 20:07:42,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10716 conditions, 1876 events. 1051/1876 cut-off events. For 150505/150507 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 11022 event pairs, 139 based on Foata normal form. 2/1877 useless extension candidates. Maximal degree in co-relation 10540. Up to 1585 conditions per place. [2024-06-21 20:07:42,304 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 290 selfloop transitions, 79 changer transitions 0/371 dead transitions. [2024-06-21 20:07:42,304 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 389 places, 371 transitions, 4429 flow [2024-06-21 20:07:42,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:07:42,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:07:42,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-21 20:07:42,305 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-21 20:07:42,305 INFO L175 Difference]: Start difference. First operand has 379 places, 352 transitions, 3629 flow. Second operand 11 states and 121 transitions. [2024-06-21 20:07:42,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 389 places, 371 transitions, 4429 flow [2024-06-21 20:07:43,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 378 places, 371 transitions, 4101 flow, removed 51 selfloop flow, removed 11 redundant places. [2024-06-21 20:07:43,115 INFO L231 Difference]: Finished difference. Result has 379 places, 352 transitions, 3464 flow [2024-06-21 20:07:43,115 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3301, PETRI_DIFFERENCE_MINUEND_PLACES=368, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=352, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3464, PETRI_PLACES=379, PETRI_TRANSITIONS=352} [2024-06-21 20:07:43,115 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 348 predicate places. [2024-06-21 20:07:43,115 INFO L495 AbstractCegarLoop]: Abstraction has has 379 places, 352 transitions, 3464 flow [2024-06-21 20:07:43,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-21 20:07:43,115 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:07:43,115 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:07:43,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-06-21 20:07:43,116 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)] === [2024-06-21 20:07:43,120 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:07:43,120 INFO L85 PathProgramCache]: Analyzing trace with hash -233657033, now seen corresponding path program 18 times [2024-06-21 20:07:43,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:07:43,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854067345] [2024-06-21 20:07:43,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:07:43,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:07:43,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:07:44,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:07:44,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:07:44,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854067345] [2024-06-21 20:07:44,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854067345] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:07:44,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:07:44,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 20:07:44,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527009199] [2024-06-21 20:07:44,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:07:44,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 20:07:44,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:07:44,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 20:07:44,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-21 20:07:44,871 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:07:44,871 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 379 places, 352 transitions, 3464 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-21 20:07:44,871 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:07:44,871 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:07:44,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:07:45,648 INFO L124 PetriNetUnfolderBase]: 1057/1886 cut-off events. [2024-06-21 20:07:45,649 INFO L125 PetriNetUnfolderBase]: For 140595/140597 co-relation queries the response was YES. [2024-06-21 20:07:45,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10444 conditions, 1886 events. 1057/1886 cut-off events. For 140595/140597 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 11117 event pairs, 188 based on Foata normal form. 2/1887 useless extension candidates. Maximal degree in co-relation 10269. Up to 1664 conditions per place. [2024-06-21 20:07:45,666 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 309 selfloop transitions, 62 changer transitions 0/373 dead transitions. [2024-06-21 20:07:45,666 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 389 places, 373 transitions, 4324 flow [2024-06-21 20:07:45,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:07:45,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:07:45,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-21 20:07:45,667 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3465909090909091 [2024-06-21 20:07:45,667 INFO L175 Difference]: Start difference. First operand has 379 places, 352 transitions, 3464 flow. Second operand 11 states and 122 transitions. [2024-06-21 20:07:45,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 389 places, 373 transitions, 4324 flow [2024-06-21 20:07:46,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 379 places, 373 transitions, 4143 flow, removed 7 selfloop flow, removed 10 redundant places. [2024-06-21 20:07:46,214 INFO L231 Difference]: Finished difference. Result has 380 places, 354 transitions, 3477 flow [2024-06-21 20:07:46,214 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3283, PETRI_DIFFERENCE_MINUEND_PLACES=369, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=352, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=290, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3477, PETRI_PLACES=380, PETRI_TRANSITIONS=354} [2024-06-21 20:07:46,215 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 349 predicate places. [2024-06-21 20:07:46,215 INFO L495 AbstractCegarLoop]: Abstraction has has 380 places, 354 transitions, 3477 flow [2024-06-21 20:07:46,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-21 20:07:46,215 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:07:46,215 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:07:46,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-06-21 20:07:46,215 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)] === [2024-06-21 20:07:46,215 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:07:46,215 INFO L85 PathProgramCache]: Analyzing trace with hash -1689883437, now seen corresponding path program 19 times [2024-06-21 20:07:46,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:07:46,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814746608] [2024-06-21 20:07:46,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:07:46,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:07:46,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:07:47,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:07:47,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:07:47,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814746608] [2024-06-21 20:07:47,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814746608] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:07:47,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:07:47,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 20:07:47,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163186139] [2024-06-21 20:07:47,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:07:47,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 20:07:47,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:07:47,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 20:07:47,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-21 20:07:47,855 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:07:47,856 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 354 transitions, 3477 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-21 20:07:47,856 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:07:47,856 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:07:47,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:07:48,717 INFO L124 PetriNetUnfolderBase]: 1053/1880 cut-off events. [2024-06-21 20:07:48,717 INFO L125 PetriNetUnfolderBase]: For 124237/124239 co-relation queries the response was YES. [2024-06-21 20:07:48,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10076 conditions, 1880 events. 1053/1880 cut-off events. For 124237/124239 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 11071 event pairs, 169 based on Foata normal form. 2/1881 useless extension candidates. Maximal degree in co-relation 9900. Up to 1517 conditions per place. [2024-06-21 20:07:48,734 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 276 selfloop transitions, 100 changer transitions 0/378 dead transitions. [2024-06-21 20:07:48,735 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 391 places, 378 transitions, 4313 flow [2024-06-21 20:07:48,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 20:07:48,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 20:07:48,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 137 transitions. [2024-06-21 20:07:48,735 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3567708333333333 [2024-06-21 20:07:48,735 INFO L175 Difference]: Start difference. First operand has 380 places, 354 transitions, 3477 flow. Second operand 12 states and 137 transitions. [2024-06-21 20:07:48,735 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 391 places, 378 transitions, 4313 flow [2024-06-21 20:07:49,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 380 places, 378 transitions, 4045 flow, removed 38 selfloop flow, removed 11 redundant places. [2024-06-21 20:07:49,277 INFO L231 Difference]: Finished difference. Result has 381 places, 354 transitions, 3423 flow [2024-06-21 20:07:49,277 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3209, PETRI_DIFFERENCE_MINUEND_PLACES=369, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=354, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3423, PETRI_PLACES=381, PETRI_TRANSITIONS=354} [2024-06-21 20:07:49,277 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 350 predicate places. [2024-06-21 20:07:49,277 INFO L495 AbstractCegarLoop]: Abstraction has has 381 places, 354 transitions, 3423 flow [2024-06-21 20:07:49,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-21 20:07:49,277 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:07:49,278 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:07:49,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2024-06-21 20:07:49,278 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)] === [2024-06-21 20:07:49,278 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:07:49,278 INFO L85 PathProgramCache]: Analyzing trace with hash 302681040, now seen corresponding path program 1 times [2024-06-21 20:07:49,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:07:49,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914144424] [2024-06-21 20:07:49,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:07:49,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:07:49,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:07:50,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:07:50,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:07:50,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914144424] [2024-06-21 20:07:50,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914144424] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:07:50,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:07:50,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-21 20:07:50,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229863773] [2024-06-21 20:07:50,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:07:50,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-21 20:07:50,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:07:50,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-21 20:07:50,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-21 20:07:50,715 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:07:50,716 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 381 places, 354 transitions, 3423 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 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) [2024-06-21 20:07:50,716 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:07:50,716 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:07:50,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:07:51,459 INFO L124 PetriNetUnfolderBase]: 1057/1887 cut-off events. [2024-06-21 20:07:51,460 INFO L125 PetriNetUnfolderBase]: For 123607/123607 co-relation queries the response was YES. [2024-06-21 20:07:51,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9989 conditions, 1887 events. 1057/1887 cut-off events. For 123607/123607 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 11124 event pairs, 215 based on Foata normal form. 2/1888 useless extension candidates. Maximal degree in co-relation 9814. Up to 1702 conditions per place. [2024-06-21 20:07:51,482 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 316 selfloop transitions, 56 changer transitions 0/374 dead transitions. [2024-06-21 20:07:51,482 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 391 places, 374 transitions, 4241 flow [2024-06-21 20:07:51,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:07:51,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:07:51,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 116 transitions. [2024-06-21 20:07:51,483 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32954545454545453 [2024-06-21 20:07:51,483 INFO L175 Difference]: Start difference. First operand has 381 places, 354 transitions, 3423 flow. Second operand 11 states and 116 transitions. [2024-06-21 20:07:51,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 391 places, 374 transitions, 4241 flow [2024-06-21 20:07:51,907 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 377 places, 374 transitions, 3888 flow, removed 13 selfloop flow, removed 14 redundant places. [2024-06-21 20:07:51,910 INFO L231 Difference]: Finished difference. Result has 378 places, 355 transitions, 3213 flow [2024-06-21 20:07:51,910 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3070, PETRI_DIFFERENCE_MINUEND_PLACES=367, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=354, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3213, PETRI_PLACES=378, PETRI_TRANSITIONS=355} [2024-06-21 20:07:51,911 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 347 predicate places. [2024-06-21 20:07:51,911 INFO L495 AbstractCegarLoop]: Abstraction has has 378 places, 355 transitions, 3213 flow [2024-06-21 20:07:51,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 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) [2024-06-21 20:07:51,911 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:07:51,911 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:07:51,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2024-06-21 20:07:51,911 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)] === [2024-06-21 20:07:51,911 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:07:51,911 INFO L85 PathProgramCache]: Analyzing trace with hash -2102342692, now seen corresponding path program 2 times [2024-06-21 20:07:51,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:07:51,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232554] [2024-06-21 20:07:51,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:07:51,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:07:51,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:07:53,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:07:53,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:07:53,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232554] [2024-06-21 20:07:53,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232554] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:07:53,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:07:53,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-21 20:07:53,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483821078] [2024-06-21 20:07:53,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:07:53,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-21 20:07:53,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:07:53,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-21 20:07:53,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-21 20:07:53,585 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:07:53,585 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 378 places, 355 transitions, 3213 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 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) [2024-06-21 20:07:53,585 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:07:53,585 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:07:53,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:07:54,254 INFO L124 PetriNetUnfolderBase]: 1061/1895 cut-off events. [2024-06-21 20:07:54,255 INFO L125 PetriNetUnfolderBase]: For 121805/121805 co-relation queries the response was YES. [2024-06-21 20:07:54,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9540 conditions, 1895 events. 1061/1895 cut-off events. For 121805/121805 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 11175 event pairs, 215 based on Foata normal form. 2/1896 useless extension candidates. Maximal degree in co-relation 9368. Up to 1724 conditions per place. [2024-06-21 20:07:54,279 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 324 selfloop transitions, 49 changer transitions 0/375 dead transitions. [2024-06-21 20:07:54,279 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 388 places, 375 transitions, 4033 flow [2024-06-21 20:07:54,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:07:54,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:07:54,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 115 transitions. [2024-06-21 20:07:54,280 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32670454545454547 [2024-06-21 20:07:54,281 INFO L175 Difference]: Start difference. First operand has 378 places, 355 transitions, 3213 flow. Second operand 11 states and 115 transitions. [2024-06-21 20:07:54,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 388 places, 375 transitions, 4033 flow [2024-06-21 20:07:54,813 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 379 places, 375 transitions, 3906 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-06-21 20:07:54,817 INFO L231 Difference]: Finished difference. Result has 380 places, 356 transitions, 3214 flow [2024-06-21 20:07:54,817 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3086, PETRI_DIFFERENCE_MINUEND_PLACES=369, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=355, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=306, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3214, PETRI_PLACES=380, PETRI_TRANSITIONS=356} [2024-06-21 20:07:54,817 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 349 predicate places. [2024-06-21 20:07:54,817 INFO L495 AbstractCegarLoop]: Abstraction has has 380 places, 356 transitions, 3214 flow [2024-06-21 20:07:54,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 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) [2024-06-21 20:07:54,817 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:07:54,817 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:07:54,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2024-06-21 20:07:54,818 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)] === [2024-06-21 20:07:54,818 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:07:54,818 INFO L85 PathProgramCache]: Analyzing trace with hash -2018535004, now seen corresponding path program 3 times [2024-06-21 20:07:54,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:07:54,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127057557] [2024-06-21 20:07:54,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:07:54,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:07:54,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:07:56,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:07:56,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:07:56,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127057557] [2024-06-21 20:07:56,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127057557] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:07:56,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:07:56,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-21 20:07:56,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858469480] [2024-06-21 20:07:56,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:07:56,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-21 20:07:56,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:07:56,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-21 20:07:56,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-21 20:07:56,582 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:07:56,582 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 356 transitions, 3214 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 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) [2024-06-21 20:07:56,582 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:07:56,582 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:07:56,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:07:57,278 INFO L124 PetriNetUnfolderBase]: 1065/1903 cut-off events. [2024-06-21 20:07:57,278 INFO L125 PetriNetUnfolderBase]: For 123809/123809 co-relation queries the response was YES. [2024-06-21 20:07:57,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9580 conditions, 1903 events. 1065/1903 cut-off events. For 123809/123809 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 11237 event pairs, 215 based on Foata normal form. 2/1904 useless extension candidates. Maximal degree in co-relation 9407. Up to 1746 conditions per place. [2024-06-21 20:07:57,302 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 332 selfloop transitions, 42 changer transitions 0/376 dead transitions. [2024-06-21 20:07:57,302 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 390 places, 376 transitions, 4036 flow [2024-06-21 20:07:57,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:07:57,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:07:57,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 114 transitions. [2024-06-21 20:07:57,303 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32386363636363635 [2024-06-21 20:07:57,303 INFO L175 Difference]: Start difference. First operand has 380 places, 356 transitions, 3214 flow. Second operand 11 states and 114 transitions. [2024-06-21 20:07:57,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 390 places, 376 transitions, 4036 flow [2024-06-21 20:07:57,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 381 places, 376 transitions, 3918 flow, removed 11 selfloop flow, removed 9 redundant places. [2024-06-21 20:07:57,838 INFO L231 Difference]: Finished difference. Result has 382 places, 357 transitions, 3212 flow [2024-06-21 20:07:57,838 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3096, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=356, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=314, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3212, PETRI_PLACES=382, PETRI_TRANSITIONS=357} [2024-06-21 20:07:57,838 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 351 predicate places. [2024-06-21 20:07:57,838 INFO L495 AbstractCegarLoop]: Abstraction has has 382 places, 357 transitions, 3212 flow [2024-06-21 20:07:57,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 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) [2024-06-21 20:07:57,838 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:07:57,838 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:07:57,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2024-06-21 20:07:57,839 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)] === [2024-06-21 20:07:57,839 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:07:57,839 INFO L85 PathProgramCache]: Analyzing trace with hash -2022109924, now seen corresponding path program 4 times [2024-06-21 20:07:57,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:07:57,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707197434] [2024-06-21 20:07:57,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:07:57,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:07:57,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:07:59,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:07:59,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:07:59,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707197434] [2024-06-21 20:07:59,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707197434] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:07:59,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:07:59,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-21 20:07:59,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343038698] [2024-06-21 20:07:59,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:07:59,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-21 20:07:59,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:07:59,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-21 20:07:59,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-21 20:07:59,302 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:07:59,302 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 382 places, 357 transitions, 3212 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 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) [2024-06-21 20:07:59,303 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:07:59,303 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:07:59,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:08:00,065 INFO L124 PetriNetUnfolderBase]: 1069/1911 cut-off events. [2024-06-21 20:08:00,065 INFO L125 PetriNetUnfolderBase]: For 125850/125850 co-relation queries the response was YES. [2024-06-21 20:08:00,084 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9616 conditions, 1911 events. 1069/1911 cut-off events. For 125850/125850 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 11316 event pairs, 214 based on Foata normal form. 2/1912 useless extension candidates. Maximal degree in co-relation 9442. Up to 1754 conditions per place. [2024-06-21 20:08:00,088 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 338 selfloop transitions, 37 changer transitions 0/377 dead transitions. [2024-06-21 20:08:00,088 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 392 places, 377 transitions, 4036 flow [2024-06-21 20:08:00,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:08:00,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:08:00,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 113 transitions. [2024-06-21 20:08:00,089 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3210227272727273 [2024-06-21 20:08:00,089 INFO L175 Difference]: Start difference. First operand has 382 places, 357 transitions, 3212 flow. Second operand 11 states and 113 transitions. [2024-06-21 20:08:00,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 392 places, 377 transitions, 4036 flow [2024-06-21 20:08:00,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 383 places, 377 transitions, 3930 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-21 20:08:00,633 INFO L231 Difference]: Finished difference. Result has 384 places, 358 transitions, 3214 flow [2024-06-21 20:08:00,633 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3106, PETRI_DIFFERENCE_MINUEND_PLACES=373, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=357, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=320, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3214, PETRI_PLACES=384, PETRI_TRANSITIONS=358} [2024-06-21 20:08:00,633 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 353 predicate places. [2024-06-21 20:08:00,633 INFO L495 AbstractCegarLoop]: Abstraction has has 384 places, 358 transitions, 3214 flow [2024-06-21 20:08:00,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 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) [2024-06-21 20:08:00,634 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:08:00,634 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:08:00,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2024-06-21 20:08:00,634 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)] === [2024-06-21 20:08:00,634 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:08:00,634 INFO L85 PathProgramCache]: Analyzing trace with hash 388039584, now seen corresponding path program 5 times [2024-06-21 20:08:00,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:08:00,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784678104] [2024-06-21 20:08:00,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:08:00,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:08:00,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:08:02,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:08:02,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:08:02,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784678104] [2024-06-21 20:08:02,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784678104] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:08:02,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:08:02,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-21 20:08:02,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131354516] [2024-06-21 20:08:02,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:08:02,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-21 20:08:02,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:08:02,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-21 20:08:02,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-21 20:08:02,356 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:08:02,356 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 384 places, 358 transitions, 3214 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 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) [2024-06-21 20:08:02,356 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:08:02,356 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:08:02,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:08:03,068 INFO L124 PetriNetUnfolderBase]: 1073/1919 cut-off events. [2024-06-21 20:08:03,068 INFO L125 PetriNetUnfolderBase]: For 126347/126347 co-relation queries the response was YES. [2024-06-21 20:08:03,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9660 conditions, 1919 events. 1073/1919 cut-off events. For 126347/126347 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 11340 event pairs, 181 based on Foata normal form. 2/1920 useless extension candidates. Maximal degree in co-relation 9485. Up to 1657 conditions per place. [2024-06-21 20:08:03,092 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 330 selfloop transitions, 48 changer transitions 0/380 dead transitions. [2024-06-21 20:08:03,092 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 395 places, 380 transitions, 4050 flow [2024-06-21 20:08:03,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 20:08:03,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 20:08:03,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 121 transitions. [2024-06-21 20:08:03,093 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3151041666666667 [2024-06-21 20:08:03,093 INFO L175 Difference]: Start difference. First operand has 384 places, 358 transitions, 3214 flow. Second operand 12 states and 121 transitions. [2024-06-21 20:08:03,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 395 places, 380 transitions, 4050 flow [2024-06-21 20:08:03,711 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 386 places, 380 transitions, 3952 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-21 20:08:03,715 INFO L231 Difference]: Finished difference. Result has 387 places, 359 transitions, 3248 flow [2024-06-21 20:08:03,715 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3116, PETRI_DIFFERENCE_MINUEND_PLACES=375, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=358, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=310, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3248, PETRI_PLACES=387, PETRI_TRANSITIONS=359} [2024-06-21 20:08:03,715 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 356 predicate places. [2024-06-21 20:08:03,715 INFO L495 AbstractCegarLoop]: Abstraction has has 387 places, 359 transitions, 3248 flow [2024-06-21 20:08:03,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 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) [2024-06-21 20:08:03,716 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:08:03,716 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:08:03,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2024-06-21 20:08:03,716 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)] === [2024-06-21 20:08:03,716 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:08:03,716 INFO L85 PathProgramCache]: Analyzing trace with hash 2047694081, now seen corresponding path program 1 times [2024-06-21 20:08:03,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:08:03,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737463362] [2024-06-21 20:08:03,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:08:03,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:08:03,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:08:05,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:08:05,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:08:05,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737463362] [2024-06-21 20:08:05,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737463362] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:08:05,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:08:05,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-21 20:08:05,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965597533] [2024-06-21 20:08:05,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:08:05,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-21 20:08:05,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:08:05,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-21 20:08:05,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-06-21 20:08:05,544 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:08:05,544 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 387 places, 359 transitions, 3248 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 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) [2024-06-21 20:08:05,544 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:08:05,544 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:08:05,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:08:06,192 INFO L124 PetriNetUnfolderBase]: 1071/1916 cut-off events. [2024-06-21 20:08:06,192 INFO L125 PetriNetUnfolderBase]: For 112808/112808 co-relation queries the response was YES. [2024-06-21 20:08:06,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9521 conditions, 1916 events. 1071/1916 cut-off events. For 112808/112808 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 11362 event pairs, 221 based on Foata normal form. 1/1916 useless extension candidates. Maximal degree in co-relation 9345. Up to 1726 conditions per place. [2024-06-21 20:08:06,216 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 317 selfloop transitions, 59 changer transitions 0/378 dead transitions. [2024-06-21 20:08:06,216 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 397 places, 378 transitions, 4054 flow [2024-06-21 20:08:06,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:08:06,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:08:06,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 117 transitions. [2024-06-21 20:08:06,217 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33238636363636365 [2024-06-21 20:08:06,217 INFO L175 Difference]: Start difference. First operand has 387 places, 359 transitions, 3248 flow. Second operand 11 states and 117 transitions. [2024-06-21 20:08:06,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 397 places, 378 transitions, 4054 flow [2024-06-21 20:08:06,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 387 places, 378 transitions, 3914 flow, removed 23 selfloop flow, removed 10 redundant places. [2024-06-21 20:08:06,824 INFO L231 Difference]: Finished difference. Result has 388 places, 359 transitions, 3236 flow [2024-06-21 20:08:06,824 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3108, PETRI_DIFFERENCE_MINUEND_PLACES=377, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=359, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=300, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3236, PETRI_PLACES=388, PETRI_TRANSITIONS=359} [2024-06-21 20:08:06,825 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 357 predicate places. [2024-06-21 20:08:06,825 INFO L495 AbstractCegarLoop]: Abstraction has has 388 places, 359 transitions, 3236 flow [2024-06-21 20:08:06,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 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) [2024-06-21 20:08:06,825 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:08:06,825 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:08:06,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2024-06-21 20:08:06,826 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)] === [2024-06-21 20:08:06,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:08:06,826 INFO L85 PathProgramCache]: Analyzing trace with hash -251786050, now seen corresponding path program 1 times [2024-06-21 20:08:06,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:08:06,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015589399] [2024-06-21 20:08:06,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:08:06,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:08:06,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:08:08,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:08:08,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:08:08,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015589399] [2024-06-21 20:08:08,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015589399] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:08:08,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:08:08,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-21 20:08:08,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255596957] [2024-06-21 20:08:08,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:08:08,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-21 20:08:08,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:08:08,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-21 20:08:08,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-21 20:08:09,001 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:08:09,001 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 388 places, 359 transitions, 3236 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 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) [2024-06-21 20:08:09,001 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:08:09,001 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:08:09,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:08:09,802 INFO L124 PetriNetUnfolderBase]: 1091/1960 cut-off events. [2024-06-21 20:08:09,803 INFO L125 PetriNetUnfolderBase]: For 191821/191821 co-relation queries the response was YES. [2024-06-21 20:08:09,822 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9620 conditions, 1960 events. 1091/1960 cut-off events. For 191821/191821 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 11661 event pairs, 225 based on Foata normal form. 10/1969 useless extension candidates. Maximal degree in co-relation 9443. Up to 1754 conditions per place. [2024-06-21 20:08:09,827 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 336 selfloop transitions, 37 changer transitions 8/383 dead transitions. [2024-06-21 20:08:09,827 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 398 places, 383 transitions, 4088 flow [2024-06-21 20:08:09,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:08:09,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:08:09,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-21 20:08:09,828 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-21 20:08:09,828 INFO L175 Difference]: Start difference. First operand has 388 places, 359 transitions, 3236 flow. Second operand 11 states and 121 transitions. [2024-06-21 20:08:09,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 398 places, 383 transitions, 4088 flow [2024-06-21 20:08:10,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 387 places, 383 transitions, 3874 flow, removed 11 selfloop flow, removed 11 redundant places. [2024-06-21 20:08:10,430 INFO L231 Difference]: Finished difference. Result has 388 places, 356 transitions, 3073 flow [2024-06-21 20:08:10,431 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3022, PETRI_DIFFERENCE_MINUEND_PLACES=377, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=359, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=322, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3073, PETRI_PLACES=388, PETRI_TRANSITIONS=356} [2024-06-21 20:08:10,431 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 357 predicate places. [2024-06-21 20:08:10,431 INFO L495 AbstractCegarLoop]: Abstraction has has 388 places, 356 transitions, 3073 flow [2024-06-21 20:08:10,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 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) [2024-06-21 20:08:10,431 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:08:10,431 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:08:10,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2024-06-21 20:08:10,431 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)] === [2024-06-21 20:08:10,431 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:08:10,432 INFO L85 PathProgramCache]: Analyzing trace with hash -978294146, now seen corresponding path program 6 times [2024-06-21 20:08:10,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:08:10,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435340132] [2024-06-21 20:08:10,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:08:10,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:08:10,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:08:11,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:08:11,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:08:11,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435340132] [2024-06-21 20:08:11,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435340132] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:08:11,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:08:11,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-21 20:08:11,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853742429] [2024-06-21 20:08:11,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:08:11,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-21 20:08:11,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:08:11,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-21 20:08:11,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-06-21 20:08:12,103 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:08:12,103 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 388 places, 356 transitions, 3073 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 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) [2024-06-21 20:08:12,103 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:08:12,104 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:08:12,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:08:12,808 INFO L124 PetriNetUnfolderBase]: 1065/1914 cut-off events. [2024-06-21 20:08:12,808 INFO L125 PetriNetUnfolderBase]: For 126564/126564 co-relation queries the response was YES. [2024-06-21 20:08:12,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9328 conditions, 1914 events. 1065/1914 cut-off events. For 126564/126564 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 11401 event pairs, 168 based on Foata normal form. 2/1915 useless extension candidates. Maximal degree in co-relation 9151. Up to 1484 conditions per place. [2024-06-21 20:08:12,832 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 261 selfloop transitions, 116 changer transitions 0/379 dead transitions. [2024-06-21 20:08:12,833 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 398 places, 379 transitions, 3931 flow [2024-06-21 20:08:12,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:08:12,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:08:12,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-06-21 20:08:12,837 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35511363636363635 [2024-06-21 20:08:12,837 INFO L175 Difference]: Start difference. First operand has 388 places, 356 transitions, 3073 flow. Second operand 11 states and 125 transitions. [2024-06-21 20:08:12,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 398 places, 379 transitions, 3931 flow [2024-06-21 20:08:13,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 388 places, 379 transitions, 3850 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-21 20:08:13,366 INFO L231 Difference]: Finished difference. Result has 389 places, 357 transitions, 3263 flow [2024-06-21 20:08:13,366 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2992, PETRI_DIFFERENCE_MINUEND_PLACES=378, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=356, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3263, PETRI_PLACES=389, PETRI_TRANSITIONS=357} [2024-06-21 20:08:13,366 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 358 predicate places. [2024-06-21 20:08:13,366 INFO L495 AbstractCegarLoop]: Abstraction has has 389 places, 357 transitions, 3263 flow [2024-06-21 20:08:13,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 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) [2024-06-21 20:08:13,366 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:08:13,366 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:08:13,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2024-06-21 20:08:13,367 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)] === [2024-06-21 20:08:13,367 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:08:13,367 INFO L85 PathProgramCache]: Analyzing trace with hash -442796938, now seen corresponding path program 2 times [2024-06-21 20:08:13,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:08:13,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688566199] [2024-06-21 20:08:13,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:08:13,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:08:13,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:08:15,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:08:15,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:08:15,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688566199] [2024-06-21 20:08:15,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688566199] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:08:15,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:08:15,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-21 20:08:15,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169049287] [2024-06-21 20:08:15,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:08:15,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-21 20:08:15,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:08:15,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-21 20:08:15,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-06-21 20:08:15,899 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:08:15,900 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 389 places, 357 transitions, 3263 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 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) [2024-06-21 20:08:15,900 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:08:15,900 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:08:15,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:08:16,900 INFO L124 PetriNetUnfolderBase]: 1081/1950 cut-off events. [2024-06-21 20:08:16,900 INFO L125 PetriNetUnfolderBase]: For 196013/196013 co-relation queries the response was YES. [2024-06-21 20:08:16,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9661 conditions, 1950 events. 1081/1950 cut-off events. For 196013/196013 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 11645 event pairs, 174 based on Foata normal form. 10/1959 useless extension candidates. Maximal degree in co-relation 9483. Up to 1394 conditions per place. [2024-06-21 20:08:16,924 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 248 selfloop transitions, 124 changer transitions 14/388 dead transitions. [2024-06-21 20:08:16,925 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 401 places, 388 transitions, 4159 flow [2024-06-21 20:08:16,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-21 20:08:16,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-21 20:08:16,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 149 transitions. [2024-06-21 20:08:16,925 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3581730769230769 [2024-06-21 20:08:16,926 INFO L175 Difference]: Start difference. First operand has 389 places, 357 transitions, 3263 flow. Second operand 13 states and 149 transitions. [2024-06-21 20:08:16,926 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 401 places, 388 transitions, 4159 flow [2024-06-21 20:08:17,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 391 places, 388 transitions, 3894 flow, removed 16 selfloop flow, removed 10 redundant places. [2024-06-21 20:08:17,516 INFO L231 Difference]: Finished difference. Result has 392 places, 349 transitions, 3197 flow [2024-06-21 20:08:17,516 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2998, PETRI_DIFFERENCE_MINUEND_PLACES=379, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=357, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3197, PETRI_PLACES=392, PETRI_TRANSITIONS=349} [2024-06-21 20:08:17,516 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 361 predicate places. [2024-06-21 20:08:17,516 INFO L495 AbstractCegarLoop]: Abstraction has has 392 places, 349 transitions, 3197 flow [2024-06-21 20:08:17,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 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) [2024-06-21 20:08:17,517 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:08:17,517 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:08:17,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2024-06-21 20:08:17,517 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)] === [2024-06-21 20:08:17,517 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:08:17,517 INFO L85 PathProgramCache]: Analyzing trace with hash -526739476, now seen corresponding path program 3 times [2024-06-21 20:08:17,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:08:17,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949382397] [2024-06-21 20:08:17,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:08:17,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:08:17,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:08:20,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:08:20,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:08:20,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949382397] [2024-06-21 20:08:20,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949382397] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:08:20,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:08:20,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-21 20:08:20,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4829469] [2024-06-21 20:08:20,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:08:20,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-21 20:08:20,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:08:20,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-21 20:08:20,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-06-21 20:08:20,117 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:08:20,117 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 392 places, 349 transitions, 3197 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 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) [2024-06-21 20:08:20,117 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:08:20,117 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:08:20,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:08:20,982 INFO L124 PetriNetUnfolderBase]: 1089/1982 cut-off events. [2024-06-21 20:08:20,982 INFO L125 PetriNetUnfolderBase]: For 284322/284322 co-relation queries the response was YES. [2024-06-21 20:08:21,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11385 conditions, 1982 events. 