./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix009.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix009.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/mix009.opt.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix009.opt.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-28 02:56:58,401 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 02:56:58,485 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 02:56:58,488 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 02:56:58,489 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 02:56:58,501 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 02:56:58,501 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 02:56:58,501 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 02:56:58,502 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 02:56:58,502 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 02:56:58,502 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 02:56:58,502 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 02:56:58,503 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 02:56:58,503 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 02:56:58,503 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 02:56:58,504 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 02:56:58,504 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 02:56:58,504 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 02:56:58,504 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 02:56:58,505 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 02:56:58,505 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 02:56:58,505 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 02:56:58,506 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 02:56:58,506 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 02:56:58,506 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 02:56:58,506 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 02:56:58,507 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 02:56:58,507 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 02:56:58,507 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 02:56:58,507 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 02:56:58,508 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 02:56:58,508 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 02:56:58,508 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 02:56:58,508 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 02:56:58,509 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 02:56:58,509 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 02:56:58,509 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 02:56:58,509 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 02:56:58,509 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 02:56:58,510 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 02:56:58,510 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 02:56:58,510 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 02:56:58,510 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 02:56:58,510 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-28 02:56:58,681 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 02:56:58,707 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 02:56:58,710 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 02:56:58,711 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 02:56:58,711 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 02:56:58,712 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix009.opt.i [2024-06-28 02:56:59,713 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 02:56:59,930 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 02:56:59,930 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix009.opt.i [2024-06-28 02:56:59,941 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/64dabe67d/dd6c7ec528f04a7e9db9717b93310ebe/FLAGbe70dbfd6 [2024-06-28 02:56:59,952 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/64dabe67d/dd6c7ec528f04a7e9db9717b93310ebe [2024-06-28 02:56:59,954 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 02:56:59,954 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 02:56:59,954 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix009.opt.yml/witness.yml [2024-06-28 02:57:00,095 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 02:57:00,096 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 02:57:00,098 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 02:57:00,099 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 02:57:00,102 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 02:57:00,103 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 02:56:59" (1/2) ... [2024-06-28 02:57:00,104 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72bc2d30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:57:00, skipping insertion in model container [2024-06-28 02:57:00,105 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 02:56:59" (1/2) ... [2024-06-28 02:57:00,106 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@144bb36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:57:00, skipping insertion in model container [2024-06-28 02:57:00,106 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 02:57:00" (2/2) ... [2024-06-28 02:57:00,107 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72bc2d30 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:57:00, skipping insertion in model container [2024-06-28 02:57:00,107 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 02:57:00" (2/2) ... [2024-06-28 02:57:00,107 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 02:57:00,156 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 02:57:00,158 INFO L97 edCorrectnessWitness]: Location invariant before [L835-L835] (((((((((((((((((! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (! multithreaded || (x == 0 || x == 1))) && (! 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$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (y$mem_tmp == 0 || y$mem_tmp == 1)) && (y$w_buff0 == 0 || y$w_buff0 == 1)) && (y$w_buff1 == 0 || y$w_buff1 == 1)) && (z == 0 || z == 1)))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 1))) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || (y$mem_tmp == 0 || y$mem_tmp == 1))) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 1))) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || y$read_delayed == (_Bool)0) [2024-06-28 02:57:00,158 INFO L97 edCorrectnessWitness]: Location invariant before [L834-L834] (((((((((((((((((! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (((((((((((((((((0 <= __unbuffered_cnt && y$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)) && (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (y$mem_tmp == 0 || y$mem_tmp == 1)) && (y$w_buff0 == 0 || y$w_buff0 == 1)) && (y$w_buff1 == 0 || y$w_buff1 == 1)) && (z == 0 || z == 1)))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 1))) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || (y$mem_tmp == 0 || y$mem_tmp == 1))) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 1))) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || y$read_delayed == (_Bool)0) [2024-06-28 02:57:00,158 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 02:57:00,158 INFO L106 edCorrectnessWitness]: ghost_update [L832-L832] multithreaded = 1; [2024-06-28 02:57:00,195 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 02:57:00,516 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 02:57:00,524 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 02:57:00,653 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 02:57:00,687 INFO L206 MainTranslator]: Completed translation [2024-06-28 02:57:00,688 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:57:00 WrapperNode [2024-06-28 02:57:00,689 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 02:57:00,689 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 02:57:00,689 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 02:57:00,690 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 02:57:00,696 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:57:00" (1/1) ... [2024-06-28 02:57:00,725 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:57:00" (1/1) ... [2024-06-28 02:57:00,749 INFO L138 Inliner]: procedures = 174, calls = 40, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 138 [2024-06-28 02:57:00,750 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 02:57:00,756 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 02:57:00,756 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 02:57:00,756 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 02:57:00,765 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:57:00" (1/1) ... [2024-06-28 02:57:00,765 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:57:00" (1/1) ... [2024-06-28 02:57:00,767 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:57:00" (1/1) ... [2024-06-28 02:57:00,801 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-28 02:57:00,801 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:57:00" (1/1) ... [2024-06-28 02:57:00,801 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:57:00" (1/1) ... [2024-06-28 02:57:00,808 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:57:00" (1/1) ... [2024-06-28 02:57:00,810 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:57:00" (1/1) ... [2024-06-28 02:57:00,811 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:57:00" (1/1) ... [2024-06-28 02:57:00,812 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:57:00" (1/1) ... [2024-06-28 02:57:00,815 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 02:57:00,816 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 02:57:00,816 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 02:57:00,816 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 02:57:00,816 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:57:00" (1/1) ... [2024-06-28 02:57:00,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 02:57:00,838 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 02:57:00,852 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-28 02:57:00,860 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-28 02:57:00,884 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 02:57:00,885 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 02:57:00,885 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 02:57:00,885 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 02:57:00,885 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 02:57:00,885 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 02:57:00,885 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 02:57:00,886 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 02:57:00,886 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 02:57:00,886 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 02:57:00,887 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-28 02:57:01,006 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 02:57:01,008 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 02:57:01,306 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 02:57:01,307 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 02:57:01,452 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 02:57:01,452 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 02:57:01,457 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 02:57:01 BoogieIcfgContainer [2024-06-28 02:57:01,457 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 02:57:01,458 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 02:57:01,458 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 02:57:01,460 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 02:57:01,461 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 02:56:59" (1/4) ... [2024-06-28 02:57:01,461 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d566759 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 02:57:01, skipping insertion in model container [2024-06-28 02:57:01,461 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 02:57:00" (2/4) ... [2024-06-28 02:57:01,462 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d566759 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 02:57:01, skipping insertion in model container [2024-06-28 02:57:01,462 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:57:00" (3/4) ... [2024-06-28 02:57:01,462 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d566759 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 02:57:01, skipping insertion in model container [2024-06-28 02:57:01,462 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 02:57:01" (4/4) ... [2024-06-28 02:57:01,463 INFO L112 eAbstractionObserver]: Analyzing ICFG mix009.opt.i [2024-06-28 02:57:01,476 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 02:57:01,476 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-28 02:57:01,476 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 02:57:01,509 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 02:57:01,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 39 places, 32 transitions, 72 flow [2024-06-28 02:57:01,562 INFO L124 PetriNetUnfolderBase]: 0/30 cut-off events. [2024-06-28 02:57:01,562 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 02:57:01,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37 conditions, 30 events. 0/30 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 47 event pairs, 0 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-28 02:57:01,564 INFO L82 GeneralOperation]: Start removeDead. Operand has 39 places, 32 transitions, 72 flow [2024-06-28 02:57:01,569 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 31 places, 24 transitions, 54 flow [2024-06-28 02:57:01,581 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 02:57:01,586 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;@7b479e4b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 02:57:01,587 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-28 02:57:01,590 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 02:57:01,590 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-28 02:57:01,590 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 02:57:01,591 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:01,591 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 02:57:01,592 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:57:01,595 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:01,595 INFO L85 PathProgramCache]: Analyzing trace with hash 364831899, now seen corresponding path program 1 times [2024-06-28 02:57:01,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:01,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582103003] [2024-06-28 02:57:01,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:01,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:01,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:02,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:57:02,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:02,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582103003] [2024-06-28 02:57:02,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582103003] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:02,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:02,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 02:57:02,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997002442] [2024-06-28 02:57:02,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:02,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 02:57:02,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:02,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 02:57:02,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 02:57:02,518 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2024-06-28 02:57:02,520 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 24 transitions, 54 flow. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:02,521 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:02,521 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2024-06-28 02:57:02,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:02,646 INFO L124 PetriNetUnfolderBase]: 162/316 cut-off events. [2024-06-28 02:57:02,646 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-06-28 02:57:02,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 627 conditions, 316 events. 162/316 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1286 event pairs, 97 based on Foata normal form. 1/303 useless extension candidates. Maximal degree in co-relation 616. Up to 288 conditions per place. [2024-06-28 02:57:02,652 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 21 selfloop transitions, 3 changer transitions 0/30 dead transitions. [2024-06-28 02:57:02,652 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 30 transitions, 117 flow [2024-06-28 02:57:02,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 02:57:02,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 02:57:02,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 59 transitions. [2024-06-28 02:57:02,661 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6145833333333334 [2024-06-28 02:57:02,663 INFO L175 Difference]: Start difference. First operand has 31 places, 24 transitions, 54 flow. Second operand 3 states and 59 transitions. [2024-06-28 02:57:02,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 30 transitions, 117 flow [2024-06-28 02:57:02,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 30 transitions, 114 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-28 02:57:02,667 INFO L231 Difference]: Finished difference. Result has 32 places, 26 transitions, 73 flow [2024-06-28 02:57:02,668 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=73, PETRI_PLACES=32, PETRI_TRANSITIONS=26} [2024-06-28 02:57:02,671 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 1 predicate places. [2024-06-28 02:57:02,671 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 26 transitions, 73 flow [2024-06-28 02:57:02,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:02,671 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:02,672 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:02,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 02:57:02,672 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:57:02,673 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:02,673 INFO L85 PathProgramCache]: Analyzing trace with hash -1583835590, now seen corresponding path program 1 times [2024-06-28 02:57:02,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:02,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798314661] [2024-06-28 02:57:02,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:02,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:02,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:03,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:57:03,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:03,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798314661] [2024-06-28 02:57:03,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798314661] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:03,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:03,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 02:57:03,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789931794] [2024-06-28 02:57:03,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:03,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 02:57:03,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:03,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 02:57:03,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-28 02:57:03,104 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 32 [2024-06-28 02:57:03,105 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 26 transitions, 73 flow. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 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) [2024-06-28 02:57:03,105 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:03,105 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 32 [2024-06-28 02:57:03,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:03,216 INFO L124 PetriNetUnfolderBase]: 186/346 cut-off events. [2024-06-28 02:57:03,216 INFO L125 PetriNetUnfolderBase]: For 69/69 co-relation queries the response was YES. [2024-06-28 02:57:03,219 INFO L83 FinitePrefix]: Finished finitePrefix Result has 788 conditions, 346 events. 186/346 cut-off events. For 69/69 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1381 event pairs, 94 based on Foata normal form. 2/345 useless extension candidates. Maximal degree in co-relation 776. Up to 319 conditions per place. [2024-06-28 02:57:03,221 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 26 selfloop transitions, 5 changer transitions 0/36 dead transitions. [2024-06-28 02:57:03,222 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 36 transitions, 161 flow [2024-06-28 02:57:03,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 02:57:03,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 02:57:03,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 73 transitions. [2024-06-28 02:57:03,225 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5703125 [2024-06-28 02:57:03,226 INFO L175 Difference]: Start difference. First operand has 32 places, 26 transitions, 73 flow. Second operand 4 states and 73 transitions. [2024-06-28 02:57:03,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 36 transitions, 161 flow [2024-06-28 02:57:03,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 36 transitions, 158 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 02:57:03,238 INFO L231 Difference]: Finished difference. Result has 35 places, 28 transitions, 97 flow [2024-06-28 02:57:03,239 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=97, PETRI_PLACES=35, PETRI_TRANSITIONS=28} [2024-06-28 02:57:03,239 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 4 predicate places. [2024-06-28 02:57:03,239 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 28 transitions, 97 flow [2024-06-28 02:57:03,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 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) [2024-06-28 02:57:03,240 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:03,240 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:03,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 02:57:03,241 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:57:03,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:03,243 INFO L85 PathProgramCache]: Analyzing trace with hash -1854262106, now seen corresponding path program 1 times [2024-06-28 02:57:03,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:03,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694533840] [2024-06-28 02:57:03,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:03,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:03,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:03,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:57:03,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:03,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694533840] [2024-06-28 02:57:03,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694533840] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:03,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:03,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 02:57:03,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393794396] [2024-06-28 02:57:03,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:03,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 02:57:03,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:03,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 02:57:03,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-28 02:57:03,839 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-28 02:57:03,839 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 28 transitions, 97 flow. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:03,839 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:03,839 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-28 02:57:03,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:03,925 INFO L124 PetriNetUnfolderBase]: 219/397 cut-off events. [2024-06-28 02:57:03,926 INFO L125 PetriNetUnfolderBase]: For 228/228 co-relation queries the response was YES. [2024-06-28 02:57:03,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1003 conditions, 397 events. 219/397 cut-off events. For 228/228 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1503 event pairs, 99 based on Foata normal form. 2/396 useless extension candidates. Maximal degree in co-relation 989. Up to 366 conditions per place. [2024-06-28 02:57:03,928 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 31 selfloop transitions, 7 changer transitions 0/42 dead transitions. [2024-06-28 02:57:03,928 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 42 transitions, 211 flow [2024-06-28 02:57:03,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 02:57:03,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 02:57:03,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 85 transitions. [2024-06-28 02:57:03,929 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.53125 [2024-06-28 02:57:03,929 INFO L175 Difference]: Start difference. First operand has 35 places, 28 transitions, 97 flow. Second operand 5 states and 85 transitions. [2024-06-28 02:57:03,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 42 transitions, 211 flow [2024-06-28 02:57:03,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 42 transitions, 202 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-28 02:57:03,931 INFO L231 Difference]: Finished difference. Result has 38 places, 30 transitions, 121 flow [2024-06-28 02:57:03,931 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=121, PETRI_PLACES=38, PETRI_TRANSITIONS=30} [2024-06-28 02:57:03,932 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 7 predicate places. [2024-06-28 02:57:03,932 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 30 transitions, 121 flow [2024-06-28 02:57:03,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:03,932 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:03,932 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:03,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 02:57:03,933 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:57:03,933 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:03,933 INFO L85 PathProgramCache]: Analyzing trace with hash -1592138219, now seen corresponding path program 1 times [2024-06-28 02:57:03,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:03,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657094974] [2024-06-28 02:57:03,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:03,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:03,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:04,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:57:04,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:04,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657094974] [2024-06-28 02:57:04,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657094974] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:04,506 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:04,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 02:57:04,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154497159] [2024-06-28 02:57:04,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:04,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 02:57:04,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:04,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 02:57:04,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-28 02:57:04,551 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-28 02:57:04,551 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 30 transitions, 121 flow. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:04,551 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:04,552 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-28 02:57:04,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:04,662 INFO L124 PetriNetUnfolderBase]: 213/387 cut-off events. [2024-06-28 02:57:04,663 INFO L125 PetriNetUnfolderBase]: For 386/386 co-relation queries the response was YES. [2024-06-28 02:57:04,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1063 conditions, 387 events. 