1089/1982 cut-off events. For 284322/284322 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 11841 event pairs, 188 based on Foata normal form. 8/1989 useless extension candidates. Maximal degree in co-relation 11207. Up to 1302 conditions per place. [2024-06-21 20:08:21,008 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 254 selfloop transitions, 113 changer transitions 15/384 dead transitions. [2024-06-21 20:08:21,008 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 401 places, 384 transitions, 4413 flow [2024-06-21 20:08:21,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 20:08:21,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 20:08:21,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 143 transitions. [2024-06-21 20:08:21,009 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3723958333333333 [2024-06-21 20:08:21,009 INFO L175 Difference]: Start difference. First operand has 392 places, 349 transitions, 3197 flow. Second operand 12 states and 143 transitions. [2024-06-21 20:08:21,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 401 places, 384 transitions, 4413 flow [2024-06-21 20:08:21,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 386 places, 384 transitions, 4088 flow, removed 4 selfloop flow, removed 15 redundant places. [2024-06-21 20:08:21,850 INFO L231 Difference]: Finished difference. Result has 387 places, 341 transitions, 3032 flow [2024-06-21 20:08:21,850 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2876, PETRI_DIFFERENCE_MINUEND_PLACES=375, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=349, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3032, PETRI_PLACES=387, PETRI_TRANSITIONS=341} [2024-06-21 20:08:21,850 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 356 predicate places. [2024-06-21 20:08:21,850 INFO L495 AbstractCegarLoop]: Abstraction has has 387 places, 341 transitions, 3032 flow [2024-06-21 20:08:21,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 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) [2024-06-21 20:08:21,851 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:08:21,851 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:08:21,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2024-06-21 20:08:21,851 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)] === [2024-06-21 20:08:21,851 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:08:21,851 INFO L85 PathProgramCache]: Analyzing trace with hash -985645796, now seen corresponding path program 7 times [2024-06-21 20:08:21,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:08:21,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899268181] [2024-06-21 20:08:21,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:08:21,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:08:21,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:08:23,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:08:23,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:08:23,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899268181] [2024-06-21 20:08:23,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899268181] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:08:23,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:08:23,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-21 20:08:23,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790023908] [2024-06-21 20:08:23,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:08:23,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-21 20:08:23,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:08:23,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-21 20:08:23,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-06-21 20:08:23,514 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:08:23,515 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 387 places, 341 transitions, 3032 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 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) [2024-06-21 20:08:23,515 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:08:23,515 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:08:23,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:08:24,241 INFO L124 PetriNetUnfolderBase]: 1052/1915 cut-off events. [2024-06-21 20:08:24,241 INFO L125 PetriNetUnfolderBase]: For 230128/230128 co-relation queries the response was YES. [2024-06-21 20:08:24,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10964 conditions, 1915 events. 1052/1915 cut-off events. For 230128/230128 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 11412 event pairs, 188 based on Foata normal form. 2/1916 useless extension candidates. Maximal degree in co-relation 10802. Up to 1577 conditions per place. [2024-06-21 20:08:24,266 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 269 selfloop transitions, 92 changer transitions 0/363 dead transitions. [2024-06-21 20:08:24,266 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 392 places, 363 transitions, 3854 flow [2024-06-21 20:08:24,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:08:24,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:08:24,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-21 20:08:24,267 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3494318181818182 [2024-06-21 20:08:24,267 INFO L175 Difference]: Start difference. First operand has 387 places, 341 transitions, 3032 flow. Second operand 11 states and 123 transitions. [2024-06-21 20:08:24,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 392 places, 363 transitions, 3854 flow [2024-06-21 20:08:24,948 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 380 places, 363 transitions, 3642 flow, removed 3 selfloop flow, removed 12 redundant places. [2024-06-21 20:08:24,952 INFO L231 Difference]: Finished difference. Result has 381 places, 342 transitions, 3045 flow [2024-06-21 20:08:24,952 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2820, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=341, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3045, PETRI_PLACES=381, PETRI_TRANSITIONS=342} [2024-06-21 20:08:24,952 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 350 predicate places. [2024-06-21 20:08:24,952 INFO L495 AbstractCegarLoop]: Abstraction has has 381 places, 342 transitions, 3045 flow [2024-06-21 20:08:24,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 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) [2024-06-21 20:08:24,953 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:08:24,953 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:08:24,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2024-06-21 20:08:24,953 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)] === [2024-06-21 20:08:24,953 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:08:24,954 INFO L85 PathProgramCache]: Analyzing trace with hash -450421574, now seen corresponding path program 8 times [2024-06-21 20:08:24,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:08:24,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534670766] [2024-06-21 20:08:24,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:08:24,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:08:24,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:08:26,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:08:26,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:08:26,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534670766] [2024-06-21 20:08:26,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534670766] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:08:26,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:08:26,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-21 20:08:26,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918139319] [2024-06-21 20:08:26,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:08:26,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-21 20:08:26,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:08:26,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-21 20:08:26,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-06-21 20:08:26,722 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:08:26,722 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 381 places, 342 transitions, 3045 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 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) [2024-06-21 20:08:26,722 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:08:26,722 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:08:26,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:08:27,438 INFO L124 PetriNetUnfolderBase]: 1056/1923 cut-off events. [2024-06-21 20:08:27,438 INFO L125 PetriNetUnfolderBase]: For 223968/223968 co-relation queries the response was YES. [2024-06-21 20:08:27,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11010 conditions, 1923 events. 1056/1923 cut-off events. For 223968/223968 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 11456 event pairs, 190 based on Foata normal form. 2/1924 useless extension candidates. Maximal degree in co-relation 10850. Up to 1593 conditions per place. [2024-06-21 20:08:27,461 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 273 selfloop transitions, 89 changer transitions 0/364 dead transitions. [2024-06-21 20:08:27,462 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 391 places, 364 transitions, 3869 flow [2024-06-21 20:08:27,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:08:27,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:08:27,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-21 20:08:27,462 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3465909090909091 [2024-06-21 20:08:27,463 INFO L175 Difference]: Start difference. First operand has 381 places, 342 transitions, 3045 flow. Second operand 11 states and 122 transitions. [2024-06-21 20:08:27,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 391 places, 364 transitions, 3869 flow [2024-06-21 20:08:28,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 382 places, 364 transitions, 3656 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-06-21 20:08:28,242 INFO L231 Difference]: Finished difference. Result has 383 places, 343 transitions, 3052 flow [2024-06-21 20:08:28,242 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2832, PETRI_DIFFERENCE_MINUEND_PLACES=372, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=342, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3052, PETRI_PLACES=383, PETRI_TRANSITIONS=343} [2024-06-21 20:08:28,242 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 352 predicate places. [2024-06-21 20:08:28,242 INFO L495 AbstractCegarLoop]: Abstraction has has 383 places, 343 transitions, 3052 flow [2024-06-21 20:08:28,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 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) [2024-06-21 20:08:28,243 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:08:28,243 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:08:28,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2024-06-21 20:08:28,243 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)] === [2024-06-21 20:08:28,243 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:08:28,243 INFO L85 PathProgramCache]: Analyzing trace with hash -1646525818, now seen corresponding path program 9 times [2024-06-21 20:08:28,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:08:28,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887756773] [2024-06-21 20:08:28,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:08:28,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:08:28,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:08:29,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:08:29,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:08:29,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887756773] [2024-06-21 20:08:29,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887756773] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:08:29,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:08:29,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-21 20:08:29,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077377434] [2024-06-21 20:08:29,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:08:29,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-21 20:08:29,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:08:29,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-21 20:08:29,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-06-21 20:08:29,728 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:08:29,728 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 383 places, 343 transitions, 3052 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 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) [2024-06-21 20:08:29,728 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:08:29,728 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:08:29,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:08:30,489 INFO L124 PetriNetUnfolderBase]: 1060/1931 cut-off events. [2024-06-21 20:08:30,489 INFO L125 PetriNetUnfolderBase]: For 227687/227687 co-relation queries the response was YES. [2024-06-21 20:08:30,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11071 conditions, 1931 events. 1060/1931 cut-off events. For 227687/227687 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 11505 event pairs, 214 based on Foata normal form. 2/1932 useless extension candidates. Maximal degree in co-relation 10910. Up to 1731 conditions per place. [2024-06-21 20:08:30,512 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 305 selfloop transitions, 55 changer transitions 0/362 dead transitions. [2024-06-21 20:08:30,512 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 393 places, 362 transitions, 3860 flow [2024-06-21 20:08:30,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:08:30,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:08:30,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 119 transitions. [2024-06-21 20:08:30,513 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3380681818181818 [2024-06-21 20:08:30,513 INFO L175 Difference]: Start difference. First operand has 383 places, 343 transitions, 3052 flow. Second operand 11 states and 119 transitions. [2024-06-21 20:08:30,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 393 places, 362 transitions, 3860 flow [2024-06-21 20:08:31,291 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 384 places, 362 transitions, 3650 flow, removed 17 selfloop flow, removed 9 redundant places. [2024-06-21 20:08:31,294 INFO L231 Difference]: Finished difference. Result has 385 places, 344 transitions, 2997 flow [2024-06-21 20:08:31,295 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2842, PETRI_DIFFERENCE_MINUEND_PLACES=374, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=343, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=288, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2997, PETRI_PLACES=385, PETRI_TRANSITIONS=344} [2024-06-21 20:08:31,295 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 354 predicate places. [2024-06-21 20:08:31,295 INFO L495 AbstractCegarLoop]: Abstraction has has 385 places, 344 transitions, 2997 flow [2024-06-21 20:08:31,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 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) [2024-06-21 20:08:31,295 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:08:31,295 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:08:31,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2024-06-21 20:08:31,296 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)] === [2024-06-21 20:08:31,296 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:08:31,296 INFO L85 PathProgramCache]: Analyzing trace with hash -1730483236, now seen corresponding path program 10 times [2024-06-21 20:08:31,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:08:31,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117293190] [2024-06-21 20:08:31,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:08:31,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:08:31,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:08:33,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:08:33,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:08:33,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117293190] [2024-06-21 20:08:33,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117293190] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:08:33,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:08:33,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-21 20:08:33,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866375216] [2024-06-21 20:08:33,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:08:33,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-21 20:08:33,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:08:33,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-21 20:08:33,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-06-21 20:08:33,281 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:08:33,281 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 385 places, 344 transitions, 2997 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 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) [2024-06-21 20:08:33,281 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:08:33,281 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:08:33,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:08:34,000 INFO L124 PetriNetUnfolderBase]: 1064/1939 cut-off events. [2024-06-21 20:08:34,000 INFO L125 PetriNetUnfolderBase]: For 231184/231184 co-relation queries the response was YES. [2024-06-21 20:08:34,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11044 conditions, 1939 events. 1064/1939 cut-off events. For 231184/231184 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 11590 event pairs, 214 based on Foata normal form. 2/1940 useless extension candidates. Maximal degree in co-relation 10882. Up to 1747 conditions per place. [2024-06-21 20:08:34,024 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 309 selfloop transitions, 52 changer transitions 0/363 dead transitions. [2024-06-21 20:08:34,024 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 395 places, 363 transitions, 3807 flow [2024-06-21 20:08:34,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:08:34,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:08:34,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 118 transitions. [2024-06-21 20:08:34,024 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3352272727272727 [2024-06-21 20:08:34,024 INFO L175 Difference]: Start difference. First operand has 385 places, 344 transitions, 2997 flow. Second operand 11 states and 118 transitions. [2024-06-21 20:08:34,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 395 places, 363 transitions, 3807 flow [2024-06-21 20:08:34,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 386 places, 363 transitions, 3664 flow, removed 18 selfloop flow, removed 9 redundant places. [2024-06-21 20:08:34,788 INFO L231 Difference]: Finished difference. Result has 387 places, 345 transitions, 3004 flow [2024-06-21 20:08:34,788 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2854, PETRI_DIFFERENCE_MINUEND_PLACES=376, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=344, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3004, PETRI_PLACES=387, PETRI_TRANSITIONS=345} [2024-06-21 20:08:34,788 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 356 predicate places. [2024-06-21 20:08:34,788 INFO L495 AbstractCegarLoop]: Abstraction has has 387 places, 345 transitions, 3004 flow [2024-06-21 20:08:34,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 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) [2024-06-21 20:08:34,788 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:08:34,788 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:08:34,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2024-06-21 20:08:34,789 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)] === [2024-06-21 20:08:34,789 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:08:34,789 INFO L85 PathProgramCache]: Analyzing trace with hash -1069387888, now seen corresponding path program 4 times [2024-06-21 20:08:34,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:08:34,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891265449] [2024-06-21 20:08:34,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:08:34,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:08:34,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:08:36,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:08:36,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:08:36,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891265449] [2024-06-21 20:08:36,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891265449] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:08:36,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:08:36,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-21 20:08:36,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421135878] [2024-06-21 20:08:36,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:08:36,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-21 20:08:36,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:08:36,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-21 20:08:36,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-06-21 20:08:36,455 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:08:36,456 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 387 places, 345 transitions, 3004 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 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) [2024-06-21 20:08:36,456 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:08:36,456 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:08:36,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:08:37,312 INFO L124 PetriNetUnfolderBase]: 1080/1975 cut-off events. [2024-06-21 20:08:37,312 INFO L125 PetriNetUnfolderBase]: For 303145/303145 co-relation queries the response was YES. [2024-06-21 20:08:37,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11133 conditions, 1975 events. 1080/1975 cut-off events. For 303145/303145 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 11834 event pairs, 196 based on Foata normal form. 10/1984 useless extension candidates. Maximal degree in co-relation 10970. Up to 1487 conditions per place. [2024-06-21 20:08:37,336 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 258 selfloop transitions, 93 changer transitions 19/372 dead transitions. [2024-06-21 20:08:37,336 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 398 places, 372 transitions, 3850 flow [2024-06-21 20:08:37,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 20:08:37,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 20:08:37,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 137 transitions. [2024-06-21 20:08:37,337 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3567708333333333 [2024-06-21 20:08:37,337 INFO L175 Difference]: Start difference. First operand has 387 places, 345 transitions, 3004 flow. Second operand 12 states and 137 transitions. [2024-06-21 20:08:37,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 398 places, 372 transitions, 3850 flow [2024-06-21 20:08:38,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 389 places, 372 transitions, 3710 flow, removed 19 selfloop flow, removed 9 redundant places. [2024-06-21 20:08:38,121 INFO L231 Difference]: Finished difference. Result has 390 places, 336 transitions, 2990 flow [2024-06-21 20:08:38,121 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2864, PETRI_DIFFERENCE_MINUEND_PLACES=378, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=345, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2990, PETRI_PLACES=390, PETRI_TRANSITIONS=336} [2024-06-21 20:08:38,121 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 359 predicate places. [2024-06-21 20:08:38,121 INFO L495 AbstractCegarLoop]: Abstraction has has 390 places, 336 transitions, 2990 flow [2024-06-21 20:08:38,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 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) [2024-06-21 20:08:38,121 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:08:38,122 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:08:38,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2024-06-21 20:08:38,122 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)] === [2024-06-21 20:08:38,122 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:08:38,122 INFO L85 PathProgramCache]: Analyzing trace with hash 2113061946, now seen corresponding path program 11 times [2024-06-21 20:08:38,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:08:38,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271913787] [2024-06-21 20:08:38,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:08:38,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:08:38,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:08:39,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:08:39,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:08:39,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271913787] [2024-06-21 20:08:39,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271913787] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:08:39,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:08:39,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-21 20:08:39,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565629327] [2024-06-21 20:08:39,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:08:39,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-21 20:08:39,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:08:39,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-21 20:08:39,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-06-21 20:08:39,540 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:08:39,540 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 390 places, 336 transitions, 2990 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 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) [2024-06-21 20:08:39,540 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:08:39,540 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:08:39,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:08:40,306 INFO L124 PetriNetUnfolderBase]: 1038/1901 cut-off events. [2024-06-21 20:08:40,306 INFO L125 PetriNetUnfolderBase]: For 237896/237896 co-relation queries the response was YES. [2024-06-21 20:08:40,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10978 conditions, 1901 events. 1038/1901 cut-off events. For 237896/237896 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 11366 event pairs, 206 based on Foata normal form. 2/1902 useless extension candidates. Maximal degree in co-relation 10814. Up to 1717 conditions per place. [2024-06-21 20:08:40,330 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 304 selfloop transitions, 49 changer transitions 0/355 dead transitions. [2024-06-21 20:08:40,330 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 394 places, 355 transitions, 3784 flow [2024-06-21 20:08:40,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:08:40,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:08:40,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 117 transitions. [2024-06-21 20:08:40,331 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33238636363636365 [2024-06-21 20:08:40,331 INFO L175 Difference]: Start difference. First operand has 390 places, 336 transitions, 2990 flow. Second operand 11 states and 117 transitions. [2024-06-21 20:08:40,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 394 places, 355 transitions, 3784 flow [2024-06-21 20:08:41,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 382 places, 355 transitions, 3586 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-06-21 20:08:41,067 INFO L231 Difference]: Finished difference. Result has 383 places, 337 transitions, 2938 flow [2024-06-21 20:08:41,067 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2794, PETRI_DIFFERENCE_MINUEND_PLACES=372, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=336, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2938, PETRI_PLACES=383, PETRI_TRANSITIONS=337} [2024-06-21 20:08:41,068 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 352 predicate places. [2024-06-21 20:08:41,068 INFO L495 AbstractCegarLoop]: Abstraction has has 383 places, 337 transitions, 2938 flow [2024-06-21 20:08:41,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 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) [2024-06-21 20:08:41,068 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:08:41,068 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:08:41,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2024-06-21 20:08:41,068 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)] === [2024-06-21 20:08:41,068 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:08:41,068 INFO L85 PathProgramCache]: Analyzing trace with hash -649717784, now seen corresponding path program 12 times [2024-06-21 20:08:41,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:08:41,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960099562] [2024-06-21 20:08:41,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:08:41,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:08:41,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:08:42,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:08:42,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:08:42,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960099562] [2024-06-21 20:08:42,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960099562] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:08:42,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:08:42,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-21 20:08:42,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011373258] [2024-06-21 20:08:42,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:08:42,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-21 20:08:42,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:08:42,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-21 20:08:42,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-06-21 20:08:42,777 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:08:42,777 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 383 places, 337 transitions, 2938 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 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) [2024-06-21 20:08:42,777 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:08:42,777 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:08:42,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:08:43,464 INFO L124 PetriNetUnfolderBase]: 1035/1896 cut-off events. [2024-06-21 20:08:43,464 INFO L125 PetriNetUnfolderBase]: For 210212/210212 co-relation queries the response was YES. [2024-06-21 20:08:43,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10487 conditions, 1896 events. 1035/1896 cut-off events. For 210212/210212 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 11334 event pairs, 193 based on Foata normal form. 2/1897 useless extension candidates. Maximal degree in co-relation 10326. Up to 1634 conditions per place. [2024-06-21 20:08:43,488 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 282 selfloop transitions, 74 changer transitions 0/358 dead transitions. [2024-06-21 20:08:43,488 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 393 places, 358 transitions, 3752 flow [2024-06-21 20:08:43,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:08:43,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:08:43,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-21 20:08:43,489 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-21 20:08:43,489 INFO L175 Difference]: Start difference. First operand has 383 places, 337 transitions, 2938 flow. Second operand 11 states and 121 transitions. [2024-06-21 20:08:43,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 393 places, 358 transitions, 3752 flow [2024-06-21 20:08:44,154 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 384 places, 358 transitions, 3618 flow, removed 19 selfloop flow, removed 9 redundant places. [2024-06-21 20:08:44,157 INFO L231 Difference]: Finished difference. Result has 385 places, 338 transitions, 3001 flow [2024-06-21 20:08:44,157 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2804, PETRI_DIFFERENCE_MINUEND_PLACES=374, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=337, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3001, PETRI_PLACES=385, PETRI_TRANSITIONS=338} [2024-06-21 20:08:44,157 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 354 predicate places. [2024-06-21 20:08:44,157 INFO L495 AbstractCegarLoop]: Abstraction has has 385 places, 338 transitions, 3001 flow [2024-06-21 20:08:44,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 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) [2024-06-21 20:08:44,158 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:08:44,158 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:08:44,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2024-06-21 20:08:44,158 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)] === [2024-06-21 20:08:44,158 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:08:44,158 INFO L85 PathProgramCache]: Analyzing trace with hash -1268905004, now seen corresponding path program 13 times [2024-06-21 20:08:44,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:08:44,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143181016] [2024-06-21 20:08:44,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:08:44,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:08:44,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:08:45,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:08:45,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:08:45,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143181016] [2024-06-21 20:08:45,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143181016] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:08:45,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:08:45,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-21 20:08:45,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071448254] [2024-06-21 20:08:45,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:08:45,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-21 20:08:45,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:08:45,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-21 20:08:45,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-06-21 20:08:45,773 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:08:45,774 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 385 places, 338 transitions, 3001 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 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) [2024-06-21 20:08:45,774 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:08:45,774 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:08:45,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:08:46,516 INFO L124 PetriNetUnfolderBase]: 1039/1904 cut-off events. [2024-06-21 20:08:46,517 INFO L125 PetriNetUnfolderBase]: For 213570/213570 co-relation queries the response was YES. [2024-06-21 20:08:46,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10612 conditions, 1904 events. 1039/1904 cut-off events. For 213570/213570 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 11409 event pairs, 193 based on Foata normal form. 2/1905 useless extension candidates. Maximal degree in co-relation 10450. Up to 1626 conditions per place. [2024-06-21 20:08:46,539 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 283 selfloop transitions, 74 changer transitions 0/359 dead transitions. [2024-06-21 20:08:46,540 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 395 places, 359 transitions, 3817 flow [2024-06-21 20:08:46,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:08:46,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:08:46,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-21 20:08:46,540 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3465909090909091 [2024-06-21 20:08:46,541 INFO L175 Difference]: Start difference. First operand has 385 places, 338 transitions, 3001 flow. Second operand 11 states and 122 transitions. [2024-06-21 20:08:46,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 395 places, 359 transitions, 3817 flow [2024-06-21 20:08:47,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 386 places, 359 transitions, 3632 flow, removed 20 selfloop flow, removed 9 redundant places. [2024-06-21 20:08:47,322 INFO L231 Difference]: Finished difference. Result has 387 places, 339 transitions, 3014 flow [2024-06-21 20:08:47,322 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2816, PETRI_DIFFERENCE_MINUEND_PLACES=376, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=338, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3014, PETRI_PLACES=387, PETRI_TRANSITIONS=339} [2024-06-21 20:08:47,322 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 356 predicate places. [2024-06-21 20:08:47,322 INFO L495 AbstractCegarLoop]: Abstraction has has 387 places, 339 transitions, 3014 flow [2024-06-21 20:08:47,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 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) [2024-06-21 20:08:47,323 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:08:47,323 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:08:47,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2024-06-21 20:08:47,323 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)] === [2024-06-21 20:08:47,323 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:08:47,323 INFO L85 PathProgramCache]: Analyzing trace with hash 305541678, now seen corresponding path program 5 times [2024-06-21 20:08:47,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:08:47,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707270549] [2024-06-21 20:08:47,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:08:47,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:08:47,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:08:49,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:08:49,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:08:49,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707270549] [2024-06-21 20:08:49,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707270549] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:08:49,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:08:49,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-21 20:08:49,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196613396] [2024-06-21 20:08:49,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:08:49,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-21 20:08:49,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:08:49,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-21 20:08:49,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-21 20:08:49,474 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:08:49,474 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 387 places, 339 transitions, 3014 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 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) [2024-06-21 20:08:49,474 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:08:49,474 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:08:49,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:08:50,380 INFO L124 PetriNetUnfolderBase]: 1061/1950 cut-off events. [2024-06-21 20:08:50,380 INFO L125 PetriNetUnfolderBase]: For 285264/285264 co-relation queries the response was YES. [2024-06-21 20:08:50,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10733 conditions, 1950 events. 1061/1950 cut-off events. For 285264/285264 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 11745 event pairs, 215 based on Foata normal form. 10/1959 useless extension candidates. Maximal degree in co-relation 10570. Up to 1704 conditions per place. [2024-06-21 20:08:50,403 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 306 selfloop transitions, 54 changer transitions 11/373 dead transitions. [2024-06-21 20:08:50,403 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 399 places, 373 transitions, 3905 flow [2024-06-21 20:08:50,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-21 20:08:50,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-21 20:08:50,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 145 transitions. [2024-06-21 20:08:50,404 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3485576923076923 [2024-06-21 20:08:50,404 INFO L175 Difference]: Start difference. First operand has 387 places, 339 transitions, 3014 flow. Second operand 13 states and 145 transitions. [2024-06-21 20:08:50,404 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 399 places, 373 transitions, 3905 flow [2024-06-21 20:08:51,016 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 390 places, 373 transitions, 3717 flow, removed 21 selfloop flow, removed 9 redundant places. [2024-06-21 20:08:51,019 INFO L231 Difference]: Finished difference. Result has 392 places, 338 transitions, 2933 flow [2024-06-21 20:08:51,019 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2826, PETRI_DIFFERENCE_MINUEND_PLACES=378, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=339, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=285, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2933, PETRI_PLACES=392, PETRI_TRANSITIONS=338} [2024-06-21 20:08:51,019 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 361 predicate places. [2024-06-21 20:08:51,019 INFO L495 AbstractCegarLoop]: Abstraction has has 392 places, 338 transitions, 2933 flow [2024-06-21 20:08:51,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 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) [2024-06-21 20:08:51,019 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:08:51,020 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:08:51,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2024-06-21 20:08:51,020 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)] === [2024-06-21 20:08:51,020 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:08:51,020 INFO L85 PathProgramCache]: Analyzing trace with hash -552738206, now seen corresponding path program 6 times [2024-06-21 20:08:51,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:08:51,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854944786] [2024-06-21 20:08:51,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:08:51,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:08:51,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:08:52,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:08:52,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:08:52,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854944786] [2024-06-21 20:08:52,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854944786] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:08:52,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:08:52,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-21 20:08:52,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987231825] [2024-06-21 20:08:52,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:08:52,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-21 20:08:52,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:08:52,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-21 20:08:52,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-06-21 20:08:52,983 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:08:52,983 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 392 places, 338 transitions, 2933 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 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) [2024-06-21 20:08:52,983 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:08:52,984 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:08:52,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:08:53,652 INFO L124 PetriNetUnfolderBase]: 1051/1936 cut-off events. [2024-06-21 20:08:53,652 INFO L125 PetriNetUnfolderBase]: For 288358/288358 co-relation queries the response was YES. [2024-06-21 20:08:53,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10566 conditions, 1936 events. 1051/1936 cut-off events. For 288358/288358 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 11651 event pairs, 217 based on Foata normal form. 10/1945 useless extension candidates. Maximal degree in co-relation 10401. Up to 1678 conditions per place. [2024-06-21 20:08:53,675 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 293 selfloop transitions, 48 changer transitions 19/362 dead transitions. [2024-06-21 20:08:53,676 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 401 places, 362 transitions, 3743 flow [2024-06-21 20:08:53,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 20:08:53,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 20:08:53,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 132 transitions. [2024-06-21 20:08:53,676 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-21 20:08:53,677 INFO L175 Difference]: Start difference. First operand has 392 places, 338 transitions, 2933 flow. Second operand 12 states and 132 transitions. [2024-06-21 20:08:53,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 401 places, 362 transitions, 3743 flow [2024-06-21 20:08:54,418 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 391 places, 362 transitions, 3634 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-21 20:08:54,421 INFO L231 Difference]: Finished difference. Result has 392 places, 329 transitions, 2860 flow [2024-06-21 20:08:54,422 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2824, PETRI_DIFFERENCE_MINUEND_PLACES=380, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=338, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=290, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2860, PETRI_PLACES=392, PETRI_TRANSITIONS=329} [2024-06-21 20:08:54,422 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 361 predicate places. [2024-06-21 20:08:54,422 INFO L495 AbstractCegarLoop]: Abstraction has has 392 places, 329 transitions, 2860 flow [2024-06-21 20:08:54,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 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) [2024-06-21 20:08:54,422 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:08:54,422 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:08:54,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2024-06-21 20:08:54,422 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)] === [2024-06-21 20:08:54,422 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:08:54,423 INFO L85 PathProgramCache]: Analyzing trace with hash 2109487026, now seen corresponding path program 14 times [2024-06-21 20:08:54,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:08:54,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341746811] [2024-06-21 20:08:54,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:08:54,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:08:54,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:08:55,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:08:55,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:08:55,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341746811] [2024-06-21 20:08:55,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341746811] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:08:55,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:08:55,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-21 20:08:55,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213078440] [2024-06-21 20:08:55,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:08:55,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-21 20:08:55,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:08:55,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-21 20:08:55,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-06-21 20:08:55,870 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:08:55,871 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 392 places, 329 transitions, 2860 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 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) [2024-06-21 20:08:55,871 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:08:55,871 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:08:55,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:08:56,615 INFO L124 PetriNetUnfolderBase]: 1024/1895 cut-off events. [2024-06-21 20:08:56,616 INFO L125 PetriNetUnfolderBase]: For 267972/267972 co-relation queries the response was YES. [2024-06-21 20:08:56,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11242 conditions, 1895 events. 1024/1895 cut-off events. For 267972/267972 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 11342 event pairs, 213 based on Foata normal form. 2/1896 useless extension candidates. Maximal degree in co-relation 11078. Up to 1682 conditions per place. [2024-06-21 20:08:56,640 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 303 selfloop transitions, 46 changer transitions 0/351 dead transitions. [2024-06-21 20:08:56,640 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 396 places, 351 transitions, 3926 flow [2024-06-21 20:08:56,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:08:56,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:08:56,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 119 transitions. [2024-06-21 20:08:56,641 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3380681818181818 [2024-06-21 20:08:56,641 INFO L175 Difference]: Start difference. First operand has 392 places, 329 transitions, 2860 flow. Second operand 11 states and 119 transitions. [2024-06-21 20:08:56,641 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 396 places, 351 transitions, 3926 flow [2024-06-21 20:08:57,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 384 places, 351 transitions, 3810 flow, removed 10 selfloop flow, removed 12 redundant places. [2024-06-21 20:08:57,478 INFO L231 Difference]: Finished difference. Result has 385 places, 330 transitions, 2896 flow [2024-06-21 20:08:57,478 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2754, PETRI_DIFFERENCE_MINUEND_PLACES=374, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=329, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2896, PETRI_PLACES=385, PETRI_TRANSITIONS=330} [2024-06-21 20:08:57,478 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 354 predicate places. [2024-06-21 20:08:57,478 INFO L495 AbstractCegarLoop]: Abstraction has has 385 places, 330 transitions, 2896 flow [2024-06-21 20:08:57,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 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) [2024-06-21 20:08:57,478 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:08:57,478 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:08:57,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2024-06-21 20:08:57,479 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)] === [2024-06-21 20:08:57,479 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:08:57,479 INFO L85 PathProgramCache]: Analyzing trace with hash -649867514, now seen corresponding path program 15 times [2024-06-21 20:08:57,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:08:57,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85338667] [2024-06-21 20:08:57,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:08:57,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:08:57,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:08:59,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:08:59,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:08:59,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85338667] [2024-06-21 20:08:59,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85338667] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:08:59,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:08:59,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-21 20:08:59,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596120774] [2024-06-21 20:08:59,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:08:59,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-21 20:08:59,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:08:59,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-21 20:08:59,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-06-21 20:08:59,198 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:08:59,199 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 385 places, 330 transitions, 2896 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 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) [2024-06-21 20:08:59,199 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:08:59,199 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:08:59,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:08:59,917 INFO L124 PetriNetUnfolderBase]: 1028/1903 cut-off events. [2024-06-21 20:08:59,917 INFO L125 PetriNetUnfolderBase]: For 257162/257162 co-relation queries the response was YES. [2024-06-21 20:08:59,936 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11259 conditions, 1903 events. 1028/1903 cut-off events. For 257162/257162 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 11407 event pairs, 206 based on Foata normal form. 2/1904 useless extension candidates. Maximal degree in co-relation 11098. Up to 1657 conditions per place. [2024-06-21 20:08:59,940 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 281 selfloop transitions, 68 changer transitions 0/351 dead transitions. [2024-06-21 20:08:59,940 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 395 places, 351 transitions, 3696 flow [2024-06-21 20:08:59,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:08:59,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:08:59,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 119 transitions. [2024-06-21 20:08:59,941 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3380681818181818 [2024-06-21 20:08:59,941 INFO L175 Difference]: Start difference. First operand has 385 places, 330 transitions, 2896 flow. Second operand 11 states and 119 transitions. [2024-06-21 20:08:59,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 395 places, 351 transitions, 3696 flow [2024-06-21 20:09:00,979 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 386 places, 351 transitions, 3564 flow, removed 21 selfloop flow, removed 9 redundant places. [2024-06-21 20:09:00,982 INFO L231 Difference]: Finished difference. Result has 387 places, 331 transitions, 2952 flow [2024-06-21 20:09:00,982 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2764, PETRI_DIFFERENCE_MINUEND_PLACES=376, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=330, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2952, PETRI_PLACES=387, PETRI_TRANSITIONS=331} [2024-06-21 20:09:00,982 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 356 predicate places. [2024-06-21 20:09:00,982 INFO L495 AbstractCegarLoop]: Abstraction has has 387 places, 331 transitions, 2952 flow [2024-06-21 20:09:00,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 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) [2024-06-21 20:09:00,982 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:09:00,983 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:09:00,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2024-06-21 20:09:00,983 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)] === [2024-06-21 20:09:00,983 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:09:00,983 INFO L85 PathProgramCache]: Analyzing trace with hash -1587194362, now seen corresponding path program 16 times [2024-06-21 20:09:00,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:09:00,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099122818] [2024-06-21 20:09:00,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:09:00,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:09:00,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:09:02,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:09:02,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:09:02,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099122818] [2024-06-21 20:09:02,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099122818] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:09:02,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:09:02,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 20:09:02,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265960688] [2024-06-21 20:09:02,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:09:02,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 20:09:02,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:09:02,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 20:09:02,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-21 20:09:02,726 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:09:02,726 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 387 places, 331 transitions, 2952 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:09:02,726 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:09:02,726 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:09:02,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:09:03,350 INFO L124 PetriNetUnfolderBase]: 1017/1878 cut-off events. [2024-06-21 20:09:03,350 INFO L125 PetriNetUnfolderBase]: For 214421/214421 co-relation queries the response was YES. [2024-06-21 20:09:03,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10512 conditions, 1878 events. 1017/1878 cut-off events. For 214421/214421 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 11288 event pairs, 230 based on Foata normal form. 2/1879 useless extension candidates. Maximal degree in co-relation 10350. Up to 1704 conditions per place. [2024-06-21 20:09:03,372 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 299 selfloop transitions, 48 changer transitions 0/349 dead transitions. [2024-06-21 20:09:03,372 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 397 places, 349 transitions, 3742 flow [2024-06-21 20:09:03,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:09:03,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:09:03,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 117 transitions. [2024-06-21 20:09:03,373 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33238636363636365 [2024-06-21 20:09:03,373 INFO L175 Difference]: Start difference. First operand has 387 places, 331 transitions, 2952 flow. Second operand 11 states and 117 transitions. [2024-06-21 20:09:03,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 397 places, 349 transitions, 3742 flow [2024-06-21 20:09:04,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 388 places, 349 transitions, 3564 flow, removed 22 selfloop flow, removed 9 redundant places. [2024-06-21 20:09:04,218 INFO L231 Difference]: Finished difference. Result has 389 places, 332 transitions, 2924 flow [2024-06-21 20:09:04,218 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2774, PETRI_DIFFERENCE_MINUEND_PLACES=378, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=331, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2924, PETRI_PLACES=389, PETRI_TRANSITIONS=332} [2024-06-21 20:09:04,218 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 358 predicate places. [2024-06-21 20:09:04,218 INFO L495 AbstractCegarLoop]: Abstraction has has 389 places, 332 transitions, 2924 flow [2024-06-21 20:09:04,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:09:04,219 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:09:04,219 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:09:04,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2024-06-21 20:09:04,219 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)] === [2024-06-21 20:09:04,219 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:09:04,219 INFO L85 PathProgramCache]: Analyzing trace with hash 845133840, now seen corresponding path program 17 times [2024-06-21 20:09:04,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:09:04,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631929044] [2024-06-21 20:09:04,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:09:04,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:09:04,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:09:05,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:09:05,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:09:05,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631929044] [2024-06-21 20:09:05,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631929044] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:09:05,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:09:05,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 20:09:05,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116946366] [2024-06-21 20:09:05,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:09:05,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 20:09:05,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:09:05,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 20:09:05,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-21 20:09:05,710 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:09:05,710 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 389 places, 332 transitions, 2924 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:09:05,710 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:09:05,710 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:09:05,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:09:06,328 INFO L124 PetriNetUnfolderBase]: 1021/1887 cut-off events. [2024-06-21 20:09:06,329 INFO L125 PetriNetUnfolderBase]: For 218048/218050 co-relation queries the response was YES. [2024-06-21 20:09:06,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10519 conditions, 1887 events. 1021/1887 cut-off events. For 218048/218050 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 11357 event pairs, 212 based on Foata normal form. 2/1888 useless extension candidates. Maximal degree in co-relation 10356. Up to 1672 conditions per place. [2024-06-21 20:09:06,351 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 293 selfloop transitions, 58 changer transitions 0/353 dead transitions. [2024-06-21 20:09:06,351 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 399 places, 353 transitions, 3742 flow [2024-06-21 20:09:06,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:09:06,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:09:06,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-21 20:09:06,352 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3465909090909091 [2024-06-21 20:09:06,352 INFO L175 Difference]: Start difference. First operand has 389 places, 332 transitions, 2924 flow. Second operand 11 states and 122 transitions. [2024-06-21 20:09:06,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 399 places, 353 transitions, 3742 flow [2024-06-21 20:09:07,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 390 places, 353 transitions, 3602 flow, removed 23 selfloop flow, removed 9 redundant places. [2024-06-21 20:09:07,248 INFO L231 Difference]: Finished difference. Result has 391 places, 333 transitions, 2956 flow [2024-06-21 20:09:07,248 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2784, PETRI_DIFFERENCE_MINUEND_PLACES=380, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=332, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2956, PETRI_PLACES=391, PETRI_TRANSITIONS=333} [2024-06-21 20:09:07,248 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 360 predicate places. [2024-06-21 20:09:07,248 INFO L495 AbstractCegarLoop]: Abstraction has has 391 places, 333 transitions, 2956 flow [2024-06-21 20:09:07,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:09:07,248 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:09:07,248 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:09:07,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2024-06-21 20:09:07,249 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)] === [2024-06-21 20:09:07,249 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:09:07,249 INFO L85 PathProgramCache]: Analyzing trace with hash -103326530, now seen corresponding path program 18 times [2024-06-21 20:09:07,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:09:07,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282554703] [2024-06-21 20:09:07,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:09:07,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:09:07,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:09:08,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:09:08,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:09:08,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282554703] [2024-06-21 20:09:08,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282554703] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:09:08,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:09:08,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 20:09:08,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399785363] [2024-06-21 20:09:08,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:09:08,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 20:09:08,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:09:08,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 20:09:08,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-21 20:09:08,770 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:09:08,770 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 391 places, 333 transitions, 2956 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:09:08,770 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:09:08,770 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:09:08,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:09:09,544 INFO L124 PetriNetUnfolderBase]: 1025/1895 cut-off events. [2024-06-21 20:09:09,544 INFO L125 PetriNetUnfolderBase]: For 221430/221432 co-relation queries the response was YES. [2024-06-21 20:09:09,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10610 conditions, 1895 events. 1025/1895 cut-off events. For 221430/221432 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 11416 event pairs, 148 based on Foata normal form. 2/1896 useless extension candidates. Maximal degree in co-relation 10446. Up to 1051 conditions per place. [2024-06-21 20:09:09,568 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 188 selfloop transitions, 166 changer transitions 0/356 dead transitions. [2024-06-21 20:09:09,568 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 401 places, 356 transitions, 3792 flow [2024-06-21 20:09:09,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:09:09,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:09:09,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 131 transitions. [2024-06-21 20:09:09,569 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3721590909090909 [2024-06-21 20:09:09,569 INFO L175 Difference]: Start difference. First operand has 391 places, 333 transitions, 2956 flow. Second operand 11 states and 131 transitions. [2024-06-21 20:09:09,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 401 places, 356 transitions, 3792 flow [2024-06-21 20:09:10,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 392 places, 356 transitions, 3630 flow, removed 24 selfloop flow, removed 9 redundant places. [2024-06-21 20:09:10,551 INFO L231 Difference]: Finished difference. Result has 393 places, 334 transitions, 3184 flow [2024-06-21 20:09:10,551 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2794, PETRI_DIFFERENCE_MINUEND_PLACES=382, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=333, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=165, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3184, PETRI_PLACES=393, PETRI_TRANSITIONS=334} [2024-06-21 20:09:10,552 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 362 predicate places. [2024-06-21 20:09:10,552 INFO L495 AbstractCegarLoop]: Abstraction has has 393 places, 334 transitions, 3184 flow [2024-06-21 20:09:10,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:09:10,552 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:09:10,552 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:09:10,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2024-06-21 20:09:10,553 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)] === [2024-06-21 20:09:10,553 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:09:10,553 INFO L85 PathProgramCache]: Analyzing trace with hash 1787244878, now seen corresponding path program 7 times [2024-06-21 20:09:10,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:09:10,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098987229] [2024-06-21 20:09:10,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:09:10,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:09:10,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:09:12,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:09:12,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:09:12,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098987229] [2024-06-21 20:09:12,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098987229] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:09:12,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:09:12,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-21 20:09:12,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337498944] [2024-06-21 20:09:12,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:09:12,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-21 20:09:12,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:09:12,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-21 20:09:12,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-06-21 20:09:12,177 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:09:12,177 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 393 places, 334 transitions, 3184 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 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) [2024-06-21 20:09:12,177 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:09:12,178 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:09:12,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:09:12,993 INFO L124 PetriNetUnfolderBase]: 1073/1995 cut-off events. [2024-06-21 20:09:12,993 INFO L125 PetriNetUnfolderBase]: For 385637/385639 co-relation queries the response was YES. [2024-06-21 20:09:13,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12935 conditions, 1995 events. 1073/1995 cut-off events. For 385637/385639 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 12029 event pairs, 160 based on Foata normal form. 8/2002 useless extension candidates. Maximal degree in co-relation 12770. Up to 1013 conditions per place. [2024-06-21 20:09:13,019 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 196 selfloop transitions, 163 changer transitions 8/369 dead transitions. [2024-06-21 20:09:13,019 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 404 places, 369 transitions, 4398 flow [2024-06-21 20:09:13,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 20:09:13,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 20:09:13,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 150 transitions. [2024-06-21 20:09:13,020 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-21 20:09:13,020 INFO L175 Difference]: Start difference. First operand has 393 places, 334 transitions, 3184 flow. Second operand 12 states and 150 transitions. [2024-06-21 20:09:13,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 404 places, 369 transitions, 4398 flow [2024-06-21 20:09:14,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 395 places, 369 transitions, 4018 flow, removed 25 selfloop flow, removed 9 redundant places. [2024-06-21 20:09:14,338 INFO L231 Difference]: Finished difference. Result has 396 places, 332 transitions, 3121 flow [2024-06-21 20:09:14,338 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2804, PETRI_DIFFERENCE_MINUEND_PLACES=384, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=334, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=163, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3121, PETRI_PLACES=396, PETRI_TRANSITIONS=332} [2024-06-21 20:09:14,338 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 365 predicate places. [2024-06-21 20:09:14,338 INFO L495 AbstractCegarLoop]: Abstraction has has 396 places, 332 transitions, 3121 flow [2024-06-21 20:09:14,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 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) [2024-06-21 20:09:14,338 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:09:14,339 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:09:14,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2024-06-21 20:09:14,339 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)] === [2024-06-21 20:09:14,339 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:09:14,339 INFO L85 PathProgramCache]: Analyzing trace with hash 1340995402, now seen corresponding path program 19 times [2024-06-21 20:09:14,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:09:14,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670293888] [2024-06-21 20:09:14,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:09:14,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:09:14,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:09:16,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:09:16,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:09:16,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670293888] [2024-06-21 20:09:16,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670293888] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:09:16,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:09:16,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-21 20:09:16,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064834979] [2024-06-21 20:09:16,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:09:16,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-21 20:09:16,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:09:16,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-21 20:09:16,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-06-21 20:09:16,153 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:09:16,153 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 396 places, 332 transitions, 3121 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 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) [2024-06-21 20:09:16,153 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:09:16,153 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:09:16,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:09:16,875 INFO L124 PetriNetUnfolderBase]: 1053/1955 cut-off events. [2024-06-21 20:09:16,875 INFO L125 PetriNetUnfolderBase]: For 337834/337836 co-relation queries the response was YES. [2024-06-21 20:09:16,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12818 conditions, 1955 events. 1053/1955 cut-off events. For 337834/337836 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 11802 event pairs, 232 based on Foata normal form. 2/1956 useless extension candidates. Maximal degree in co-relation 12652. Up to 1741 conditions per place. [2024-06-21 20:09:16,900 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 291 selfloop transitions, 59 changer transitions 0/352 dead transitions. [2024-06-21 20:09:16,900 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 404 places, 352 transitions, 3933 flow [2024-06-21 20:09:16,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:09:16,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:09:16,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-21 20:09:16,901 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-21 20:09:16,901 INFO L175 Difference]: Start difference. First operand has 396 places, 332 transitions, 3121 flow. Second operand 11 states and 121 transitions. [2024-06-21 20:09:16,901 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 404 places, 352 transitions, 3933 flow [2024-06-21 20:09:18,349 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 393 places, 352 transitions, 3609 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-21 20:09:18,352 INFO L231 Difference]: Finished difference. Result has 394 places, 333 transitions, 2976 flow [2024-06-21 20:09:18,352 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2797, PETRI_DIFFERENCE_MINUEND_PLACES=383, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=332, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2976, PETRI_PLACES=394, PETRI_TRANSITIONS=333} [2024-06-21 20:09:18,352 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 363 predicate places. [2024-06-21 20:09:18,352 INFO L495 AbstractCegarLoop]: Abstraction has has 394 places, 333 transitions, 2976 flow [2024-06-21 20:09:18,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 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) [2024-06-21 20:09:18,352 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:09:18,352 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:09:18,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2024-06-21 20:09:18,352 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)] === [2024-06-21 20:09:18,353 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:09:18,353 INFO L85 PathProgramCache]: Analyzing trace with hash 1521166478, now seen corresponding path program 8 times [2024-06-21 20:09:18,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:09:18,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529214186] [2024-06-21 20:09:18,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:09:18,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:09:18,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:09:20,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:09:20,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:09:20,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529214186] [2024-06-21 20:09:20,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529214186] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:09:20,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:09:20,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-21 20:09:20,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493005116] [2024-06-21 20:09:20,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:09:20,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-21 20:09:20,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:09:20,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-21 20:09:20,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-06-21 20:09:20,337 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:09:20,337 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 394 places, 333 transitions, 2976 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 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) [2024-06-21 20:09:20,337 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:09:20,337 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:09:20,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:09:21,440 INFO L124 PetriNetUnfolderBase]: 1094/2042 cut-off events. [2024-06-21 20:09:21,441 INFO L125 PetriNetUnfolderBase]: For 474842/474844 co-relation queries the response was YES. [2024-06-21 20:09:21,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14183 conditions, 2042 events. 1094/2042 cut-off events. For 474842/474844 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 12388 event pairs, 237 based on Foata normal form. 8/2049 useless extension candidates. Maximal degree in co-relation 14018. Up to 1664 conditions per place. [2024-06-21 20:09:21,461 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 291 selfloop transitions, 64 changer transitions 8/365 dead transitions. [2024-06-21 20:09:21,462 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 405 places, 365 transitions, 4118 flow [2024-06-21 20:09:21,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 20:09:21,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 20:09:21,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 140 transitions. [2024-06-21 20:09:21,462 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3645833333333333 [2024-06-21 20:09:21,462 INFO L175 Difference]: Start difference. First operand has 394 places, 333 transitions, 2976 flow. Second operand 12 states and 140 transitions. [2024-06-21 20:09:21,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 405 places, 365 transitions, 4118 flow [2024-06-21 20:09:22,929 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 396 places, 365 transitions, 3951 flow, removed 26 selfloop flow, removed 9 redundant places. [2024-06-21 20:09:22,932 INFO L231 Difference]: Finished difference. Result has 397 places, 331 transitions, 2918 flow [2024-06-21 20:09:22,932 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2809, PETRI_DIFFERENCE_MINUEND_PLACES=385, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=333, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2918, PETRI_PLACES=397, PETRI_TRANSITIONS=331} [2024-06-21 20:09:22,933 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 366 predicate places. [2024-06-21 20:09:22,933 INFO L495 AbstractCegarLoop]: Abstraction has has 397 places, 331 transitions, 2918 flow [2024-06-21 20:09:22,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 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) [2024-06-21 20:09:22,933 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:09:22,933 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:09:22,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2024-06-21 20:09:22,933 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)] === [2024-06-21 20:09:22,933 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:09:22,933 INFO L85 PathProgramCache]: Analyzing trace with hash 1540297192, now seen corresponding path program 20 times [2024-06-21 20:09:22,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:09:22,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059888533] [2024-06-21 20:09:22,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:09:22,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:09:22,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:09:24,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:09:24,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:09:24,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059888533] [2024-06-21 20:09:24,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059888533] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:09:24,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:09:24,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-21 20:09:24,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407311463] [2024-06-21 20:09:24,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:09:24,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-21 20:09:24,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:09:24,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-21 20:09:24,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2024-06-21 20:09:24,532 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:09:24,532 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 397 places, 331 transitions, 2918 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 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) [2024-06-21 20:09:24,532 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:09:24,532 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:09:24,533 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:09:25,355 INFO L124 PetriNetUnfolderBase]: 1074/2002 cut-off events. [2024-06-21 20:09:25,355 INFO L125 PetriNetUnfolderBase]: For 428348/428350 co-relation queries the response was YES. [2024-06-21 20:09:25,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14086 conditions, 2002 events. 1074/2002 cut-off events. For 428348/428350 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 12101 event pairs, 233 based on Foata normal form. 2/2003 useless extension candidates. Maximal degree in co-relation 13920. Up to 1710 conditions per place. [2024-06-21 20:09:25,375 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 274 selfloop transitions, 76 changer transitions 0/352 dead transitions. [2024-06-21 20:09:25,375 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 405 places, 352 transitions, 3738 flow [2024-06-21 20:09:25,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:09:25,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:09:25,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-06-21 20:09:25,376 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35511363636363635 [2024-06-21 20:09:25,376 INFO L175 Difference]: Start difference. First operand has 397 places, 331 transitions, 2918 flow. Second operand 11 states and 125 transitions. [2024-06-21 20:09:25,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 405 places, 352 transitions, 3738 flow [2024-06-21 20:09:26,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 394 places, 352 transitions, 3614 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-21 20:09:26,874 INFO L231 Difference]: Finished difference. Result has 395 places, 332 transitions, 3009 flow [2024-06-21 20:09:26,875 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2794, PETRI_DIFFERENCE_MINUEND_PLACES=384, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=331, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3009, PETRI_PLACES=395, PETRI_TRANSITIONS=332} [2024-06-21 20:09:26,875 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 364 predicate places. [2024-06-21 20:09:26,875 INFO L495 AbstractCegarLoop]: Abstraction has has 395 places, 332 transitions, 3009 flow [2024-06-21 20:09:26,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 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) [2024-06-21 20:09:26,875 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:09:26,875 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:09:26,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2024-06-21 20:09:26,875 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)] === [2024-06-21 20:09:26,875 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:09:26,876 INFO L85 PathProgramCache]: Analyzing trace with hash -2003332136, now seen corresponding path program 9 times [2024-06-21 20:09:26,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:09:26,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937879673] [2024-06-21 20:09:26,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:09:26,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:09:26,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:09:28,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:09:28,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:09:28,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937879673] [2024-06-21 20:09:28,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937879673] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:09:28,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:09:28,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-21 20:09:28,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458301605] [2024-06-21 20:09:28,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:09:28,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-21 20:09:28,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:09:28,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-21 20:09:28,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-21 20:09:28,517 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:09:28,517 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 395 places, 332 transitions, 3009 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 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) [2024-06-21 20:09:28,517 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:09:28,517 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:09:28,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:09:29,486 INFO L124 PetriNetUnfolderBase]: 1090/2038 cut-off events. [2024-06-21 20:09:29,487 INFO L125 PetriNetUnfolderBase]: For 502616/502618 co-relation queries the response was YES. [2024-06-21 20:09:29,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14273 conditions, 2038 events. 1090/2038 cut-off events. For 502616/502618 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 12350 event pairs, 181 based on Foata normal form. 10/2047 useless extension candidates. Maximal degree in co-relation 14108. Up to 1152 conditions per place. [2024-06-21 20:09:29,509 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 189 selfloop transitions, 160 changer transitions 12/363 dead transitions. [2024-06-21 20:09:29,509 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 407 places, 363 transitions, 3859 flow [2024-06-21 20:09:29,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-21 20:09:29,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-21 20:09:29,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 155 transitions. [2024-06-21 20:09:29,510 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37259615384615385 [2024-06-21 20:09:29,510 INFO L175 Difference]: Start difference. First operand has 395 places, 332 transitions, 3009 flow. Second operand 13 states and 155 transitions. [2024-06-21 20:09:29,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 407 places, 363 transitions, 3859 flow [2024-06-21 20:09:31,196 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 398 places, 363 transitions, 3656 flow, removed 27 selfloop flow, removed 9 redundant places. [2024-06-21 20:09:31,199 INFO L231 Difference]: Finished difference. Result has 399 places, 327 transitions, 3100 flow [2024-06-21 20:09:31,199 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2806, PETRI_DIFFERENCE_MINUEND_PLACES=386, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=332, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=160, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3100, PETRI_PLACES=399, PETRI_TRANSITIONS=327} [2024-06-21 20:09:31,199 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 368 predicate places. [2024-06-21 20:09:31,199 INFO L495 AbstractCegarLoop]: Abstraction has has 399 places, 327 transitions, 3100 flow [2024-06-21 20:09:31,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 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) [2024-06-21 20:09:31,200 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:09:31,200 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:09:31,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2024-06-21 20:09:31,200 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)] === [2024-06-21 20:09:31,200 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:09:31,200 INFO L85 PathProgramCache]: Analyzing trace with hash -1540294070, now seen corresponding path program 21 times [2024-06-21 20:09:31,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:09:31,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403224665] [2024-06-21 20:09:31,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:09:31,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:09:31,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:09:32,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:09:32,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:09:32,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403224665] [2024-06-21 20:09:32,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403224665] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:09:32,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:09:32,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 20:09:32,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468358679] [2024-06-21 20:09:32,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:09:32,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 20:09:32,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:09:32,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 20:09:32,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-21 20:09:32,534 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:09:32,534 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 327 transitions, 3100 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:09:32,534 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:09:32,534 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:09:32,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:09:33,330 INFO L124 PetriNetUnfolderBase]: 1055/1973 cut-off events. [2024-06-21 20:09:33,331 INFO L125 PetriNetUnfolderBase]: For 416458/416460 co-relation queries the response was YES. [2024-06-21 20:09:33,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13882 conditions, 1973 events. 1055/1973 cut-off events. For 416458/416460 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 11890 event pairs, 176 based on Foata normal form. 2/1974 useless extension candidates. Maximal degree in co-relation 13716. Up to 1147 conditions per place. [2024-06-21 20:09:33,350 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 185 selfloop transitions, 161 changer transitions 0/348 dead transitions. [2024-06-21 20:09:33,350 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 406 places, 348 transitions, 3916 flow [2024-06-21 20:09:33,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:09:33,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:09:33,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-21 20:09:33,351 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3664772727272727 [2024-06-21 20:09:33,351 INFO L175 Difference]: Start difference. First operand has 399 places, 327 transitions, 3100 flow. Second operand 11 states and 129 transitions. [2024-06-21 20:09:33,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 406 places, 348 transitions, 3916 flow [2024-06-21 20:09:35,151 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 392 places, 348 transitions, 3588 flow, removed 3 selfloop flow, removed 14 redundant places. [2024-06-21 20:09:35,155 INFO L231 Difference]: Finished difference. Result has 393 places, 328 transitions, 3158 flow [2024-06-21 20:09:35,155 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2772, PETRI_DIFFERENCE_MINUEND_PLACES=382, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=160, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3158, PETRI_PLACES=393, PETRI_TRANSITIONS=328} [2024-06-21 20:09:35,155 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 362 predicate places. [2024-06-21 20:09:35,155 INFO L495 AbstractCegarLoop]: Abstraction has has 393 places, 328 transitions, 3158 flow [2024-06-21 20:09:35,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:09:35,155 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:09:35,155 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:09:35,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2024-06-21 20:09:35,155 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)] === [2024-06-21 20:09:35,156 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:09:35,156 INFO L85 PathProgramCache]: Analyzing trace with hash 1340989822, now seen corresponding path program 22 times [2024-06-21 20:09:35,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:09:35,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250898290] [2024-06-21 20:09:35,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:09:35,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:09:35,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:09:37,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:09:37,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:09:37,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250898290] [2024-06-21 20:09:37,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250898290] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:09:37,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:09:37,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-21 20:09:37,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143043158] [2024-06-21 20:09:37,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:09:37,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-21 20:09:37,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:09:37,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-21 20:09:37,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-06-21 20:09:37,172 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:09:37,172 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 393 places, 328 transitions, 3158 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 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) [2024-06-21 20:09:37,172 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:09:37,172 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:09:37,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:09:37,971 INFO L124 PetriNetUnfolderBase]: 1059/1981 cut-off events. [2024-06-21 20:09:37,971 INFO L125 PetriNetUnfolderBase]: For 406531/406533 co-relation queries the response was YES. [2024-06-21 20:09:37,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13938 conditions, 1981 events. 1059/1981 cut-off events. For 406531/406533 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 11978 event pairs, 242 based on Foata normal form. 2/1982 useless extension candidates. Maximal degree in co-relation 13774. Up to 1743 conditions per place. [2024-06-21 20:09:37,996 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 286 selfloop transitions, 60 changer transitions 0/348 dead transitions. [2024-06-21 20:09:37,996 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 403 places, 348 transitions, 3966 flow [2024-06-21 20:09:37,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:09:37,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:09:37,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-21 20:09:37,997 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3465909090909091 [2024-06-21 20:09:37,997 INFO L175 Difference]: Start difference. First operand has 393 places, 328 transitions, 3158 flow. Second operand 11 states and 122 transitions. [2024-06-21 20:09:37,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 403 places, 348 transitions, 3966 flow [2024-06-21 20:09:39,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 394 places, 348 transitions, 3590 flow, removed 28 selfloop flow, removed 9 redundant places. [2024-06-21 20:09:39,716 INFO L231 Difference]: Finished difference. Result has 395 places, 329 transitions, 2969 flow [2024-06-21 20:09:39,716 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2782, PETRI_DIFFERENCE_MINUEND_PLACES=384, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=328, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2969, PETRI_PLACES=395, PETRI_TRANSITIONS=329} [2024-06-21 20:09:39,716 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 364 predicate places. [2024-06-21 20:09:39,716 INFO L495 AbstractCegarLoop]: Abstraction has has 395 places, 329 transitions, 2969 flow [2024-06-21 20:09:39,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 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) [2024-06-21 20:09:39,716 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:09:39,716 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:09:39,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2024-06-21 20:09:39,717 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)] === [2024-06-21 20:09:39,717 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:09:39,717 INFO L85 PathProgramCache]: Analyzing trace with hash 344181788, now seen corresponding path program 23 times [2024-06-21 20:09:39,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:09:39,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150150143] [2024-06-21 20:09:39,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:09:39,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:09:39,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:09:41,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:09:41,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:09:41,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150150143] [2024-06-21 20:09:41,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150150143] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:09:41,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:09:41,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-21 20:09:41,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741337210] [2024-06-21 20:09:41,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:09:41,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-21 20:09:41,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:09:41,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-21 20:09:41,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-06-21 20:09:41,499 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:09:41,499 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 395 places, 329 transitions, 2969 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 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) [2024-06-21 20:09:41,499 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:09:41,499 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:09:41,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:09:42,187 INFO L124 PetriNetUnfolderBase]: 1063/1989 cut-off events. [2024-06-21 20:09:42,187 INFO L125 PetriNetUnfolderBase]: For 412318/412320 co-relation queries the response was YES. [2024-06-21 20:09:42,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13751 conditions, 1989 events. 1063/1989 cut-off events. For 412318/412320 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 12028 event pairs, 258 based on Foata normal form. 2/1990 useless extension candidates. Maximal degree in co-relation 13586. Up to 1814 conditions per place. [2024-06-21 20:09:42,211 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 298 selfloop transitions, 47 changer transitions 0/347 dead transitions. [2024-06-21 20:09:42,211 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 405 places, 347 transitions, 3767 flow [2024-06-21 20:09:42,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:09:42,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:09:42,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 116 transitions. [2024-06-21 20:09:42,212 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32954545454545453 [2024-06-21 20:09:42,212 INFO L175 Difference]: Start difference. First operand has 395 places, 329 transitions, 2969 flow. Second operand 11 states and 116 transitions. [2024-06-21 20:09:42,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 405 places, 347 transitions, 3767 flow [2024-06-21 20:09:43,767 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 396 places, 347 transitions, 3592 flow, removed 29 selfloop flow, removed 9 redundant places. [2024-06-21 20:09:43,770 INFO L231 Difference]: Finished difference. Result has 397 places, 330 transitions, 2956 flow [2024-06-21 20:09:43,770 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2794, PETRI_DIFFERENCE_MINUEND_PLACES=386, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=329, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2956, PETRI_PLACES=397, PETRI_TRANSITIONS=330} [2024-06-21 20:09:43,771 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 366 predicate places. [2024-06-21 20:09:43,771 INFO L495 AbstractCegarLoop]: Abstraction has has 397 places, 330 transitions, 2956 flow [2024-06-21 20:09:43,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 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) [2024-06-21 20:09:43,771 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:09:43,771 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:09:43,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2024-06-21 20:09:43,771 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)] === [2024-06-21 20:09:43,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:09:43,771 INFO L85 PathProgramCache]: Analyzing trace with hash -418649914, now seen corresponding path program 24 times [2024-06-21 20:09:43,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:09:43,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035437470] [2024-06-21 20:09:43,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:09:43,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:09:43,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:09:45,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:09:45,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:09:45,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035437470] [2024-06-21 20:09:45,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035437470] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:09:45,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:09:45,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-21 20:09:45,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071260519] [2024-06-21 20:09:45,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:09:45,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-21 20:09:45,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:09:45,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-21 20:09:45,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-06-21 20:09:45,297 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:09:45,297 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 397 places, 330 transitions, 2956 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 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) [2024-06-21 20:09:45,297 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:09:45,298 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:09:45,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:09:46,077 INFO L124 PetriNetUnfolderBase]: 1067/1997 cut-off events. [2024-06-21 20:09:46,078 INFO L125 PetriNetUnfolderBase]: For 418579/418581 co-relation queries the response was YES. [2024-06-21 20:09:46,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13798 conditions, 1997 events. 1067/1997 cut-off events. For 418579/418581 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 12094 event pairs, 258 based on Foata normal form. 2/1998 useless extension candidates. Maximal degree in co-relation 13632. Up to 1822 conditions per place. [2024-06-21 20:09:46,104 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 300 selfloop transitions, 46 changer transitions 0/348 dead transitions. [2024-06-21 20:09:46,104 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 407 places, 348 transitions, 3756 flow [2024-06-21 20:09:46,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:09:46,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:09:46,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 115 transitions. [2024-06-21 20:09:46,105 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32670454545454547 [2024-06-21 20:09:46,105 INFO L175 Difference]: Start difference. First operand has 397 places, 330 transitions, 2956 flow. Second operand 11 states and 115 transitions. [2024-06-21 20:09:46,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 407 places, 348 transitions, 3756 flow [2024-06-21 20:09:47,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 398 places, 348 transitions, 3604 flow, removed 30 selfloop flow, removed 9 redundant places. [2024-06-21 20:09:47,640 INFO L231 Difference]: Finished difference. Result has 399 places, 331 transitions, 2966 flow [2024-06-21 20:09:47,640 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2804, PETRI_DIFFERENCE_MINUEND_PLACES=388, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=330, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2966, PETRI_PLACES=399, PETRI_TRANSITIONS=331} [2024-06-21 20:09:47,641 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 368 predicate places. [2024-06-21 20:09:47,641 INFO L495 AbstractCegarLoop]: Abstraction has has 399 places, 331 transitions, 2966 flow [2024-06-21 20:09:47,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 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) [2024-06-21 20:09:47,641 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:09:47,641 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:09:47,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181 [2024-06-21 20:09:47,642 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)] === [2024-06-21 20:09:47,642 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:09:47,642 INFO L85 PathProgramCache]: Analyzing trace with hash 488287644, now seen corresponding path program 10 times [2024-06-21 20:09:47,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:09:47,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751937821] [2024-06-21 20:09:47,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:09:47,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:09:47,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:09:49,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:09:49,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:09:49,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751937821] [2024-06-21 20:09:49,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751937821] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:09:49,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:09:49,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-21 20:09:49,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866579553] [2024-06-21 20:09:49,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:09:49,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-21 20:09:49,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:09:49,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-21 20:09:49,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-06-21 20:09:49,817 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:09:49,818 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 331 transitions, 2966 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 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) [2024-06-21 20:09:49,818 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:09:49,818 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:09:49,818 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:09:50,676 INFO L124 PetriNetUnfolderBase]: 1083/2033 cut-off events. [2024-06-21 20:09:50,676 INFO L125 PetriNetUnfolderBase]: For 497382/497384 co-relation queries the response was YES. [2024-06-21 20:09:50,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13857 conditions, 2033 events. 