213/387 cut-off events. For 386/386 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1454 event pairs, 57 based on Foata normal form. 4/389 useless extension candidates. Maximal degree in co-relation 1048. Up to 338 conditions per place. [2024-06-28 02:57:04,666 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 36 selfloop transitions, 9 changer transitions 0/49 dead transitions. [2024-06-28 02:57:04,666 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 49 transitions, 263 flow [2024-06-28 02:57:04,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:57:04,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:57:04,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 101 transitions. [2024-06-28 02:57:04,670 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5260416666666666 [2024-06-28 02:57:04,670 INFO L175 Difference]: Start difference. First operand has 38 places, 30 transitions, 121 flow. Second operand 6 states and 101 transitions. [2024-06-28 02:57:04,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 49 transitions, 263 flow [2024-06-28 02:57:04,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 49 transitions, 248 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-28 02:57:04,673 INFO L231 Difference]: Finished difference. Result has 41 places, 32 transitions, 145 flow [2024-06-28 02:57:04,673 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=145, PETRI_PLACES=41, PETRI_TRANSITIONS=32} [2024-06-28 02:57:04,674 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 10 predicate places. [2024-06-28 02:57:04,675 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 32 transitions, 145 flow [2024-06-28 02:57:04,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:04,675 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:04,675 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:04,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 02:57:04,675 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:57:04,676 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:04,676 INFO L85 PathProgramCache]: Analyzing trace with hash 22408742, now seen corresponding path program 1 times [2024-06-28 02:57:04,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:04,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817006867] [2024-06-28 02:57:04,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:04,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:04,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:05,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:57:05,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:05,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817006867] [2024-06-28 02:57:05,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817006867] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:05,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:05,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 02:57:05,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938766803] [2024-06-28 02:57:05,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:05,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 02:57:05,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:05,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 02:57:05,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-28 02:57:05,261 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-28 02:57:05,262 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 32 transitions, 145 flow. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 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) [2024-06-28 02:57:05,262 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:05,262 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-28 02:57:05,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:05,406 INFO L124 PetriNetUnfolderBase]: 165/333 cut-off events. [2024-06-28 02:57:05,406 INFO L125 PetriNetUnfolderBase]: For 475/475 co-relation queries the response was YES. [2024-06-28 02:57:05,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 963 conditions, 333 events. 165/333 cut-off events. For 475/475 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1320 event pairs, 61 based on Foata normal form. 1/332 useless extension candidates. Maximal degree in co-relation 946. Up to 291 conditions per place. [2024-06-28 02:57:05,408 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 27 selfloop transitions, 6 changer transitions 0/39 dead transitions. [2024-06-28 02:57:05,408 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 39 transitions, 229 flow [2024-06-28 02:57:05,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 02:57:05,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 02:57:05,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 74 transitions. [2024-06-28 02:57:05,409 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4625 [2024-06-28 02:57:05,409 INFO L175 Difference]: Start difference. First operand has 41 places, 32 transitions, 145 flow. Second operand 5 states and 74 transitions. [2024-06-28 02:57:05,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 39 transitions, 229 flow [2024-06-28 02:57:05,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 39 transitions, 208 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-28 02:57:05,411 INFO L231 Difference]: Finished difference. Result has 42 places, 34 transitions, 151 flow [2024-06-28 02:57:05,411 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=151, PETRI_PLACES=42, PETRI_TRANSITIONS=34} [2024-06-28 02:57:05,412 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 11 predicate places. [2024-06-28 02:57:05,413 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 34 transitions, 151 flow [2024-06-28 02:57:05,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 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) [2024-06-28 02:57:05,414 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:05,414 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:05,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 02:57:05,414 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)] === [2024-06-28 02:57:05,414 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:05,414 INFO L85 PathProgramCache]: Analyzing trace with hash 694672028, now seen corresponding path program 1 times [2024-06-28 02:57:05,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:05,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165241041] [2024-06-28 02:57:05,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:05,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:05,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:06,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:57:06,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:06,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165241041] [2024-06-28 02:57:06,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165241041] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:06,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:06,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:57:06,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873787540] [2024-06-28 02:57:06,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:06,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:57:06,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:06,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:57:06,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:57:06,286 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-28 02:57:06,286 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 34 transitions, 151 flow. Second operand has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:06,287 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:06,287 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-28 02:57:06,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:06,410 INFO L124 PetriNetUnfolderBase]: 163/330 cut-off events. [2024-06-28 02:57:06,410 INFO L125 PetriNetUnfolderBase]: For 597/597 co-relation queries the response was YES. [2024-06-28 02:57:06,411 INFO L83 FinitePrefix]: Finished finitePrefix Result has 996 conditions, 330 events. 163/330 cut-off events. For 597/597 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1300 event pairs, 60 based on Foata normal form. 1/329 useless extension candidates. Maximal degree in co-relation 977. Up to 285 conditions per place. [2024-06-28 02:57:06,412 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 28 selfloop transitions, 8 changer transitions 0/42 dead transitions. [2024-06-28 02:57:06,412 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 42 transitions, 245 flow [2024-06-28 02:57:06,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:57:06,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:57:06,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 86 transitions. [2024-06-28 02:57:06,414 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4479166666666667 [2024-06-28 02:57:06,414 INFO L175 Difference]: Start difference. First operand has 42 places, 34 transitions, 151 flow. Second operand 6 states and 86 transitions. [2024-06-28 02:57:06,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 42 transitions, 245 flow [2024-06-28 02:57:06,415 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 42 transitions, 234 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-28 02:57:06,416 INFO L231 Difference]: Finished difference. Result has 45 places, 36 transitions, 173 flow [2024-06-28 02:57:06,416 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=173, PETRI_PLACES=45, PETRI_TRANSITIONS=36} [2024-06-28 02:57:06,416 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 14 predicate places. [2024-06-28 02:57:06,417 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 36 transitions, 173 flow [2024-06-28 02:57:06,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:06,417 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:06,417 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:06,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 02:57:06,417 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:57:06,418 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:06,418 INFO L85 PathProgramCache]: Analyzing trace with hash 459579635, now seen corresponding path program 1 times [2024-06-28 02:57:06,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:06,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730464764] [2024-06-28 02:57:06,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:06,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:06,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:06,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:57:06,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:06,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730464764] [2024-06-28 02:57:06,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730464764] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:06,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:06,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:57:06,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058388034] [2024-06-28 02:57:06,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:06,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:57:06,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:06,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:57:06,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:57:06,979 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 02:57:06,979 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 36 transitions, 173 flow. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:06,979 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:06,979 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 02:57:06,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:07,135 INFO L124 PetriNetUnfolderBase]: 193/366 cut-off events. [2024-06-28 02:57:07,135 INFO L125 PetriNetUnfolderBase]: For 913/913 co-relation queries the response was YES. [2024-06-28 02:57:07,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1209 conditions, 366 events. 193/366 cut-off events. For 913/913 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1398 event pairs, 71 based on Foata normal form. 1/365 useless extension candidates. Maximal degree in co-relation 1189. Up to 331 conditions per place. [2024-06-28 02:57:07,138 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 34 selfloop transitions, 8 changer transitions 0/47 dead transitions. [2024-06-28 02:57:07,138 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 47 transitions, 287 flow [2024-06-28 02:57:07,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:57:07,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:57:07,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 84 transitions. [2024-06-28 02:57:07,139 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-06-28 02:57:07,139 INFO L175 Difference]: Start difference. First operand has 45 places, 36 transitions, 173 flow. Second operand 6 states and 84 transitions. [2024-06-28 02:57:07,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 47 transitions, 287 flow [2024-06-28 02:57:07,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 47 transitions, 270 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-28 02:57:07,141 INFO L231 Difference]: Finished difference. Result has 47 places, 38 transitions, 189 flow [2024-06-28 02:57:07,141 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=189, PETRI_PLACES=47, PETRI_TRANSITIONS=38} [2024-06-28 02:57:07,142 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 16 predicate places. [2024-06-28 02:57:07,142 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 38 transitions, 189 flow [2024-06-28 02:57:07,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:07,142 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:07,142 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:07,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 02:57:07,142 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:57:07,143 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:07,143 INFO L85 PathProgramCache]: Analyzing trace with hash 59987525, now seen corresponding path program 2 times [2024-06-28 02:57:07,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:07,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088663211] [2024-06-28 02:57:07,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:07,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:07,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:07,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:57:07,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:07,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088663211] [2024-06-28 02:57:07,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088663211] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:07,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:07,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:57:07,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081962177] [2024-06-28 02:57:07,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:07,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:57:07,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:07,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:57:07,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:57:07,682 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 02:57:07,683 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 38 transitions, 189 flow. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:07,683 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:07,683 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 02:57:07,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:07,834 INFO L124 PetriNetUnfolderBase]: 191/364 cut-off events. [2024-06-28 02:57:07,834 INFO L125 PetriNetUnfolderBase]: For 1196/1202 co-relation queries the response was YES. [2024-06-28 02:57:07,835 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1270 conditions, 364 events. 191/364 cut-off events. For 1196/1202 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1419 event pairs, 75 based on Foata normal form. 5/366 useless extension candidates. Maximal degree in co-relation 1249. Up to 322 conditions per place. [2024-06-28 02:57:07,836 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 30 selfloop transitions, 11 changer transitions 0/46 dead transitions. [2024-06-28 02:57:07,836 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 46 transitions, 297 flow [2024-06-28 02:57:07,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:57:07,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:57:07,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 83 transitions. [2024-06-28 02:57:07,837 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4322916666666667 [2024-06-28 02:57:07,837 INFO L175 Difference]: Start difference. First operand has 47 places, 38 transitions, 189 flow. Second operand 6 states and 83 transitions. [2024-06-28 02:57:07,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 46 transitions, 297 flow [2024-06-28 02:57:07,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 46 transitions, 280 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-28 02:57:07,839 INFO L231 Difference]: Finished difference. Result has 49 places, 40 transitions, 215 flow [2024-06-28 02:57:07,839 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=215, PETRI_PLACES=49, PETRI_TRANSITIONS=40} [2024-06-28 02:57:07,840 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 18 predicate places. [2024-06-28 02:57:07,840 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 40 transitions, 215 flow [2024-06-28 02:57:07,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:07,840 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:07,840 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:07,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 02:57:07,841 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:57:07,841 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:07,841 INFO L85 PathProgramCache]: Analyzing trace with hash 501071554, now seen corresponding path program 1 times [2024-06-28 02:57:07,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:07,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585419108] [2024-06-28 02:57:07,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:07,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:07,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:08,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:57:08,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:08,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585419108] [2024-06-28 02:57:08,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585419108] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:08,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:08,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:57:08,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023878662] [2024-06-28 02:57:08,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:08,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:57:08,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:08,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:57:08,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:57:08,662 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-28 02:57:08,662 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 40 transitions, 215 flow. Second operand has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:08,663 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:08,663 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-28 02:57:08,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:08,861 INFO L124 PetriNetUnfolderBase]: 204/372 cut-off events. [2024-06-28 02:57:08,861 INFO L125 PetriNetUnfolderBase]: For 1452/1452 co-relation queries the response was YES. [2024-06-28 02:57:08,862 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1355 conditions, 372 events. 204/372 cut-off events. For 1452/1452 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1360 event pairs, 31 based on Foata normal form. 4/374 useless extension candidates. Maximal degree in co-relation 1334. Up to 305 conditions per place. [2024-06-28 02:57:08,864 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 47 selfloop transitions, 12 changer transitions 0/63 dead transitions. [2024-06-28 02:57:08,864 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 63 transitions, 383 flow [2024-06-28 02:57:08,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:57:08,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:57:08,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 125 transitions. [2024-06-28 02:57:08,865 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48828125 [2024-06-28 02:57:08,865 INFO L175 Difference]: Start difference. First operand has 49 places, 40 transitions, 215 flow. Second operand 8 states and 125 transitions. [2024-06-28 02:57:08,865 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 63 transitions, 383 flow [2024-06-28 02:57:08,866 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 63 transitions, 356 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-28 02:57:08,868 INFO L231 Difference]: Finished difference. Result has 53 places, 41 transitions, 217 flow [2024-06-28 02:57:08,868 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=217, PETRI_PLACES=53, PETRI_TRANSITIONS=41} [2024-06-28 02:57:08,869 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 22 predicate places. [2024-06-28 02:57:08,869 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 41 transitions, 217 flow [2024-06-28 02:57:08,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:08,869 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:08,869 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:08,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 02:57:08,870 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)] === [2024-06-28 02:57:08,870 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:08,870 INFO L85 PathProgramCache]: Analyzing trace with hash 1361888085, now seen corresponding path program 1 times [2024-06-28 02:57:08,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:08,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718027119] [2024-06-28 02:57:08,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:08,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:08,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:09,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:57:09,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:09,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718027119] [2024-06-28 02:57:09,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718027119] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:09,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:09,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:57:09,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003869389] [2024-06-28 02:57:09,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:09,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:57:09,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:09,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:57:09,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:57:09,538 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 02:57:09,539 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 41 transitions, 217 flow. Second operand has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:09,539 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:09,539 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 02:57:09,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:09,766 INFO L124 PetriNetUnfolderBase]: 215/393 cut-off events. [2024-06-28 02:57:09,766 INFO L125 PetriNetUnfolderBase]: For 1842/1842 co-relation queries the response was YES. [2024-06-28 02:57:09,767 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1516 conditions, 393 events. 215/393 cut-off events. For 1842/1842 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1468 event pairs, 51 based on Foata normal form. 1/390 useless extension candidates. Maximal degree in co-relation 1493. Up to 350 conditions per place. [2024-06-28 02:57:09,768 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 41 selfloop transitions, 15 changer transitions 0/59 dead transitions. [2024-06-28 02:57:09,768 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 59 transitions, 421 flow [2024-06-28 02:57:09,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:57:09,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:57:09,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 99 transitions. [2024-06-28 02:57:09,769 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38671875 [2024-06-28 02:57:09,770 INFO L175 Difference]: Start difference. First operand has 53 places, 41 transitions, 217 flow. Second operand 8 states and 99 transitions. [2024-06-28 02:57:09,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 59 transitions, 421 flow [2024-06-28 02:57:09,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 59 transitions, 379 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-28 02:57:09,772 INFO L231 Difference]: Finished difference. Result has 59 places, 50 transitions, 296 flow [2024-06-28 02:57:09,772 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=296, PETRI_PLACES=59, PETRI_TRANSITIONS=50} [2024-06-28 02:57:09,773 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 28 predicate places. [2024-06-28 02:57:09,773 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 50 transitions, 296 flow [2024-06-28 02:57:09,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:09,773 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:09,773 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:09,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 02:57:09,774 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:57:09,774 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:09,774 INFO L85 PathProgramCache]: Analyzing trace with hash 2116401053, now seen corresponding path program 2 times [2024-06-28 02:57:09,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:09,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919723753] [2024-06-28 02:57:09,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:09,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:09,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:10,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:57:10,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:10,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919723753] [2024-06-28 02:57:10,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919723753] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:10,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:10,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:57:10,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296576735] [2024-06-28 02:57:10,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:10,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:57:10,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:10,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:57:10,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:57:10,372 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 02:57:10,372 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 50 transitions, 296 flow. Second operand has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:10,372 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:10,373 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 02:57:10,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:10,539 INFO L124 PetriNetUnfolderBase]: 222/405 cut-off events. [2024-06-28 02:57:10,539 INFO L125 PetriNetUnfolderBase]: For 2259/2261 co-relation queries the response was YES. [2024-06-28 02:57:10,540 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1661 conditions, 405 events. 