1083/2033 cut-off events. For 497382/497384 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 12393 event pairs, 272 based on Foata normal form. 10/2042 useless extension candidates. Maximal degree in co-relation 13690. Up to 1808 conditions per place. [2024-06-21 20:09:50,702 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 296 selfloop transitions, 47 changer transitions 9/354 dead transitions. [2024-06-21 20:09:50,702 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 410 places, 354 transitions, 3758 flow [2024-06-21 20:09:50,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 20:09:50,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 20:09:50,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 130 transitions. [2024-06-21 20:09:50,703 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3385416666666667 [2024-06-21 20:09:50,703 INFO L175 Difference]: Start difference. First operand has 399 places, 331 transitions, 2966 flow. Second operand 12 states and 130 transitions. [2024-06-21 20:09:50,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 410 places, 354 transitions, 3758 flow [2024-06-21 20:09:52,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 401 places, 354 transitions, 3606 flow, removed 31 selfloop flow, removed 9 redundant places. [2024-06-21 20:09:52,325 INFO L231 Difference]: Finished difference. Result has 402 places, 328 transitions, 2893 flow [2024-06-21 20:09:52,325 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2814, PETRI_DIFFERENCE_MINUEND_PLACES=390, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=331, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2893, PETRI_PLACES=402, PETRI_TRANSITIONS=328} [2024-06-21 20:09:52,325 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 371 predicate places. [2024-06-21 20:09:52,325 INFO L495 AbstractCegarLoop]: Abstraction has has 402 places, 328 transitions, 2893 flow [2024-06-21 20:09:52,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 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) [2024-06-21 20:09:52,325 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:09:52,325 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:09:52,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182 [2024-06-21 20:09:52,326 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)] === [2024-06-21 20:09:52,326 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:09:52,326 INFO L85 PathProgramCache]: Analyzing trace with hash -1054871766, now seen corresponding path program 11 times [2024-06-21 20:09:52,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:09:52,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113296417] [2024-06-21 20:09:52,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:09:52,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:09:52,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:09:53,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:09:53,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:09:53,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113296417] [2024-06-21 20:09:53,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113296417] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:09:53,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:09:53,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-21 20:09:53,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306969899] [2024-06-21 20:09:53,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:09:53,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-21 20:09:53,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:09:53,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-21 20:09:53,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-06-21 20:09:54,035 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:09:54,035 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 402 places, 328 transitions, 2893 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 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) [2024-06-21 20:09:54,035 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:09:54,035 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:09:54,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:09:54,922 INFO L124 PetriNetUnfolderBase]: 1081/2039 cut-off events. [2024-06-21 20:09:54,922 INFO L125 PetriNetUnfolderBase]: For 560776/560778 co-relation queries the response was YES. [2024-06-21 20:09:54,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13778 conditions, 2039 events. 1081/2039 cut-off events. For 560776/560778 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 12493 event pairs, 258 based on Foata normal form. 16/2054 useless extension candidates. Maximal degree in co-relation 13610. Up to 1714 conditions per place. [2024-06-21 20:09:54,949 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 276 selfloop transitions, 56 changer transitions 23/357 dead transitions. [2024-06-21 20:09:54,949 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 412 places, 357 transitions, 3721 flow [2024-06-21 20:09:54,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-21 20:09:54,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-21 20:09:54,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 146 transitions. [2024-06-21 20:09:54,950 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35096153846153844 [2024-06-21 20:09:54,950 INFO L175 Difference]: Start difference. First operand has 402 places, 328 transitions, 2893 flow. Second operand 13 states and 146 transitions. [2024-06-21 20:09:54,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 412 places, 357 transitions, 3721 flow [2024-06-21 20:09:56,618 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 400 places, 357 transitions, 3621 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-06-21 20:09:56,621 INFO L231 Difference]: Finished difference. Result has 401 places, 317 transitions, 2802 flow [2024-06-21 20:09:56,621 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2793, PETRI_DIFFERENCE_MINUEND_PLACES=388, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=328, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2802, PETRI_PLACES=401, PETRI_TRANSITIONS=317} [2024-06-21 20:09:56,621 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 370 predicate places. [2024-06-21 20:09:56,622 INFO L495 AbstractCegarLoop]: Abstraction has has 401 places, 317 transitions, 2802 flow [2024-06-21 20:09:56,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 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) [2024-06-21 20:09:56,622 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:09:56,622 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:09:56,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183 [2024-06-21 20:09:56,622 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)] === [2024-06-21 20:09:56,623 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:09:56,623 INFO L85 PathProgramCache]: Analyzing trace with hash -2010956772, now seen corresponding path program 25 times [2024-06-21 20:09:56,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:09:56,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694915835] [2024-06-21 20:09:56,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:09:56,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:09:56,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:09:57,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:09:57,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:09:57,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694915835] [2024-06-21 20:09:57,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694915835] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:09:57,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:09:57,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 20:09:57,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122364147] [2024-06-21 20:09:57,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:09:57,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 20:09:57,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:09:57,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 20:09:57,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-21 20:09:58,117 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:09:58,118 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 401 places, 317 transitions, 2802 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:09:58,118 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:09:58,118 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:09:58,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:09:58,843 INFO L124 PetriNetUnfolderBase]: 1063/2005 cut-off events. [2024-06-21 20:09:58,844 INFO L125 PetriNetUnfolderBase]: For 537629/537629 co-relation queries the response was YES. [2024-06-21 20:09:58,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15523 conditions, 2005 events. 1063/2005 cut-off events. For 537629/537629 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 12199 event pairs, 194 based on Foata normal form. 2/2006 useless extension candidates. Maximal degree in co-relation 15356. Up to 1141 conditions per place. [2024-06-21 20:09:58,878 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 186 selfloop transitions, 158 changer transitions 0/346 dead transitions. [2024-06-21 20:09:58,878 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 404 places, 346 transitions, 4009 flow [2024-06-21 20:09:58,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 20:09:58,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 20:09:58,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 144 transitions. [2024-06-21 20:09:58,879 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-21 20:09:58,879 INFO L175 Difference]: Start difference. First operand has 401 places, 317 transitions, 2802 flow. Second operand 12 states and 144 transitions. [2024-06-21 20:09:58,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 404 places, 346 transitions, 4009 flow [2024-06-21 20:10:00,488 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 391 places, 346 transitions, 3863 flow, removed 17 selfloop flow, removed 13 redundant places. [2024-06-21 20:10:00,492 INFO L231 Difference]: Finished difference. Result has 392 places, 319 transitions, 3114 flow [2024-06-21 20:10:00,492 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2664, PETRI_DIFFERENCE_MINUEND_PLACES=380, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=157, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3114, PETRI_PLACES=392, PETRI_TRANSITIONS=319} [2024-06-21 20:10:00,493 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 361 predicate places. [2024-06-21 20:10:00,493 INFO L495 AbstractCegarLoop]: Abstraction has has 392 places, 319 transitions, 3114 flow [2024-06-21 20:10:00,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:10:00,493 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:10:00,493 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:10:00,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184 [2024-06-21 20:10:00,494 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)] === [2024-06-21 20:10:00,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:10:00,494 INFO L85 PathProgramCache]: Analyzing trace with hash 1521538298, now seen corresponding path program 12 times [2024-06-21 20:10:00,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:10:00,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035824565] [2024-06-21 20:10:00,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:10:00,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:10:00,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:10:02,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:10:02,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:10:02,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035824565] [2024-06-21 20:10:02,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035824565] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:10:02,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:10:02,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-21 20:10:02,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19981074] [2024-06-21 20:10:02,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:10:02,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-21 20:10:02,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:10:02,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-21 20:10:02,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2024-06-21 20:10:02,742 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:10:02,743 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 392 places, 319 transitions, 3114 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 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) [2024-06-21 20:10:02,743 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:10:02,743 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:10:02,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:10:03,813 INFO L124 PetriNetUnfolderBase]: 1065/2015 cut-off events. [2024-06-21 20:10:03,813 INFO L125 PetriNetUnfolderBase]: For 565603/565605 co-relation queries the response was YES. [2024-06-21 20:10:03,832 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15161 conditions, 2015 events. 1065/2015 cut-off events. For 565603/565605 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 12317 event pairs, 192 based on Foata normal form. 10/2024 useless extension candidates. Maximal degree in co-relation 14997. Up to 1197 conditions per place. [2024-06-21 20:10:03,836 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 181 selfloop transitions, 155 changer transitions 11/349 dead transitions. [2024-06-21 20:10:03,836 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 405 places, 349 transitions, 3924 flow [2024-06-21 20:10:03,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-21 20:10:03,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-21 20:10:03,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 158 transitions. [2024-06-21 20:10:03,837 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35267857142857145 [2024-06-21 20:10:03,837 INFO L175 Difference]: Start difference. First operand has 392 places, 319 transitions, 3114 flow. Second operand 14 states and 158 transitions. [2024-06-21 20:10:03,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 405 places, 349 transitions, 3924 flow [2024-06-21 20:10:05,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 397 places, 349 transitions, 3650 flow, removed 31 selfloop flow, removed 8 redundant places. [2024-06-21 20:10:05,773 INFO L231 Difference]: Finished difference. Result has 398 places, 316 transitions, 3132 flow [2024-06-21 20:10:05,773 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2840, PETRI_DIFFERENCE_MINUEND_PLACES=384, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=155, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=3132, PETRI_PLACES=398, PETRI_TRANSITIONS=316} [2024-06-21 20:10:05,774 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 367 predicate places. [2024-06-21 20:10:05,774 INFO L495 AbstractCegarLoop]: Abstraction has has 398 places, 316 transitions, 3132 flow [2024-06-21 20:10:05,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 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) [2024-06-21 20:10:05,774 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:10:05,774 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:10:05,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185 [2024-06-21 20:10:05,774 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)] === [2024-06-21 20:10:05,775 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:10:05,775 INFO L85 PathProgramCache]: Analyzing trace with hash -1441462228, now seen corresponding path program 13 times [2024-06-21 20:10:05,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:10:05,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880515441] [2024-06-21 20:10:05,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:10:05,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:10:05,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:10:07,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:10:07,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:10:07,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880515441] [2024-06-21 20:10:07,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880515441] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:10:07,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:10:07,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 20:10:07,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15469493] [2024-06-21 20:10:07,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:10:07,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 20:10:07,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:10:07,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 20:10:07,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-21 20:10:07,459 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:10:07,459 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 398 places, 316 transitions, 3132 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:10:07,459 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:10:07,459 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:10:07,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:10:08,131 INFO L124 PetriNetUnfolderBase]: 1051/1992 cut-off events. [2024-06-21 20:10:08,132 INFO L125 PetriNetUnfolderBase]: For 552851/552851 co-relation queries the response was YES. [2024-06-21 20:10:08,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15238 conditions, 1992 events. 1051/1992 cut-off events. For 552851/552851 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 12190 event pairs, 338 based on Foata normal form. 8/1999 useless extension candidates. Maximal degree in co-relation 15072. Up to 1799 conditions per place. [2024-06-21 20:10:08,156 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 309 selfloop transitions, 22 changer transitions 8/341 dead transitions. [2024-06-21 20:10:08,156 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 405 places, 341 transitions, 4202 flow [2024-06-21 20:10:08,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:10:08,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:10:08,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-21 20:10:08,157 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3465909090909091 [2024-06-21 20:10:08,157 INFO L175 Difference]: Start difference. First operand has 398 places, 316 transitions, 3132 flow. Second operand 11 states and 122 transitions. [2024-06-21 20:10:08,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 405 places, 341 transitions, 4202 flow [2024-06-21 20:10:10,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 392 places, 341 transitions, 3884 flow, removed 4 selfloop flow, removed 13 redundant places. [2024-06-21 20:10:10,006 INFO L231 Difference]: Finished difference. Result has 393 places, 314 transitions, 2848 flow [2024-06-21 20:10:10,006 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2818, PETRI_DIFFERENCE_MINUEND_PLACES=382, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=316, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2848, PETRI_PLACES=393, PETRI_TRANSITIONS=314} [2024-06-21 20:10:10,006 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 362 predicate places. [2024-06-21 20:10:10,006 INFO L495 AbstractCegarLoop]: Abstraction has has 393 places, 314 transitions, 2848 flow [2024-06-21 20:10:10,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:10:10,006 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:10:10,006 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:10:10,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186 [2024-06-21 20:10:10,007 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)] === [2024-06-21 20:10:10,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:10:10,007 INFO L85 PathProgramCache]: Analyzing trace with hash 607513516, now seen corresponding path program 26 times [2024-06-21 20:10:10,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:10:10,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040470232] [2024-06-21 20:10:10,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:10:10,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:10:10,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:10:11,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:10:11,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:10:11,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040470232] [2024-06-21 20:10:11,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040470232] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:10:11,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:10:11,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-21 20:10:11,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874806499] [2024-06-21 20:10:11,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:10:11,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-21 20:10:11,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:10:11,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-21 20:10:11,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-06-21 20:10:11,646 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:10:11,646 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 393 places, 314 transitions, 2848 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 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) [2024-06-21 20:10:11,646 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:10:11,646 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:10:11,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:10:12,441 INFO L124 PetriNetUnfolderBase]: 1031/1952 cut-off events. [2024-06-21 20:10:12,441 INFO L125 PetriNetUnfolderBase]: For 492007/492007 co-relation queries the response was YES. [2024-06-21 20:10:12,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14809 conditions, 1952 events. 1031/1952 cut-off events. For 492007/492007 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 11852 event pairs, 214 based on Foata normal form. 2/1953 useless extension candidates. Maximal degree in co-relation 14644. Up to 1628 conditions per place. [2024-06-21 20:10:12,468 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 249 selfloop transitions, 86 changer transitions 0/337 dead transitions. [2024-06-21 20:10:12,468 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 401 places, 337 transitions, 3660 flow [2024-06-21 20:10:12,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:10:12,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:10:12,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-21 20:10:12,469 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35795454545454547 [2024-06-21 20:10:12,469 INFO L175 Difference]: Start difference. First operand has 393 places, 314 transitions, 2848 flow. Second operand 11 states and 126 transitions. [2024-06-21 20:10:12,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 401 places, 337 transitions, 3660 flow [2024-06-21 20:10:14,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 390 places, 337 transitions, 3610 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-21 20:10:14,137 INFO L231 Difference]: Finished difference. Result has 391 places, 315 transitions, 3042 flow [2024-06-21 20:10:14,137 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2798, PETRI_DIFFERENCE_MINUEND_PLACES=380, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=314, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3042, PETRI_PLACES=391, PETRI_TRANSITIONS=315} [2024-06-21 20:10:14,137 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 360 predicate places. [2024-06-21 20:10:14,137 INFO L495 AbstractCegarLoop]: Abstraction has has 391 places, 315 transitions, 3042 flow [2024-06-21 20:10:14,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 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) [2024-06-21 20:10:14,137 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:10:14,137 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:10:14,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187 [2024-06-21 20:10:14,137 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)] === [2024-06-21 20:10:14,138 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:10:14,138 INFO L85 PathProgramCache]: Analyzing trace with hash -459285940, now seen corresponding path program 14 times [2024-06-21 20:10:14,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:10:14,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142302357] [2024-06-21 20:10:14,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:10:14,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:10:14,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:10:15,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:10:15,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:10:15,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142302357] [2024-06-21 20:10:15,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142302357] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:10:15,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:10:15,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 20:10:15,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538106293] [2024-06-21 20:10:15,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:10:15,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 20:10:15,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:10:15,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 20:10:15,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-21 20:10:15,480 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:10:15,480 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 391 places, 315 transitions, 3042 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:10:15,480 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:10:15,480 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:10:15,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:10:16,230 INFO L124 PetriNetUnfolderBase]: 1072/2039 cut-off events. [2024-06-21 20:10:16,231 INFO L125 PetriNetUnfolderBase]: For 638610/638610 co-relation queries the response was YES. [2024-06-21 20:10:16,251 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16654 conditions, 2039 events. 1072/2039 cut-off events. For 638610/638610 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 12487 event pairs, 355 based on Foata normal form. 8/2046 useless extension candidates. Maximal degree in co-relation 16490. Up to 1749 conditions per place. [2024-06-21 20:10:16,256 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 310 selfloop transitions, 18 changer transitions 11/341 dead transitions. [2024-06-21 20:10:16,256 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 402 places, 341 transitions, 4110 flow [2024-06-21 20:10:16,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 20:10:16,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 20:10:16,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 127 transitions. [2024-06-21 20:10:16,257 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3307291666666667 [2024-06-21 20:10:16,257 INFO L175 Difference]: Start difference. First operand has 391 places, 315 transitions, 3042 flow. Second operand 12 states and 127 transitions. [2024-06-21 20:10:16,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 402 places, 341 transitions, 4110 flow [2024-06-21 20:10:18,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 393 places, 341 transitions, 3876 flow, removed 32 selfloop flow, removed 9 redundant places. [2024-06-21 20:10:18,151 INFO L231 Difference]: Finished difference. Result has 394 places, 312 transitions, 2828 flow [2024-06-21 20:10:18,151 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2808, PETRI_DIFFERENCE_MINUEND_PLACES=382, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2828, PETRI_PLACES=394, PETRI_TRANSITIONS=312} [2024-06-21 20:10:18,152 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 363 predicate places. [2024-06-21 20:10:18,152 INFO L495 AbstractCegarLoop]: Abstraction has has 394 places, 312 transitions, 2828 flow [2024-06-21 20:10:18,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:10:18,152 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:10:18,152 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:10:18,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188 [2024-06-21 20:10:18,152 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)] === [2024-06-21 20:10:18,152 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:10:18,152 INFO L85 PathProgramCache]: Analyzing trace with hash -1062496402, now seen corresponding path program 27 times [2024-06-21 20:10:18,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:10:18,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858770860] [2024-06-21 20:10:18,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:10:18,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:10:18,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:10:19,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:10:19,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:10:19,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858770860] [2024-06-21 20:10:19,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858770860] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:10:19,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:10:19,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-21 20:10:19,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743303213] [2024-06-21 20:10:19,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:10:19,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-21 20:10:19,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:10:19,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-21 20:10:19,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-06-21 20:10:19,782 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:10:19,782 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 394 places, 312 transitions, 2828 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 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) [2024-06-21 20:10:19,782 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:10:19,782 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:10:19,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:10:20,564 INFO L124 PetriNetUnfolderBase]: 1058/2010 cut-off events. [2024-06-21 20:10:20,564 INFO L125 PetriNetUnfolderBase]: For 592381/592383 co-relation queries the response was YES. [2024-06-21 20:10:20,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16406 conditions, 2010 events. 1058/2010 cut-off events. For 592381/592383 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 12295 event pairs, 275 based on Foata normal form. 2/2011 useless extension candidates. Maximal degree in co-relation 16241. Up to 1795 conditions per place. [2024-06-21 20:10:20,590 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 278 selfloop transitions, 54 changer transitions 0/334 dead transitions. [2024-06-21 20:10:20,590 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 400 places, 334 transitions, 3625 flow [2024-06-21 20:10:20,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:10:20,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:10:20,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-21 20:10:20,591 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3465909090909091 [2024-06-21 20:10:20,591 INFO L175 Difference]: Start difference. First operand has 394 places, 312 transitions, 2828 flow. Second operand 11 states and 122 transitions. [2024-06-21 20:10:20,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 400 places, 334 transitions, 3625 flow [2024-06-21 20:10:22,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 389 places, 334 transitions, 3588 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-21 20:10:22,666 INFO L231 Difference]: Finished difference. Result has 391 places, 315 transitions, 2988 flow [2024-06-21 20:10:22,666 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2791, PETRI_DIFFERENCE_MINUEND_PLACES=379, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2988, PETRI_PLACES=391, PETRI_TRANSITIONS=315} [2024-06-21 20:10:22,666 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 360 predicate places. [2024-06-21 20:10:22,666 INFO L495 AbstractCegarLoop]: Abstraction has has 391 places, 315 transitions, 2988 flow [2024-06-21 20:10:22,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 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) [2024-06-21 20:10:22,666 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:10:22,667 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:10:22,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable189 [2024-06-21 20:10:22,667 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)] === [2024-06-21 20:10:22,667 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:10:22,667 INFO L85 PathProgramCache]: Analyzing trace with hash -2054231566, now seen corresponding path program 28 times [2024-06-21 20:10:22,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:10:22,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763509944] [2024-06-21 20:10:22,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:10:22,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:10:22,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:10:24,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:10:24,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:10:24,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763509944] [2024-06-21 20:10:24,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763509944] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:10:24,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:10:24,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-21 20:10:24,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656923482] [2024-06-21 20:10:24,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:10:24,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-21 20:10:24,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:10:24,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-21 20:10:24,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-06-21 20:10:24,406 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:10:24,407 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 391 places, 315 transitions, 2988 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 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) [2024-06-21 20:10:24,407 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:10:24,407 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:10:24,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:10:25,082 INFO L124 PetriNetUnfolderBase]: 1062/2018 cut-off events. [2024-06-21 20:10:25,082 INFO L125 PetriNetUnfolderBase]: For 578218/578220 co-relation queries the response was YES. [2024-06-21 20:10:25,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16579 conditions, 2018 events. 1062/2018 cut-off events. For 578218/578220 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 12360 event pairs, 281 based on Foata normal form. 2/2019 useless extension candidates. Maximal degree in co-relation 16415. Up to 1843 conditions per place. [2024-06-21 20:10:25,107 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 286 selfloop transitions, 45 changer transitions 0/333 dead transitions. [2024-06-21 20:10:25,107 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 401 places, 333 transitions, 3762 flow [2024-06-21 20:10:25,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:10:25,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:10:25,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 114 transitions. [2024-06-21 20:10:25,108 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32386363636363635 [2024-06-21 20:10:25,108 INFO L175 Difference]: Start difference. First operand has 391 places, 315 transitions, 2988 flow. Second operand 11 states and 114 transitions. [2024-06-21 20:10:25,108 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 401 places, 333 transitions, 3762 flow [2024-06-21 20:10:27,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 393 places, 333 transitions, 3594 flow, removed 33 selfloop flow, removed 8 redundant places. [2024-06-21 20:10:27,391 INFO L231 Difference]: Finished difference. Result has 394 places, 316 transitions, 2986 flow [2024-06-21 20:10:27,392 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2820, PETRI_DIFFERENCE_MINUEND_PLACES=383, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2986, PETRI_PLACES=394, PETRI_TRANSITIONS=316} [2024-06-21 20:10:27,392 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 363 predicate places. [2024-06-21 20:10:27,392 INFO L495 AbstractCegarLoop]: Abstraction has has 394 places, 316 transitions, 2986 flow [2024-06-21 20:10:27,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 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) [2024-06-21 20:10:27,392 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:10:27,392 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:10:27,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190 [2024-06-21 20:10:27,393 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)] === [2024-06-21 20:10:27,393 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:10:27,393 INFO L85 PathProgramCache]: Analyzing trace with hash 1564183964, now seen corresponding path program 15 times [2024-06-21 20:10:27,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:10:27,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377732955] [2024-06-21 20:10:27,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:10:27,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:10:27,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:10:28,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:10:28,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:10:28,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377732955] [2024-06-21 20:10:28,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377732955] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:10:28,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:10:28,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 20:10:28,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393085650] [2024-06-21 20:10:28,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:10:28,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 20:10:28,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:10:28,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 20:10:28,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-21 20:10:29,006 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:10:29,006 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 394 places, 316 transitions, 2986 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:10:29,006 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:10:29,006 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:10:29,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:10:29,728 INFO L124 PetriNetUnfolderBase]: 1046/1989 cut-off events. [2024-06-21 20:10:29,728 INFO L125 PetriNetUnfolderBase]: For 565941/565941 co-relation queries the response was YES. [2024-06-21 20:10:29,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14711 conditions, 1989 events. 1046/1989 cut-off events. For 565941/565941 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 12216 event pairs, 347 based on Foata normal form. 12/2000 useless extension candidates. Maximal degree in co-relation 14546. Up to 1870 conditions per place. [2024-06-21 20:10:29,753 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 307 selfloop transitions, 20 changer transitions 7/336 dead transitions. [2024-06-21 20:10:29,753 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 405 places, 336 transitions, 3734 flow [2024-06-21 20:10:29,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 20:10:29,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 20:10:29,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 122 transitions. [2024-06-21 20:10:29,754 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3177083333333333 [2024-06-21 20:10:29,754 INFO L175 Difference]: Start difference. First operand has 394 places, 316 transitions, 2986 flow. Second operand 12 states and 122 transitions. [2024-06-21 20:10:29,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 405 places, 336 transitions, 3734 flow [2024-06-21 20:10:31,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 396 places, 336 transitions, 3524 flow, removed 61 selfloop flow, removed 9 redundant places. [2024-06-21 20:10:31,603 INFO L231 Difference]: Finished difference. Result has 397 places, 313 transitions, 2801 flow [2024-06-21 20:10:31,603 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2776, PETRI_DIFFERENCE_MINUEND_PLACES=385, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=316, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2801, PETRI_PLACES=397, PETRI_TRANSITIONS=313} [2024-06-21 20:10:31,604 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 366 predicate places. [2024-06-21 20:10:31,604 INFO L495 AbstractCegarLoop]: Abstraction has has 397 places, 313 transitions, 2801 flow [2024-06-21 20:10:31,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:10:31,604 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:10:31,604 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:10:31,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191 [2024-06-21 20:10:31,604 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)] === [2024-06-21 20:10:31,605 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:10:31,605 INFO L85 PathProgramCache]: Analyzing trace with hash -162525686, now seen corresponding path program 29 times [2024-06-21 20:10:31,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:10:31,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831476206] [2024-06-21 20:10:31,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:10:31,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:10:31,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:10:33,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:10:33,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:10:33,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831476206] [2024-06-21 20:10:33,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831476206] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:10:33,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:10:33,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 20:10:33,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004724733] [2024-06-21 20:10:33,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:10:33,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 20:10:33,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:10:33,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 20:10:33,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-21 20:10:33,476 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:10:33,476 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 397 places, 313 transitions, 2801 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:10:33,476 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:10:33,476 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:10:33,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:10:34,294 INFO L124 PetriNetUnfolderBase]: 1023/1940 cut-off events. [2024-06-21 20:10:34,295 INFO L125 PetriNetUnfolderBase]: For 478614/478614 co-relation queries the response was YES. [2024-06-21 20:10:34,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14404 conditions, 1940 events. 1023/1940 cut-off events. For 478614/478614 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 11758 event pairs, 227 based on Foata normal form. 2/1941 useless extension candidates. Maximal degree in co-relation 14238. Up to 1182 conditions per place. [2024-06-21 20:10:34,320 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 200 selfloop transitions, 133 changer transitions 0/335 dead transitions. [2024-06-21 20:10:34,320 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 406 places, 335 transitions, 3609 flow [2024-06-21 20:10:34,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:10:34,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:10:34,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 128 transitions. [2024-06-21 20:10:34,321 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-21 20:10:34,321 INFO L175 Difference]: Start difference. First operand has 397 places, 313 transitions, 2801 flow. Second operand 11 states and 128 transitions. [2024-06-21 20:10:34,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 406 places, 335 transitions, 3609 flow [2024-06-21 20:10:36,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 395 places, 335 transitions, 3561 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-21 20:10:36,089 INFO L231 Difference]: Finished difference. Result has 396 places, 314 transitions, 3097 flow [2024-06-21 20:10:36,090 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2753, PETRI_DIFFERENCE_MINUEND_PLACES=385, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3097, PETRI_PLACES=396, PETRI_TRANSITIONS=314} [2024-06-21 20:10:36,090 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 365 predicate places. [2024-06-21 20:10:36,090 INFO L495 AbstractCegarLoop]: Abstraction has has 396 places, 314 transitions, 3097 flow [2024-06-21 20:10:36,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:10:36,090 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:10:36,090 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:10:36,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192 [2024-06-21 20:10:36,090 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)] === [2024-06-21 20:10:36,090 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:10:36,091 INFO L85 PathProgramCache]: Analyzing trace with hash 1340845672, now seen corresponding path program 30 times [2024-06-21 20:10:36,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:10:36,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301137307] [2024-06-21 20:10:36,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:10:36,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:10:36,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:10:37,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:10:37,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:10:37,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301137307] [2024-06-21 20:10:37,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301137307] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:10:37,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:10:37,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-21 20:10:37,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60194250] [2024-06-21 20:10:37,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:10:37,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-21 20:10:37,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:10:37,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-21 20:10:37,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2024-06-21 20:10:37,912 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:10:37,912 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 396 places, 314 transitions, 3097 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 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) [2024-06-21 20:10:37,912 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:10:37,912 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:10:37,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:10:38,608 INFO L124 PetriNetUnfolderBase]: 1027/1949 cut-off events. [2024-06-21 20:10:38,608 INFO L125 PetriNetUnfolderBase]: For 488875/488877 co-relation queries the response was YES. [2024-06-21 20:10:38,631 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14894 conditions, 1949 events. 1027/1949 cut-off events. For 488875/488877 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 11848 event pairs, 257 based on Foata normal form. 2/1950 useless extension candidates. Maximal degree in co-relation 14727. Up to 1735 conditions per place. [2024-06-21 20:10:38,636 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 277 selfloop transitions, 55 changer transitions 0/334 dead transitions. [2024-06-21 20:10:38,636 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 406 places, 334 transitions, 3889 flow [2024-06-21 20:10:38,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:10:38,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:10:38,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 119 transitions. [2024-06-21 20:10:38,637 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3380681818181818 [2024-06-21 20:10:38,637 INFO L175 Difference]: Start difference. First operand has 396 places, 314 transitions, 3097 flow. Second operand 11 states and 119 transitions. [2024-06-21 20:10:38,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 406 places, 334 transitions, 3889 flow [2024-06-21 20:10:40,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 397 places, 334 transitions, 3555 flow, removed 35 selfloop flow, removed 9 redundant places. [2024-06-21 20:10:40,511 INFO L231 Difference]: Finished difference. Result has 398 places, 315 transitions, 2954 flow [2024-06-21 20:10:40,511 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2763, PETRI_DIFFERENCE_MINUEND_PLACES=387, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=314, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2954, PETRI_PLACES=398, PETRI_TRANSITIONS=315} [2024-06-21 20:10:40,511 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 367 predicate places. [2024-06-21 20:10:40,512 INFO L495 AbstractCegarLoop]: Abstraction has has 398 places, 315 transitions, 2954 flow [2024-06-21 20:10:40,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 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) [2024-06-21 20:10:40,512 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:10:40,512 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:10:40,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable193 [2024-06-21 20:10:40,512 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)] === [2024-06-21 20:10:40,513 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:10:40,513 INFO L85 PathProgramCache]: Analyzing trace with hash 1346567528, now seen corresponding path program 16 times [2024-06-21 20:10:40,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:10:40,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933426832] [2024-06-21 20:10:40,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:10:40,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:10:40,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:10:42,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:10:42,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:10:42,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933426832] [2024-06-21 20:10:42,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933426832] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:10:42,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:10:42,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-21 20:10:42,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582135207] [2024-06-21 20:10:42,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:10:42,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-21 20:10:42,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:10:42,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-21 20:10:42,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-06-21 20:10:42,813 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:10:42,814 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 398 places, 315 transitions, 2954 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 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) [2024-06-21 20:10:42,814 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:10:42,814 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:10:42,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:10:43,731 INFO L124 PetriNetUnfolderBase]: 1059/2021 cut-off events. [2024-06-21 20:10:43,731 INFO L125 PetriNetUnfolderBase]: For 665836/665838 co-relation queries the response was YES. [2024-06-21 20:10:43,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14875 conditions, 2021 events. 1059/2021 cut-off events. For 665836/665838 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 12457 event pairs, 263 based on Foata normal form. 20/2040 useless extension candidates. Maximal degree in co-relation 14707. Up to 1707 conditions per place. [2024-06-21 20:10:43,772 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 269 selfloop transitions, 57 changer transitions 10/338 dead transitions. [2024-06-21 20:10:43,772 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 408 places, 338 transitions, 3718 flow [2024-06-21 20:10:43,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:10:43,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:10:43,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-21 20:10:43,773 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35795454545454547 [2024-06-21 20:10:43,773 INFO L175 Difference]: Start difference. First operand has 398 places, 315 transitions, 2954 flow. Second operand 11 states and 126 transitions. [2024-06-21 20:10:43,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 408 places, 338 transitions, 3718 flow [2024-06-21 20:10:45,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 399 places, 338 transitions, 3539 flow, removed 36 selfloop flow, removed 9 redundant places. [2024-06-21 20:10:45,969 INFO L231 Difference]: Finished difference. Result has 400 places, 309 transitions, 2831 flow [2024-06-21 20:10:45,969 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2775, PETRI_DIFFERENCE_MINUEND_PLACES=389, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2831, PETRI_PLACES=400, PETRI_TRANSITIONS=309} [2024-06-21 20:10:45,969 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 369 predicate places. [2024-06-21 20:10:45,969 INFO L495 AbstractCegarLoop]: Abstraction has has 400 places, 309 transitions, 2831 flow [2024-06-21 20:10:45,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 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) [2024-06-21 20:10:45,970 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:10:45,970 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:10:45,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable194 [2024-06-21 20:10:45,970 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)] === [2024-06-21 20:10:45,970 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:10:45,970 INFO L85 PathProgramCache]: Analyzing trace with hash 1547648842, now seen corresponding path program 31 times [2024-06-21 20:10:45,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:10:45,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033513594] [2024-06-21 20:10:45,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:10:45,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:10:45,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:10:47,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:10:47,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:10:47,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033513594] [2024-06-21 20:10:47,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033513594] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:10:47,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:10:47,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-21 20:10:47,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199246630] [2024-06-21 20:10:47,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:10:47,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-21 20:10:47,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:10:47,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-21 20:10:47,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2024-06-21 20:10:47,645 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:10:47,645 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 400 places, 309 transitions, 2831 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 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) [2024-06-21 20:10:47,645 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:10:47,645 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:10:47,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:10:48,536 INFO L124 PetriNetUnfolderBase]: 1011/1929 cut-off events. [2024-06-21 20:10:48,537 INFO L125 PetriNetUnfolderBase]: For 500339/500341 co-relation queries the response was YES. [2024-06-21 20:10:48,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14548 conditions, 1929 events. 1011/1929 cut-off events. For 500339/500341 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 11766 event pairs, 247 based on Foata normal form. 2/1930 useless extension candidates. Maximal degree in co-relation 14379. Up to 1653 conditions per place. [2024-06-21 20:10:48,562 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 257 selfloop transitions, 71 changer transitions 0/330 dead transitions. [2024-06-21 20:10:48,563 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 408 places, 330 transitions, 3627 flow [2024-06-21 20:10:48,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:10:48,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:10:48,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-21 20:10:48,563 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3522727272727273 [2024-06-21 20:10:48,564 INFO L175 Difference]: Start difference. First operand has 400 places, 309 transitions, 2831 flow. Second operand 11 states and 124 transitions. [2024-06-21 20:10:48,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 408 places, 330 transitions, 3627 flow [2024-06-21 20:10:50,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 395 places, 330 transitions, 3470 flow, removed 2 selfloop flow, removed 13 redundant places. [2024-06-21 20:10:50,452 INFO L231 Difference]: Finished difference. Result has 396 places, 310 transitions, 2898 flow [2024-06-21 20:10:50,452 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2674, PETRI_DIFFERENCE_MINUEND_PLACES=385, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2898, PETRI_PLACES=396, PETRI_TRANSITIONS=310} [2024-06-21 20:10:50,452 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 365 predicate places. [2024-06-21 20:10:50,452 INFO L495 AbstractCegarLoop]: Abstraction has has 396 places, 310 transitions, 2898 flow [2024-06-21 20:10:50,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 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) [2024-06-21 20:10:50,453 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:10:50,453 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:10:50,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195 [2024-06-21 20:10:50,453 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)] === [2024-06-21 20:10:50,453 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:10:50,453 INFO L85 PathProgramCache]: Analyzing trace with hash 1777118286, now seen corresponding path program 17 times [2024-06-21 20:10:50,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:10:50,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902302914] [2024-06-21 20:10:50,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:10:50,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:10:50,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:10:52,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:10:52,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:10:52,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902302914] [2024-06-21 20:10:52,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902302914] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:10:52,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:10:52,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-21 20:10:52,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877959978] [2024-06-21 20:10:52,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:10:52,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-21 20:10:52,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:10:52,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-21 20:10:52,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-06-21 20:10:52,122 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:10:52,122 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 396 places, 310 transitions, 2898 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 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) [2024-06-21 20:10:52,122 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:10:52,122 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:10:52,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:10:52,893 INFO L124 PetriNetUnfolderBase]: 1023/1956 cut-off events. [2024-06-21 20:10:52,894 INFO L125 PetriNetUnfolderBase]: For 550398/550398 co-relation queries the response was YES. [2024-06-21 20:10:52,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14556 conditions, 1956 events. 1023/1956 cut-off events. For 550398/550398 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 11978 event pairs, 335 based on Foata normal form. 8/1963 useless extension candidates. Maximal degree in co-relation 14389. Up to 1777 conditions per place. [2024-06-21 20:10:52,919 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 309 selfloop transitions, 17 changer transitions 8/336 dead transitions. [2024-06-21 20:10:52,919 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 407 places, 336 transitions, 3964 flow [2024-06-21 20:10:52,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 20:10:52,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 20:10:52,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 125 transitions. [2024-06-21 20:10:52,920 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3255208333333333 [2024-06-21 20:10:52,920 INFO L175 Difference]: Start difference. First operand has 396 places, 310 transitions, 2898 flow. Second operand 12 states and 125 transitions. [2024-06-21 20:10:52,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 407 places, 336 transitions, 3964 flow [2024-06-21 20:10:54,606 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 398 places, 336 transitions, 3750 flow, removed 37 selfloop flow, removed 9 redundant places. [2024-06-21 20:10:54,609 INFO L231 Difference]: Finished difference. Result has 399 places, 308 transitions, 2707 flow [2024-06-21 20:10:54,609 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2684, PETRI_DIFFERENCE_MINUEND_PLACES=387, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=293, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2707, PETRI_PLACES=399, PETRI_TRANSITIONS=308} [2024-06-21 20:10:54,610 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 368 predicate places. [2024-06-21 20:10:54,610 INFO L495 AbstractCegarLoop]: Abstraction has has 399 places, 308 transitions, 2707 flow [2024-06-21 20:10:54,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 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) [2024-06-21 20:10:54,610 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:10:54,610 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:10:54,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196 [2024-06-21 20:10:54,610 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)] === [2024-06-21 20:10:54,611 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:10:54,611 INFO L85 PathProgramCache]: Analyzing trace with hash -2081244276, now seen corresponding path program 32 times [2024-06-21 20:10:54,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:10:54,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198616683] [2024-06-21 20:10:54,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:10:54,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:10:54,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:10:56,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:10:56,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:10:56,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198616683] [2024-06-21 20:10:56,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198616683] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:10:56,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:10:56,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 20:10:56,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801895335] [2024-06-21 20:10:56,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:10:56,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 20:10:56,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:10:56,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 20:10:56,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-21 20:10:56,322 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:10:56,322 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 308 transitions, 2707 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:10:56,322 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:10:56,322 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:10:56,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:10:57,065 INFO L124 PetriNetUnfolderBase]: 1003/1916 cut-off events. [2024-06-21 20:10:57,065 INFO L125 PetriNetUnfolderBase]: For 500218/500218 co-relation queries the response was YES. [2024-06-21 20:10:57,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14307 conditions, 1916 events. 1003/1916 cut-off events. For 500218/500218 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 11659 event pairs, 225 based on Foata normal form. 2/1917 useless extension candidates. Maximal degree in co-relation 14139. Up to 1166 conditions per place. [2024-06-21 20:10:57,091 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 200 selfloop transitions, 128 changer transitions 0/330 dead transitions. [2024-06-21 20:10:57,091 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 407 places, 330 transitions, 3509 flow [2024-06-21 20:10:57,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:10:57,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:10:57,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-21 20:10:57,093 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36079545454545453 [2024-06-21 20:10:57,093 INFO L175 Difference]: Start difference. First operand has 399 places, 308 transitions, 2707 flow. Second operand 11 states and 127 transitions. [2024-06-21 20:10:57,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 407 places, 330 transitions, 3509 flow [2024-06-21 20:10:58,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 396 places, 330 transitions, 3474 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-21 20:10:58,876 INFO L231 Difference]: Finished difference. Result has 397 places, 309 transitions, 3012 flow [2024-06-21 20:10:58,877 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2672, PETRI_DIFFERENCE_MINUEND_PLACES=386, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3012, PETRI_PLACES=397, PETRI_TRANSITIONS=309} [2024-06-21 20:10:58,877 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 366 predicate places. [2024-06-21 20:10:58,877 INFO L495 AbstractCegarLoop]: Abstraction has has 397 places, 309 transitions, 3012 flow [2024-06-21 20:10:58,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:10:58,878 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:10:58,878 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:10:58,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197 [2024-06-21 20:10:58,878 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)] === [2024-06-21 20:10:58,878 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:10:58,878 INFO L85 PathProgramCache]: Analyzing trace with hash -854402672, now seen corresponding path program 33 times [2024-06-21 20:10:58,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:10:58,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932970497] [2024-06-21 20:10:58,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:10:58,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:10:58,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:11:00,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:11:00,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:11:00,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932970497] [2024-06-21 20:11:00,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932970497] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:11:00,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:11:00,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-21 20:11:00,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111411083] [2024-06-21 20:11:00,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:11:00,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-21 20:11:00,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:11:00,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-21 20:11:00,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2024-06-21 20:11:00,807 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:11:00,808 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 397 places, 309 transitions, 3012 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 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) [2024-06-21 20:11:00,808 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:11:00,808 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:11:00,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:11:01,539 INFO L124 PetriNetUnfolderBase]: 1007/1925 cut-off events. [2024-06-21 20:11:01,539 INFO L125 PetriNetUnfolderBase]: For 497054/497056 co-relation queries the response was YES. [2024-06-21 20:11:01,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14729 conditions, 1925 events. 1007/1925 cut-off events. For 497054/497056 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 11735 event pairs, 247 based on Foata normal form. 2/1926 useless extension candidates. Maximal degree in co-relation 14562. Up to 1676 conditions per place. [2024-06-21 20:11:01,563 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 263 selfloop transitions, 65 changer transitions 0/330 dead transitions. [2024-06-21 20:11:01,563 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 407 places, 330 transitions, 3810 flow [2024-06-21 20:11:01,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:11:01,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:11:01,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-21 20:11:01,564 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3465909090909091 [2024-06-21 20:11:01,564 INFO L175 Difference]: Start difference. First operand has 397 places, 309 transitions, 3012 flow. Second operand 11 states and 122 transitions. [2024-06-21 20:11:01,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 407 places, 330 transitions, 3810 flow [2024-06-21 20:11:03,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 398 places, 330 transitions, 3480 flow, removed 38 selfloop flow, removed 9 redundant places. [2024-06-21 20:11:03,543 INFO L231 Difference]: Finished difference. Result has 399 places, 310 transitions, 2900 flow [2024-06-21 20:11:03,543 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2682, PETRI_DIFFERENCE_MINUEND_PLACES=388, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2900, PETRI_PLACES=399, PETRI_TRANSITIONS=310} [2024-06-21 20:11:03,543 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 368 predicate places. [2024-06-21 20:11:03,543 INFO L495 AbstractCegarLoop]: Abstraction has has 399 places, 310 transitions, 2900 flow [2024-06-21 20:11:03,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 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) [2024-06-21 20:11:03,544 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:11:03,544 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:11:03,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable198 [2024-06-21 20:11:03,544 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)] === [2024-06-21 20:11:03,544 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:11:03,544 INFO L85 PathProgramCache]: Analyzing trace with hash 777819386, now seen corresponding path program 18 times [2024-06-21 20:11:03,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:11:03,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626158944] [2024-06-21 20:11:03,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:11:03,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:11:03,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:11:05,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:11:05,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:11:05,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626158944] [2024-06-21 20:11:05,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626158944] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:11:05,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:11:05,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-21 20:11:05,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319712503] [2024-06-21 20:11:05,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:11:05,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-21 20:11:05,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:11:05,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-21 20:11:05,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-06-21 20:11:05,322 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:11:05,322 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 310 transitions, 2900 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 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) [2024-06-21 20:11:05,322 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:11:05,322 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:11:05,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:11:06,170 INFO L124 PetriNetUnfolderBase]: 1010/1938 cut-off events. [2024-06-21 20:11:06,170 INFO L125 PetriNetUnfolderBase]: For 578812/578814 co-relation queries the response was YES. [2024-06-21 20:11:06,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13142 conditions, 1938 events. 1010/1938 cut-off events. For 578812/578814 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 11886 event pairs, 234 based on Foata normal form. 20/1957 useless extension candidates. Maximal degree in co-relation 12974. Up to 1548 conditions per place. [2024-06-21 20:11:06,195 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 250 selfloop transitions, 62 changer transitions 22/336 dead transitions. [2024-06-21 20:11:06,196 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 410 places, 336 transitions, 3672 flow [2024-06-21 20:11:06,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 20:11:06,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 20:11:06,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 138 transitions. [2024-06-21 20:11:06,196 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.359375 [2024-06-21 20:11:06,196 INFO L175 Difference]: Start difference. First operand has 399 places, 310 transitions, 2900 flow. Second operand 12 states and 138 transitions. [2024-06-21 20:11:06,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 410 places, 336 transitions, 3672 flow [2024-06-21 20:11:07,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 401 places, 336 transitions, 3466 flow, removed 40 selfloop flow, removed 9 redundant places. [2024-06-21 20:11:07,826 INFO L231 Difference]: Finished difference. Result has 402 places, 298 transitions, 2711 flow [2024-06-21 20:11:07,826 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2694, PETRI_DIFFERENCE_MINUEND_PLACES=390, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2711, PETRI_PLACES=402, PETRI_TRANSITIONS=298} [2024-06-21 20:11:07,826 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 371 predicate places. [2024-06-21 20:11:07,826 INFO L495 AbstractCegarLoop]: Abstraction has has 402 places, 298 transitions, 2711 flow [2024-06-21 20:11:07,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 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) [2024-06-21 20:11:07,826 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:11:07,826 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:11:07,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable199 [2024-06-21 20:11:07,827 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)] === [2024-06-21 20:11:07,827 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:11:07,827 INFO L85 PathProgramCache]: Analyzing trace with hash -466075034, now seen corresponding path program 19 times [2024-06-21 20:11:07,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:11:07,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930217925] [2024-06-21 20:11:07,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:11:07,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:11:07,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:11:09,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:11:09,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:11:09,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930217925] [2024-06-21 20:11:09,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930217925] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:11:09,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:11:09,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-21 20:11:09,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65094675] [2024-06-21 20:11:09,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:11:09,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-21 20:11:09,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:11:09,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-21 20:11:09,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-06-21 20:11:09,679 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:11:09,679 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 402 places, 298 transitions, 2711 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 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) [2024-06-21 20:11:09,679 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:11:09,679 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:11:09,680 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:11:10,588 INFO L124 PetriNetUnfolderBase]: 940/1811 cut-off events. [2024-06-21 20:11:10,588 INFO L125 PetriNetUnfolderBase]: For 440401/440401 co-relation queries the response was YES. [2024-06-21 20:11:10,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11872 conditions, 1811 events. 940/1811 cut-off events. For 440401/440401 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 10993 event pairs, 312 based on Foata normal form. 10/1820 useless extension candidates. Maximal degree in co-relation 11703. Up to 1707 conditions per place. [2024-06-21 20:11:10,606 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 289 selfloop transitions, 15 changer transitions 13/319 dead transitions. [2024-06-21 20:11:10,606 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 405 places, 319 transitions, 3427 flow [2024-06-21 20:11:10,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-21 20:11:10,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-21 20:11:10,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 125 transitions. [2024-06-21 20:11:10,607 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3004807692307692 [2024-06-21 20:11:10,607 INFO L175 Difference]: Start difference. First operand has 402 places, 298 transitions, 2711 flow. Second operand 13 states and 125 transitions. [2024-06-21 20:11:10,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 405 places, 319 transitions, 3427 flow [2024-06-21 20:11:11,956 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 393 places, 319 transitions, 3293 flow, removed 5 selfloop flow, removed 12 redundant places. [2024-06-21 20:11:11,958 INFO L231 Difference]: Finished difference. Result has 394 places, 293 transitions, 2577 flow [2024-06-21 20:11:11,959 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2577, PETRI_DIFFERENCE_MINUEND_PLACES=381, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2577, PETRI_PLACES=394, PETRI_TRANSITIONS=293} [2024-06-21 20:11:11,959 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 363 predicate places. [2024-06-21 20:11:11,959 INFO L495 AbstractCegarLoop]: Abstraction has has 394 places, 293 transitions, 2577 flow [2024-06-21 20:11:11,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 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) [2024-06-21 20:11:11,959 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:11:11,959 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:11:11,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable200 [2024-06-21 20:11:11,959 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)] === [2024-06-21 20:11:11,959 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:11:11,960 INFO L85 PathProgramCache]: Analyzing trace with hash 2014426810, now seen corresponding path program 34 times [2024-06-21 20:11:11,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:11:11,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237481052] [2024-06-21 20:11:11,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:11:11,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:11:11,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:11:13,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:11:13,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:11:13,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237481052] [2024-06-21 20:11:13,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237481052] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:11:13,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:11:13,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-21 20:11:13,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655438626] [2024-06-21 20:11:13,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:11:13,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-21 20:11:13,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:11:13,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-21 20:11:13,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-06-21 20:11:13,525 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:11:13,525 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 394 places, 293 transitions, 2577 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 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) [2024-06-21 20:11:13,526 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:11:13,526 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:11:13,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:11:14,355 INFO L124 PetriNetUnfolderBase]: 912/1760 cut-off events. [2024-06-21 20:11:14,356 INFO L125 PetriNetUnfolderBase]: For 349571/349573 co-relation queries the response was YES. [2024-06-21 20:11:14,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11584 conditions, 1760 events. 912/1760 cut-off events. For 349571/349573 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 10664 event pairs, 188 based on Foata normal form. 2/1761 useless extension candidates. Maximal degree in co-relation 11418. Up to 1471 conditions per place. [2024-06-21 20:11:14,374 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 233 selfloop transitions, 78 changer transitions 0/313 dead transitions. [2024-06-21 20:11:14,374 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 400 places, 313 transitions, 3337 flow [2024-06-21 20:11:14,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:11:14,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:11:14,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-21 20:11:14,375 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3409090909090909 [2024-06-21 20:11:14,375 INFO L175 Difference]: Start difference. First operand has 394 places, 293 transitions, 2577 flow. Second operand 11 states and 120 transitions. [2024-06-21 20:11:14,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 400 places, 313 transitions, 3337 flow [2024-06-21 20:11:15,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 387 places, 313 transitions, 3299 flow, removed 3 selfloop flow, removed 13 redundant places. [2024-06-21 20:11:15,741 INFO L231 Difference]: Finished difference. Result has 388 places, 294 transitions, 2779 flow [2024-06-21 20:11:15,741 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2539, PETRI_DIFFERENCE_MINUEND_PLACES=377, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2779, PETRI_PLACES=388, PETRI_TRANSITIONS=294} [2024-06-21 20:11:15,742 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 357 predicate places. [2024-06-21 20:11:15,742 INFO L495 AbstractCegarLoop]: Abstraction has has 388 places, 294 transitions, 2779 flow [2024-06-21 20:11:15,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 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) [2024-06-21 20:11:15,742 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:11:15,742 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:11:15,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable201 [2024-06-21 20:11:15,742 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)] === [2024-06-21 20:11:15,742 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:11:15,742 INFO L85 PathProgramCache]: Analyzing trace with hash -173337328, now seen corresponding path program 20 times [2024-06-21 20:11:15,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:11:15,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414228699] [2024-06-21 20:11:15,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:11:15,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:11:15,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:11:17,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:11:17,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:11:17,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414228699] [2024-06-21 20:11:17,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414228699] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:11:17,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:11:17,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-21 20:11:17,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588524721] [2024-06-21 20:11:17,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:11:17,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-21 20:11:17,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:11:17,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-21 20:11:17,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-21 20:11:17,714 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:11:17,715 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 388 places, 294 transitions, 2779 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 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) [2024-06-21 20:11:17,715 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:11:17,715 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:11:17,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:11:18,527 INFO L124 PetriNetUnfolderBase]: 953/1847 cut-off events. [2024-06-21 20:11:18,527 INFO L125 PetriNetUnfolderBase]: For 484706/484708 co-relation queries the response was YES. [2024-06-21 20:11:18,545 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13354 conditions, 1847 events. 953/1847 cut-off events. For 484706/484708 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 11260 event pairs, 197 based on Foata normal form. 8/1854 useless extension candidates. Maximal degree in co-relation 13190. Up to 1341 conditions per place. [2024-06-21 20:11:18,549 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 224 selfloop transitions, 91 changer transitions 8/325 dead transitions. [2024-06-21 20:11:18,549 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 398 places, 325 transitions, 3841 flow [2024-06-21 20:11:18,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:11:18,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:11:18,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-21 20:11:18,550 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835227272727273 [2024-06-21 20:11:18,550 INFO L175 Difference]: Start difference. First operand has 388 places, 294 transitions, 2779 flow. Second operand 11 states and 135 transitions. [2024-06-21 20:11:18,550 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 398 places, 325 transitions, 3841 flow [2024-06-21 20:11:20,048 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 389 places, 325 transitions, 3611 flow, removed 38 selfloop flow, removed 9 redundant places. [2024-06-21 20:11:20,051 INFO L231 Difference]: Finished difference. Result has 390 places, 292 transitions, 2721 flow [2024-06-21 20:11:20,051 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2549, PETRI_DIFFERENCE_MINUEND_PLACES=379, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2721, PETRI_PLACES=390, PETRI_TRANSITIONS=292} [2024-06-21 20:11:20,051 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 359 predicate places. [2024-06-21 20:11:20,051 INFO L495 AbstractCegarLoop]: Abstraction has has 390 places, 292 transitions, 2721 flow [2024-06-21 20:11:20,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 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) [2024-06-21 20:11:20,052 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:11:20,052 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:11:20,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable202 [2024-06-21 20:11:20,052 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)] === [2024-06-21 20:11:20,052 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:11:20,052 INFO L85 PathProgramCache]: Analyzing trace with hash 1547916248, now seen corresponding path program 21 times [2024-06-21 20:11:20,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:11:20,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785887225] [2024-06-21 20:11:20,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:11:20,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:11:20,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:11:22,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:11:22,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:11:22,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785887225] [2024-06-21 20:11:22,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785887225] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:11:22,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:11:22,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-21 20:11:22,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63354874] [2024-06-21 20:11:22,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:11:22,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-21 20:11:22,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:11:22,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-21 20:11:22,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-06-21 20:11:22,320 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:11:22,321 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 390 places, 292 transitions, 2721 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 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) [2024-06-21 20:11:22,321 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:11:22,321 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:11:22,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:11:23,178 INFO L124 PetriNetUnfolderBase]: 945/1835 cut-off events. [2024-06-21 20:11:23,178 INFO L125 PetriNetUnfolderBase]: For 507837/507839 co-relation queries the response was YES. [2024-06-21 20:11:23,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13245 conditions, 1835 events. 945/1835 cut-off events. For 507837/507839 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 11187 event pairs, 239 based on Foata normal form. 10/1844 useless extension candidates. Maximal degree in co-relation 13080. Up to 1522 conditions per place. [2024-06-21 20:11:23,201 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 239 selfloop transitions, 66 changer transitions 11/318 dead transitions. [2024-06-21 20:11:23,201 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 399 places, 318 transitions, 3457 flow [2024-06-21 20:11:23,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 20:11:23,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 20:11:23,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 137 transitions. [2024-06-21 20:11:23,202 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3567708333333333 [2024-06-21 20:11:23,202 INFO L175 Difference]: Start difference. First operand has 390 places, 292 transitions, 2721 flow. Second operand 12 states and 137 transitions. [2024-06-21 20:11:23,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 399 places, 318 transitions, 3457 flow [2024-06-21 20:11:24,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 388 places, 318 transitions, 3271 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-21 20:11:24,799 INFO L231 Difference]: Finished difference. Result has 389 places, 289 transitions, 2649 flow [2024-06-21 20:11:24,799 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2535, PETRI_DIFFERENCE_MINUEND_PLACES=377, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2649, PETRI_PLACES=389, PETRI_TRANSITIONS=289} [2024-06-21 20:11:24,800 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 358 predicate places. [2024-06-21 20:11:24,800 INFO L495 AbstractCegarLoop]: Abstraction has has 389 places, 289 transitions, 2649 flow [2024-06-21 20:11:24,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 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) [2024-06-21 20:11:24,800 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:11:24,800 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:11:24,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable203 [2024-06-21 20:11:24,800 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)] === [2024-06-21 20:11:24,801 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:11:24,801 INFO L85 PathProgramCache]: Analyzing trace with hash 1547925548, now seen corresponding path program 22 times [2024-06-21 20:11:24,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:11:24,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359287206] [2024-06-21 20:11:24,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:11:24,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:11:24,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:11:26,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:11:26,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:11:26,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359287206] [2024-06-21 20:11:26,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359287206] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:11:26,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:11:26,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-21 20:11:26,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402906890] [2024-06-21 20:11:26,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:11:26,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-21 20:11:26,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:11:26,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-21 20:11:26,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-06-21 20:11:26,812 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:11:26,812 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 389 places, 289 transitions, 2649 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 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) [2024-06-21 20:11:26,812 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:11:26,812 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:11:26,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:11:27,708 INFO L124 PetriNetUnfolderBase]: 933/1815 cut-off events. [2024-06-21 20:11:27,708 INFO L125 PetriNetUnfolderBase]: For 483726/483728 co-relation queries the response was YES. [2024-06-21 20:11:27,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13048 conditions, 1815 events. 933/1815 cut-off events. For 483726/483728 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 11079 event pairs, 231 based on Foata normal form. 8/1822 useless extension candidates. Maximal degree in co-relation 12884. Up to 1415 conditions per place. [2024-06-21 20:11:27,731 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 245 selfloop transitions, 64 changer transitions 8/319 dead transitions. [2024-06-21 20:11:27,731 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 398 places, 319 transitions, 3687 flow [2024-06-21 20:11:27,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 20:11:27,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 20:11:27,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 140 transitions. [2024-06-21 20:11:27,732 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3645833333333333 [2024-06-21 20:11:27,732 INFO L175 Difference]: Start difference. First operand has 389 places, 289 transitions, 2649 flow. Second operand 12 states and 140 transitions. [2024-06-21 20:11:27,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 398 places, 319 transitions, 3687 flow [2024-06-21 20:11:29,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 386 places, 319 transitions, 3532 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-06-21 20:11:29,383 INFO L231 Difference]: Finished difference. Result has 387 places, 286 transitions, 2608 flow [2024-06-21 20:11:29,383 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2496, PETRI_DIFFERENCE_MINUEND_PLACES=375, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=289, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2608, PETRI_PLACES=387, PETRI_TRANSITIONS=286} [2024-06-21 20:11:29,383 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 356 predicate places. [2024-06-21 20:11:29,383 INFO L495 AbstractCegarLoop]: Abstraction has has 387 places, 286 transitions, 2608 flow [2024-06-21 20:11:29,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 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) [2024-06-21 20:11:29,383 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:11:29,384 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:11:29,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable204 [2024-06-21 20:11:29,384 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)] === [2024-06-21 20:11:29,384 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:11:29,384 INFO L85 PathProgramCache]: Analyzing trace with hash -2073619640, now seen corresponding path program 23 times [2024-06-21 20:11:29,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:11:29,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801772494] [2024-06-21 20:11:29,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:11:29,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:11:29,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:11:31,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:11:31,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:11:31,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801772494] [2024-06-21 20:11:31,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801772494] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:11:31,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:11:31,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-21 20:11:31,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662689581] [2024-06-21 20:11:31,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:11:31,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-21 20:11:31,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:11:31,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-21 20:11:31,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-21 20:11:31,251 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:11:31,252 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 387 places, 286 transitions, 2608 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 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) [2024-06-21 20:11:31,252 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:11:31,252 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:11:31,252 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:11:32,125 INFO L124 PetriNetUnfolderBase]: 930/1810 cut-off events. [2024-06-21 20:11:32,126 INFO L125 PetriNetUnfolderBase]: For 500406/500408 co-relation queries the response was YES. [2024-06-21 20:11:32,144 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13002 conditions, 1810 events. 930/1810 cut-off events. For 500406/500408 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 11030 event pairs, 203 based on Foata normal form. 10/1819 useless extension candidates. Maximal degree in co-relation 12838. Up to 1411 conditions per place. [2024-06-21 20:11:32,148 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 211 selfloop transitions, 89 changer transitions 13/315 dead transitions. [2024-06-21 20:11:32,148 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 395 places, 315 transitions, 3356 flow [2024-06-21 20:11:32,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 20:11:32,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 20:11:32,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 140 transitions. [2024-06-21 20:11:32,149 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3645833333333333 [2024-06-21 20:11:32,149 INFO L175 Difference]: Start difference. First operand has 387 places, 286 transitions, 2608 flow. Second operand 12 states and 140 transitions. [2024-06-21 20:11:32,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 395 places, 315 transitions, 3356 flow [2024-06-21 20:11:33,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 383 places, 315 transitions, 3228 flow, removed 3 selfloop flow, removed 12 redundant places. [2024-06-21 20:11:33,523 INFO L231 Difference]: Finished difference. Result has 384 places, 282 transitions, 2636 flow [2024-06-21 20:11:33,524 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2480, PETRI_DIFFERENCE_MINUEND_PLACES=372, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2636, PETRI_PLACES=384, PETRI_TRANSITIONS=282} [2024-06-21 20:11:33,524 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 353 predicate places. [2024-06-21 20:11:33,524 INFO L495 AbstractCegarLoop]: Abstraction has has 384 places, 282 transitions, 2636 flow [2024-06-21 20:11:33,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 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) [2024-06-21 20:11:33,524 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:11:33,524 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:11:33,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable205 [2024-06-21 20:11:33,525 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)] === [2024-06-21 20:11:33,525 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:11:33,526 INFO L85 PathProgramCache]: Analyzing trace with hash 1547656778, now seen corresponding path program 24 times [2024-06-21 20:11:33,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:11:33,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362604984] [2024-06-21 20:11:33,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:11:33,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:11:33,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:11:35,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:11:35,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:11:35,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362604984] [2024-06-21 20:11:35,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362604984] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:11:35,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:11:35,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-21 20:11:35,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128830042] [2024-06-21 20:11:35,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:11:35,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-21 20:11:35,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:11:35,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-21 20:11:35,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-06-21 20:11:35,814 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:11:35,814 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 384 places, 282 transitions, 2636 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 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) [2024-06-21 20:11:35,814 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:11:35,814 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:11:35,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:11:36,535 INFO L124 PetriNetUnfolderBase]: 904/1764 cut-off events. [2024-06-21 20:11:36,535 INFO L125 PetriNetUnfolderBase]: For 451622/451624 co-relation queries the response was YES. [2024-06-21 20:11:36,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12274 conditions, 1764 events. 904/1764 cut-off events. For 451622/451624 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 10717 event pairs, 231 based on Foata normal form. 10/1773 useless extension candidates. Maximal degree in co-relation 12112. Up to 1454 conditions per place. [2024-06-21 20:11:36,557 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 234 selfloop transitions, 63 changer transitions 9/308 dead transitions. [2024-06-21 20:11:36,557 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 391 places, 308 transitions, 3352 flow [2024-06-21 20:11:36,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 20:11:36,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 20:11:36,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 136 transitions. [2024-06-21 20:11:36,558 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3541666666666667 [2024-06-21 20:11:36,558 INFO L175 Difference]: Start difference. First operand has 384 places, 282 transitions, 2636 flow. Second operand 12 states and 136 transitions. [2024-06-21 20:11:36,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 391 places, 308 transitions, 3352 flow [2024-06-21 20:11:37,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 379 places, 308 transitions, 3168 flow, removed 3 selfloop flow, removed 12 redundant places. [2024-06-21 20:11:37,947 INFO L231 Difference]: Finished difference. Result has 380 places, 279 transitions, 2562 flow [2024-06-21 20:11:37,948 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2452, PETRI_DIFFERENCE_MINUEND_PLACES=368, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2562, PETRI_PLACES=380, PETRI_TRANSITIONS=279} [2024-06-21 20:11:37,948 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 349 predicate places. [2024-06-21 20:11:37,948 INFO L495 AbstractCegarLoop]: Abstraction has has 380 places, 279 transitions, 2562 flow [2024-06-21 20:11:37,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 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) [2024-06-21 20:11:37,948 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:11:37,948 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:11:37,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable206 [2024-06-21 20:11:37,948 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)] === [2024-06-21 20:11:37,948 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:11:37,948 INFO L85 PathProgramCache]: Analyzing trace with hash -173606098, now seen corresponding path program 25 times [2024-06-21 20:11:37,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:11:37,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575106525] [2024-06-21 20:11:37,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:11:37,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:11:37,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:11:39,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:11:39,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:11:39,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575106525] [2024-06-21 20:11:39,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575106525] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:11:39,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:11:39,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-21 20:11:39,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409506579] [2024-06-21 20:11:39,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:11:39,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-21 20:11:39,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:11:39,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-21 20:11:39,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-21 20:11:40,086 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:11:40,086 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 279 transitions, 2562 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 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) [2024-06-21 20:11:40,086 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:11:40,086 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:11:40,086 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:11:41,102 INFO L124 PetriNetUnfolderBase]: 894/1750 cut-off events. [2024-06-21 20:11:41,102 INFO L125 PetriNetUnfolderBase]: For 438434/438436 co-relation queries the response was YES. [2024-06-21 20:11:41,121 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12052 conditions, 1750 events. 