222/405 cut-off events. For 2259/2261 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1532 event pairs, 48 based on Foata normal form. 3/406 useless extension candidates. Maximal degree in co-relation 1633. Up to 360 conditions per place. [2024-06-28 02:57:10,542 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 46 selfloop transitions, 19 changer transitions 0/68 dead transitions. [2024-06-28 02:57:10,542 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 68 transitions, 503 flow [2024-06-28 02:57:10,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:57:10,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:57:10,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 102 transitions. [2024-06-28 02:57:10,543 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3984375 [2024-06-28 02:57:10,543 INFO L175 Difference]: Start difference. First operand has 59 places, 50 transitions, 296 flow. Second operand 8 states and 102 transitions. [2024-06-28 02:57:10,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 68 transitions, 503 flow [2024-06-28 02:57:10,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 68 transitions, 481 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-06-28 02:57:10,546 INFO L231 Difference]: Finished difference. Result has 66 places, 55 transitions, 370 flow [2024-06-28 02:57:10,547 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=276, 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=8, PETRI_FLOW=370, PETRI_PLACES=66, PETRI_TRANSITIONS=55} [2024-06-28 02:57:10,547 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 35 predicate places. [2024-06-28 02:57:10,547 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 55 transitions, 370 flow [2024-06-28 02:57:10,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:10,547 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:10,547 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:10,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 02:57:10,548 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:57:10,548 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:10,548 INFO L85 PathProgramCache]: Analyzing trace with hash 1623438693, now seen corresponding path program 3 times [2024-06-28 02:57:10,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:10,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039947815] [2024-06-28 02:57:10,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:10,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:10,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:11,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:57:11,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:11,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039947815] [2024-06-28 02:57:11,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039947815] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:11,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:11,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:57:11,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817414076] [2024-06-28 02:57:11,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:11,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:57:11,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:11,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:57:11,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:57:11,181 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 02:57:11,181 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 55 transitions, 370 flow. Second operand has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:11,181 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:11,181 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 02:57:11,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:11,363 INFO L124 PetriNetUnfolderBase]: 230/419 cut-off events. [2024-06-28 02:57:11,363 INFO L125 PetriNetUnfolderBase]: For 2961/2961 co-relation queries the response was YES. [2024-06-28 02:57:11,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1840 conditions, 419 events. 230/419 cut-off events. For 2961/2961 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1570 event pairs, 50 based on Foata normal form. 1/418 useless extension candidates. Maximal degree in co-relation 1809. Up to 358 conditions per place. [2024-06-28 02:57:11,366 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 42 selfloop transitions, 24 changer transitions 0/69 dead transitions. [2024-06-28 02:57:11,366 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 69 transitions, 594 flow [2024-06-28 02:57:11,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:57:11,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:57:11,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 91 transitions. [2024-06-28 02:57:11,368 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-28 02:57:11,368 INFO L175 Difference]: Start difference. First operand has 66 places, 55 transitions, 370 flow. Second operand 7 states and 91 transitions. [2024-06-28 02:57:11,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 69 transitions, 594 flow [2024-06-28 02:57:11,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 69 transitions, 549 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-28 02:57:11,372 INFO L231 Difference]: Finished difference. Result has 68 places, 59 transitions, 422 flow [2024-06-28 02:57:11,372 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=325, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=422, PETRI_PLACES=68, PETRI_TRANSITIONS=59} [2024-06-28 02:57:11,372 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 37 predicate places. [2024-06-28 02:57:11,372 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 59 transitions, 422 flow [2024-06-28 02:57:11,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:11,373 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:11,373 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:11,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 02:57:11,373 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:57:11,373 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:11,373 INFO L85 PathProgramCache]: Analyzing trace with hash 1362067823, now seen corresponding path program 1 times [2024-06-28 02:57:11,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:11,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610353443] [2024-06-28 02:57:11,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:11,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:11,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:12,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:57:12,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:12,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610353443] [2024-06-28 02:57:12,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610353443] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:12,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:12,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:57:12,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851118335] [2024-06-28 02:57:12,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:12,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:57:12,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:12,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:57:12,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:57:12,141 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 02:57:12,141 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 59 transitions, 422 flow. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:12,141 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:12,141 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 02:57:12,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:12,319 INFO L124 PetriNetUnfolderBase]: 218/408 cut-off events. [2024-06-28 02:57:12,320 INFO L125 PetriNetUnfolderBase]: For 3353/3355 co-relation queries the response was YES. [2024-06-28 02:57:12,321 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1828 conditions, 408 events. 218/408 cut-off events. For 3353/3355 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1576 event pairs, 48 based on Foata normal form. 3/409 useless extension candidates. Maximal degree in co-relation 1796. Up to 348 conditions per place. [2024-06-28 02:57:12,323 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 45 selfloop transitions, 13 changer transitions 0/70 dead transitions. [2024-06-28 02:57:12,323 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 70 transitions, 576 flow [2024-06-28 02:57:12,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:57:12,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:57:12,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 94 transitions. [2024-06-28 02:57:12,324 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41964285714285715 [2024-06-28 02:57:12,324 INFO L175 Difference]: Start difference. First operand has 68 places, 59 transitions, 422 flow. Second operand 7 states and 94 transitions. [2024-06-28 02:57:12,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 70 transitions, 576 flow [2024-06-28 02:57:12,328 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 70 transitions, 543 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-06-28 02:57:12,329 INFO L231 Difference]: Finished difference. Result has 72 places, 61 transitions, 434 flow [2024-06-28 02:57:12,329 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=389, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=434, PETRI_PLACES=72, PETRI_TRANSITIONS=61} [2024-06-28 02:57:12,330 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 41 predicate places. [2024-06-28 02:57:12,330 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 61 transitions, 434 flow [2024-06-28 02:57:12,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:12,330 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:12,331 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:12,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 02:57:12,331 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:57:12,331 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:12,331 INFO L85 PathProgramCache]: Analyzing trace with hash 1368554325, now seen corresponding path program 4 times [2024-06-28 02:57:12,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:12,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5159130] [2024-06-28 02:57:12,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:12,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:12,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:12,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:57:12,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:12,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5159130] [2024-06-28 02:57:12,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5159130] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:12,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:12,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:57:12,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741832766] [2024-06-28 02:57:12,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:12,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:57:12,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:12,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:57:12,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:57:12,998 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 02:57:12,999 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 61 transitions, 434 flow. Second operand has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:12,999 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:12,999 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 02:57:12,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:13,159 INFO L124 PetriNetUnfolderBase]: 231/420 cut-off events. [2024-06-28 02:57:13,159 INFO L125 PetriNetUnfolderBase]: For 3786/3789 co-relation queries the response was YES. [2024-06-28 02:57:13,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1989 conditions, 420 events. 231/420 cut-off events. For 3786/3789 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1587 event pairs, 51 based on Foata normal form. 1/417 useless extension candidates. Maximal degree in co-relation 1955. Up to 351 conditions per place. [2024-06-28 02:57:13,179 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 40 selfloop transitions, 27 changer transitions 0/70 dead transitions. [2024-06-28 02:57:13,179 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 70 transitions, 634 flow [2024-06-28 02:57:13,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:57:13,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:57:13,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 90 transitions. [2024-06-28 02:57:13,180 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4017857142857143 [2024-06-28 02:57:13,180 INFO L175 Difference]: Start difference. First operand has 72 places, 61 transitions, 434 flow. Second operand 7 states and 90 transitions. [2024-06-28 02:57:13,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 70 transitions, 634 flow [2024-06-28 02:57:13,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 70 transitions, 605 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-28 02:57:13,185 INFO L231 Difference]: Finished difference. Result has 74 places, 63 transitions, 492 flow [2024-06-28 02:57:13,185 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=405, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=492, PETRI_PLACES=74, PETRI_TRANSITIONS=63} [2024-06-28 02:57:13,186 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 43 predicate places. [2024-06-28 02:57:13,186 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 63 transitions, 492 flow [2024-06-28 02:57:13,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:13,187 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:13,187 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:13,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 02:57:13,187 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:57:13,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:13,188 INFO L85 PathProgramCache]: Analyzing trace with hash -15148519, now seen corresponding path program 5 times [2024-06-28 02:57:13,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:13,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173419773] [2024-06-28 02:57:13,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:13,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:13,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:13,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:57:13,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:13,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173419773] [2024-06-28 02:57:13,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173419773] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:13,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:13,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:57:13,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947762996] [2024-06-28 02:57:13,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:13,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:57:13,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:13,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:57:13,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:57:13,756 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 02:57:13,756 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 63 transitions, 492 flow. Second operand has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:13,756 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:13,756 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 02:57:13,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:13,962 INFO L124 PetriNetUnfolderBase]: 229/417 cut-off events. [2024-06-28 02:57:13,962 INFO L125 PetriNetUnfolderBase]: For 4245/4245 co-relation queries the response was YES. [2024-06-28 02:57:13,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2051 conditions, 417 events. 229/417 cut-off events. For 4245/4245 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1564 event pairs, 47 based on Foata normal form. 1/416 useless extension candidates. Maximal degree in co-relation 2016. Up to 372 conditions per place. [2024-06-28 02:57:13,965 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 54 selfloop transitions, 19 changer transitions 0/76 dead transitions. [2024-06-28 02:57:13,965 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 76 transitions, 685 flow [2024-06-28 02:57:13,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:57:13,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:57:13,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 102 transitions. [2024-06-28 02:57:13,966 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3984375 [2024-06-28 02:57:13,966 INFO L175 Difference]: Start difference. First operand has 74 places, 63 transitions, 492 flow. Second operand 8 states and 102 transitions. [2024-06-28 02:57:13,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 76 transitions, 685 flow [2024-06-28 02:57:13,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 76 transitions, 608 flow, removed 13 selfloop flow, removed 5 redundant places. [2024-06-28 02:57:13,972 INFO L231 Difference]: Finished difference. Result has 79 places, 65 transitions, 493 flow [2024-06-28 02:57:13,972 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=415, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=493, PETRI_PLACES=79, PETRI_TRANSITIONS=65} [2024-06-28 02:57:13,973 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 48 predicate places. [2024-06-28 02:57:13,973 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 65 transitions, 493 flow [2024-06-28 02:57:13,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:13,973 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:13,973 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:13,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 02:57:13,974 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:57:13,974 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:13,974 INFO L85 PathProgramCache]: Analyzing trace with hash 1859614301, now seen corresponding path program 2 times [2024-06-28 02:57:13,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:13,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114823306] [2024-06-28 02:57:13,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:13,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:13,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:14,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:57:14,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:14,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114823306] [2024-06-28 02:57:14,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114823306] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:14,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:14,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:57:14,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569044435] [2024-06-28 02:57:14,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:14,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:57:14,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:14,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:57:14,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:57:14,810 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 02:57:14,811 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 65 transitions, 493 flow. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:14,811 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:14,811 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 02:57:14,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:14,979 INFO L124 PetriNetUnfolderBase]: 217/408 cut-off events. [2024-06-28 02:57:14,979 INFO L125 PetriNetUnfolderBase]: For 4670/4670 co-relation queries the response was YES. [2024-06-28 02:57:14,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1985 conditions, 408 events. 217/408 cut-off events. For 4670/4670 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1585 event pairs, 51 based on Foata normal form. 1/405 useless extension candidates. Maximal degree in co-relation 1947. Up to 343 conditions per place. [2024-06-28 02:57:14,982 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 44 selfloop transitions, 16 changer transitions 0/73 dead transitions. [2024-06-28 02:57:14,982 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 73 transitions, 641 flow [2024-06-28 02:57:14,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:57:14,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:57:14,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 93 transitions. [2024-06-28 02:57:14,983 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41517857142857145 [2024-06-28 02:57:14,983 INFO L175 Difference]: Start difference. First operand has 79 places, 65 transitions, 493 flow. Second operand 7 states and 93 transitions. [2024-06-28 02:57:14,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 73 transitions, 641 flow [2024-06-28 02:57:14,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 73 transitions, 598 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-28 02:57:14,988 INFO L231 Difference]: Finished difference. Result has 82 places, 67 transitions, 505 flow [2024-06-28 02:57:14,988 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=450, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=505, PETRI_PLACES=82, PETRI_TRANSITIONS=67} [2024-06-28 02:57:14,989 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 51 predicate places. [2024-06-28 02:57:14,989 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 67 transitions, 505 flow [2024-06-28 02:57:14,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:14,990 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:14,990 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:14,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 02:57:14,990 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:57:14,991 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:14,991 INFO L85 PathProgramCache]: Analyzing trace with hash 1859910971, now seen corresponding path program 3 times [2024-06-28 02:57:14,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:14,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384598949] [2024-06-28 02:57:14,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:14,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:15,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:15,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:57:15,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:15,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384598949] [2024-06-28 02:57:15,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384598949] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:15,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:15,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:57:15,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666953126] [2024-06-28 02:57:15,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:15,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:57:15,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:15,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:57:15,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:57:15,798 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 02:57:15,798 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 67 transitions, 505 flow. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:15,798 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:15,798 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 02:57:15,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:15,950 INFO L124 PetriNetUnfolderBase]: 215/405 cut-off events. [2024-06-28 02:57:15,950 INFO L125 PetriNetUnfolderBase]: For 5110/5110 co-relation queries the response was YES. [2024-06-28 02:57:15,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2017 conditions, 405 events. 215/405 cut-off events. For 5110/5110 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1569 event pairs, 51 based on Foata normal form. 1/402 useless extension candidates. Maximal degree in co-relation 1978. Up to 331 conditions per place. [2024-06-28 02:57:15,953 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 43 selfloop transitions, 21 changer transitions 0/77 dead transitions. [2024-06-28 02:57:15,953 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 77 transitions, 675 flow [2024-06-28 02:57:15,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:57:15,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:57:15,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 94 transitions. [2024-06-28 02:57:15,954 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41964285714285715 [2024-06-28 02:57:15,954 INFO L175 Difference]: Start difference. First operand has 82 places, 67 transitions, 505 flow. Second operand 7 states and 94 transitions. [2024-06-28 02:57:15,954 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 77 transitions, 675 flow [2024-06-28 02:57:15,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 77 transitions, 636 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-28 02:57:15,959 INFO L231 Difference]: Finished difference. Result has 85 places, 71 transitions, 556 flow [2024-06-28 02:57:15,959 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=466, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=556, PETRI_PLACES=85, PETRI_TRANSITIONS=71} [2024-06-28 02:57:15,960 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 54 predicate places. [2024-06-28 02:57:15,960 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 71 transitions, 556 flow [2024-06-28 02:57:15,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:15,960 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:15,960 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:15,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 02:57:15,961 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:57:15,961 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:15,961 INFO L85 PathProgramCache]: Analyzing trace with hash 138010301, now seen corresponding path program 1 times [2024-06-28 02:57:15,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:15,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794016797] [2024-06-28 02:57:15,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:15,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:15,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:17,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:57:17,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:17,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794016797] [2024-06-28 02:57:17,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794016797] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:17,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:17,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:57:17,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036457330] [2024-06-28 02:57:17,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:17,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:57:17,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:17,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:57:17,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:57:17,264 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 02:57:17,264 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 71 transitions, 556 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:17,264 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:17,264 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 02:57:17,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:17,452 INFO L124 PetriNetUnfolderBase]: 211/399 cut-off events. [2024-06-28 02:57:17,452 INFO L125 PetriNetUnfolderBase]: For 5594/5594 co-relation queries the response was YES. [2024-06-28 02:57:17,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2063 conditions, 399 events. 211/399 cut-off events. For 5594/5594 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1529 event pairs, 50 based on Foata normal form. 1/398 useless extension candidates. Maximal degree in co-relation 2022. Up to 350 conditions per place. [2024-06-28 02:57:17,455 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 54 selfloop transitions, 12 changer transitions 0/79 dead transitions. [2024-06-28 02:57:17,455 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 79 transitions, 712 flow [2024-06-28 02:57:17,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:57:17,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:57:17,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 92 transitions. [2024-06-28 02:57:17,456 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4107142857142857 [2024-06-28 02:57:17,456 INFO L175 Difference]: Start difference. First operand has 85 places, 71 transitions, 556 flow. Second operand 7 states and 92 transitions. [2024-06-28 02:57:17,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 79 transitions, 712 flow [2024-06-28 02:57:17,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 79 transitions, 681 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-06-28 02:57:17,462 INFO L231 Difference]: Finished difference. Result has 89 places, 73 transitions, 569 flow [2024-06-28 02:57:17,463 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=525, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=569, PETRI_PLACES=89, PETRI_TRANSITIONS=73} [2024-06-28 02:57:17,463 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 58 predicate places. [2024-06-28 02:57:17,463 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 73 transitions, 569 flow [2024-06-28 02:57:17,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:17,463 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:17,464 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:17,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 02:57:17,464 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:57:17,464 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:17,464 INFO L85 PathProgramCache]: Analyzing trace with hash -1218721180, now seen corresponding path program 1 times [2024-06-28 02:57:17,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:17,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980573162] [2024-06-28 02:57:17,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:17,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:17,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:18,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:57:18,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:18,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980573162] [2024-06-28 02:57:18,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980573162] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:18,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:18,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:57:18,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492192658] [2024-06-28 02:57:18,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:18,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:57:18,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:18,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:57:18,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:57:18,163 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 02:57:18,163 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 73 transitions, 569 flow. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:18,163 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:18,163 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 02:57:18,163 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:18,433 INFO L124 PetriNetUnfolderBase]: 238/436 cut-off events. [2024-06-28 02:57:18,433 INFO L125 PetriNetUnfolderBase]: For 6487/6487 co-relation queries the response was YES. [2024-06-28 02:57:18,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2337 conditions, 436 events. 238/436 cut-off events. For 6487/6487 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1669 event pairs, 50 based on Foata normal form. 2/433 useless extension candidates. Maximal degree in co-relation 2294. Up to 368 conditions per place. [2024-06-28 02:57:18,437 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 65 selfloop transitions, 22 changer transitions 0/90 dead transitions. [2024-06-28 02:57:18,437 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 90 transitions, 814 flow [2024-06-28 02:57:18,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:57:18,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:57:18,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 113 transitions. [2024-06-28 02:57:18,439 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3923611111111111 [2024-06-28 02:57:18,439 INFO L175 Difference]: Start difference. First operand has 89 places, 73 transitions, 569 flow. Second operand 9 states and 113 transitions. [2024-06-28 02:57:18,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 90 transitions, 814 flow [2024-06-28 02:57:18,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 90 transitions, 769 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-28 02:57:18,449 INFO L231 Difference]: Finished difference. Result has 93 places, 79 transitions, 624 flow [2024-06-28 02:57:18,449 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=524, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=624, PETRI_PLACES=93, PETRI_TRANSITIONS=79} [2024-06-28 02:57:18,450 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 62 predicate places. [2024-06-28 02:57:18,450 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 79 transitions, 624 flow [2024-06-28 02:57:18,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:18,450 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:18,450 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:18,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 02:57:18,451 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:57:18,451 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:18,451 INFO L85 PathProgramCache]: Analyzing trace with hash -1218571450, now seen corresponding path program 2 times [2024-06-28 02:57:18,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:18,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262983638] [2024-06-28 02:57:18,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:18,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:18,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:19,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:57:19,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:19,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262983638] [2024-06-28 02:57:19,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262983638] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:19,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:19,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:57:19,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244776615] [2024-06-28 02:57:19,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:19,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:57:19,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:19,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:57:19,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:57:19,128 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 02:57:19,128 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 79 transitions, 624 flow. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:19,128 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:19,128 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 02:57:19,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:19,350 INFO L124 PetriNetUnfolderBase]: 254/466 cut-off events. [2024-06-28 02:57:19,350 INFO L125 PetriNetUnfolderBase]: For 7815/7815 co-relation queries the response was YES. [2024-06-28 02:57:19,352 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2605 conditions, 466 events. 254/466 cut-off events. For 7815/7815 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1842 event pairs, 46 based on Foata normal form. 2/466 useless extension candidates. Maximal degree in co-relation 2561. Up to 366 conditions per place. [2024-06-28 02:57:19,354 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 64 selfloop transitions, 30 changer transitions 0/97 dead transitions. [2024-06-28 02:57:19,354 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 97 transitions, 936 flow [2024-06-28 02:57:19,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:57:19,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:57:19,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 106 transitions. [2024-06-28 02:57:19,356 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4140625 [2024-06-28 02:57:19,356 INFO L175 Difference]: Start difference. First operand has 93 places, 79 transitions, 624 flow. Second operand 8 states and 106 transitions. [2024-06-28 02:57:19,356 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 97 transitions, 936 flow [2024-06-28 02:57:19,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 97 transitions, 897 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-06-28 02:57:19,368 INFO L231 Difference]: Finished difference. Result has 97 places, 83 transitions, 704 flow [2024-06-28 02:57:19,368 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=585, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=704, PETRI_PLACES=97, PETRI_TRANSITIONS=83} [2024-06-28 02:57:19,368 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 66 predicate places. [2024-06-28 02:57:19,368 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 83 transitions, 704 flow [2024-06-28 02:57:19,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:19,369 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:19,369 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:19,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 02:57:19,369 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:57:19,369 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:19,369 INFO L85 PathProgramCache]: Analyzing trace with hash -1218571233, now seen corresponding path program 1 times [2024-06-28 02:57:19,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:19,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704897392] [2024-06-28 02:57:19,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:19,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:19,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:20,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:57:20,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:20,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704897392] [2024-06-28 02:57:20,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704897392] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:20,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:20,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:57:20,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97071274] [2024-06-28 02:57:20,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:20,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:57:20,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:20,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:57:20,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:57:20,199 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 02:57:20,199 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 83 transitions, 704 flow. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:20,199 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:20,199 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 02:57:20,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:20,440 INFO L124 PetriNetUnfolderBase]: 257/471 cut-off events. [2024-06-28 02:57:20,440 INFO L125 PetriNetUnfolderBase]: For 8616/8616 co-relation queries the response was YES. [2024-06-28 02:57:20,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2709 conditions, 471 events. 257/471 cut-off events. For 8616/8616 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1860 event pairs, 47 based on Foata normal form. 1/470 useless extension candidates. Maximal degree in co-relation 2663. Up to 406 conditions per place. [2024-06-28 02:57:20,444 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 68 selfloop transitions, 25 changer transitions 0/96 dead transitions. [2024-06-28 02:57:20,444 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 96 transitions, 938 flow [2024-06-28 02:57:20,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:57:20,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:57:20,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 101 transitions. [2024-06-28 02:57:20,445 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39453125 [2024-06-28 02:57:20,445 INFO L175 Difference]: Start difference. First operand has 97 places, 83 transitions, 704 flow. Second operand 8 states and 101 transitions. [2024-06-28 02:57:20,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 96 transitions, 938 flow [2024-06-28 02:57:20,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 96 transitions, 894 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-06-28 02:57:20,454 INFO L231 Difference]: Finished difference. Result has 101 places, 85 transitions, 741 flow [2024-06-28 02:57:20,454 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=660, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=741, PETRI_PLACES=101, PETRI_TRANSITIONS=85} [2024-06-28 02:57:20,455 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 70 predicate places. [2024-06-28 02:57:20,455 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 85 transitions, 741 flow [2024-06-28 02:57:20,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:20,455 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:20,455 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:20,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 02:57:20,456 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:57:20,456 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:20,456 INFO L85 PathProgramCache]: Analyzing trace with hash -725569669, now seen corresponding path program 2 times [2024-06-28 02:57:20,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:20,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505990243] [2024-06-28 02:57:20,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:20,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:20,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:21,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:57:21,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:21,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505990243] [2024-06-28 02:57:21,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505990243] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:21,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:21,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:57:21,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643717191] [2024-06-28 02:57:21,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:21,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:57:21,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:21,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:57:21,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:57:21,249 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 02:57:21,249 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 85 transitions, 741 flow. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:21,249 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:21,249 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 02:57:21,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:21,457 INFO L124 PetriNetUnfolderBase]: 265/484 cut-off events. [2024-06-28 02:57:21,457 INFO L125 PetriNetUnfolderBase]: For 9530/9530 co-relation queries the response was YES. [2024-06-28 02:57:21,458 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2882 conditions, 484 events. 265/484 cut-off events. For 9530/9530 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1921 event pairs, 49 based on Foata normal form. 1/483 useless extension candidates. Maximal degree in co-relation 2834. Up to 401 conditions per place. [2024-06-28 02:57:21,460 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 65 selfloop transitions, 31 changer transitions 0/99 dead transitions. [2024-06-28 02:57:21,460 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 99 transitions, 1047 flow [2024-06-28 02:57:21,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:57:21,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:57:21,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 102 transitions. [2024-06-28 02:57:21,463 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3984375 [2024-06-28 02:57:21,463 INFO L175 Difference]: Start difference. First operand has 101 places, 85 transitions, 741 flow. Second operand 8 states and 102 transitions. [2024-06-28 02:57:21,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 99 transitions, 1047 flow [2024-06-28 02:57:21,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 99 transitions, 986 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-28 02:57:21,474 INFO L231 Difference]: Finished difference. Result has 103 places, 89 transitions, 799 flow [2024-06-28 02:57:21,474 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=680, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=799, PETRI_PLACES=103, PETRI_TRANSITIONS=89} [2024-06-28 02:57:21,475 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 72 predicate places. [2024-06-28 02:57:21,475 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 89 transitions, 799 flow [2024-06-28 02:57:21,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:21,475 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:21,475 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:21,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 02:57:21,475 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:57:21,476 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:21,476 INFO L85 PathProgramCache]: Analyzing trace with hash -1212999324, now seen corresponding path program 1 times [2024-06-28 02:57:21,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:21,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565933029] [2024-06-28 02:57:21,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:21,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:21,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:22,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:57:22,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:22,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565933029] [2024-06-28 02:57:22,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565933029] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:22,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:22,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:57:22,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082364463] [2024-06-28 02:57:22,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:22,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:57:22,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:22,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:57:22,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:57:22,262 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 02:57:22,263 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 89 transitions, 799 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:22,263 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:22,263 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 02:57:22,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:22,456 INFO L124 PetriNetUnfolderBase]: 255/478 cut-off events. [2024-06-28 02:57:22,456 INFO L125 PetriNetUnfolderBase]: For 10534/10534 co-relation queries the response was YES. [2024-06-28 02:57:22,458 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2867 conditions, 478 events. 255/478 cut-off events. For 10534/10534 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1964 event pairs, 47 based on Foata normal form. 2/478 useless extension candidates. Maximal degree in co-relation 2818. Up to 399 conditions per place. [2024-06-28 02:57:22,460 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 69 selfloop transitions, 16 changer transitions 0/101 dead transitions. [2024-06-28 02:57:22,460 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 101 transitions, 1013 flow [2024-06-28 02:57:22,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:57:22,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:57:22,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 106 transitions. [2024-06-28 02:57:22,461 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4140625 [2024-06-28 02:57:22,462 INFO L175 Difference]: Start difference. First operand has 103 places, 89 transitions, 799 flow. Second operand 8 states and 106 transitions. [2024-06-28 02:57:22,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 101 transitions, 1013 flow [2024-06-28 02:57:22,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 101 transitions, 960 flow, removed 11 selfloop flow, removed 4 redundant places. [2024-06-28 02:57:22,474 INFO L231 Difference]: Finished difference. Result has 107 places, 91 transitions, 805 flow [2024-06-28 02:57:22,474 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=746, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=805, PETRI_PLACES=107, PETRI_TRANSITIONS=91} [2024-06-28 02:57:22,474 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 76 predicate places. [2024-06-28 02:57:22,474 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 91 transitions, 805 flow [2024-06-28 02:57:22,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:22,475 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:22,475 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:22,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 02:57:22,475 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:57:22,475 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:22,475 INFO L85 PathProgramCache]: Analyzing trace with hash -1213007043, now seen corresponding path program 3 times [2024-06-28 02:57:22,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:22,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750765440] [2024-06-28 02:57:22,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:22,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:22,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:23,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:57:23,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:23,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750765440] [2024-06-28 02:57:23,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750765440] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:23,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:23,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:57:23,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976776996] [2024-06-28 02:57:23,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:23,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:57:23,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:23,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:57:23,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:57:23,267 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 02:57:23,268 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 91 transitions, 805 flow. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:23,268 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:23,268 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 02:57:23,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:23,469 INFO L124 PetriNetUnfolderBase]: 269/491 cut-off events. [2024-06-28 02:57:23,470 INFO L125 PetriNetUnfolderBase]: For 10952/10952 co-relation queries the response was YES. [2024-06-28 02:57:23,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3036 conditions, 491 events. 269/491 cut-off events. For 10952/10952 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1965 event pairs, 48 based on Foata normal form. 1/490 useless extension candidates. Maximal degree in co-relation 2985. Up to 422 conditions per place. [2024-06-28 02:57:23,473 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 71 selfloop transitions, 26 changer transitions 0/100 dead transitions. [2024-06-28 02:57:23,473 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 100 transitions, 1021 flow [2024-06-28 02:57:23,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:57:23,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:57:23,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 100 transitions. [2024-06-28 02:57:23,474 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-28 02:57:23,474 INFO L175 Difference]: Start difference. First operand has 107 places, 91 transitions, 805 flow. Second operand 8 states and 100 transitions. [2024-06-28 02:57:23,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 100 transitions, 1021 flow [2024-06-28 02:57:23,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 100 transitions, 968 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-28 02:57:23,485 INFO L231 Difference]: Finished difference. Result has 109 places, 91 transitions, 809 flow [2024-06-28 02:57:23,485 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=752, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=809, PETRI_PLACES=109, PETRI_TRANSITIONS=91} [2024-06-28 02:57:23,486 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 78 predicate places. [2024-06-28 02:57:23,486 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 91 transitions, 809 flow [2024-06-28 02:57:23,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:23,486 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:23,486 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:23,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 02:57:23,486 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:57:23,487 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:23,487 INFO L85 PathProgramCache]: Analyzing trace with hash -282690396, now seen corresponding path program 3 times [2024-06-28 02:57:23,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:23,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750056129] [2024-06-28 02:57:23,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:23,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:23,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:24,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:57:24,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:24,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750056129] [2024-06-28 02:57:24,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750056129] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:24,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:24,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:57:24,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114381660] [2024-06-28 02:57:24,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:24,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:57:24,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:24,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:57:24,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:57:24,166 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 02:57:24,167 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 91 transitions, 809 flow. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:24,167 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:24,167 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 02:57:24,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:24,368 INFO L124 PetriNetUnfolderBase]: 287/525 cut-off events. [2024-06-28 02:57:24,369 INFO L125 PetriNetUnfolderBase]: For 12218/12218 co-relation queries the response was YES. [2024-06-28 02:57:24,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3219 conditions, 525 events. 287/525 cut-off events. For 12218/12218 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2162 event pairs, 49 based on Foata normal form. 2/522 useless extension candidates. Maximal degree in co-relation 3167. Up to 428 conditions per place. [2024-06-28 02:57:24,372 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 77 selfloop transitions, 29 changer transitions 0/109 dead transitions. [2024-06-28 02:57:24,372 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 109 transitions, 1123 flow [2024-06-28 02:57:24,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:57:24,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:57:24,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 116 transitions. [2024-06-28 02:57:24,373 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4027777777777778 [2024-06-28 02:57:24,374 INFO L175 Difference]: Start difference. First operand has 109 places, 91 transitions, 809 flow. Second operand 9 states and 116 transitions. [2024-06-28 02:57:24,374 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 109 transitions, 1123 flow [2024-06-28 02:57:24,385 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 109 transitions, 1046 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-28 02:57:24,387 INFO L231 Difference]: Finished difference. Result has 113 places, 99 transitions, 898 flow [2024-06-28 02:57:24,387 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=741, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=898, PETRI_PLACES=113, PETRI_TRANSITIONS=99} [2024-06-28 02:57:24,387 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 82 predicate places. [2024-06-28 02:57:24,387 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 99 transitions, 898 flow [2024-06-28 02:57:24,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:24,388 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:24,388 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:24,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 02:57:24,388 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:57:24,388 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:24,388 INFO L85 PathProgramCache]: Analyzing trace with hash 1813469261, now seen corresponding path program 4 times [2024-06-28 02:57:24,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:24,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226639185] [2024-06-28 02:57:24,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:24,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:24,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:25,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:57:25,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:25,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226639185] [2024-06-28 02:57:25,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226639185] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:25,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:25,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:57:25,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142323248] [2024-06-28 02:57:25,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:25,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:57:25,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:25,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:57:25,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:57:25,229 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 02:57:25,236 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 99 transitions, 898 flow. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:25,236 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:25,236 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 02:57:25,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:25,420 INFO L124 PetriNetUnfolderBase]: 295/537 cut-off events. [2024-06-28 02:57:25,420 INFO L125 PetriNetUnfolderBase]: For 13377/13377 co-relation queries the response was YES. [2024-06-28 02:57:25,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3422 conditions, 537 events. 295/537 cut-off events. For 13377/13377 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2205 event pairs, 52 based on Foata normal form. 1/534 useless extension candidates. Maximal degree in co-relation 3367. Up to 445 conditions per place. [2024-06-28 02:57:25,426 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 73 selfloop transitions, 35 changer transitions 0/111 dead transitions. [2024-06-28 02:57:25,426 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 111 transitions, 1238 flow [2024-06-28 02:57:25,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:57:25,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:57:25,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 102 transitions. [2024-06-28 02:57:25,435 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3984375 [2024-06-28 02:57:25,435 INFO L175 Difference]: Start difference. First operand has 113 places, 99 transitions, 898 flow. Second operand 8 states and 102 transitions. [2024-06-28 02:57:25,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 111 transitions, 1238 flow [2024-06-28 02:57:25,448 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 111 transitions, 1172 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-06-28 02:57:25,449 INFO L231 Difference]: Finished difference. Result has 116 places, 103 transitions, 967 flow [2024-06-28 02:57:25,449 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=832, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=967, PETRI_PLACES=116, PETRI_TRANSITIONS=103} [2024-06-28 02:57:25,450 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 85 predicate places. [2024-06-28 02:57:25,450 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 103 transitions, 967 flow [2024-06-28 02:57:25,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:25,450 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:25,450 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:25,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 02:57:25,451 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:57:25,451 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:25,451 INFO L85 PathProgramCache]: Analyzing trace with hash 1813469540, now seen corresponding path program 2 times [2024-06-28 02:57:25,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:25,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346053843] [2024-06-28 02:57:25,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:25,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:25,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:26,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:57:26,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:26,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346053843] [2024-06-28 02:57:26,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346053843] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:26,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:26,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:57:26,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712812194] [2024-06-28 02:57:26,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:26,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:57:26,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:26,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:57:26,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:57:26,249 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 02:57:26,249 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 103 transitions, 967 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:26,249 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:26,249 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 02:57:26,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:26,416 INFO L124 PetriNetUnfolderBase]: 282/528 cut-off events. [2024-06-28 02:57:26,416 INFO L125 PetriNetUnfolderBase]: For 14498/14498 co-relation queries the response was YES. [2024-06-28 02:57:26,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3368 conditions, 528 events. 282/528 cut-off events. For 14498/14498 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2241 event pairs, 48 based on Foata normal form. 2/527 useless extension candidates. Maximal degree in co-relation 3312. Up to 433 conditions per place. [2024-06-28 02:57:26,422 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 74 selfloop transitions, 20 changer transitions 0/113 dead transitions. [2024-06-28 02:57:26,423 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 113 transitions, 1197 flow [2024-06-28 02:57:26,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:57:26,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:57:26,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 105 transitions. [2024-06-28 02:57:26,424 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41015625 [2024-06-28 02:57:26,424 INFO L175 Difference]: Start difference. First operand has 116 places, 103 transitions, 967 flow. Second operand 8 states and 105 transitions. [2024-06-28 02:57:26,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 113 transitions, 1197 flow [2024-06-28 02:57:26,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 113 transitions, 1130 flow, removed 15 selfloop flow, removed 4 redundant places. [2024-06-28 02:57:26,440 INFO L231 Difference]: Finished difference. Result has 120 places, 105 transitions, 971 flow [2024-06-28 02:57:26,440 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=900, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=971, PETRI_PLACES=120, PETRI_TRANSITIONS=105} [2024-06-28 02:57:26,440 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 89 predicate places. [2024-06-28 02:57:26,441 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 105 transitions, 971 flow [2024-06-28 02:57:26,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:26,441 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:26,441 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:26,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 02:57:26,441 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:57:26,442 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:26,442 INFO L85 PathProgramCache]: Analyzing trace with hash 1813461604, now seen corresponding path program 4 times [2024-06-28 02:57:26,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:26,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236184552] [2024-06-28 02:57:26,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:26,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:26,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:27,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:57:27,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:27,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236184552] [2024-06-28 02:57:27,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236184552] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:27,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:27,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:57:27,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870221184] [2024-06-28 02:57:27,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:27,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:57:27,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:27,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:57:27,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:57:27,164 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 02:57:27,164 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 105 transitions, 971 flow. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:27,164 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:27,164 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 02:57:27,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:27,324 INFO L124 PetriNetUnfolderBase]: 312/570 cut-off events. [2024-06-28 02:57:27,324 INFO L125 PetriNetUnfolderBase]: For 16356/16356 co-relation queries the response was YES. [2024-06-28 02:57:27,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3758 conditions, 570 events. 312/570 cut-off events. For 16356/16356 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2415 event pairs, 56 based on Foata normal form. 2/567 useless extension candidates. Maximal degree in co-relation 3700. Up to 416 conditions per place. [2024-06-28 02:57:27,327 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 76 selfloop transitions, 40 changer transitions 0/119 dead transitions. [2024-06-28 02:57:27,327 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 119 transitions, 1347 flow [2024-06-28 02:57:27,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:57:27,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:57:27,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 104 transitions. [2024-06-28 02:57:27,329 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-28 02:57:27,329 INFO L175 Difference]: Start difference. First operand has 120 places, 105 transitions, 971 flow. Second operand 8 states and 104 transitions. [2024-06-28 02:57:27,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 119 transitions, 1347 flow [2024-06-28 02:57:27,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 119 transitions, 1292 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-28 02:57:27,345 INFO L231 Difference]: Finished difference. Result has 122 places, 109 transitions, 1069 flow [2024-06-28 02:57:27,345 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=916, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1069, PETRI_PLACES=122, PETRI_TRANSITIONS=109} [2024-06-28 02:57:27,346 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 91 predicate places. [2024-06-28 02:57:27,346 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 109 transitions, 1069 flow [2024-06-28 02:57:27,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:27,346 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:27,346 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:27,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 02:57:27,347 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:57:27,347 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:27,347 INFO L85 PathProgramCache]: Analyzing trace with hash 1813461821, now seen corresponding path program 5 times [2024-06-28 02:57:27,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:27,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771308150] [2024-06-28 02:57:27,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:27,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:27,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:28,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:57:28,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:28,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771308150] [2024-06-28 02:57:28,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771308150] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:28,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:28,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:57:28,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218984389] [2024-06-28 02:57:28,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:28,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:57:28,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:28,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:57:28,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:57:28,130 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 02:57:28,130 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 109 transitions, 1069 flow. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:28,130 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:28,130 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 02:57:28,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:28,295 INFO L124 PetriNetUnfolderBase]: 310/566 cut-off events. [2024-06-28 02:57:28,296 INFO L125 PetriNetUnfolderBase]: For 16861/16861 co-relation queries the response was YES. [2024-06-28 02:57:28,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3813 conditions, 566 events. 310/566 cut-off events. For 16861/16861 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2384 event pairs, 53 based on Foata normal form. 1/563 useless extension candidates. Maximal degree in co-relation 3754. Up to 477 conditions per place. [2024-06-28 02:57:28,299 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 81 selfloop transitions, 32 changer transitions 0/116 dead transitions. [2024-06-28 02:57:28,299 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 116 transitions, 1311 flow [2024-06-28 02:57:28,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:57:28,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:57:28,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 99 transitions. [2024-06-28 02:57:28,300 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38671875 [2024-06-28 02:57:28,300 INFO L175 Difference]: Start difference. First operand has 122 places, 109 transitions, 1069 flow. Second operand 8 states and 99 transitions. [2024-06-28 02:57:28,300 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 116 transitions, 1311 flow [2024-06-28 02:57:28,317 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 116 transitions, 1245 flow, removed 23 selfloop flow, removed 4 redundant places. [2024-06-28 02:57:28,318 INFO L231 Difference]: Finished difference. Result has 126 places, 109 transitions, 1072 flow [2024-06-28 02:57:28,319 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1003, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1072, PETRI_PLACES=126, PETRI_TRANSITIONS=109} [2024-06-28 02:57:28,319 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 95 predicate places. [2024-06-28 02:57:28,319 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 109 transitions, 1072 flow [2024-06-28 02:57:28,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:28,320 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:28,320 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:28,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 02:57:28,320 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:57:28,320 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:28,320 INFO L85 PathProgramCache]: Analyzing trace with hash 1822666031, now seen corresponding path program 6 times [2024-06-28 02:57:28,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:28,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504166015] [2024-06-28 02:57:28,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:28,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:28,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:29,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:57:29,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:29,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504166015] [2024-06-28 02:57:29,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504166015] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:29,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:29,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:57:29,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362984564] [2024-06-28 02:57:29,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:29,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:57:29,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:29,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:57:29,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:57:29,098 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 02:57:29,098 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 109 transitions, 1072 flow. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:29,098 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:29,099 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 02:57:29,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:29,257 INFO L124 PetriNetUnfolderBase]: 308/563 cut-off events. [2024-06-28 02:57:29,257 INFO L125 PetriNetUnfolderBase]: For 17137/17137 co-relation queries the response was YES. [2024-06-28 02:57:29,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3778 conditions, 563 events. 308/563 cut-off events. For 17137/17137 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2372 event pairs, 53 based on Foata normal form. 1/560 useless extension candidates. Maximal degree in co-relation 3717. Up to 439 conditions per place. [2024-06-28 02:57:29,260 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 69 selfloop transitions, 46 changer transitions 0/118 dead transitions. [2024-06-28 02:57:29,261 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 118 transitions, 1350 flow [2024-06-28 02:57:29,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:57:29,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:57:29,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 101 transitions. [2024-06-28 02:57:29,261 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39453125 [2024-06-28 02:57:29,262 INFO L175 Difference]: Start difference. First operand has 126 places, 109 transitions, 1072 flow. Second operand 8 states and 101 transitions. [2024-06-28 02:57:29,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 118 transitions, 1350 flow [2024-06-28 02:57:29,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 118 transitions, 1279 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-28 02:57:29,283 INFO L231 Difference]: Finished difference. Result has 127 places, 111 transitions, 1134 flow [2024-06-28 02:57:29,283 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1001, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1134, PETRI_PLACES=127, PETRI_TRANSITIONS=111} [2024-06-28 02:57:29,283 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 96 predicate places. [2024-06-28 02:57:29,284 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 111 transitions, 1134 flow [2024-06-28 02:57:29,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:29,284 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:29,284 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:29,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-28 02:57:29,284 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:57:29,284 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:29,285 INFO L85 PathProgramCache]: Analyzing trace with hash 1822666310, now seen corresponding path program 3 times [2024-06-28 02:57:29,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:29,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714259424] [2024-06-28 02:57:29,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:29,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:29,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:30,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:57:30,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:30,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714259424] [2024-06-28 02:57:30,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714259424] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:30,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:30,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:57:30,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770454890] [2024-06-28 02:57:30,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:30,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:57:30,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:30,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:57:30,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:57:30,100 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 02:57:30,100 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 111 transitions, 1134 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:30,100 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:30,100 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 02:57:30,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:30,279 INFO L124 PetriNetUnfolderBase]: 294/553 cut-off events. [2024-06-28 02:57:30,280 INFO L125 PetriNetUnfolderBase]: For 18495/18495 co-relation queries the response was YES. [2024-06-28 02:57:30,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3754 conditions, 553 events. 294/553 cut-off events. For 18495/18495 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2413 event pairs, 49 based on Foata normal form. 2/552 useless extension candidates. Maximal degree in co-relation 3692. Up to 416 conditions per place. [2024-06-28 02:57:30,282 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 75 selfloop transitions, 31 changer transitions 0/126 dead transitions. [2024-06-28 02:57:30,283 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 126 transitions, 1488 flow [2024-06-28 02:57:30,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:57:30,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:57:30,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 111 transitions. [2024-06-28 02:57:30,283 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43359375 [2024-06-28 02:57:30,283 INFO L175 Difference]: Start difference. First operand has 127 places, 111 transitions, 1134 flow. Second operand 8 states and 111 transitions. [2024-06-28 02:57:30,283 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 126 transitions, 1488 flow [2024-06-28 02:57:30,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 126 transitions, 1371 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-28 02:57:30,305 INFO L231 Difference]: Finished difference. Result has 129 places, 115 transitions, 1140 flow [2024-06-28 02:57:30,305 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1017, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1140, PETRI_PLACES=129, PETRI_TRANSITIONS=115} [2024-06-28 02:57:30,305 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 98 predicate places. [2024-06-28 02:57:30,305 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 115 transitions, 1140 flow [2024-06-28 02:57:30,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:30,306 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:30,306 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:30,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-28 02:57:30,306 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:57:30,306 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:30,306 INFO L85 PathProgramCache]: Analyzing trace with hash -524211370, now seen corresponding path program 4 times [2024-06-28 02:57:30,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:30,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977782885] [2024-06-28 02:57:30,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:30,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:30,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:31,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:57:31,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:31,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977782885] [2024-06-28 02:57:31,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977782885] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:31,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:31,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:57:31,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061678816] [2024-06-28 02:57:31,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:31,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:57:31,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:31,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:57:31,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:57:31,235 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 02:57:31,235 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 115 transitions, 1140 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:31,235 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:31,235 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 02:57:31,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:31,472 INFO L124 PetriNetUnfolderBase]: 292/549 cut-off events. [2024-06-28 02:57:31,473 INFO L125 PetriNetUnfolderBase]: For 18713/18713 co-relation queries the response was YES. [2024-06-28 02:57:31,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3682 conditions, 549 events. 292/549 cut-off events. For 18713/18713 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2390 event pairs, 54 based on Foata normal form. 2/546 useless extension candidates. Maximal degree in co-relation 3619. Up to 465 conditions per place. [2024-06-28 02:57:31,477 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 89 selfloop transitions, 14 changer transitions 0/123 dead transitions. [2024-06-28 02:57:31,477 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 123 transitions, 1366 flow [2024-06-28 02:57:31,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:57:31,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:57:31,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 104 transitions. [2024-06-28 02:57:31,478 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-28 02:57:31,479 INFO L175 Difference]: Start difference. First operand has 129 places, 115 transitions, 1140 flow. Second operand 8 states and 104 transitions. [2024-06-28 02:57:31,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 123 transitions, 1366 flow [2024-06-28 02:57:31,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 123 transitions, 1291 flow, removed 21 selfloop flow, removed 4 redundant places. [2024-06-28 02:57:31,502 INFO L231 Difference]: Finished difference. Result has 133 places, 115 transitions, 1099 flow [2024-06-28 02:57:31,503 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1065, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1099, PETRI_PLACES=133, PETRI_TRANSITIONS=115} [2024-06-28 02:57:31,503 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 102 predicate places. [2024-06-28 02:57:31,504 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 115 transitions, 1099 flow [2024-06-28 02:57:31,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:31,504 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:31,504 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:31,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-28 02:57:31,504 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:57:31,505 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:31,505 INFO L85 PathProgramCache]: Analyzing trace with hash -1699002998, now seen corresponding path program 5 times [2024-06-28 02:57:31,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:31,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522685154] [2024-06-28 02:57:31,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:31,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:31,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:32,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:57:32,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:32,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522685154] [2024-06-28 02:57:32,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522685154] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:32,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:32,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:57:32,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180940830] [2024-06-28 02:57:32,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:32,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:57:32,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:32,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:57:32,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:57:32,070 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 02:57:32,071 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 115 transitions, 1099 flow. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:32,071 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:32,071 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 02:57:32,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:32,300 INFO L124 PetriNetUnfolderBase]: 320/587 cut-off events. [2024-06-28 02:57:32,300 INFO L125 PetriNetUnfolderBase]: For 20014/20014 co-relation queries the response was YES. [2024-06-28 02:57:32,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3941 conditions, 587 events. 320/587 cut-off events. For 20014/20014 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2530 event pairs, 47 based on Foata normal form. 2/587 useless extension candidates. Maximal degree in co-relation 3876. Up to 503 conditions per place. [2024-06-28 02:57:32,303 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 105 selfloop transitions, 27 changer transitions 0/135 dead transitions. [2024-06-28 02:57:32,303 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 135 transitions, 1455 flow [2024-06-28 02:57:32,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:57:32,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:57:32,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 116 transitions. [2024-06-28 02:57:32,304 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4027777777777778 [2024-06-28 02:57:32,304 INFO L175 Difference]: Start difference. First operand has 133 places, 115 transitions, 1099 flow. Second operand 9 states and 116 transitions. [2024-06-28 02:57:32,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 135 transitions, 1455 flow [2024-06-28 02:57:32,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 135 transitions, 1422 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-28 02:57:32,327 INFO L231 Difference]: Finished difference. Result has 135 places, 119 transitions, 1177 flow [2024-06-28 02:57:32,327 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1066, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1177, PETRI_PLACES=135, PETRI_TRANSITIONS=119} [2024-06-28 02:57:32,327 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 104 predicate places. [2024-06-28 02:57:32,327 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 119 transitions, 1177 flow [2024-06-28 02:57:32,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:32,328 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:32,328 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:32,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-28 02:57:32,328 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:57:32,328 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:32,328 INFO L85 PathProgramCache]: Analyzing trace with hash -422165434, now seen corresponding path program 6 times [2024-06-28 02:57:32,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:32,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088943696] [2024-06-28 02:57:32,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:32,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:32,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:32,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:57:32,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:32,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088943696] [2024-06-28 02:57:32,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088943696] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:32,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:32,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:57:32,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639910378] [2024-06-28 02:57:32,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:32,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:57:32,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:32,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:57:32,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:57:32,924 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 02:57:32,925 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 119 transitions, 1177 flow. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:32,925 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:32,925 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 02:57:32,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:33,188 INFO L124 PetriNetUnfolderBase]: 330/606 cut-off events. [2024-06-28 02:57:33,188 INFO L125 PetriNetUnfolderBase]: For 21544/21544 co-relation queries the response was YES. [2024-06-28 02:57:33,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4138 conditions, 606 events. 330/606 cut-off events. For 21544/21544 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2649 event pairs, 47 based on Foata normal form. 2/606 useless extension candidates. Maximal degree in co-relation 4072. Up to 518 conditions per place. [2024-06-28 02:57:33,192 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 108 selfloop transitions, 27 changer transitions 0/138 dead transitions. [2024-06-28 02:57:33,192 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 138 transitions, 1545 flow [2024-06-28 02:57:33,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:57:33,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:57:33,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 116 transitions. [2024-06-28 02:57:33,193 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4027777777777778 [2024-06-28 02:57:33,193 INFO L175 Difference]: Start difference. First operand has 135 places, 119 transitions, 1177 flow. Second operand 9 states and 116 transitions. [2024-06-28 02:57:33,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 138 transitions, 1545 flow [2024-06-28 02:57:33,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 138 transitions, 1465 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-28 02:57:33,221 INFO L231 Difference]: Finished difference. Result has 137 places, 123 transitions, 1216 flow [2024-06-28 02:57:33,221 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1101, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1216, PETRI_PLACES=137, PETRI_TRANSITIONS=123} [2024-06-28 02:57:33,222 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 106 predicate places. [2024-06-28 02:57:33,222 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 123 transitions, 1216 flow [2024-06-28 02:57:33,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:33,222 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:33,222 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:33,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-28 02:57:33,222 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:57:33,222 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:33,223 INFO L85 PathProgramCache]: Analyzing trace with hash 1445215110, now seen corresponding path program 7 times [2024-06-28 02:57:33,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:33,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904493190] [2024-06-28 02:57:33,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:33,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:33,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:33,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:57:33,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:33,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904493190] [2024-06-28 02:57:33,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904493190] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:33,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:33,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:57:33,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602264550] [2024-06-28 02:57:33,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:33,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:57:33,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:33,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:57:33,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:57:33,840 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 02:57:33,841 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 123 transitions, 1216 flow. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:33,841 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:33,841 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 02:57:33,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:34,106 INFO L124 PetriNetUnfolderBase]: 326/600 cut-off events. [2024-06-28 02:57:34,106 INFO L125 PetriNetUnfolderBase]: For 21431/21431 co-relation queries the response was YES. [2024-06-28 02:57:34,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4031 conditions, 600 events. 326/600 cut-off events. For 21431/21431 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2612 event pairs, 45 based on Foata normal form. 2/600 useless extension candidates. Maximal degree in co-relation 3965. Up to 512 conditions per place. [2024-06-28 02:57:34,110 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 108 selfloop transitions, 26 changer transitions 0/137 dead transitions. [2024-06-28 02:57:34,110 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 137 transitions, 1524 flow [2024-06-28 02:57:34,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:57:34,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:57:34,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 116 transitions. [2024-06-28 02:57:34,121 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4027777777777778 [2024-06-28 02:57:34,121 INFO L175 Difference]: Start difference. First operand has 137 places, 123 transitions, 1216 flow. Second operand 9 states and 116 transitions. [2024-06-28 02:57:34,121 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 137 transitions, 1524 flow [2024-06-28 02:57:34,153 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 137 transitions, 1454 flow, removed 17 selfloop flow, removed 5 redundant places. [2024-06-28 02:57:34,154 INFO L231 Difference]: Finished difference. Result has 141 places, 123 transitions, 1203 flow [2024-06-28 02:57:34,155 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1146, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1203, PETRI_PLACES=141, PETRI_TRANSITIONS=123} [2024-06-28 02:57:34,155 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 110 predicate places. [2024-06-28 02:57:34,155 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 123 transitions, 1203 flow [2024-06-28 02:57:34,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:34,155 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:34,155 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:34,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-28 02:57:34,156 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:57:34,156 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:34,156 INFO L85 PathProgramCache]: Analyzing trace with hash 1450929030, now seen corresponding path program 8 times [2024-06-28 02:57:34,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:34,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732012940] [2024-06-28 02:57:34,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:34,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:34,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:34,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:57:34,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:34,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732012940] [2024-06-28 02:57:34,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732012940] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:34,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:34,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:57:34,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226011085] [2024-06-28 02:57:34,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:34,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:57:34,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:34,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:57:34,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:57:34,815 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 02:57:34,816 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 123 transitions, 1203 flow. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:34,816 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:34,816 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 02:57:34,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:35,024 INFO L124 PetriNetUnfolderBase]: 322/595 cut-off events. [2024-06-28 02:57:35,024 INFO L125 PetriNetUnfolderBase]: For 21108/21108 co-relation queries the response was YES. [2024-06-28 02:57:35,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3911 conditions, 595 events. 322/595 cut-off events. For 21108/21108 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2580 event pairs, 48 based on Foata normal form. 2/595 useless extension candidates. Maximal degree in co-relation 3844. Up to 468 conditions per place. [2024-06-28 02:57:35,028 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 95 selfloop transitions, 38 changer transitions 0/136 dead transitions. [2024-06-28 02:57:35,028 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 136 transitions, 1505 flow [2024-06-28 02:57:35,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:57:35,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:57:35,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 117 transitions. [2024-06-28 02:57:35,029 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-28 02:57:35,029 INFO L175 Difference]: Start difference. First operand has 141 places, 123 transitions, 1203 flow. Second operand 9 states and 117 transitions. [2024-06-28 02:57:35,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 136 transitions, 1505 flow [2024-06-28 02:57:35,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 136 transitions, 1409 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-28 02:57:35,058 INFO L231 Difference]: Finished difference. Result has 143 places, 123 transitions, 1188 flow [2024-06-28 02:57:35,058 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1107, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1188, PETRI_PLACES=143, PETRI_TRANSITIONS=123} [2024-06-28 02:57:35,059 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 112 predicate places. [2024-06-28 02:57:35,059 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 123 transitions, 1188 flow [2024-06-28 02:57:35,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:35,059 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:35,059 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:35,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-28 02:57:35,059 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:57:35,060 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:35,060 INFO L85 PathProgramCache]: Analyzing trace with hash 1823004644, now seen corresponding path program 1 times [2024-06-28 02:57:35,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:35,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703222913] [2024-06-28 02:57:35,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:35,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:35,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:36,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:57:36,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:36,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703222913] [2024-06-28 02:57:36,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703222913] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:36,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:36,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:57:36,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609597470] [2024-06-28 02:57:36,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:36,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:57:36,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:36,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:57:36,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:57:36,412 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 02:57:36,412 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 123 transitions, 1188 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 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) [2024-06-28 02:57:36,413 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:36,413 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 02:57:36,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:36,620 INFO L124 PetriNetUnfolderBase]: 300/566 cut-off events. [2024-06-28 02:57:36,621 INFO L125 PetriNetUnfolderBase]: For 20443/20445 co-relation queries the response was YES. [2024-06-28 02:57:36,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3659 conditions, 566 events. 300/566 cut-off events. For 20443/20445 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2517 event pairs, 55 based on Foata normal form. 4/562 useless extension candidates. Maximal degree in co-relation 3591. Up to 480 conditions per place. [2024-06-28 02:57:36,624 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 98 selfloop transitions, 14 changer transitions 0/132 dead transitions. [2024-06-28 02:57:36,624 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 132 transitions, 1432 flow [2024-06-28 02:57:36,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:57:36,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:57:36,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 112 transitions. [2024-06-28 02:57:36,627 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3888888888888889 [2024-06-28 02:57:36,627 INFO L175 Difference]: Start difference. First operand has 143 places, 123 transitions, 1188 flow. Second operand 9 states and 112 transitions. [2024-06-28 02:57:36,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 132 transitions, 1432 flow [2024-06-28 02:57:36,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 132 transitions, 1268 flow, removed 17 selfloop flow, removed 10 redundant places. [2024-06-28 02:57:36,656 INFO L231 Difference]: Finished difference. Result has 142 places, 123 transitions, 1056 flow [2024-06-28 02:57:36,656 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1024, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1056, PETRI_PLACES=142, PETRI_TRANSITIONS=123} [2024-06-28 02:57:36,656 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 111 predicate places. [2024-06-28 02:57:36,657 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 123 transitions, 1056 flow [2024-06-28 02:57:36,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 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) [2024-06-28 02:57:36,657 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:36,657 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:36,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-28 02:57:36,657 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:57:36,658 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:36,658 INFO L85 PathProgramCache]: Analyzing trace with hash 874229954, now seen corresponding path program 1 times [2024-06-28 02:57:36,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:36,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557966759] [2024-06-28 02:57:36,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:36,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:36,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:37,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:57:37,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:37,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557966759] [2024-06-28 02:57:37,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557966759] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:37,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:37,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:57:37,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505369942] [2024-06-28 02:57:37,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:37,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:57:37,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:37,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:57:37,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:57:37,571 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 02:57:37,571 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 123 transitions, 1056 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:37,571 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:37,571 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 02:57:37,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:37,905 INFO L124 PetriNetUnfolderBase]: 317/586 cut-off events. [2024-06-28 02:57:37,905 INFO L125 PetriNetUnfolderBase]: For 19903/19903 co-relation queries the response was YES. [2024-06-28 02:57:37,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3613 conditions, 586 events. 317/586 cut-off events. For 19903/19903 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2550 event pairs, 44 based on Foata normal form. 1/585 useless extension candidates. Maximal degree in co-relation 3547. Up to 483 conditions per place. [2024-06-28 02:57:37,908 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 109 selfloop transitions, 30 changer transitions 0/142 dead transitions. [2024-06-28 02:57:37,908 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 142 transitions, 1412 flow [2024-06-28 02:57:37,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:57:37,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:57:37,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 117 transitions. [2024-06-28 02:57:37,917 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-28 02:57:37,917 INFO L175 Difference]: Start difference. First operand has 142 places, 123 transitions, 1056 flow. Second operand 9 states and 117 transitions. [2024-06-28 02:57:37,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 142 transitions, 1412 flow [2024-06-28 02:57:37,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 142 transitions, 1374 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-28 02:57:37,942 INFO L231 Difference]: Finished difference. Result has 144 places, 125 transitions, 1119 flow [2024-06-28 02:57:37,942 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1018, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1119, PETRI_PLACES=144, PETRI_TRANSITIONS=125} [2024-06-28 02:57:37,942 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 113 predicate places. [2024-06-28 02:57:37,942 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 125 transitions, 1119 flow [2024-06-28 02:57:37,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:37,943 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:37,943 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:37,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-28 02:57:37,943 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:57:37,943 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:37,943 INFO L85 PathProgramCache]: Analyzing trace with hash 874350110, now seen corresponding path program 1 times [2024-06-28 02:57:37,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:37,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354324092] [2024-06-28 02:57:37,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:37,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:37,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:38,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:57:38,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:38,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354324092] [2024-06-28 02:57:38,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354324092] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:38,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:38,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:57:38,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202088899] [2024-06-28 02:57:38,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:38,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:57:38,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:38,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:57:38,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:57:38,738 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 02:57:38,738 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 125 transitions, 1119 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:38,738 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:38,738 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 02:57:38,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:39,004 INFO L124 PetriNetUnfolderBase]: 323/596 cut-off events. [2024-06-28 02:57:39,004 INFO L125 PetriNetUnfolderBase]: For 21760/21760 co-relation queries the response was YES. [2024-06-28 02:57:39,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3753 conditions, 596 events. 323/596 cut-off events. For 21760/21760 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2603 event pairs, 41 based on Foata normal form. 2/596 useless extension candidates. Maximal degree in co-relation 3686. Up to 472 conditions per place. [2024-06-28 02:57:39,008 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 103 selfloop transitions, 37 changer transitions 0/143 dead transitions. [2024-06-28 02:57:39,008 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 143 transitions, 1471 flow [2024-06-28 02:57:39,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:57:39,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:57:39,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 116 transitions. [2024-06-28 02:57:39,021 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4027777777777778 [2024-06-28 02:57:39,021 INFO L175 Difference]: Start difference. First operand has 144 places, 125 transitions, 1119 flow. Second operand 9 states and 116 transitions. [2024-06-28 02:57:39,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 143 transitions, 1471 flow [2024-06-28 02:57:39,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 143 transitions, 1386 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-28 02:57:39,047 INFO L231 Difference]: Finished difference. Result has 146 places, 128 transitions, 1155 flow [2024-06-28 02:57:39,047 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1034, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1155, PETRI_PLACES=146, PETRI_TRANSITIONS=128} [2024-06-28 02:57:39,047 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 115 predicate places. [2024-06-28 02:57:39,048 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 128 transitions, 1155 flow [2024-06-28 02:57:39,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:39,048 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:39,048 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:39,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-28 02:57:39,048 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:57:39,048 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:39,049 INFO L85 PathProgramCache]: Analyzing trace with hash -1190549490, now seen corresponding path program 2 times [2024-06-28 02:57:39,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:39,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607510940] [2024-06-28 02:57:39,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:39,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:39,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:39,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:57:39,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:39,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607510940] [2024-06-28 02:57:39,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607510940] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:39,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:39,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:57:39,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219424124] [2024-06-28 02:57:39,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:39,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:57:39,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:39,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:57:39,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:57:39,865 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 02:57:39,866 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 128 transitions, 1155 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:39,866 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:39,866 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 02:57:39,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:40,122 INFO L124 PetriNetUnfolderBase]: 329/606 cut-off events. [2024-06-28 02:57:40,122 INFO L125 PetriNetUnfolderBase]: For 23248/23248 co-relation queries the response was YES. [2024-06-28 02:57:40,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3913 conditions, 606 events. 329/606 cut-off events. For 23248/23248 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2671 event pairs, 41 based on Foata normal form. 2/606 useless extension candidates. Maximal degree in co-relation 3845. Up to 467 conditions per place. [2024-06-28 02:57:40,126 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 99 selfloop transitions, 43 changer transitions 0/145 dead transitions. [2024-06-28 02:57:40,126 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 145 transitions, 1519 flow [2024-06-28 02:57:40,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:57:40,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:57:40,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 116 transitions. [2024-06-28 02:57:40,127 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4027777777777778 [2024-06-28 02:57:40,127 INFO L175 Difference]: Start difference. First operand has 146 places, 128 transitions, 1155 flow. Second operand 9 states and 116 transitions. [2024-06-28 02:57:40,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 145 transitions, 1519 flow [2024-06-28 02:57:40,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 145 transitions, 1426 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-28 02:57:40,158 INFO L231 Difference]: Finished difference. Result has 148 places, 131 transitions, 1199 flow [2024-06-28 02:57:40,158 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1062, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1199, PETRI_PLACES=148, PETRI_TRANSITIONS=131} [2024-06-28 02:57:40,159 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 117 predicate places. [2024-06-28 02:57:40,159 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 131 transitions, 1199 flow [2024-06-28 02:57:40,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:40,159 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:40,159 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:40,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-28 02:57:40,159 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:57:40,160 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:40,160 INFO L85 PathProgramCache]: Analyzing trace with hash 878998498, now seen corresponding path program 1 times [2024-06-28 02:57:40,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:40,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207028952] [2024-06-28 02:57:40,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:40,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:40,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:41,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:57:41,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:41,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207028952] [2024-06-28 02:57:41,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207028952] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:41,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:41,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:57:41,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473141111] [2024-06-28 02:57:41,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:41,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:57:41,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:41,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:57:41,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:57:41,139 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 02:57:41,140 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 131 transitions, 1199 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:41,140 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:41,140 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 02:57:41,140 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:41,399 INFO L124 PetriNetUnfolderBase]: 332/611 cut-off events. [2024-06-28 02:57:41,399 INFO L125 PetriNetUnfolderBase]: For 23906/23906 co-relation queries the response was YES. [2024-06-28 02:57:41,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4029 conditions, 611 events. 332/611 cut-off events. For 23906/23906 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2707 event pairs, 43 based on Foata normal form. 1/610 useless extension candidates. Maximal degree in co-relation 3960. Up to 531 conditions per place. [2024-06-28 02:57:41,403 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 115 selfloop transitions, 27 changer transitions 0/145 dead transitions. [2024-06-28 02:57:41,403 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 145 transitions, 1537 flow [2024-06-28 02:57:41,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:57:41,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:57:41,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 111 transitions. [2024-06-28 02:57:41,404 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3854166666666667 [2024-06-28 02:57:41,404 INFO L175 Difference]: Start difference. First operand has 148 places, 131 transitions, 1199 flow. Second operand 9 states and 111 transitions. [2024-06-28 02:57:41,404 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 145 transitions, 1537 flow [2024-06-28 02:57:41,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 145 transitions, 1424 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-28 02:57:41,435 INFO L231 Difference]: Finished difference. Result has 150 places, 133 transitions, 1173 flow [2024-06-28 02:57:41,435 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1086, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1173, PETRI_PLACES=150, PETRI_TRANSITIONS=133} [2024-06-28 02:57:41,436 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 119 predicate places. [2024-06-28 02:57:41,436 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 133 transitions, 1173 flow [2024-06-28 02:57:41,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:41,436 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:41,436 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:41,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-28 02:57:41,436 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:57:41,437 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:41,437 INFO L85 PathProgramCache]: Analyzing trace with hash -1190542980, now seen corresponding path program 3 times [2024-06-28 02:57:41,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:41,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198515718] [2024-06-28 02:57:41,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:41,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:41,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:42,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:57:42,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:42,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198515718] [2024-06-28 02:57:42,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198515718] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:42,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:42,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:57:42,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907382974] [2024-06-28 02:57:42,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:42,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:57:42,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:42,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:57:42,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:57:42,265 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 02:57:42,265 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 133 transitions, 1173 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:42,265 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:42,265 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 02:57:42,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:42,514 INFO L124 PetriNetUnfolderBase]: 335/616 cut-off events. [2024-06-28 02:57:42,514 INFO L125 PetriNetUnfolderBase]: For 24736/24736 co-relation queries the response was YES. [2024-06-28 02:57:42,516 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4044 conditions, 616 events. 335/616 cut-off events. For 24736/24736 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2721 event pairs, 40 based on Foata normal form. 1/615 useless extension candidates. Maximal degree in co-relation 3974. Up to 449 conditions per place. [2024-06-28 02:57:42,517 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 98 selfloop transitions, 47 changer transitions 0/148 dead transitions. [2024-06-28 02:57:42,517 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 148 transitions, 1529 flow [2024-06-28 02:57:42,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:57:42,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:57:42,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 116 transitions. [2024-06-28 02:57:42,518 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4027777777777778 [2024-06-28 02:57:42,518 INFO L175 Difference]: Start difference. First operand has 150 places, 133 transitions, 1173 flow. Second operand 9 states and 116 transitions. [2024-06-28 02:57:42,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 148 transitions, 1529 flow [2024-06-28 02:57:42,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 148 transitions, 1458 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-28 02:57:42,547 INFO L231 Difference]: Finished difference. Result has 152 places, 135 transitions, 1233 flow [2024-06-28 02:57:42,548 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1102, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1233, PETRI_PLACES=152, PETRI_TRANSITIONS=135} [2024-06-28 02:57:42,548 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 121 predicate places. [2024-06-28 02:57:42,548 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 135 transitions, 1233 flow [2024-06-28 02:57:42,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:42,548 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:42,548 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:42,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-28 02:57:42,549 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:57:42,549 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:42,549 INFO L85 PathProgramCache]: Analyzing trace with hash 1051481630, now seen corresponding path program 4 times [2024-06-28 02:57:42,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:42,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258812623] [2024-06-28 02:57:42,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:42,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:42,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:43,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:57:43,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:43,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258812623] [2024-06-28 02:57:43,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258812623] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:43,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:43,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:57:43,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315659740] [2024-06-28 02:57:43,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:43,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:57:43,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:43,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:57:43,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:57:43,404 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 02:57:43,404 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 135 transitions, 1233 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:43,404 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:43,404 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 02:57:43,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:43,632 INFO L124 PetriNetUnfolderBase]: 341/626 cut-off events. [2024-06-28 02:57:43,632 INFO L125 PetriNetUnfolderBase]: For 27172/27172 co-relation queries the response was YES. [2024-06-28 02:57:43,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4243 conditions, 626 events. 341/626 cut-off events. For 27172/27172 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2773 event pairs, 44 based on Foata normal form. 2/626 useless extension candidates. Maximal degree in co-relation 4172. Up to 463 conditions per place. [2024-06-28 02:57:43,635 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 98 selfloop transitions, 49 changer transitions 0/150 dead transitions. [2024-06-28 02:57:43,635 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 150 transitions, 1619 flow [2024-06-28 02:57:43,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:57:43,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:57:43,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 115 transitions. [2024-06-28 02:57:43,636 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3993055555555556 [2024-06-28 02:57:43,636 INFO L175 Difference]: Start difference. First operand has 152 places, 135 transitions, 1233 flow. Second operand 9 states and 115 transitions. [2024-06-28 02:57:43,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 150 transitions, 1619 flow [2024-06-28 02:57:43,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 150 transitions, 1504 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-28 02:57:43,668 INFO L231 Difference]: Finished difference. Result has 154 places, 138 transitions, 1277 flow [2024-06-28 02:57:43,669 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1118, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1277, PETRI_PLACES=154, PETRI_TRANSITIONS=138} [2024-06-28 02:57:43,669 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 123 predicate places. [2024-06-28 02:57:43,669 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 138 transitions, 1277 flow [2024-06-28 02:57:43,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:43,669 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:43,669 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:43,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-28 02:57:43,669 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:57:43,670 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:43,670 INFO L85 PathProgramCache]: Analyzing trace with hash 1051488140, now seen corresponding path program 5 times [2024-06-28 02:57:43,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:43,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461135225] [2024-06-28 02:57:43,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:43,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:43,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:44,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:57:44,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:44,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461135225] [2024-06-28 02:57:44,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461135225] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:44,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:44,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:57:44,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253027347] [2024-06-28 02:57:44,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:44,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:57:44,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:44,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:57:44,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:57:44,500 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 02:57:44,500 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 138 transitions, 1277 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:44,500 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:44,500 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 02:57:44,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:44,728 INFO L124 PetriNetUnfolderBase]: 344/631 cut-off events. [2024-06-28 02:57:44,728 INFO L125 PetriNetUnfolderBase]: For 27771/27771 co-relation queries the response was YES. [2024-06-28 02:57:44,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4364 conditions, 631 events. 344/631 cut-off events. For 27771/27771 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 2805 event pairs, 44 based on Foata normal form. 1/630 useless extension candidates. Maximal degree in co-relation 4292. Up to 460 conditions per place. [2024-06-28 02:57:44,731 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 98 selfloop transitions, 51 changer transitions 0/152 dead transitions. [2024-06-28 02:57:44,731 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 152 transitions, 1659 flow [2024-06-28 02:57:44,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:57:44,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:57:44,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 117 transitions. [2024-06-28 02:57:44,732 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-28 02:57:44,732 INFO L175 Difference]: Start difference. First operand has 154 places, 138 transitions, 1277 flow. Second operand 9 states and 117 transitions. [2024-06-28 02:57:44,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 152 transitions, 1659 flow [2024-06-28 02:57:44,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 152 transitions, 1524 flow, removed 21 selfloop flow, removed 7 redundant places. [2024-06-28 02:57:44,764 INFO L231 Difference]: Finished difference. Result has 156 places, 140 transitions, 1289 flow [2024-06-28 02:57:44,764 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1142, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1289, PETRI_PLACES=156, PETRI_TRANSITIONS=140} [2024-06-28 02:57:44,764 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 125 predicate places. [2024-06-28 02:57:44,764 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 140 transitions, 1289 flow [2024-06-28 02:57:44,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:44,765 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:44,765 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:44,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-28 02:57:44,765 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:57:44,765 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:44,765 INFO L85 PathProgramCache]: Analyzing trace with hash 1051488388, now seen corresponding path program 2 times [2024-06-28 02:57:44,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:44,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008385719] [2024-06-28 02:57:44,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:44,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:44,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:45,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:57:45,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:45,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008385719] [2024-06-28 02:57:45,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008385719] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:45,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:45,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:57:45,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616233509] [2024-06-28 02:57:45,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:45,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:57:45,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:45,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:57:45,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:57:45,620 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 02:57:45,620 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 140 transitions, 1289 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:45,620 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:45,620 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 02:57:45,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:45,832 INFO L124 PetriNetUnfolderBase]: 347/636 cut-off events. [2024-06-28 02:57:45,833 INFO L125 PetriNetUnfolderBase]: For 29025/29025 co-relation queries the response was YES. [2024-06-28 02:57:45,835 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4426 conditions, 636 events. 347/636 cut-off events. For 29025/29025 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 2833 event pairs, 42 based on Foata normal form. 1/635 useless extension candidates. Maximal degree in co-relation 4353. Up to 546 conditions per place. [2024-06-28 02:57:45,836 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 117 selfloop transitions, 32 changer transitions 0/152 dead transitions. [2024-06-28 02:57:45,836 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 152 transitions, 1639 flow [2024-06-28 02:57:45,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:57:45,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:57:45,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 110 transitions. [2024-06-28 02:57:45,837 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3819444444444444 [2024-06-28 02:57:45,837 INFO L175 Difference]: Start difference. First operand has 156 places, 140 transitions, 1289 flow. Second operand 9 states and 110 transitions. [2024-06-28 02:57:45,838 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 152 transitions, 1639 flow [2024-06-28 02:57:45,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 152 transitions, 1508 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-28 02:57:45,875 INFO L231 Difference]: Finished difference. Result has 158 places, 142 transitions, 1259 flow [2024-06-28 02:57:45,875 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1158, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1259, PETRI_PLACES=158, PETRI_TRANSITIONS=142} [2024-06-28 02:57:45,875 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 127 predicate places. [2024-06-28 02:57:45,875 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 142 transitions, 1259 flow [2024-06-28 02:57:45,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:45,876 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:45,876 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:45,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-28 02:57:45,876 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:57:45,876 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:45,876 INFO L85 PathProgramCache]: Analyzing trace with hash 1051727398, now seen corresponding path program 3 times [2024-06-28 02:57:45,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:45,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056311722] [2024-06-28 02:57:45,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:45,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:45,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:46,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:57:46,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:46,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056311722] [2024-06-28 02:57:46,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056311722] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:46,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:46,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:57:46,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439999276] [2024-06-28 02:57:46,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:46,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:57:46,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:46,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:57:46,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:57:46,708 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 02:57:46,708 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 142 transitions, 1259 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:46,708 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:46,708 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 02:57:46,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:46,892 INFO L124 PetriNetUnfolderBase]: 363/662 cut-off events. [2024-06-28 02:57:46,892 INFO L125 PetriNetUnfolderBase]: For 33333/33333 co-relation queries the response was YES. [2024-06-28 02:57:46,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4694 conditions, 662 events. 363/662 cut-off events. For 33333/33333 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 2979 event pairs, 41 based on Foata normal form. 2/662 useless extension candidates. Maximal degree in co-relation 4620. Up to 527 conditions per place. [2024-06-28 02:57:46,896 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 115 selfloop transitions, 41 changer transitions 0/159 dead transitions. [2024-06-28 02:57:46,896 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 159 transitions, 1771 flow [2024-06-28 02:57:46,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:57:46,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:57:46,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 115 transitions. [2024-06-28 02:57:46,897 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3993055555555556 [2024-06-28 02:57:46,897 INFO L175 Difference]: Start difference. First operand has 158 places, 142 transitions, 1259 flow. Second operand 9 states and 115 transitions. [2024-06-28 02:57:46,897 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 159 transitions, 1771 flow [2024-06-28 02:57:46,948 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 159 transitions, 1686 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-28 02:57:46,949 INFO L231 Difference]: Finished difference. Result has 160 places, 146 transitions, 1333 flow [2024-06-28 02:57:46,950 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1174, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1333, PETRI_PLACES=160, PETRI_TRANSITIONS=146} [2024-06-28 02:57:46,950 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 129 predicate places. [2024-06-28 02:57:46,950 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 146 transitions, 1333 flow [2024-06-28 02:57:46,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:46,950 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:46,950 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:46,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-28 02:57:46,950 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:57:46,950 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:46,950 INFO L85 PathProgramCache]: Analyzing trace with hash 1051719028, now seen corresponding path program 4 times [2024-06-28 02:57:46,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:46,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577305824] [2024-06-28 02:57:46,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:46,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:46,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:47,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:57:47,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:47,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577305824] [2024-06-28 02:57:47,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577305824] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:47,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:47,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:57:47,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523549351] [2024-06-28 02:57:47,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:47,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:57:47,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:47,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:57:47,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:57:47,772 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 02:57:47,772 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 146 transitions, 1333 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:47,772 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:47,772 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 02:57:47,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:47,988 INFO L124 PetriNetUnfolderBase]: 364/664 cut-off events. [2024-06-28 02:57:47,988 INFO L125 PetriNetUnfolderBase]: For 33707/33707 co-relation queries the response was YES. [2024-06-28 02:57:47,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4740 conditions, 664 events. 