894/1750 cut-off events. For 438434/438436 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 10643 event pairs, 195 based on Foata normal form. 10/1759 useless extension candidates. Maximal degree in co-relation 11892. Up to 1365 conditions per place. [2024-06-21 20:11:41,126 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 209 selfloop transitions, 85 changer transitions 11/307 dead transitions. [2024-06-21 20:11:41,126 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 389 places, 307 transitions, 3288 flow [2024-06-21 20:11:41,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 20:11:41,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 20:11:41,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 139 transitions. [2024-06-21 20:11:41,127 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3619791666666667 [2024-06-21 20:11:41,127 INFO L175 Difference]: Start difference. First operand has 380 places, 279 transitions, 2562 flow. Second operand 12 states and 139 transitions. [2024-06-21 20:11:41,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 389 places, 307 transitions, 3288 flow [2024-06-21 20:11:42,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 377 places, 307 transitions, 3156 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-06-21 20:11:42,428 INFO L231 Difference]: Finished difference. Result has 378 places, 276 transitions, 2584 flow [2024-06-21 20:11:42,428 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2430, PETRI_DIFFERENCE_MINUEND_PLACES=366, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2584, PETRI_PLACES=378, PETRI_TRANSITIONS=276} [2024-06-21 20:11:42,428 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 347 predicate places. [2024-06-21 20:11:42,428 INFO L495 AbstractCegarLoop]: Abstraction has has 378 places, 276 transitions, 2584 flow [2024-06-21 20:11:42,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 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) [2024-06-21 20:11:42,428 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:11:42,429 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:11:42,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable207 [2024-06-21 20:11:42,429 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)] === [2024-06-21 20:11:42,429 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:11:42,429 INFO L85 PathProgramCache]: Analyzing trace with hash -180755938, now seen corresponding path program 26 times [2024-06-21 20:11:42,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:11:42,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398037146] [2024-06-21 20:11:42,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:11:42,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:11:42,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:11:44,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:11:44,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:11:44,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398037146] [2024-06-21 20:11:44,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398037146] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:11:44,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:11:44,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-21 20:11:44,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257499997] [2024-06-21 20:11:44,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:11:44,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-21 20:11:44,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:11:44,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-21 20:11:44,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-06-21 20:11:44,181 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:11:44,181 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 378 places, 276 transitions, 2584 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 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) [2024-06-21 20:11:44,181 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:11:44,181 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:11:44,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:11:44,943 INFO L124 PetriNetUnfolderBase]: 884/1736 cut-off events. [2024-06-21 20:11:44,943 INFO L125 PetriNetUnfolderBase]: For 431787/431789 co-relation queries the response was YES. [2024-06-21 20:11:44,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12017 conditions, 1736 events. 884/1736 cut-off events. For 431787/431789 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 10559 event pairs, 191 based on Foata normal form. 10/1745 useless extension candidates. Maximal degree in co-relation 11858. Up to 1357 conditions per place. [2024-06-21 20:11:44,964 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 206 selfloop transitions, 79 changer transitions 16/303 dead transitions. [2024-06-21 20:11:44,964 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 386 places, 303 transitions, 3296 flow [2024-06-21 20:11:44,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 20:11:44,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 20:11:44,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 138 transitions. [2024-06-21 20:11:44,965 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.359375 [2024-06-21 20:11:44,965 INFO L175 Difference]: Start difference. First operand has 378 places, 276 transitions, 2584 flow. Second operand 12 states and 138 transitions. [2024-06-21 20:11:44,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 386 places, 303 transitions, 3296 flow [2024-06-21 20:11:46,361 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 303 transitions, 3122 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-21 20:11:46,363 INFO L231 Difference]: Finished difference. Result has 376 places, 270 transitions, 2535 flow [2024-06-21 20:11:46,363 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2410, PETRI_DIFFERENCE_MINUEND_PLACES=364, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2535, PETRI_PLACES=376, PETRI_TRANSITIONS=270} [2024-06-21 20:11:46,364 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 345 predicate places. [2024-06-21 20:11:46,364 INFO L495 AbstractCegarLoop]: Abstraction has has 376 places, 270 transitions, 2535 flow [2024-06-21 20:11:46,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 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) [2024-06-21 20:11:46,364 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:11:46,364 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:11:46,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable208 [2024-06-21 20:11:46,364 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)] === [2024-06-21 20:11:46,364 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:11:46,364 INFO L85 PathProgramCache]: Analyzing trace with hash -380273054, now seen corresponding path program 35 times [2024-06-21 20:11:46,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:11:46,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078258007] [2024-06-21 20:11:46,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:11:46,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:11:46,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:11:47,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:11:47,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:11:47,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078258007] [2024-06-21 20:11:47,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078258007] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:11:47,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:11:47,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-21 20:11:47,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967060558] [2024-06-21 20:11:47,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:11:47,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-21 20:11:47,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:11:47,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-21 20:11:47,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-06-21 20:11:48,125 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:11:48,125 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 376 places, 270 transitions, 2535 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 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) [2024-06-21 20:11:48,126 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:11:48,126 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:11:48,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:11:48,729 INFO L124 PetriNetUnfolderBase]: 852/1676 cut-off events. [2024-06-21 20:11:48,730 INFO L125 PetriNetUnfolderBase]: For 362314/362316 co-relation queries the response was YES. [2024-06-21 20:11:48,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11890 conditions, 1676 events. 852/1676 cut-off events. For 362314/362316 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 10144 event pairs, 187 based on Foata normal form. 2/1677 useless extension candidates. Maximal degree in co-relation 11732. Up to 1387 conditions per place. [2024-06-21 20:11:48,751 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 211 selfloop transitions, 77 changer transitions 0/290 dead transitions. [2024-06-21 20:11:48,751 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 380 places, 290 transitions, 3249 flow [2024-06-21 20:11:48,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:11:48,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:11:48,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 119 transitions. [2024-06-21 20:11:48,752 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3380681818181818 [2024-06-21 20:11:48,752 INFO L175 Difference]: Start difference. First operand has 376 places, 270 transitions, 2535 flow. Second operand 11 states and 119 transitions. [2024-06-21 20:11:48,752 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 380 places, 290 transitions, 3249 flow [2024-06-21 20:11:49,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 368 places, 290 transitions, 3079 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-06-21 20:11:49,996 INFO L231 Difference]: Finished difference. Result has 369 places, 271 transitions, 2605 flow [2024-06-21 20:11:49,996 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2367, PETRI_DIFFERENCE_MINUEND_PLACES=358, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2605, PETRI_PLACES=369, PETRI_TRANSITIONS=271} [2024-06-21 20:11:49,996 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 338 predicate places. [2024-06-21 20:11:49,997 INFO L495 AbstractCegarLoop]: Abstraction has has 369 places, 271 transitions, 2605 flow [2024-06-21 20:11:49,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 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) [2024-06-21 20:11:49,997 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:11:49,997 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:11:49,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable209 [2024-06-21 20:11:49,997 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)] === [2024-06-21 20:11:49,997 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:11:49,997 INFO L85 PathProgramCache]: Analyzing trace with hash -380417204, now seen corresponding path program 36 times [2024-06-21 20:11:49,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:11:49,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111242521] [2024-06-21 20:11:49,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:11:49,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:11:50,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:11:51,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:11:51,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:11:51,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111242521] [2024-06-21 20:11:51,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111242521] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:11:51,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:11:51,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 20:11:51,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315881483] [2024-06-21 20:11:51,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:11:51,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 20:11:51,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:11:51,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 20:11:51,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-21 20:11:51,738 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:11:51,738 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 369 places, 271 transitions, 2605 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:11:51,738 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:11:51,738 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:11:51,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:11:52,372 INFO L124 PetriNetUnfolderBase]: 849/1671 cut-off events. [2024-06-21 20:11:52,372 INFO L125 PetriNetUnfolderBase]: For 329964/329966 co-relation queries the response was YES. [2024-06-21 20:11:52,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11425 conditions, 1671 events. 849/1671 cut-off events. For 329964/329966 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 10121 event pairs, 184 based on Foata normal form. 2/1672 useless extension candidates. Maximal degree in co-relation 11270. Up to 1382 conditions per place. [2024-06-21 20:11:52,392 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 212 selfloop transitions, 76 changer transitions 0/290 dead transitions. [2024-06-21 20:11:52,392 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 379 places, 290 transitions, 3237 flow [2024-06-21 20:11:52,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:11:52,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:11:52,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 118 transitions. [2024-06-21 20:11:52,393 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3352272727272727 [2024-06-21 20:11:52,393 INFO L175 Difference]: Start difference. First operand has 369 places, 271 transitions, 2605 flow. Second operand 11 states and 118 transitions. [2024-06-21 20:11:52,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 379 places, 290 transitions, 3237 flow [2024-06-21 20:11:53,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 370 places, 290 transitions, 3009 flow, removed 38 selfloop flow, removed 9 redundant places. [2024-06-21 20:11:53,733 INFO L231 Difference]: Finished difference. Result has 371 places, 271 transitions, 2533 flow [2024-06-21 20:11:53,733 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2377, PETRI_DIFFERENCE_MINUEND_PLACES=360, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2533, PETRI_PLACES=371, PETRI_TRANSITIONS=271} [2024-06-21 20:11:53,734 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 340 predicate places. [2024-06-21 20:11:53,734 INFO L495 AbstractCegarLoop]: Abstraction has has 371 places, 271 transitions, 2533 flow [2024-06-21 20:11:53,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:11:53,734 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:11:53,734 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:11:53,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable210 [2024-06-21 20:11:53,734 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)] === [2024-06-21 20:11:53,734 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:11:53,734 INFO L85 PathProgramCache]: Analyzing trace with hash 2019998936, now seen corresponding path program 27 times [2024-06-21 20:11:53,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:11:53,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831154180] [2024-06-21 20:11:53,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:11:53,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:11:53,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:11:55,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:11:55,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:11:55,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831154180] [2024-06-21 20:11:55,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831154180] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:11:55,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:11:55,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-21 20:11:55,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478753644] [2024-06-21 20:11:55,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:11:55,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-21 20:11:55,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:11:55,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-21 20:11:55,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-06-21 20:11:55,335 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:11:55,335 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 371 places, 271 transitions, 2533 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 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) [2024-06-21 20:11:55,335 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:11:55,335 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:11:55,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:11:56,065 INFO L124 PetriNetUnfolderBase]: 851/1681 cut-off events. [2024-06-21 20:11:56,065 INFO L125 PetriNetUnfolderBase]: For 363170/363172 co-relation queries the response was YES. [2024-06-21 20:11:56,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10812 conditions, 1681 events. 851/1681 cut-off events. For 363170/363172 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 10216 event pairs, 190 based on Foata normal form. 10/1690 useless extension candidates. Maximal degree in co-relation 10656. Up to 1338 conditions per place. [2024-06-21 20:11:56,084 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 204 selfloop transitions, 74 changer transitions 16/296 dead transitions. [2024-06-21 20:11:56,084 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 382 places, 296 transitions, 3221 flow [2024-06-21 20:11:56,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 20:11:56,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 20:11:56,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 133 transitions. [2024-06-21 20:11:56,085 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3463541666666667 [2024-06-21 20:11:56,085 INFO L175 Difference]: Start difference. First operand has 371 places, 271 transitions, 2533 flow. Second operand 12 states and 133 transitions. [2024-06-21 20:11:56,085 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 382 places, 296 transitions, 3221 flow [2024-06-21 20:11:57,464 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 296 transitions, 2847 flow, removed 39 selfloop flow, removed 11 redundant places. [2024-06-21 20:11:57,467 INFO L231 Difference]: Finished difference. Result has 372 places, 265 transitions, 2280 flow [2024-06-21 20:11:57,467 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2159, PETRI_DIFFERENCE_MINUEND_PLACES=360, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2280, PETRI_PLACES=372, PETRI_TRANSITIONS=265} [2024-06-21 20:11:57,468 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 341 predicate places. [2024-06-21 20:11:57,468 INFO L495 AbstractCegarLoop]: Abstraction has has 372 places, 265 transitions, 2280 flow [2024-06-21 20:11:57,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 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) [2024-06-21 20:11:57,468 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:11:57,468 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:11:57,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable211 [2024-06-21 20:11:57,469 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)] === [2024-06-21 20:11:57,469 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:11:57,469 INFO L85 PathProgramCache]: Analyzing trace with hash 1736565086, now seen corresponding path program 28 times [2024-06-21 20:11:57,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:11:57,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457690276] [2024-06-21 20:11:57,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:11:57,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:11:57,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:11:59,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:11:59,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:11:59,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457690276] [2024-06-21 20:11:59,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457690276] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:11:59,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:11:59,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-21 20:11:59,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626636299] [2024-06-21 20:11:59,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:11:59,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-21 20:11:59,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:11:59,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-21 20:11:59,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-06-21 20:11:59,803 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:11:59,803 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 372 places, 265 transitions, 2280 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 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) [2024-06-21 20:11:59,803 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:11:59,803 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:11:59,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:12:00,756 INFO L124 PetriNetUnfolderBase]: 824/1635 cut-off events. [2024-06-21 20:12:00,756 INFO L125 PetriNetUnfolderBase]: For 349111/349111 co-relation queries the response was YES. [2024-06-21 20:12:00,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9992 conditions, 1635 events. 824/1635 cut-off events. For 349111/349111 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 9946 event pairs, 198 based on Foata normal form. 10/1644 useless extension candidates. Maximal degree in co-relation 9836. Up to 1383 conditions per place. [2024-06-21 20:12:00,771 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 230 selfloop transitions, 55 changer transitions 11/298 dead transitions. [2024-06-21 20:12:00,771 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 378 places, 298 transitions, 3006 flow [2024-06-21 20:12:00,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-21 20:12:00,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-21 20:12:00,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 145 transitions. [2024-06-21 20:12:00,772 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3485576923076923 [2024-06-21 20:12:00,772 INFO L175 Difference]: Start difference. First operand has 372 places, 265 transitions, 2280 flow. Second operand 13 states and 145 transitions. [2024-06-21 20:12:00,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 378 places, 298 transitions, 3006 flow [2024-06-21 20:12:01,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 366 places, 298 transitions, 2850 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-21 20:12:01,934 INFO L231 Difference]: Finished difference. Result has 367 places, 262 transitions, 2218 flow [2024-06-21 20:12:01,935 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2124, PETRI_DIFFERENCE_MINUEND_PLACES=354, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2218, PETRI_PLACES=367, PETRI_TRANSITIONS=262} [2024-06-21 20:12:01,935 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 336 predicate places. [2024-06-21 20:12:01,935 INFO L495 AbstractCegarLoop]: Abstraction has has 367 places, 262 transitions, 2218 flow [2024-06-21 20:12:01,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 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) [2024-06-21 20:12:01,935 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:12:01,935 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:12:01,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable212 [2024-06-21 20:12:01,935 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)] === [2024-06-21 20:12:01,935 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:12:01,935 INFO L85 PathProgramCache]: Analyzing trace with hash 1854566874, now seen corresponding path program 1 times [2024-06-21 20:12:01,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:12:01,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514772644] [2024-06-21 20:12:01,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:12:01,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:12:01,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:12:04,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:12:04,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:12:04,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514772644] [2024-06-21 20:12:04,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514772644] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:12:04,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:12:04,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-21 20:12:04,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123064372] [2024-06-21 20:12:04,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:12:04,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-21 20:12:04,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:12:04,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-21 20:12:04,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-06-21 20:12:04,890 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:12:04,890 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 367 places, 262 transitions, 2218 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-21 20:12:04,890 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:12:04,890 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:12:04,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:12:05,565 INFO L124 PetriNetUnfolderBase]: 806/1605 cut-off events. [2024-06-21 20:12:05,565 INFO L125 PetriNetUnfolderBase]: For 302167/302167 co-relation queries the response was YES. [2024-06-21 20:12:05,580 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9704 conditions, 1605 events. 806/1605 cut-off events. For 302167/302167 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 9751 event pairs, 219 based on Foata normal form. 6/1610 useless extension candidates. Maximal degree in co-relation 9551. Up to 1388 conditions per place. [2024-06-21 20:12:05,584 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 221 selfloop transitions, 47 changer transitions 15/285 dead transitions. [2024-06-21 20:12:05,584 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 285 transitions, 2848 flow [2024-06-21 20:12:05,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 20:12:05,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 20:12:05,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 125 transitions. [2024-06-21 20:12:05,585 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3255208333333333 [2024-06-21 20:12:05,585 INFO L175 Difference]: Start difference. First operand has 367 places, 262 transitions, 2218 flow. Second operand 12 states and 125 transitions. [2024-06-21 20:12:05,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 285 transitions, 2848 flow [2024-06-21 20:12:06,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 285 transitions, 2729 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-06-21 20:12:06,816 INFO L231 Difference]: Finished difference. Result has 364 places, 254 transitions, 2117 flow [2024-06-21 20:12:06,816 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2099, PETRI_DIFFERENCE_MINUEND_PLACES=352, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2117, PETRI_PLACES=364, PETRI_TRANSITIONS=254} [2024-06-21 20:12:06,817 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 333 predicate places. [2024-06-21 20:12:06,817 INFO L495 AbstractCegarLoop]: Abstraction has has 364 places, 254 transitions, 2117 flow [2024-06-21 20:12:06,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-21 20:12:06,817 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:12:06,817 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:12:06,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable213 [2024-06-21 20:12:06,817 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)] === [2024-06-21 20:12:06,818 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:12:06,818 INFO L85 PathProgramCache]: Analyzing trace with hash -748113084, now seen corresponding path program 2 times [2024-06-21 20:12:06,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:12:06,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240226432] [2024-06-21 20:12:06,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:12:06,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:12:06,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:12:08,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:12:08,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:12:08,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240226432] [2024-06-21 20:12:08,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240226432] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:12:08,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:12:08,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-06-21 20:12:08,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588629639] [2024-06-21 20:12:08,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:12:08,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-06-21 20:12:08,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:12:08,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-06-21 20:12:08,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2024-06-21 20:12:08,918 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:12:08,918 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 364 places, 254 transitions, 2117 flow. Second operand has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:12:08,918 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:12:08,918 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:12:08,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:12:09,721 INFO L124 PetriNetUnfolderBase]: 797/1598 cut-off events. [2024-06-21 20:12:09,721 INFO L125 PetriNetUnfolderBase]: For 344056/344056 co-relation queries the response was YES. [2024-06-21 20:12:09,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10291 conditions, 1598 events. 797/1598 cut-off events. For 344056/344056 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 9722 event pairs, 230 based on Foata normal form. 6/1603 useless extension candidates. Maximal degree in co-relation 10139. Up to 1342 conditions per place. [2024-06-21 20:12:09,739 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 224 selfloop transitions, 39 changer transitions 13/278 dead transitions. [2024-06-21 20:12:09,739 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 369 places, 278 transitions, 2987 flow [2024-06-21 20:12:09,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:12:09,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:12:09,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-21 20:12:09,740 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3494318181818182 [2024-06-21 20:12:09,740 INFO L175 Difference]: Start difference. First operand has 364 places, 254 transitions, 2117 flow. Second operand 11 states and 123 transitions. [2024-06-21 20:12:09,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 369 places, 278 transitions, 2987 flow [2024-06-21 20:12:10,788 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 278 transitions, 2881 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-21 20:12:10,791 INFO L231 Difference]: Finished difference. Result has 359 places, 246 transitions, 2028 flow [2024-06-21 20:12:10,791 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2015, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2028, PETRI_PLACES=359, PETRI_TRANSITIONS=246} [2024-06-21 20:12:10,791 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 328 predicate places. [2024-06-21 20:12:10,791 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 246 transitions, 2028 flow [2024-06-21 20:12:10,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:12:10,792 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:12:10,792 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:12:10,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable214 [2024-06-21 20:12:10,792 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)] === [2024-06-21 20:12:10,792 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:12:10,792 INFO L85 PathProgramCache]: Analyzing trace with hash -752581734, now seen corresponding path program 3 times [2024-06-21 20:12:10,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:12:10,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151142349] [2024-06-21 20:12:10,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:12:10,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:12:10,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:12:12,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:12:12,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:12:12,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151142349] [2024-06-21 20:12:12,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151142349] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:12:12,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:12:12,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-21 20:12:12,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651145540] [2024-06-21 20:12:12,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:12:12,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-21 20:12:12,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:12:12,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-21 20:12:12,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-21 20:12:12,397 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:12:12,397 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 246 transitions, 2028 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-21 20:12:12,397 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:12:12,397 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:12:12,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:12:12,995 INFO L124 PetriNetUnfolderBase]: 773/1558 cut-off events. [2024-06-21 20:12:12,995 INFO L125 PetriNetUnfolderBase]: For 338559/338559 co-relation queries the response was YES. [2024-06-21 20:12:13,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10072 conditions, 1558 events. 773/1558 cut-off events. For 338559/338559 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 9444 event pairs, 226 based on Foata normal form. 6/1563 useless extension candidates. Maximal degree in co-relation 9921. Up to 1377 conditions per place. [2024-06-21 20:12:13,011 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 216 selfloop transitions, 30 changer transitions 21/269 dead transitions. [2024-06-21 20:12:13,011 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 366 places, 269 transitions, 2622 flow [2024-06-21 20:12:13,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 20:12:13,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 20:12:13,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 123 transitions. [2024-06-21 20:12:13,012 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3203125 [2024-06-21 20:12:13,012 INFO L175 Difference]: Start difference. First operand has 359 places, 246 transitions, 2028 flow. Second operand 12 states and 123 transitions. [2024-06-21 20:12:13,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 366 places, 269 transitions, 2622 flow [2024-06-21 20:12:14,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 269 transitions, 2532 flow, removed 7 selfloop flow, removed 12 redundant places. [2024-06-21 20:12:14,161 INFO L231 Difference]: Finished difference. Result has 355 places, 236 transitions, 1913 flow [2024-06-21 20:12:14,161 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1938, PETRI_DIFFERENCE_MINUEND_PLACES=343, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1913, PETRI_PLACES=355, PETRI_TRANSITIONS=236} [2024-06-21 20:12:14,161 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 324 predicate places. [2024-06-21 20:12:14,161 INFO L495 AbstractCegarLoop]: Abstraction has has 355 places, 236 transitions, 1913 flow [2024-06-21 20:12:14,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-21 20:12:14,162 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:12:14,162 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:12:14,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable215 [2024-06-21 20:12:14,162 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)] === [2024-06-21 20:12:14,162 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:12:14,162 INFO L85 PathProgramCache]: Analyzing trace with hash -863404254, now seen corresponding path program 4 times [2024-06-21 20:12:14,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:12:14,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878475937] [2024-06-21 20:12:14,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:12:14,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:12:14,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:12:15,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:12:15,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:12:15,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878475937] [2024-06-21 20:12:15,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878475937] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:12:15,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:12:15,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-06-21 20:12:15,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028096700] [2024-06-21 20:12:15,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:12:15,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-06-21 20:12:15,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:12:15,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-06-21 20:12:15,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2024-06-21 20:12:16,131 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:12:16,131 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 355 places, 236 transitions, 1913 flow. Second operand has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:12:16,131 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:12:16,131 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:12:16,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:12:16,703 INFO L124 PetriNetUnfolderBase]: 741/1506 cut-off events. [2024-06-21 20:12:16,703 INFO L125 PetriNetUnfolderBase]: For 322461/322461 co-relation queries the response was YES. [2024-06-21 20:12:16,716 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9701 conditions, 1506 events. 741/1506 cut-off events. For 322461/322461 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 9126 event pairs, 219 based on Foata normal form. 6/1511 useless extension candidates. Maximal degree in co-relation 9553. Up to 1325 conditions per place. [2024-06-21 20:12:16,719 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 211 selfloop transitions, 22 changer transitions 24/259 dead transitions. [2024-06-21 20:12:16,719 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 259 transitions, 2485 flow [2024-06-21 20:12:16,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 20:12:16,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 20:12:16,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 122 transitions. [2024-06-21 20:12:16,720 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3177083333333333 [2024-06-21 20:12:16,720 INFO L175 Difference]: Start difference. First operand has 355 places, 236 transitions, 1913 flow. Second operand 12 states and 122 transitions. [2024-06-21 20:12:16,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 358 places, 259 transitions, 2485 flow [2024-06-21 20:12:17,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 259 transitions, 2409 flow, removed 8 selfloop flow, removed 12 redundant places. [2024-06-21 20:12:17,656 INFO L231 Difference]: Finished difference. Result has 347 places, 224 transitions, 1770 flow [2024-06-21 20:12:17,656 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1837, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1770, PETRI_PLACES=347, PETRI_TRANSITIONS=224} [2024-06-21 20:12:17,656 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 316 predicate places. [2024-06-21 20:12:17,656 INFO L495 AbstractCegarLoop]: Abstraction has has 347 places, 224 transitions, 1770 flow [2024-06-21 20:12:17,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:12:17,656 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:12:17,656 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:12:17,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable216 [2024-06-21 20:12:17,657 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)] === [2024-06-21 20:12:17,657 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:12:17,657 INFO L85 PathProgramCache]: Analyzing trace with hash -855673856, now seen corresponding path program 5 times [2024-06-21 20:12:17,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:12:17,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734662655] [2024-06-21 20:12:17,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:12:17,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:12:17,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:12:19,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:12:19,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:12:19,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734662655] [2024-06-21 20:12:19,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734662655] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:12:19,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:12:19,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-06-21 20:12:19,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951977105] [2024-06-21 20:12:19,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:12:19,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-06-21 20:12:19,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:12:19,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-06-21 20:12:19,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2024-06-21 20:12:19,721 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:12:19,721 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 224 transitions, 1770 flow. Second operand has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:12:19,721 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:12:19,721 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:12:19,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:12:20,398 INFO L124 PetriNetUnfolderBase]: 705/1446 cut-off events. [2024-06-21 20:12:20,398 INFO L125 PetriNetUnfolderBase]: For 301552/301552 co-relation queries the response was YES. [2024-06-21 20:12:20,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9279 conditions, 1446 events. 705/1446 cut-off events. For 301552/301552 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 8728 event pairs, 190 based on Foata normal form. 6/1451 useless extension candidates. Maximal degree in co-relation 9135. Up to 1184 conditions per place. [2024-06-21 20:12:20,413 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 193 selfloop transitions, 18 changer transitions 34/247 dead transitions. [2024-06-21 20:12:20,413 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 247 transitions, 2318 flow [2024-06-21 20:12:20,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 20:12:20,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 20:12:20,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 121 transitions. [2024-06-21 20:12:20,414 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3151041666666667 [2024-06-21 20:12:20,414 INFO L175 Difference]: Start difference. First operand has 347 places, 224 transitions, 1770 flow. Second operand 12 states and 121 transitions. [2024-06-21 20:12:20,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 247 transitions, 2318 flow [2024-06-21 20:12:21,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 247 transitions, 2252 flow, removed 7 selfloop flow, removed 13 redundant places. [2024-06-21 20:12:21,378 INFO L231 Difference]: Finished difference. Result has 337 places, 205 transitions, 1629 flow [2024-06-21 20:12:21,378 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1704, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1629, PETRI_PLACES=337, PETRI_TRANSITIONS=205} [2024-06-21 20:12:21,378 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 306 predicate places. [2024-06-21 20:12:21,378 INFO L495 AbstractCegarLoop]: Abstraction has has 337 places, 205 transitions, 1629 flow [2024-06-21 20:12:21,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:12:21,379 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:12:21,379 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:12:21,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable217 [2024-06-21 20:12:21,379 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)] === [2024-06-21 20:12:21,379 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:12:21,379 INFO L85 PathProgramCache]: Analyzing trace with hash -1080026850, now seen corresponding path program 1 times [2024-06-21 20:12:21,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:12:21,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905324028] [2024-06-21 20:12:21,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:12:21,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:12:21,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:12:23,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:12:23,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:12:23,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905324028] [2024-06-21 20:12:23,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905324028] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:12:23,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:12:23,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-06-21 20:12:23,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324780049] [2024-06-21 20:12:23,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:12:23,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-06-21 20:12:23,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:12:23,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-06-21 20:12:23,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2024-06-21 20:12:23,472 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:12:23,472 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 205 transitions, 1629 flow. Second operand has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:12:23,472 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:12:23,472 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:12:23,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:12:23,999 INFO L124 PetriNetUnfolderBase]: 614/1265 cut-off events. [2024-06-21 20:12:23,999 INFO L125 PetriNetUnfolderBase]: For 238773/238773 co-relation queries the response was YES. [2024-06-21 20:12:24,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7636 conditions, 1265 events. 614/1265 cut-off events. For 238773/238773 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 7382 event pairs, 179 based on Foata normal form. 8/1272 useless extension candidates. Maximal degree in co-relation 7497. Up to 1109 conditions per place. [2024-06-21 20:12:24,012 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 178 selfloop transitions, 9 changer transitions 33/222 dead transitions. [2024-06-21 20:12:24,012 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 222 transitions, 2113 flow [2024-06-21 20:12:24,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 20:12:24,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 20:12:24,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 114 transitions. [2024-06-21 20:12:24,012 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.296875 [2024-06-21 20:12:24,012 INFO L175 Difference]: Start difference. First operand has 337 places, 205 transitions, 1629 flow. Second operand 12 states and 114 transitions. [2024-06-21 20:12:24,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 222 transitions, 2113 flow [2024-06-21 20:12:24,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 222 transitions, 2055 flow, removed 9 selfloop flow, removed 16 redundant places. [2024-06-21 20:12:24,458 INFO L231 Difference]: Finished difference. Result has 313 places, 185 transitions, 1430 flow [2024-06-21 20:12:24,459 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1571, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1430, PETRI_PLACES=313, PETRI_TRANSITIONS=185} [2024-06-21 20:12:24,459 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 282 predicate places. [2024-06-21 20:12:24,459 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 185 transitions, 1430 flow [2024-06-21 20:12:24,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:12:24,459 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:12:24,459 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:12:24,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable218 [2024-06-21 20:12:24,459 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)] === [2024-06-21 20:12:24,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:12:24,459 INFO L85 PathProgramCache]: Analyzing trace with hash -850091848, now seen corresponding path program 6 times [2024-06-21 20:12:24,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:12:24,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424302198] [2024-06-21 20:12:24,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:12:24,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:12:24,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:12:26,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:12:26,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:12:26,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424302198] [2024-06-21 20:12:26,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424302198] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:12:26,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:12:26,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-06-21 20:12:26,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321287439] [2024-06-21 20:12:26,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:12:26,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-06-21 20:12:26,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:12:26,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-06-21 20:12:26,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2024-06-21 20:12:26,753 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:12:26,754 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 185 transitions, 1430 flow. Second operand has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:12:26,754 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:12:26,754 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:12:26,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:12:27,439 INFO L124 PetriNetUnfolderBase]: 573/1164 cut-off events. [2024-06-21 20:12:27,439 INFO L125 PetriNetUnfolderBase]: For 195108/195108 co-relation queries the response was YES. [2024-06-21 20:12:27,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6976 conditions, 1164 events. 573/1164 cut-off events. For 195108/195108 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 6585 event pairs, 149 based on Foata normal form. 6/1169 useless extension candidates. Maximal degree in co-relation 6845. Up to 880 conditions per place. [2024-06-21 20:12:27,450 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 143 selfloop transitions, 44 changer transitions 18/207 dead transitions. [2024-06-21 20:12:27,450 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 207 transitions, 1914 flow [2024-06-21 20:12:27,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:12:27,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:12:27,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-21 20:12:27,451 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-21 20:12:27,451 INFO L175 Difference]: Start difference. First operand has 313 places, 185 transitions, 1430 flow. Second operand 11 states and 121 transitions. [2024-06-21 20:12:27,451 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 207 transitions, 1914 flow [2024-06-21 20:12:27,937 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 207 transitions, 1810 flow, removed 16 selfloop flow, removed 15 redundant places. [2024-06-21 20:12:27,938 INFO L231 Difference]: Finished difference. Result has 289 places, 174 transitions, 1341 flow [2024-06-21 20:12:27,938 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1340, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1341, PETRI_PLACES=289, PETRI_TRANSITIONS=174} [2024-06-21 20:12:27,939 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 258 predicate places. [2024-06-21 20:12:27,939 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 174 transitions, 1341 flow [2024-06-21 20:12:27,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:12:27,939 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:12:27,939 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:12:27,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable219 [2024-06-21 20:12:27,939 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)] === [2024-06-21 20:12:27,939 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:12:27,939 INFO L85 PathProgramCache]: Analyzing trace with hash -1078165978, now seen corresponding path program 7 times [2024-06-21 20:12:27,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:12:27,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962716419] [2024-06-21 20:12:27,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:12:27,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:12:27,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:12:29,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:12:29,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:12:29,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962716419] [2024-06-21 20:12:29,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962716419] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:12:29,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:12:29,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-06-21 20:12:29,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240103613] [2024-06-21 20:12:29,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:12:29,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-06-21 20:12:29,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:12:29,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-06-21 20:12:29,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2024-06-21 20:12:29,957 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:12:29,957 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 174 transitions, 1341 flow. Second operand has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:12:29,957 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:12:29,957 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:12:29,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:12:30,534 INFO L124 PetriNetUnfolderBase]: 547/1114 cut-off events. [2024-06-21 20:12:30,534 INFO L125 PetriNetUnfolderBase]: For 173238/173238 co-relation queries the response was YES. [2024-06-21 20:12:30,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6498 conditions, 1114 events. 547/1114 cut-off events. For 173238/173238 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 6232 event pairs, 141 based on Foata normal form. 6/1119 useless extension candidates. Maximal degree in co-relation 6374. Up to 860 conditions per place. [2024-06-21 20:12:30,544 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 138 selfloop transitions, 36 changer transitions 21/197 dead transitions. [2024-06-21 20:12:30,544 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 197 transitions, 1789 flow [2024-06-21 20:12:30,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 20:12:30,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 20:12:30,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 126 transitions. [2024-06-21 20:12:30,549 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.328125 [2024-06-21 20:12:30,549 INFO L175 Difference]: Start difference. First operand has 289 places, 174 transitions, 1341 flow. Second operand 12 states and 126 transitions. [2024-06-21 20:12:30,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 197 transitions, 1789 flow [2024-06-21 20:12:31,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 197 transitions, 1689 flow, removed 4 selfloop flow, removed 14 redundant places. [2024-06-21 20:12:31,082 INFO L231 Difference]: Finished difference. Result has 280 places, 164 transitions, 1242 flow [2024-06-21 20:12:31,082 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1241, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1242, PETRI_PLACES=280, PETRI_TRANSITIONS=164} [2024-06-21 20:12:31,083 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 249 predicate places. [2024-06-21 20:12:31,083 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 164 transitions, 1242 flow [2024-06-21 20:12:31,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:12:31,083 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:12:31,083 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:12:31,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable220 [2024-06-21 20:12:31,083 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)] === [2024-06-21 20:12:31,083 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:12:31,083 INFO L85 PathProgramCache]: Analyzing trace with hash -1268920874, now seen corresponding path program 8 times [2024-06-21 20:12:31,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:12:31,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634532679] [2024-06-21 20:12:31,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:12:31,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:12:31,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:12:32,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:12:32,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:12:32,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634532679] [2024-06-21 20:12:32,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634532679] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:12:32,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:12:32,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-06-21 20:12:32,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865305917] [2024-06-21 20:12:32,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:12:32,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-06-21 20:12:32,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:12:32,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-06-21 20:12:32,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2024-06-21 20:12:33,119 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:12:33,119 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 164 transitions, 1242 flow. Second operand has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:12:33,120 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:12:33,120 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:12:33,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:12:33,659 INFO L124 PetriNetUnfolderBase]: 502/1023 cut-off events. [2024-06-21 20:12:33,659 INFO L125 PetriNetUnfolderBase]: For 135728/135728 co-relation queries the response was YES. [2024-06-21 20:12:33,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5523 conditions, 1023 events. 502/1023 cut-off events. For 135728/135728 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 5603 event pairs, 128 based on Foata normal form. 6/1028 useless extension candidates. Maximal degree in co-relation 5402. Up to 831 conditions per place. [2024-06-21 20:12:33,668 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 135 selfloop transitions, 36 changer transitions 13/186 dead transitions. [2024-06-21 20:12:33,668 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 186 transitions, 1662 flow [2024-06-21 20:12:33,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 20:12:33,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 20:12:33,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 125 transitions. [2024-06-21 20:12:33,668 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3255208333333333 [2024-06-21 20:12:33,668 INFO L175 Difference]: Start difference. First operand has 280 places, 164 transitions, 1242 flow. Second operand 12 states and 125 transitions. [2024-06-21 20:12:33,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 186 transitions, 1662 flow [2024-06-21 20:12:33,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 186 transitions, 1580 flow, removed 5 selfloop flow, removed 12 redundant places. [2024-06-21 20:12:33,978 INFO L231 Difference]: Finished difference. Result has 271 places, 159 transitions, 1207 flow [2024-06-21 20:12:33,978 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1160, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1207, PETRI_PLACES=271, PETRI_TRANSITIONS=159} [2024-06-21 20:12:33,978 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 240 predicate places. [2024-06-21 20:12:33,978 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 159 transitions, 1207 flow [2024-06-21 20:12:33,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:12:33,978 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:12:33,978 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:12:33,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable221 [2024-06-21 20:12:33,979 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)] === [2024-06-21 20:12:33,979 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:12:33,979 INFO L85 PathProgramCache]: Analyzing trace with hash 1921158446, now seen corresponding path program 9 times [2024-06-21 20:12:33,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:12:33,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61130448] [2024-06-21 20:12:33,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:12:33,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:12:34,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:12:36,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:12:36,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:12:36,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61130448] [2024-06-21 20:12:36,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61130448] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:12:36,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:12:36,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-06-21 20:12:36,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751049865] [2024-06-21 20:12:36,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:12:36,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-06-21 20:12:36,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:12:36,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-06-21 20:12:36,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2024-06-21 20:12:36,322 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:12:36,322 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 159 transitions, 1207 flow. Second operand has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:12:36,322 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:12:36,322 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:12:36,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:12:36,815 INFO L124 PetriNetUnfolderBase]: 486/995 cut-off events. [2024-06-21 20:12:36,816 INFO L125 PetriNetUnfolderBase]: For 124588/124588 co-relation queries the response was YES. [2024-06-21 20:12:36,822 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5343 conditions, 995 events. 486/995 cut-off events. For 124588/124588 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 5418 event pairs, 126 based on Foata normal form. 6/1000 useless extension candidates. Maximal degree in co-relation 5226. Up to 811 conditions per place. [2024-06-21 20:12:36,825 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 131 selfloop transitions, 32 changer transitions 16/181 dead transitions. [2024-06-21 20:12:36,825 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 181 transitions, 1617 flow [2024-06-21 20:12:36,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 20:12:36,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 20:12:36,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 124 transitions. [2024-06-21 20:12:36,825 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3229166666666667 [2024-06-21 20:12:36,825 INFO L175 Difference]: Start difference. First operand has 271 places, 159 transitions, 1207 flow. Second operand 12 states and 124 transitions. [2024-06-21 20:12:36,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 181 transitions, 1617 flow [2024-06-21 20:12:37,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 181 transitions, 1539 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-21 20:12:37,064 INFO L231 Difference]: Finished difference. Result has 265 places, 153 transitions, 1164 flow [2024-06-21 20:12:37,064 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1129, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1164, PETRI_PLACES=265, PETRI_TRANSITIONS=153} [2024-06-21 20:12:37,064 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 234 predicate places. [2024-06-21 20:12:37,064 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 153 transitions, 1164 flow [2024-06-21 20:12:37,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:12:37,064 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:12:37,064 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:12:37,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable222 [2024-06-21 20:12:37,065 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)] === [2024-06-21 20:12:37,065 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:12:37,065 INFO L85 PathProgramCache]: Analyzing trace with hash -1273562504, now seen corresponding path program 10 times [2024-06-21 20:12:37,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:12:37,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852909454] [2024-06-21 20:12:37,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:12:37,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:12:37,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:12:38,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:12:38,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:12:38,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852909454] [2024-06-21 20:12:38,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852909454] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:12:38,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:12:38,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-06-21 20:12:38,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983739669] [2024-06-21 20:12:38,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:12:38,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-06-21 20:12:38,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:12:38,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-06-21 20:12:38,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2024-06-21 20:12:39,021 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:12:39,021 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 153 transitions, 1164 flow. Second operand has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:12:39,021 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:12:39,021 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:12:39,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:12:39,557 INFO L124 PetriNetUnfolderBase]: 466/959 cut-off events. [2024-06-21 20:12:39,557 INFO L125 PetriNetUnfolderBase]: For 119180/119180 co-relation queries the response was YES. [2024-06-21 20:12:39,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5177 conditions, 959 events. 466/959 cut-off events. For 119180/119180 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 5176 event pairs, 122 based on Foata normal form. 6/964 useless extension candidates. Maximal degree in co-relation 5062. Up to 783 conditions per place. [2024-06-21 20:12:39,565 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 125 selfloop transitions, 22 changer transitions 26/175 dead transitions. [2024-06-21 20:12:39,565 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 175 transitions, 1562 flow [2024-06-21 20:12:39,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 20:12:39,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 20:12:39,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 123 transitions. [2024-06-21 20:12:39,566 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3203125 [2024-06-21 20:12:39,566 INFO L175 Difference]: Start difference. First operand has 265 places, 153 transitions, 1164 flow. Second operand 12 states and 123 transitions. [2024-06-21 20:12:39,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 175 transitions, 1562 flow [2024-06-21 20:12:39,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 175 transitions, 1486 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-21 20:12:39,783 INFO L231 Difference]: Finished difference. Result has 257 places, 140 transitions, 1029 flow [2024-06-21 20:12:39,783 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1088, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1029, PETRI_PLACES=257, PETRI_TRANSITIONS=140} [2024-06-21 20:12:39,783 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 226 predicate places. [2024-06-21 20:12:39,783 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 140 transitions, 1029 flow [2024-06-21 20:12:39,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:12:39,784 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:12:39,784 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:12:39,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable223 [2024-06-21 20:12:39,784 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)] === [2024-06-21 20:12:39,784 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:12:39,784 INFO L85 PathProgramCache]: Analyzing trace with hash -2105371836, now seen corresponding path program 11 times [2024-06-21 20:12:39,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:12:39,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292900217] [2024-06-21 20:12:39,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:12:39,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:12:39,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:12:42,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:12:42,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:12:42,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292900217] [2024-06-21 20:12:42,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292900217] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:12:42,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:12:42,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-06-21 20:12:42,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103771125] [2024-06-21 20:12:42,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:12:42,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-06-21 20:12:42,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:12:42,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-06-21 20:12:42,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2024-06-21 20:12:42,320 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:12:42,321 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 140 transitions, 1029 flow. Second operand has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:12:42,321 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:12:42,321 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:12:42,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:12:42,935 INFO L124 PetriNetUnfolderBase]: 436/897 cut-off events. [2024-06-21 20:12:42,935 INFO L125 PetriNetUnfolderBase]: For 111254/111254 co-relation queries the response was YES. [2024-06-21 20:12:42,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4858 conditions, 897 events. 436/897 cut-off events. For 111254/111254 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 4744 event pairs, 120 based on Foata normal form. 6/902 useless extension candidates. Maximal degree in co-relation 4746. Up to 747 conditions per place. [2024-06-21 20:12:42,941 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 121 selfloop transitions, 21 changer transitions 14/158 dead transitions. [2024-06-21 20:12:42,941 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 158 transitions, 1381 flow [2024-06-21 20:12:42,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:12:42,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:12:42,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 112 transitions. [2024-06-21 20:12:42,942 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3181818181818182 [2024-06-21 20:12:42,942 INFO L175 Difference]: Start difference. First operand has 257 places, 140 transitions, 1029 flow. Second operand 11 states and 112 transitions. [2024-06-21 20:12:42,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 158 transitions, 1381 flow [2024-06-21 20:12:43,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 158 transitions, 1317 flow, removed 7 selfloop flow, removed 14 redundant places. [2024-06-21 20:12:43,125 INFO L231 Difference]: Finished difference. Result has 242 places, 134 transitions, 982 flow [2024-06-21 20:12:43,125 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=965, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=982, PETRI_PLACES=242, PETRI_TRANSITIONS=134} [2024-06-21 20:12:43,125 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 211 predicate places. [2024-06-21 20:12:43,126 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 134 transitions, 982 flow [2024-06-21 20:12:43,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:12:43,126 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:12:43,126 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:12:43,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable224 [2024-06-21 20:12:43,126 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)] === [2024-06-21 20:12:43,126 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:12:43,126 INFO L85 PathProgramCache]: Analyzing trace with hash 492666492, now seen corresponding path program 12 times [2024-06-21 20:12:43,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:12:43,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139962452] [2024-06-21 20:12:43,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:12:43,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:12:43,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:12:44,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:12:44,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:12:44,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139962452] [2024-06-21 20:12:44,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139962452] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:12:44,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:12:44,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-06-21 20:12:44,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018421064] [2024-06-21 20:12:44,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:12:44,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-06-21 20:12:44,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:12:44,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-06-21 20:12:44,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2024-06-21 20:12:44,987 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:12:44,988 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 134 transitions, 982 flow. Second operand has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:12:44,988 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:12:44,988 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:12:44,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:12:45,429 INFO L124 PetriNetUnfolderBase]: 416/861 cut-off events. [2024-06-21 20:12:45,429 INFO L125 PetriNetUnfolderBase]: For 96318/96318 co-relation queries the response was YES. [2024-06-21 20:12:45,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4600 conditions, 861 events. 416/861 cut-off events. For 96318/96318 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 4519 event pairs, 116 based on Foata normal form. 6/866 useless extension candidates. Maximal degree in co-relation 4494. Up to 719 conditions per place. [2024-06-21 20:12:45,436 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 116 selfloop transitions, 17 changer transitions 19/154 dead transitions. [2024-06-21 20:12:45,436 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 154 transitions, 1330 flow [2024-06-21 20:12:45,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 20:12:45,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 20:12:45,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 118 transitions. [2024-06-21 20:12:45,436 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3072916666666667 [2024-06-21 20:12:45,437 INFO L175 Difference]: Start difference. First operand has 242 places, 134 transitions, 982 flow. Second operand 12 states and 118 transitions. [2024-06-21 20:12:45,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 154 transitions, 1330 flow [2024-06-21 20:12:45,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 154 transitions, 1280 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-21 20:12:45,578 INFO L231 Difference]: Finished difference. Result has 236 places, 127 transitions, 931 flow [2024-06-21 20:12:45,579 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=932, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=931, PETRI_PLACES=236, PETRI_TRANSITIONS=127} [2024-06-21 20:12:45,579 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 205 predicate places. [2024-06-21 20:12:45,579 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 127 transitions, 931 flow [2024-06-21 20:12:45,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:12:45,579 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:12:45,579 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:12:45,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable225 [2024-06-21 20:12:45,579 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)] === [2024-06-21 20:12:45,579 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:12:45,579 INFO L85 PathProgramCache]: Analyzing trace with hash 2074304290, now seen corresponding path program 13 times [2024-06-21 20:12:45,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:12:45,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520698958] [2024-06-21 20:12:45,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:12:45,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:12:45,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:12:47,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:12:47,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:12:47,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520698958] [2024-06-21 20:12:47,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520698958] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:12:47,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:12:47,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-06-21 20:12:47,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622850492] [2024-06-21 20:12:47,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:12:47,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-06-21 20:12:47,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:12:47,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-06-21 20:12:47,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2024-06-21 20:12:47,511 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:12:47,512 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 127 transitions, 931 flow. Second operand has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:12:47,512 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:12:47,512 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:12:47,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:12:47,981 INFO L124 PetriNetUnfolderBase]: 392/817 cut-off events. [2024-06-21 20:12:47,982 INFO L125 PetriNetUnfolderBase]: For 89234/89234 co-relation queries the response was YES. [2024-06-21 20:12:47,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4381 conditions, 817 events. 392/817 cut-off events. For 89234/89234 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 4261 event pairs, 110 based on Foata normal form. 6/822 useless extension candidates. Maximal degree in co-relation 4278. Up to 683 conditions per place. [2024-06-21 20:12:47,987 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 104 selfloop transitions, 8 changer transitions 33/147 dead transitions. [2024-06-21 20:12:47,987 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 147 transitions, 1265 flow [2024-06-21 20:12:47,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 20:12:47,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 20:12:47,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 117 transitions. [2024-06-21 20:12:47,988 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3046875 [2024-06-21 20:12:47,988 INFO L175 Difference]: Start difference. First operand has 236 places, 127 transitions, 931 flow. Second operand 12 states and 117 transitions. [2024-06-21 20:12:47,988 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 147 transitions, 1265 flow [2024-06-21 20:12:48,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 147 transitions, 1221 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-21 20:12:48,108 INFO L231 Difference]: Finished difference. Result has 227 places, 111 transitions, 776 flow [2024-06-21 20:12:48,108 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=887, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=776, PETRI_PLACES=227, PETRI_TRANSITIONS=111} [2024-06-21 20:12:48,108 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 196 predicate places. [2024-06-21 20:12:48,108 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 111 transitions, 776 flow [2024-06-21 20:12:48,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:12:48,109 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:12:48,109 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:12:48,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable226 [2024-06-21 20:12:48,109 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)] === [2024-06-21 20:12:48,109 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:12:48,109 INFO L85 PathProgramCache]: Analyzing trace with hash -1122106056, now seen corresponding path program 14 times [2024-06-21 20:12:48,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:12:48,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364503364] [2024-06-21 20:12:48,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:12:48,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:12:48,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:12:50,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:12:50,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:12:50,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364503364] [2024-06-21 20:12:50,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364503364] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:12:50,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:12:50,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-06-21 20:12:50,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45687914] [2024-06-21 20:12:50,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:12:50,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-06-21 20:12:50,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:12:50,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-06-21 20:12:50,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2024-06-21 20:12:50,312 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:12:50,316 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 111 transitions, 776 flow. Second operand has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:12:50,316 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:12:50,316 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:12:50,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:12:50,700 INFO L124 PetriNetUnfolderBase]: 351/726 cut-off events. [2024-06-21 20:12:50,701 INFO L125 PetriNetUnfolderBase]: For 79957/79957 co-relation queries the response was YES. [2024-06-21 20:12:50,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3935 conditions, 726 events. 351/726 cut-off events. For 79957/79957 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 3726 event pairs, 96 based on Foata normal form. 6/732 useless extension candidates. Maximal degree in co-relation 3836. Up to 610 conditions per place. [2024-06-21 20:12:50,706 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 94 selfloop transitions, 21 changer transitions 13/130 dead transitions. [2024-06-21 20:12:50,706 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 130 transitions, 1076 flow [2024-06-21 20:12:50,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 20:12:50,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 20:12:50,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 116 transitions. [2024-06-21 20:12:50,707 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3020833333333333 [2024-06-21 20:12:50,708 INFO L175 Difference]: Start difference. First operand has 227 places, 111 transitions, 776 flow. Second operand 12 states and 116 transitions. [2024-06-21 20:12:50,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 130 transitions, 1076 flow [2024-06-21 20:12:50,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 130 transitions, 1014 flow, removed 11 selfloop flow, removed 20 redundant places. [2024-06-21 20:12:50,798 INFO L231 Difference]: Finished difference. Result has 200 places, 106 transitions, 726 flow [2024-06-21 20:12:50,799 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=716, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=726, PETRI_PLACES=200, PETRI_TRANSITIONS=106} [2024-06-21 20:12:50,799 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 169 predicate places. [2024-06-21 20:12:50,799 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 106 transitions, 726 flow [2024-06-21 20:12:50,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:12:50,799 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:12:50,800 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:12:50,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable227 [2024-06-21 20:12:50,800 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)] === [2024-06-21 20:12:50,800 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:12:50,800 INFO L85 PathProgramCache]: Analyzing trace with hash 1694900974, now seen corresponding path program 15 times [2024-06-21 20:12:50,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:12:50,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078649873] [2024-06-21 20:12:50,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:12:50,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:12:50,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:12:52,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:12:52,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:12:52,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078649873] [2024-06-21 20:12:52,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078649873] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:12:52,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:12:52,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-06-21 20:12:52,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863431007] [2024-06-21 20:12:52,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:12:52,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-06-21 20:12:52,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:12:52,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-06-21 20:12:52,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2024-06-21 20:12:52,809 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:12:52,809 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 106 transitions, 726 flow. Second operand has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:12:52,809 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:12:52,809 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:12:52,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:12:53,273 INFO L124 PetriNetUnfolderBase]: 335/698 cut-off events. [2024-06-21 20:12:53,273 INFO L125 PetriNetUnfolderBase]: For 65358/65358 co-relation queries the response was YES. [2024-06-21 20:12:53,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3652 conditions, 698 events. 335/698 cut-off events. For 65358/65358 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 3553 event pairs, 94 based on Foata normal form. 6/704 useless extension candidates. Maximal degree in co-relation 3564. Up to 582 conditions per place. [2024-06-21 20:12:53,277 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 89 selfloop transitions, 17 changer transitions 17/125 dead transitions. [2024-06-21 20:12:53,277 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 125 transitions, 1014 flow [2024-06-21 20:12:53,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 20:12:53,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 20:12:53,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 115 transitions. [2024-06-21 20:12:53,278 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2994791666666667 [2024-06-21 20:12:53,278 INFO L175 Difference]: Start difference. First operand has 200 places, 106 transitions, 726 flow. Second operand 12 states and 115 transitions. [2024-06-21 20:12:53,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 125 transitions, 1014 flow [2024-06-21 20:12:53,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 125 transitions, 958 flow, removed 3 selfloop flow, removed 12 redundant places. [2024-06-21 20:12:53,381 INFO L231 Difference]: Finished difference. Result has 194 places, 99 transitions, 659 flow [2024-06-21 20:12:53,381 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=670, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=659, PETRI_PLACES=194, PETRI_TRANSITIONS=99} [2024-06-21 20:12:53,381 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 163 predicate places. [2024-06-21 20:12:53,381 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 99 transitions, 659 flow [2024-06-21 20:12:53,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:12:53,381 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:12:53,381 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:12:53,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable228 [2024-06-21 20:12:53,382 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)] === [2024-06-21 20:12:53,382 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:12:53,382 INFO L85 PathProgramCache]: Analyzing trace with hash 201272062, now seen corresponding path program 16 times [2024-06-21 20:12:53,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:12:53,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063876089] [2024-06-21 20:12:53,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:12:53,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:12:53,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:12:55,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:12:55,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:12:55,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063876089] [2024-06-21 20:12:55,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063876089] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:12:55,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:12:55,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-21 20:12:55,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706297591] [2024-06-21 20:12:55,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:12:55,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-21 20:12:55,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:12:55,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-21 20:12:55,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-06-21 20:12:55,141 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:12:55,141 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 99 transitions, 659 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-21 20:12:55,141 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:12:55,141 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:12:55,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:12:55,482 INFO L124 PetriNetUnfolderBase]: 311/654 cut-off events. [2024-06-21 20:12:55,482 INFO L125 PetriNetUnfolderBase]: For 61406/61406 co-relation queries the response was YES. [2024-06-21 20:12:55,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3431 conditions, 654 events. 311/654 cut-off events. For 61406/61406 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 3279 event pairs, 92 based on Foata normal form. 6/660 useless extension candidates. Maximal degree in co-relation 3346. Up to 567 conditions per place. [2024-06-21 20:12:55,486 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 88 selfloop transitions, 11 changer transitions 17/118 dead transitions. [2024-06-21 20:12:55,487 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 118 transitions, 935 flow [2024-06-21 20:12:55,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 20:12:55,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 20:12:55,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 114 transitions. [2024-06-21 20:12:55,487 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.296875 [2024-06-21 20:12:55,487 INFO L175 Difference]: Start difference. First operand has 194 places, 99 transitions, 659 flow. Second operand 12 states and 114 transitions. [2024-06-21 20:12:55,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 118 transitions, 935 flow [2024-06-21 20:12:55,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 118 transitions, 891 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-21 20:12:55,570 INFO L231 Difference]: Finished difference. Result has 185 places, 94 transitions, 598 flow [2024-06-21 20:12:55,570 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=615, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=598, PETRI_PLACES=185, PETRI_TRANSITIONS=94} [2024-06-21 20:12:55,571 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 154 predicate places. [2024-06-21 20:12:55,571 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 94 transitions, 598 flow [2024-06-21 20:12:55,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-21 20:12:55,571 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:12:55,571 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:12:55,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable229 [2024-06-21 20:12:55,571 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)] === [2024-06-21 20:12:55,571 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:12:55,571 INFO L85 PathProgramCache]: Analyzing trace with hash 1690432324, now seen corresponding path program 17 times [2024-06-21 20:12:55,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:12:55,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203852946] [2024-06-21 20:12:55,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:12:55,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:12:55,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:12:57,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:12:57,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:12:57,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203852946] [2024-06-21 20:12:57,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203852946] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:12:57,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:12:57,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-06-21 20:12:57,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902259182] [2024-06-21 20:12:57,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:12:57,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-06-21 20:12:57,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:12:57,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-06-21 20:12:57,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2024-06-21 20:12:57,752 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:12:57,753 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 94 transitions, 598 flow. Second operand has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:12:57,753 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:12:57,753 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:12:57,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:12:58,250 INFO L124 PetriNetUnfolderBase]: 295/622 cut-off events. [2024-06-21 20:12:58,250 INFO L125 PetriNetUnfolderBase]: For 55708/55708 co-relation queries the response was YES. [2024-06-21 20:12:58,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3223 conditions, 622 events. 295/622 cut-off events. For 55708/55708 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 3080 event pairs, 86 based on Foata normal form. 6/628 useless extension candidates. Maximal degree in co-relation 3142. Up to 506 conditions per place. [2024-06-21 20:12:58,254 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 77 selfloop transitions, 11 changer transitions 23/113 dead transitions. [2024-06-21 20:12:58,254 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 113 transitions, 862 flow [2024-06-21 20:12:58,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 20:12:58,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 20:12:58,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 114 transitions. [2024-06-21 20:12:58,255 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.296875 [2024-06-21 20:12:58,255 INFO L175 Difference]: Start difference. First operand has 185 places, 94 transitions, 598 flow. Second operand 12 states and 114 transitions. [2024-06-21 20:12:58,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 113 transitions, 862 flow [2024-06-21 20:12:58,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 113 transitions, 828 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-21 20:12:58,336 INFO L231 Difference]: Finished difference. Result has 177 places, 84 transitions, 515 flow [2024-06-21 20:12:58,336 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=564, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=515, PETRI_PLACES=177, PETRI_TRANSITIONS=84} [2024-06-21 20:12:58,336 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 146 predicate places. [2024-06-21 20:12:58,336 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 84 transitions, 515 flow [2024-06-21 20:12:58,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:12:58,336 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:12:58,336 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:12:58,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable230 [2024-06-21 20:12:58,336 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)] === [2024-06-21 20:12:58,337 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:12:58,337 INFO L85 PathProgramCache]: Analyzing trace with hash -716678128, now seen corresponding path program 18 times [2024-06-21 20:12:58,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:12:58,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128177793] [2024-06-21 20:12:58,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:12:58,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:12:58,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:13:00,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:13:00,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:13:00,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128177793] [2024-06-21 20:13:00,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128177793] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:13:00,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:13:00,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-06-21 20:13:00,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718011699] [2024-06-21 20:13:00,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:13:00,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-06-21 20:13:00,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:13:00,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-06-21 20:13:00,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2024-06-21 20:13:00,400 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:13:00,400 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 84 transitions, 515 flow. Second operand has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:13:00,400 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:13:00,400 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:13:00,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:13:00,882 INFO L124 PetriNetUnfolderBase]: 265/560 cut-off events. [2024-06-21 20:13:00,883 INFO L125 PetriNetUnfolderBase]: For 55687/55687 co-relation queries the response was YES. [2024-06-21 20:13:00,885 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3007 conditions, 560 events. 265/560 cut-off events. For 55687/55687 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2671 event pairs, 82 based on Foata normal form. 6/566 useless extension candidates. Maximal degree in co-relation 2930. Up to 448 conditions per place. [2024-06-21 20:13:00,886 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 74 selfloop transitions, 16 changer transitions 10/102 dead transitions. [2024-06-21 20:13:00,886 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 102 transitions, 753 flow [2024-06-21 20:13:00,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 20:13:00,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 20:13:00,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 115 transitions. [2024-06-21 20:13:00,886 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2994791666666667 [2024-06-21 20:13:00,887 INFO L175 Difference]: Start difference. First operand has 177 places, 84 transitions, 515 flow. Second operand 12 states and 115 transitions. [2024-06-21 20:13:00,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 102 transitions, 753 flow [2024-06-21 20:13:00,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 102 transitions, 719 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-06-21 20:13:00,942 INFO L231 Difference]: Finished difference. Result has 164 places, 80 transitions, 496 flow [2024-06-21 20:13:00,942 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=481, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=496, PETRI_PLACES=164, PETRI_TRANSITIONS=80} [2024-06-21 20:13:00,942 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 133 predicate places. [2024-06-21 20:13:00,942 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 80 transitions, 496 flow [2024-06-21 20:13:00,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:13:00,942 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:13:00,943 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:13:00,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable231 [2024-06-21 20:13:00,943 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)] === [2024-06-21 20:13:00,943 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:13:00,943 INFO L85 PathProgramCache]: Analyzing trace with hash -488603998, now seen corresponding path program 19 times [2024-06-21 20:13:00,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:13:00,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402910943] [2024-06-21 20:13:00,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:13:00,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:13:00,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:13:02,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:13:02,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:13:02,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402910943] [2024-06-21 20:13:02,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402910943] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:13:02,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:13:02,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-21 20:13:02,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292593445] [2024-06-21 20:13:02,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:13:02,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-21 20:13:02,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:13:02,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-21 20:13:02,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2024-06-21 20:13:02,962 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:13:02,962 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 80 transitions, 496 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-21 20:13:02,962 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:13:02,962 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:13:02,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:13:03,320 INFO L124 PetriNetUnfolderBase]: 253/536 cut-off events. [2024-06-21 20:13:03,320 INFO L125 PetriNetUnfolderBase]: For 48570/48570 co-relation queries the response was YES. [2024-06-21 20:13:03,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2852 conditions, 536 events. 253/536 cut-off events. For 48570/48570 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2513 event pairs, 84 based on Foata normal form. 6/542 useless extension candidates. Maximal degree in co-relation 2780. Up to 444 conditions per place. [2024-06-21 20:13:03,323 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 70 selfloop transitions, 12 changer transitions 14/98 dead transitions. [2024-06-21 20:13:03,323 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 98 transitions, 726 flow [2024-06-21 20:13:03,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 20:13:03,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 20:13:03,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 114 transitions. [2024-06-21 20:13:03,324 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.296875 [2024-06-21 20:13:03,324 INFO L175 Difference]: Start difference. First operand has 164 places, 80 transitions, 496 flow. Second operand 12 states and 114 transitions. [2024-06-21 20:13:03,324 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 98 transitions, 726 flow [2024-06-21 20:13:03,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 98 transitions, 686 flow, removed 4 selfloop flow, removed 13 redundant places. [2024-06-21 20:13:03,378 INFO L231 Difference]: Finished difference. Result has 158 places, 74 transitions, 453 flow [2024-06-21 20:13:03,379 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=456, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=453, PETRI_PLACES=158, PETRI_TRANSITIONS=74} [2024-06-21 20:13:03,379 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 127 predicate places. [2024-06-21 20:13:03,379 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 74 transitions, 453 flow [2024-06-21 20:13:03,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-21 20:13:03,379 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:13:03,379 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:13:03,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable232 [2024-06-21 20:13:03,380 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)] === [2024-06-21 20:13:03,380 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:13:03,380 INFO L85 PathProgramCache]: Analyzing trace with hash 858795972, now seen corresponding path program 20 times [2024-06-21 20:13:03,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:13:03,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494376740] [2024-06-21 20:13:03,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:13:03,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:13:03,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:13:05,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:13:05,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:13:05,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494376740] [2024-06-21 20:13:05,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494376740] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:13:05,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:13:05,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-06-21 20:13:05,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090253990] [2024-06-21 20:13:05,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:13:05,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-06-21 20:13:05,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:13:05,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-06-21 20:13:05,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2024-06-21 20:13:05,636 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:13:05,636 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 74 transitions, 453 flow. Second operand has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:13:05,636 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:13:05,636 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:13:05,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:13:06,052 INFO L124 PetriNetUnfolderBase]: 227/478 cut-off events. [2024-06-21 20:13:06,053 INFO L125 PetriNetUnfolderBase]: For 34872/34872 co-relation queries the response was YES. [2024-06-21 20:13:06,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2303 conditions, 478 events. 