364/664 cut-off events. For 33707/33707 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 2969 event pairs, 42 based on Foata normal form. 2/664 useless extension candidates. Maximal degree in co-relation 4665. Up to 530 conditions per place. [2024-06-28 02:57:47,992 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 118 selfloop transitions, 41 changer transitions 0/162 dead transitions. [2024-06-28 02:57:47,992 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 162 transitions, 1831 flow [2024-06-28 02:57:47,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:57:47,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:57:47,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 117 transitions. [2024-06-28 02:57:47,993 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-28 02:57:47,993 INFO L175 Difference]: Start difference. First operand has 160 places, 146 transitions, 1333 flow. Second operand 9 states and 117 transitions. [2024-06-28 02:57:47,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 162 transitions, 1831 flow [2024-06-28 02:57:48,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 162 transitions, 1745 flow, removed 19 selfloop flow, removed 5 redundant places. [2024-06-28 02:57:48,051 INFO L231 Difference]: Finished difference. Result has 164 places, 148 transitions, 1372 flow [2024-06-28 02:57:48,051 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1253, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1372, PETRI_PLACES=164, PETRI_TRANSITIONS=148} [2024-06-28 02:57:48,052 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 133 predicate places. [2024-06-28 02:57:48,052 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 148 transitions, 1372 flow [2024-06-28 02:57:48,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:48,052 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:48,052 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:48,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-28 02:57:48,052 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:57:48,052 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:48,052 INFO L85 PathProgramCache]: Analyzing trace with hash 1051718780, now seen corresponding path program 6 times [2024-06-28 02:57:48,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:48,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601971422] [2024-06-28 02:57:48,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:48,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:48,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:48,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:57:48,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:48,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601971422] [2024-06-28 02:57:48,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601971422] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:48,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:48,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:57:48,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193036407] [2024-06-28 02:57:48,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:48,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:57:48,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:48,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:57:48,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:57:48,878 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 02:57:48,878 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 148 transitions, 1372 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:48,878 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:48,878 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 02:57:48,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:49,101 INFO L124 PetriNetUnfolderBase]: 367/669 cut-off events. [2024-06-28 02:57:49,101 INFO L125 PetriNetUnfolderBase]: For 33933/33933 co-relation queries the response was YES. [2024-06-28 02:57:49,104 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4819 conditions, 669 events. 367/669 cut-off events. For 33933/33933 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 3008 event pairs, 47 based on Foata normal form. 1/668 useless extension candidates. Maximal degree in co-relation 4742. Up to 449 conditions per place. [2024-06-28 02:57:49,106 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 95 selfloop transitions, 63 changer transitions 0/161 dead transitions. [2024-06-28 02:57:49,106 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 161 transitions, 1766 flow [2024-06-28 02:57:49,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:57:49,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:57:49,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 116 transitions. [2024-06-28 02:57:49,108 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4027777777777778 [2024-06-28 02:57:49,108 INFO L175 Difference]: Start difference. First operand has 164 places, 148 transitions, 1372 flow. Second operand 9 states and 116 transitions. [2024-06-28 02:57:49,108 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 161 transitions, 1766 flow [2024-06-28 02:57:49,164 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 161 transitions, 1683 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-28 02:57:49,166 INFO L231 Difference]: Finished difference. Result has 167 places, 150 transitions, 1464 flow [2024-06-28 02:57:49,166 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1289, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1464, PETRI_PLACES=167, PETRI_TRANSITIONS=150} [2024-06-28 02:57:49,166 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 136 predicate places. [2024-06-28 02:57:49,166 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 150 transitions, 1464 flow [2024-06-28 02:57:49,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:49,167 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:49,167 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:49,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-28 02:57:49,167 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:57:49,167 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:49,167 INFO L85 PathProgramCache]: Analyzing trace with hash -811648042, now seen corresponding path program 5 times [2024-06-28 02:57:49,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:49,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343127696] [2024-06-28 02:57:49,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:49,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:49,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:50,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:57:50,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:50,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343127696] [2024-06-28 02:57:50,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343127696] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:50,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:50,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:57:50,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346377190] [2024-06-28 02:57:50,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:50,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:57:50,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:50,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:57:50,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:57:50,104 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 02:57:50,105 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 150 transitions, 1464 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:50,105 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:50,105 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 02:57:50,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:50,292 INFO L124 PetriNetUnfolderBase]: 380/690 cut-off events. [2024-06-28 02:57:50,292 INFO L125 PetriNetUnfolderBase]: For 38169/38169 co-relation queries the response was YES. [2024-06-28 02:57:50,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5199 conditions, 690 events. 380/690 cut-off events. For 38169/38169 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3129 event pairs, 50 based on Foata normal form. 1/687 useless extension candidates. Maximal degree in co-relation 5121. Up to 576 conditions per place. [2024-06-28 02:57:50,297 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 124 selfloop transitions, 40 changer transitions 0/167 dead transitions. [2024-06-28 02:57:50,297 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 167 transitions, 2113 flow [2024-06-28 02:57:50,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:57:50,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:57:50,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 115 transitions. [2024-06-28 02:57:50,305 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3993055555555556 [2024-06-28 02:57:50,305 INFO L175 Difference]: Start difference. First operand has 167 places, 150 transitions, 1464 flow. Second operand 9 states and 115 transitions. [2024-06-28 02:57:50,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 167 transitions, 2113 flow [2024-06-28 02:57:50,368 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 167 transitions, 1954 flow, removed 18 selfloop flow, removed 7 redundant places. [2024-06-28 02:57:50,370 INFO L231 Difference]: Finished difference. Result has 170 places, 157 transitions, 1510 flow [2024-06-28 02:57:50,370 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1305, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1510, PETRI_PLACES=170, PETRI_TRANSITIONS=157} [2024-06-28 02:57:50,371 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 139 predicate places. [2024-06-28 02:57:50,371 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 157 transitions, 1510 flow [2024-06-28 02:57:50,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:50,371 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:50,371 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:50,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-28 02:57:50,371 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:57:50,371 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:50,371 INFO L85 PathProgramCache]: Analyzing trace with hash 382973052, now seen corresponding path program 7 times [2024-06-28 02:57:50,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:50,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042341391] [2024-06-28 02:57:50,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:50,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:50,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:51,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:57:51,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:51,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042341391] [2024-06-28 02:57:51,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042341391] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:51,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:51,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:57:51,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492296536] [2024-06-28 02:57:51,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:51,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:57:51,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:51,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:57:51,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:57:51,268 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 02:57:51,268 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 157 transitions, 1510 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:51,268 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:51,268 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 02:57:51,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:51,480 INFO L124 PetriNetUnfolderBase]: 393/711 cut-off events. [2024-06-28 02:57:51,480 INFO L125 PetriNetUnfolderBase]: For 42698/42698 co-relation queries the response was YES. [2024-06-28 02:57:51,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5494 conditions, 711 events. 393/711 cut-off events. For 42698/42698 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 3239 event pairs, 58 based on Foata normal form. 1/707 useless extension candidates. Maximal degree in co-relation 5414. Up to 521 conditions per place. [2024-06-28 02:57:51,486 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 114 selfloop transitions, 56 changer transitions 0/173 dead transitions. [2024-06-28 02:57:51,486 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 173 transitions, 2106 flow [2024-06-28 02:57:51,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:57:51,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:57:51,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 119 transitions. [2024-06-28 02:57:51,487 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4131944444444444 [2024-06-28 02:57:51,487 INFO L175 Difference]: Start difference. First operand has 170 places, 157 transitions, 1510 flow. Second operand 9 states and 119 transitions. [2024-06-28 02:57:51,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 173 transitions, 2106 flow [2024-06-28 02:57:51,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 173 transitions, 2027 flow, removed 21 selfloop flow, removed 4 redundant places. [2024-06-28 02:57:51,560 INFO L231 Difference]: Finished difference. Result has 176 places, 162 transitions, 1671 flow [2024-06-28 02:57:51,560 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1431, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1671, PETRI_PLACES=176, PETRI_TRANSITIONS=162} [2024-06-28 02:57:51,560 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 145 predicate places. [2024-06-28 02:57:51,560 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 162 transitions, 1671 flow [2024-06-28 02:57:51,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:51,561 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:51,561 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:51,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-28 02:57:51,561 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:57:51,561 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:51,561 INFO L85 PathProgramCache]: Analyzing trace with hash -1296108574, now seen corresponding path program 6 times [2024-06-28 02:57:51,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:51,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798449399] [2024-06-28 02:57:51,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:51,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:51,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:52,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:57:52,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:52,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798449399] [2024-06-28 02:57:52,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798449399] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:52,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:52,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:57:52,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999652162] [2024-06-28 02:57:52,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:52,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:57:52,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:52,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:57:52,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:57:52,481 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 02:57:52,481 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 162 transitions, 1671 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:52,481 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:52,481 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 02:57:52,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:52,804 INFO L124 PetriNetUnfolderBase]: 399/721 cut-off events. [2024-06-28 02:57:52,804 INFO L125 PetriNetUnfolderBase]: For 46334/46334 co-relation queries the response was YES. [2024-06-28 02:57:52,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5809 conditions, 721 events. 399/721 cut-off events. For 46334/46334 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3275 event pairs, 61 based on Foata normal form. 2/721 useless extension candidates. Maximal degree in co-relation 5726. Up to 659 conditions per place. [2024-06-28 02:57:52,808 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 155 selfloop transitions, 16 changer transitions 0/174 dead transitions. [2024-06-28 02:57:52,808 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 174 transitions, 2091 flow [2024-06-28 02:57:52,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:57:52,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:57:52,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 108 transitions. [2024-06-28 02:57:52,809 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-28 02:57:52,809 INFO L175 Difference]: Start difference. First operand has 176 places, 162 transitions, 1671 flow. Second operand 9 states and 108 transitions. [2024-06-28 02:57:52,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 174 transitions, 2091 flow [2024-06-28 02:57:52,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 174 transitions, 1984 flow, removed 23 selfloop flow, removed 5 redundant places. [2024-06-28 02:57:52,894 INFO L231 Difference]: Finished difference. Result has 180 places, 164 transitions, 1645 flow [2024-06-28 02:57:52,894 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1564, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1645, PETRI_PLACES=180, PETRI_TRANSITIONS=164} [2024-06-28 02:57:52,895 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 149 predicate places. [2024-06-28 02:57:52,895 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 164 transitions, 1645 flow [2024-06-28 02:57:52,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:52,895 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:52,895 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:52,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-28 02:57:52,896 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:57:52,896 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:52,896 INFO L85 PathProgramCache]: Analyzing trace with hash -1296405244, now seen corresponding path program 7 times [2024-06-28 02:57:52,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:52,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561468020] [2024-06-28 02:57:52,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:52,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:52,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:53,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:57:53,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:53,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561468020] [2024-06-28 02:57:53,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561468020] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:53,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:53,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:57:53,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644210474] [2024-06-28 02:57:53,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:53,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:57:53,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:53,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:57:53,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:57:53,873 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 02:57:53,873 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 164 transitions, 1645 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:53,873 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:53,873 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 02:57:53,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:54,088 INFO L124 PetriNetUnfolderBase]: 402/726 cut-off events. [2024-06-28 02:57:54,088 INFO L125 PetriNetUnfolderBase]: For 46463/46463 co-relation queries the response was YES. [2024-06-28 02:57:54,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5880 conditions, 726 events. 402/726 cut-off events. For 46463/46463 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 3326 event pairs, 48 based on Foata normal form. 1/723 useless extension candidates. Maximal degree in co-relation 5795. Up to 549 conditions per place. [2024-06-28 02:57:54,093 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 123 selfloop transitions, 60 changer transitions 0/186 dead transitions. [2024-06-28 02:57:54,093 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 186 transitions, 2409 flow [2024-06-28 02:57:54,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:57:54,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:57:54,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 116 transitions. [2024-06-28 02:57:54,094 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4027777777777778 [2024-06-28 02:57:54,094 INFO L175 Difference]: Start difference. First operand has 180 places, 164 transitions, 1645 flow. Second operand 9 states and 116 transitions. [2024-06-28 02:57:54,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 186 transitions, 2409 flow [2024-06-28 02:57:54,163 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 186 transitions, 2328 flow, removed 25 selfloop flow, removed 7 redundant places. [2024-06-28 02:57:54,165 INFO L231 Difference]: Finished difference. Result has 185 places, 175 transitions, 1911 flow [2024-06-28 02:57:54,166 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1586, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1911, PETRI_PLACES=185, PETRI_TRANSITIONS=175} [2024-06-28 02:57:54,166 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 154 predicate places. [2024-06-28 02:57:54,166 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 175 transitions, 1911 flow [2024-06-28 02:57:54,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:54,166 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:54,166 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:54,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-28 02:57:54,166 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:57:54,166 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:54,167 INFO L85 PathProgramCache]: Analyzing trace with hash 668072922, now seen corresponding path program 8 times [2024-06-28 02:57:54,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:54,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124039361] [2024-06-28 02:57:54,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:54,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:54,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:55,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:57:55,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:55,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124039361] [2024-06-28 02:57:55,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124039361] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:55,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:55,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:57:55,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542520898] [2024-06-28 02:57:55,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:55,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:57:55,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:55,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:57:55,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:57:55,168 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 02:57:55,168 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 175 transitions, 1911 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:55,168 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:55,168 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 02:57:55,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:55,390 INFO L124 PetriNetUnfolderBase]: 400/723 cut-off events. [2024-06-28 02:57:55,390 INFO L125 PetriNetUnfolderBase]: For 47014/47014 co-relation queries the response was YES. [2024-06-28 02:57:55,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6003 conditions, 723 events. 400/723 cut-off events. For 47014/47014 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3303 event pairs, 55 based on Foata normal form. 1/719 useless extension candidates. Maximal degree in co-relation 5914. Up to 454 conditions per place. [2024-06-28 02:57:55,395 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 104 selfloop transitions, 80 changer transitions 0/187 dead transitions. [2024-06-28 02:57:55,395 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 187 transitions, 2473 flow [2024-06-28 02:57:55,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:57:55,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:57:55,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 117 transitions. [2024-06-28 02:57:55,396 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-28 02:57:55,396 INFO L175 Difference]: Start difference. First operand has 185 places, 175 transitions, 1911 flow. Second operand 9 states and 117 transitions. [2024-06-28 02:57:55,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 187 transitions, 2473 flow [2024-06-28 02:57:55,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 187 transitions, 2380 flow, removed 29 selfloop flow, removed 3 redundant places. [2024-06-28 02:57:55,472 INFO L231 Difference]: Finished difference. Result has 191 places, 177 transitions, 2037 flow [2024-06-28 02:57:55,472 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1818, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2037, PETRI_PLACES=191, PETRI_TRANSITIONS=177} [2024-06-28 02:57:55,473 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 160 predicate places. [2024-06-28 02:57:55,473 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 177 transitions, 2037 flow [2024-06-28 02:57:55,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:55,473 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:55,473 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:55,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-28 02:57:55,473 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:57:55,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:55,474 INFO L85 PathProgramCache]: Analyzing trace with hash 382981670, now seen corresponding path program 8 times [2024-06-28 02:57:55,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:55,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857798954] [2024-06-28 02:57:55,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:55,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:55,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:56,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:57:56,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:56,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857798954] [2024-06-28 02:57:56,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857798954] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:56,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:56,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:57:56,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124517344] [2024-06-28 02:57:56,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:56,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:57:56,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:56,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:57:56,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:57:56,399 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 02:57:56,399 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 177 transitions, 2037 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:56,399 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:56,399 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 02:57:56,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:56,605 INFO L124 PetriNetUnfolderBase]: 398/720 cut-off events. [2024-06-28 02:57:56,606 INFO L125 PetriNetUnfolderBase]: For 47346/47346 co-relation queries the response was YES. [2024-06-28 02:57:56,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6107 conditions, 720 events. 398/720 cut-off events. For 47346/47346 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 3289 event pairs, 50 based on Foata normal form. 1/717 useless extension candidates. Maximal degree in co-relation 6016. Up to 607 conditions per place. [2024-06-28 02:57:56,611 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 142 selfloop transitions, 41 changer transitions 0/186 dead transitions. [2024-06-28 02:57:56,611 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 186