227/478 cut-off events. For 34872/34872 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2137 event pairs, 71 based on Foata normal form. 6/484 useless extension candidates. Maximal degree in co-relation 2234. Up to 401 conditions per place. [2024-06-21 20:13:06,055 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 67 selfloop transitions, 11 changer transitions 11/91 dead transitions. [2024-06-21 20:13:06,055 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 91 transitions, 667 flow [2024-06-21 20:13:06,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 20:13:06,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 20:13:06,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 111 transitions. [2024-06-21 20:13:06,056 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2890625 [2024-06-21 20:13:06,056 INFO L175 Difference]: Start difference. First operand has 158 places, 74 transitions, 453 flow. Second operand 12 states and 111 transitions. [2024-06-21 20:13:06,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 91 transitions, 667 flow [2024-06-21 20:13:06,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 91 transitions, 631 flow, removed 6 selfloop flow, removed 14 redundant places. [2024-06-21 20:13:06,090 INFO L231 Difference]: Finished difference. Result has 148 places, 71 transitions, 427 flow [2024-06-21 20:13:06,090 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=417, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=427, PETRI_PLACES=148, PETRI_TRANSITIONS=71} [2024-06-21 20:13:06,090 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 117 predicate places. [2024-06-21 20:13:06,091 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 71 transitions, 427 flow [2024-06-21 20:13:06,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:13:06,091 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:13:06,091 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:13:06,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable233 [2024-06-21 20:13:06,091 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)] === [2024-06-21 20:13:06,091 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:13:06,091 INFO L85 PathProgramCache]: Analyzing trace with hash 1147788072, now seen corresponding path program 21 times [2024-06-21 20:13:06,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:13:06,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340304516] [2024-06-21 20:13:06,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:13:06,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:13:06,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:13:07,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:13:07,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:13:07,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340304516] [2024-06-21 20:13:07,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340304516] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:13:07,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:13:07,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-21 20:13:07,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507029719] [2024-06-21 20:13:07,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:13:07,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-21 20:13:07,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:13:07,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-21 20:13:07,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-06-21 20:13:07,974 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:13:07,974 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 71 transitions, 427 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-21 20:13:07,974 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:13:07,974 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:13:07,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:13:08,316 INFO L124 PetriNetUnfolderBase]: 202/427 cut-off events. [2024-06-21 20:13:08,317 INFO L125 PetriNetUnfolderBase]: For 21558/21558 co-relation queries the response was YES. [2024-06-21 20:13:08,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1788 conditions, 427 events. 202/427 cut-off events. For 21558/21558 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1849 event pairs, 62 based on Foata normal form. 6/433 useless extension candidates. Maximal degree in co-relation 1724. Up to 365 conditions per place. [2024-06-21 20:13:08,319 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 60 selfloop transitions, 8 changer transitions 16/86 dead transitions. [2024-06-21 20:13:08,319 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 86 transitions, 629 flow [2024-06-21 20:13:08,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 20:13:08,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 20:13:08,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 106 transitions. [2024-06-21 20:13:08,319 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2760416666666667 [2024-06-21 20:13:08,319 INFO L175 Difference]: Start difference. First operand has 148 places, 71 transitions, 427 flow. Second operand 12 states and 106 transitions. [2024-06-21 20:13:08,319 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 86 transitions, 629 flow [2024-06-21 20:13:08,345 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 86 transitions, 601 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-21 20:13:08,346 INFO L231 Difference]: Finished difference. Result has 143 places, 66 transitions, 390 flow [2024-06-21 20:13:08,346 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=399, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=390, PETRI_PLACES=143, PETRI_TRANSITIONS=66} [2024-06-21 20:13:08,346 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 112 predicate places. [2024-06-21 20:13:08,346 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 66 transitions, 390 flow [2024-06-21 20:13:08,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-21 20:13:08,346 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:13:08,347 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:13:08,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable234 [2024-06-21 20:13:08,347 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)] === [2024-06-21 20:13:08,347 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:13:08,347 INFO L85 PathProgramCache]: Analyzing trace with hash -1497652608, now seen corresponding path program 22 times [2024-06-21 20:13:08,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:13:08,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984440688] [2024-06-21 20:13:08,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:13:08,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:13:08,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:13:09,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:13:09,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:13:09,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984440688] [2024-06-21 20:13:09,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984440688] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:13:09,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:13:09,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 20:13:09,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159413311] [2024-06-21 20:13:09,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:13:09,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 20:13:09,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:13:09,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 20:13:09,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-21 20:13:09,820 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:13:09,820 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 66 transitions, 390 flow. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 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) [2024-06-21 20:13:09,820 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:13:09,820 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:13:09,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:13:10,130 INFO L124 PetriNetUnfolderBase]: 191/402 cut-off events. [2024-06-21 20:13:10,131 INFO L125 PetriNetUnfolderBase]: For 19818/19818 co-relation queries the response was YES. [2024-06-21 20:13:10,132 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1678 conditions, 402 events. 191/402 cut-off events. For 19818/19818 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1672 event pairs, 54 based on Foata normal form. 6/408 useless extension candidates. Maximal degree in co-relation 1616. Up to 245 conditions per place. [2024-06-21 20:13:10,133 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 52 selfloop transitions, 20 changer transitions 11/85 dead transitions. [2024-06-21 20:13:10,133 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 85 transitions, 602 flow [2024-06-21 20:13:10,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:13:10,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:13:10,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 113 transitions. [2024-06-21 20:13:10,134 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3210227272727273 [2024-06-21 20:13:10,134 INFO L175 Difference]: Start difference. First operand has 143 places, 66 transitions, 390 flow. Second operand 11 states and 113 transitions. [2024-06-21 20:13:10,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 85 transitions, 602 flow [2024-06-21 20:13:10,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 85 transitions, 576 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-21 20:13:10,156 INFO L231 Difference]: Finished difference. Result has 132 places, 62 transitions, 386 flow [2024-06-21 20:13:10,156 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=364, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=386, PETRI_PLACES=132, PETRI_TRANSITIONS=62} [2024-06-21 20:13:10,156 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 101 predicate places. [2024-06-21 20:13:10,156 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 62 transitions, 386 flow [2024-06-21 20:13:10,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 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) [2024-06-21 20:13:10,156 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:13:10,156 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:13:10,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable235 [2024-06-21 20:13:10,156 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)] === [2024-06-21 20:13:10,157 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:13:10,157 INFO L85 PathProgramCache]: Analyzing trace with hash 858622992, now seen corresponding path program 23 times [2024-06-21 20:13:10,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:13:10,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826843178] [2024-06-21 20:13:10,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:13:10,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:13:10,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:13:12,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:13:12,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:13:12,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826843178] [2024-06-21 20:13:12,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826843178] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:13:12,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:13:12,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-06-21 20:13:12,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794287211] [2024-06-21 20:13:12,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:13:12,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-06-21 20:13:12,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:13:12,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-06-21 20:13:12,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2024-06-21 20:13:12,235 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:13:12,236 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 62 transitions, 386 flow. Second operand has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:13:12,236 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:13:12,236 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:13:12,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:13:12,759 INFO L124 PetriNetUnfolderBase]: 179/378 cut-off events. [2024-06-21 20:13:12,759 INFO L125 PetriNetUnfolderBase]: For 16630/16630 co-relation queries the response was YES. [2024-06-21 20:13:12,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1592 conditions, 378 events. 179/378 cut-off events. For 16630/16630 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1547 event pairs, 54 based on Foata normal form. 6/384 useless extension candidates. Maximal degree in co-relation 1534. Up to 301 conditions per place. [2024-06-21 20:13:12,761 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 54 selfloop transitions, 9 changer transitions 14/79 dead transitions. [2024-06-21 20:13:12,761 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 79 transitions, 576 flow [2024-06-21 20:13:12,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 20:13:12,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 20:13:12,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 110 transitions. [2024-06-21 20:13:12,762 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2864583333333333 [2024-06-21 20:13:12,762 INFO L175 Difference]: Start difference. First operand has 132 places, 62 transitions, 386 flow. Second operand 12 states and 110 transitions. [2024-06-21 20:13:12,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 79 transitions, 576 flow [2024-06-21 20:13:12,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 79 transitions, 528 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-21 20:13:12,781 INFO L231 Difference]: Finished difference. Result has 127 places, 58 transitions, 341 flow [2024-06-21 20:13:12,781 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=338, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=341, PETRI_PLACES=127, PETRI_TRANSITIONS=58} [2024-06-21 20:13:12,781 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 96 predicate places. [2024-06-21 20:13:12,781 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 58 transitions, 341 flow [2024-06-21 20:13:12,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:13:12,781 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:13:12,781 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:13:12,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable236 [2024-06-21 20:13:12,782 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)] === [2024-06-21 20:13:12,782 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:13:12,782 INFO L85 PathProgramCache]: Analyzing trace with hash 2075233114, now seen corresponding path program 24 times [2024-06-21 20:13:12,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:13:12,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317888431] [2024-06-21 20:13:12,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:13:12,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:13:12,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:13:14,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:13:14,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:13:14,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317888431] [2024-06-21 20:13:14,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317888431] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:13:14,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:13:14,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-06-21 20:13:14,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595565918] [2024-06-21 20:13:14,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:13:14,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-06-21 20:13:14,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:13:14,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-06-21 20:13:14,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2024-06-21 20:13:14,646 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:13:14,646 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 58 transitions, 341 flow. Second operand has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:13:14,646 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:13:14,646 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:13:14,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:13:15,060 INFO L124 PetriNetUnfolderBase]: 165/352 cut-off events. [2024-06-21 20:13:15,060 INFO L125 PetriNetUnfolderBase]: For 14358/14358 co-relation queries the response was YES. [2024-06-21 20:13:15,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1455 conditions, 352 events. 165/352 cut-off events. For 14358/14358 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1414 event pairs, 50 based on Foata normal form. 6/358 useless extension candidates. Maximal degree in co-relation 1400. Up to 275 conditions per place. [2024-06-21 20:13:15,062 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 49 selfloop transitions, 7 changer transitions 17/75 dead transitions. [2024-06-21 20:13:15,062 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 75 transitions, 523 flow [2024-06-21 20:13:15,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 20:13:15,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 20:13:15,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 109 transitions. [2024-06-21 20:13:15,063 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2838541666666667 [2024-06-21 20:13:15,063 INFO L175 Difference]: Start difference. First operand has 127 places, 58 transitions, 341 flow. Second operand 12 states and 109 transitions. [2024-06-21 20:13:15,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 75 transitions, 523 flow [2024-06-21 20:13:15,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 75 transitions, 497 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-21 20:13:15,079 INFO L231 Difference]: Finished difference. Result has 121 places, 53 transitions, 310 flow [2024-06-21 20:13:15,079 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=315, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=310, PETRI_PLACES=121, PETRI_TRANSITIONS=53} [2024-06-21 20:13:15,079 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 90 predicate places. [2024-06-21 20:13:15,079 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 53 transitions, 310 flow [2024-06-21 20:13:15,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:13:15,079 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:13:15,079 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:13:15,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable237 [2024-06-21 20:13:15,079 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)] === [2024-06-21 20:13:15,080 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:13:15,080 INFO L85 PathProgramCache]: Analyzing trace with hash 1964410594, now seen corresponding path program 25 times [2024-06-21 20:13:15,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:13:15,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200261744] [2024-06-21 20:13:15,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:13:15,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:13:15,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:13:17,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:13:17,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:13:17,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200261744] [2024-06-21 20:13:17,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200261744] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:13:17,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:13:17,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-06-21 20:13:17,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618652662] [2024-06-21 20:13:17,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:13:17,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-06-21 20:13:17,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:13:17,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-06-21 20:13:17,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2024-06-21 20:13:17,463 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:13:17,464 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 53 transitions, 310 flow. Second operand has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:13:17,464 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:13:17,464 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:13:17,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:13:17,864 INFO L124 PetriNetUnfolderBase]: 147/318 cut-off events. [2024-06-21 20:13:17,864 INFO L125 PetriNetUnfolderBase]: For 12278/12278 co-relation queries the response was YES. [2024-06-21 20:13:17,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1322 conditions, 318 events. 147/318 cut-off events. For 12278/12278 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1220 event pairs, 44 based on Foata normal form. 6/324 useless extension candidates. Maximal degree in co-relation 1270. Up to 241 conditions per place. [2024-06-21 20:13:17,865 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 41 selfloop transitions, 4 changer transitions 21/68 dead transitions. [2024-06-21 20:13:17,866 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 68 transitions, 474 flow [2024-06-21 20:13:17,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:13:17,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:13:17,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 100 transitions. [2024-06-21 20:13:17,866 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2840909090909091 [2024-06-21 20:13:17,866 INFO L175 Difference]: Start difference. First operand has 121 places, 53 transitions, 310 flow. Second operand 11 states and 100 transitions. [2024-06-21 20:13:17,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 68 transitions, 474 flow [2024-06-21 20:13:17,877 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 68 transitions, 450 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-21 20:13:17,877 INFO L231 Difference]: Finished difference. Result has 112 places, 45 transitions, 254 flow [2024-06-21 20:13:17,878 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=286, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=254, PETRI_PLACES=112, PETRI_TRANSITIONS=45} [2024-06-21 20:13:17,878 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 81 predicate places. [2024-06-21 20:13:17,878 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 45 transitions, 254 flow [2024-06-21 20:13:17,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:13:17,878 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:13:17,878 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:13:17,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable238 [2024-06-21 20:13:17,879 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)] === [2024-06-21 20:13:17,879 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:13:17,879 INFO L85 PathProgramCache]: Analyzing trace with hash 1816818796, now seen corresponding path program 26 times [2024-06-21 20:13:17,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:13:17,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505546816] [2024-06-21 20:13:17,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:13:17,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:13:17,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:13:19,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:13:19,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:13:19,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505546816] [2024-06-21 20:13:19,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505546816] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:13:19,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:13:19,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-21 20:13:19,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448793069] [2024-06-21 20:13:19,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:13:19,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-21 20:13:19,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:13:19,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-21 20:13:19,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-06-21 20:13:19,579 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:13:19,579 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 45 transitions, 254 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-21 20:13:19,579 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:13:19,579 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:13:19,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:13:19,871 INFO L124 PetriNetUnfolderBase]: 110/239 cut-off events. [2024-06-21 20:13:19,872 INFO L125 PetriNetUnfolderBase]: For 6516/6516 co-relation queries the response was YES. [2024-06-21 20:13:19,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 868 conditions, 239 events. 110/239 cut-off events. For 6516/6516 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 816 event pairs, 23 based on Foata normal form. 6/245 useless extension candidates. Maximal degree in co-relation 820. Up to 124 conditions per place. [2024-06-21 20:13:19,873 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 36 selfloop transitions, 14 changer transitions 11/63 dead transitions. [2024-06-21 20:13:19,873 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 63 transitions, 418 flow [2024-06-21 20:13:19,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 20:13:19,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 20:13:19,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 110 transitions. [2024-06-21 20:13:19,873 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2864583333333333 [2024-06-21 20:13:19,873 INFO L175 Difference]: Start difference. First operand has 112 places, 45 transitions, 254 flow. Second operand 12 states and 110 transitions. [2024-06-21 20:13:19,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 63 transitions, 418 flow [2024-06-21 20:13:19,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 63 transitions, 388 flow, removed 10 selfloop flow, removed 13 redundant places. [2024-06-21 20:13:19,879 INFO L231 Difference]: Finished difference. Result has 98 places, 42 transitions, 244 flow [2024-06-21 20:13:19,879 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=244, PETRI_PLACES=98, PETRI_TRANSITIONS=42} [2024-06-21 20:13:19,879 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 67 predicate places. [2024-06-21 20:13:19,879 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 42 transitions, 244 flow [2024-06-21 20:13:19,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-21 20:13:19,879 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:13:19,879 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:13:19,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable239 [2024-06-21 20:13:19,879 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)] === [2024-06-21 20:13:19,880 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:13:19,880 INFO L85 PathProgramCache]: Analyzing trace with hash -1725726738, now seen corresponding path program 27 times [2024-06-21 20:13:19,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:13:19,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464196378] [2024-06-21 20:13:19,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:13:19,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:13:19,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:13:21,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:13:21,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:13:21,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464196378] [2024-06-21 20:13:21,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464196378] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:13:21,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:13:21,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-06-21 20:13:21,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876396204] [2024-06-21 20:13:21,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:13:21,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-06-21 20:13:21,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:13:21,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-06-21 20:13:21,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2024-06-21 20:13:21,634 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:13:21,634 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 42 transitions, 244 flow. Second operand has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:13:21,634 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:13:21,634 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:13:21,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:13:21,920 INFO L124 PetriNetUnfolderBase]: 100/221 cut-off events. [2024-06-21 20:13:21,920 INFO L125 PetriNetUnfolderBase]: For 4392/4392 co-relation queries the response was YES. [2024-06-21 20:13:21,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 789 conditions, 221 events. 100/221 cut-off events. For 4392/4392 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 728 event pairs, 21 based on Foata normal form. 6/227 useless extension candidates. Maximal degree in co-relation 748. Up to 106 conditions per place. [2024-06-21 20:13:21,921 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 30 selfloop transitions, 10 changer transitions 18/60 dead transitions. [2024-06-21 20:13:21,921 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 60 transitions, 398 flow [2024-06-21 20:13:21,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 20:13:21,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 20:13:21,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 109 transitions. [2024-06-21 20:13:21,922 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2838541666666667 [2024-06-21 20:13:21,922 INFO L175 Difference]: Start difference. First operand has 98 places, 42 transitions, 244 flow. Second operand 12 states and 109 transitions. [2024-06-21 20:13:21,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 60 transitions, 398 flow [2024-06-21 20:13:21,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 60 transitions, 364 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-21 20:13:21,925 INFO L231 Difference]: Finished difference. Result has 93 places, 36 transitions, 203 flow [2024-06-21 20:13:21,926 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=203, PETRI_PLACES=93, PETRI_TRANSITIONS=36} [2024-06-21 20:13:21,926 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 62 predicate places. [2024-06-21 20:13:21,926 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 36 transitions, 203 flow [2024-06-21 20:13:21,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:13:21,926 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:13:21,926 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:13:21,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable240 [2024-06-21 20:13:21,926 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)] === [2024-06-21 20:13:21,926 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:13:21,926 INFO L85 PathProgramCache]: Analyzing trace with hash -1087066830, now seen corresponding path program 28 times [2024-06-21 20:13:21,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:13:21,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475228499] [2024-06-21 20:13:21,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:13:21,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:13:21,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:13:23,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:13:23,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:13:23,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475228499] [2024-06-21 20:13:23,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475228499] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:13:23,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:13:23,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 20:13:23,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349927981] [2024-06-21 20:13:23,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:13:23,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 20:13:23,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:13:23,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 20:13:23,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-21 20:13:24,115 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:13:24,116 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 36 transitions, 203 flow. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 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) [2024-06-21 20:13:24,116 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:13:24,116 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:13:24,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:13:24,350 INFO L124 PetriNetUnfolderBase]: 85/188 cut-off events. [2024-06-21 20:13:24,350 INFO L125 PetriNetUnfolderBase]: For 3756/3756 co-relation queries the response was YES. [2024-06-21 20:13:24,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 679 conditions, 188 events. 85/188 cut-off events. For 3756/3756 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 565 event pairs, 27 based on Foata normal form. 6/194 useless extension candidates. Maximal degree in co-relation 640. Up to 96 conditions per place. [2024-06-21 20:13:24,351 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 27 selfloop transitions, 10 changer transitions 12/51 dead transitions. [2024-06-21 20:13:24,351 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 51 transitions, 333 flow [2024-06-21 20:13:24,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:13:24,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:13:24,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 99 transitions. [2024-06-21 20:13:24,352 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.28125 [2024-06-21 20:13:24,352 INFO L175 Difference]: Start difference. First operand has 93 places, 36 transitions, 203 flow. Second operand 11 states and 99 transitions. [2024-06-21 20:13:24,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 51 transitions, 333 flow [2024-06-21 20:13:24,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 51 transitions, 301 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-06-21 20:13:24,355 INFO L231 Difference]: Finished difference. Result has 82 places, 32 transitions, 174 flow [2024-06-21 20:13:24,355 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=171, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=174, PETRI_PLACES=82, PETRI_TRANSITIONS=32} [2024-06-21 20:13:24,355 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 51 predicate places. [2024-06-21 20:13:24,355 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 32 transitions, 174 flow [2024-06-21 20:13:24,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 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) [2024-06-21 20:13:24,355 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:13:24,356 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:13:24,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable241 [2024-06-21 20:13:24,356 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)] === [2024-06-21 20:13:24,356 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:13:24,356 INFO L85 PathProgramCache]: Analyzing trace with hash -1315140960, now seen corresponding path program 29 times [2024-06-21 20:13:24,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:13:24,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082551600] [2024-06-21 20:13:24,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:13:24,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:13:24,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:13:26,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:13:26,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:13:26,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082551600] [2024-06-21 20:13:26,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082551600] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:13:26,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:13:26,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-06-21 20:13:26,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610939177] [2024-06-21 20:13:26,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:13:26,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-06-21 20:13:26,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:13:26,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-06-21 20:13:26,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2024-06-21 20:13:26,430 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:13:26,431 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 32 transitions, 174 flow. Second operand has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:13:26,431 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:13:26,431 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:13:26,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:13:26,725 INFO L124 PetriNetUnfolderBase]: 73/164 cut-off events. [2024-06-21 20:13:26,725 INFO L125 PetriNetUnfolderBase]: For 2406/2406 co-relation queries the response was YES. [2024-06-21 20:13:26,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 580 conditions, 164 events. 73/164 cut-off events. For 2406/2406 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 459 event pairs, 19 based on Foata normal form. 6/170 useless extension candidates. Maximal degree in co-relation 546. Up to 78 conditions per place. [2024-06-21 20:13:26,725 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 23 selfloop transitions, 8 changer transitions 16/49 dead transitions. [2024-06-21 20:13:26,726 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 49 transitions, 304 flow [2024-06-21 20:13:26,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 20:13:26,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 20:13:26,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 105 transitions. [2024-06-21 20:13:26,726 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2734375 [2024-06-21 20:13:26,726 INFO L175 Difference]: Start difference. First operand has 82 places, 32 transitions, 174 flow. Second operand 12 states and 105 transitions. [2024-06-21 20:13:26,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 49 transitions, 304 flow [2024-06-21 20:13:26,728 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 49 transitions, 276 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-21 20:13:26,728 INFO L231 Difference]: Finished difference. Result has 77 places, 27 transitions, 141 flow [2024-06-21 20:13:26,728 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=141, PETRI_PLACES=77, PETRI_TRANSITIONS=27} [2024-06-21 20:13:26,729 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 46 predicate places. [2024-06-21 20:13:26,729 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 27 transitions, 141 flow [2024-06-21 20:13:26,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:13:26,729 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:13:26,729 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:13:26,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable242 [2024-06-21 20:13:26,729 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)] === [2024-06-21 20:13:26,729 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:13:26,729 INFO L85 PathProgramCache]: Analyzing trace with hash 1096438142, now seen corresponding path program 30 times [2024-06-21 20:13:26,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:13:26,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873766140] [2024-06-21 20:13:26,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:13:26,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:13:26,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:13:28,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:13:28,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:13:28,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873766140] [2024-06-21 20:13:28,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873766140] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:13:28,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:13:28,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-21 20:13:28,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195147220] [2024-06-21 20:13:28,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:13:28,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-21 20:13:28,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:13:28,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-21 20:13:28,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-06-21 20:13:28,971 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:13:28,971 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 27 transitions, 141 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-21 20:13:28,971 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:13:28,971 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:13:28,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:13:29,154 INFO L124 PetriNetUnfolderBase]: 57/132 cut-off events. [2024-06-21 20:13:29,155 INFO L125 PetriNetUnfolderBase]: For 1730/1730 co-relation queries the response was YES. [2024-06-21 20:13:29,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 469 conditions, 132 events. 57/132 cut-off events. For 1730/1730 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 323 event pairs, 17 based on Foata normal form. 6/138 useless extension candidates. Maximal degree in co-relation 438. Up to 60 conditions per place. [2024-06-21 20:13:29,155 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 19 selfloop transitions, 7 changer transitions 14/42 dead transitions. [2024-06-21 20:13:29,155 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 42 transitions, 253 flow [2024-06-21 20:13:29,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 20:13:29,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 20:13:29,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 101 transitions. [2024-06-21 20:13:29,156 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2630208333333333 [2024-06-21 20:13:29,156 INFO L175 Difference]: Start difference. First operand has 77 places, 27 transitions, 141 flow. Second operand 12 states and 101 transitions. [2024-06-21 20:13:29,156 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 42 transitions, 253 flow [2024-06-21 20:13:29,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 42 transitions, 225 flow, removed 5 selfloop flow, removed 13 redundant places. [2024-06-21 20:13:29,157 INFO L231 Difference]: Finished difference. Result has 68 places, 23 transitions, 112 flow [2024-06-21 20:13:29,157 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=113, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=112, PETRI_PLACES=68, PETRI_TRANSITIONS=23} [2024-06-21 20:13:29,157 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 37 predicate places. [2024-06-21 20:13:29,158 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 23 transitions, 112 flow [2024-06-21 20:13:29,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-21 20:13:29,158 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:13:29,158 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:13:29,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable243 [2024-06-21 20:13:29,158 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)] === [2024-06-21 20:13:29,158 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:13:29,158 INFO L85 PathProgramCache]: Analyzing trace with hash 1091969492, now seen corresponding path program 31 times [2024-06-21 20:13:29,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:13:29,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903075484] [2024-06-21 20:13:29,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:13:29,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:13:29,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:13:30,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:13:30,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:13:30,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903075484] [2024-06-21 20:13:30,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903075484] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:13:30,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:13:30,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-06-21 20:13:30,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062474289] [2024-06-21 20:13:30,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:13:30,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-06-21 20:13:30,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:13:30,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-06-21 20:13:30,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2024-06-21 20:13:31,014 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 20:13:31,014 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 23 transitions, 112 flow. Second operand has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:13:31,014 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:13:31,014 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 20:13:31,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:13:31,219 INFO L124 PetriNetUnfolderBase]: 28/73 cut-off events. [2024-06-21 20:13:31,220 INFO L125 PetriNetUnfolderBase]: For 512/512 co-relation queries the response was YES. [2024-06-21 20:13:31,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 217 conditions, 73 events. 28/73 cut-off events. For 512/512 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 106 event pairs, 0 based on Foata normal form. 6/79 useless extension candidates. Maximal degree in co-relation 190. Up to 24 conditions per place. [2024-06-21 20:13:31,220 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 0 selfloop transitions, 0 changer transitions 33/33 dead transitions. [2024-06-21 20:13:31,220 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 33 transitions, 168 flow [2024-06-21 20:13:31,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 20:13:31,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 20:13:31,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 92 transitions. [2024-06-21 20:13:31,221 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.23958333333333334 [2024-06-21 20:13:31,221 INFO L175 Difference]: Start difference. First operand has 68 places, 23 transitions, 112 flow. Second operand 12 states and 92 transitions. [2024-06-21 20:13:31,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 33 transitions, 168 flow [2024-06-21 20:13:31,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 33 transitions, 134 flow, removed 1 selfloop flow, removed 17 redundant places. [2024-06-21 20:13:31,221 INFO L231 Difference]: Finished difference. Result has 54 places, 0 transitions, 0 flow [2024-06-21 20:13:31,221 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=0, PETRI_PLACES=54, PETRI_TRANSITIONS=0} [2024-06-21 20:13:31,221 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 23 predicate places. [2024-06-21 20:13:31,222 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 0 transitions, 0 flow [2024-06-21 20:13:31,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:13:31,224 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-06-21 20:13:31,225 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 4 remaining) [2024-06-21 20:13:31,225 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-06-21 20:13:31,226 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-06-21 20:13:31,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable244 [2024-06-21 20:13:31,226 INFO L445 BasicCegarLoop]: Path program histogram: [36, 31, 28, 22, 19, 19, 14, 11, 8, 7, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:13:31,229 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-21 20:13:31,229 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-21 20:13:31,233 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-21 20:13:31,233 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-21 20:13:31,234 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.06 08:13:31 BasicIcfg [2024-06-21 20:13:31,234 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-21 20:13:31,235 INFO L158 Benchmark]: Toolchain (without parser) took 652651.59ms. Allocated memory was 167.8MB in the beginning and 2.5GB in the end (delta: 2.4GB). Free memory was 136.5MB in the beginning and 1.4GB in the end (delta: -1.3GB). Peak memory consumption was 1.1GB. Max. memory is 16.1GB. [2024-06-21 20:13:31,235 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 167.8MB. Free memory is still 137.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-21 20:13:31,235 INFO L158 Benchmark]: Witness Parser took 0.20ms. Allocated memory is still 167.8MB. Free memory was 136.0MB in the beginning and 136.0MB in the end (delta: 36.0kB). There was no memory consumed. Max. memory is 16.1GB. [2024-06-21 20:13:31,235 INFO L158 Benchmark]: CACSL2BoogieTranslator took 681.92ms. Allocated memory is still 167.8MB. Free memory was 136.5MB in the beginning and 98.7MB in the end (delta: 37.8MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. [2024-06-21 20:13:31,236 INFO L158 Benchmark]: Boogie Procedure Inliner took 73.25ms. Allocated memory is still 167.8MB. Free memory was 98.7MB in the beginning and 95.4MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-21 20:13:31,236 INFO L158 Benchmark]: Boogie Preprocessor took 49.33ms. Allocated memory is still 167.8MB. Free memory was 95.4MB in the beginning and 91.3MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-21 20:13:31,236 INFO L158 Benchmark]: RCFGBuilder took 993.51ms. Allocated memory was 167.8MB in the beginning and 209.7MB in the end (delta: 41.9MB). Free memory was 90.3MB in the beginning and 172.9MB in the end (delta: -82.6MB). Peak memory consumption was 26.2MB. Max. memory is 16.1GB. [2024-06-21 20:13:31,237 INFO L158 Benchmark]: TraceAbstraction took 650847.20ms. Allocated memory was 209.7MB in the beginning and 2.5GB in the end (delta: 2.3GB). Free memory was 171.9MB in the beginning and 1.4GB in the end (delta: -1.2GB). Peak memory consumption was 1.1GB. Max. memory is 16.1GB. [2024-06-21 20:13:31,238 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 167.8MB. Free memory is still 137.6MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.20ms. Allocated memory is still 167.8MB. Free memory was 136.0MB in the beginning and 136.0MB in the end (delta: 36.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 681.92ms. Allocated memory is still 167.8MB. Free memory was 136.5MB in the beginning and 98.7MB in the end (delta: 37.8MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 73.25ms. Allocated memory is still 167.8MB. Free memory was 98.7MB in the beginning and 95.4MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 49.33ms. Allocated memory is still 167.8MB. Free memory was 95.4MB in the beginning and 91.3MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 993.51ms. Allocated memory was 167.8MB in the beginning and 209.7MB in the end (delta: 41.9MB). Free memory was 90.3MB in the beginning and 172.9MB in the end (delta: -82.6MB). Peak memory consumption was 26.2MB. Max. memory is 16.1GB. * TraceAbstraction took 650847.20ms. Allocated memory was 209.7MB in the beginning and 2.5GB in the end (delta: 2.3GB). Free memory was 171.9MB in the beginning and 1.4GB in the end (delta: -1.2GB). Peak memory consumption was 1.1GB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 838]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 839]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 52 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 650.7s, OverallIterations: 245, TraceHistogramMax: 1, PathProgramHistogramMax: 36, EmptinessCheckTime: 0.0s, AutomataDifference: 304.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 14462 SdHoareTripleChecker+Valid, 82.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 12581 mSDsluCounter, 9820 SdHoareTripleChecker+Invalid, 71.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 8378 mSDsCounter, 4915 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 127746 IncrementalHoareTripleChecker+Invalid, 132661 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4915 mSolverCounterUnsat, 1442 mSDtfsCounter, 127746 mSolverCounterSat, 0.5s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3452 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 3429 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9275 ImplicationChecksByTransitivity, 108.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4174occurred in iteration=143, InterpolantAutomatonStates: 2520, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 2.5s SatisfiabilityAnalysisTime, 341.9s InterpolantComputationTime, 4278 NumberOfCodeBlocks, 4278 NumberOfCodeBlocksAsserted, 245 NumberOfCheckSat, 4033 ConstructedInterpolants, 0 QuantifiedInterpolants, 197764 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 245 InterpolantComputations, 245 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-06-21 20:13:31,358 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE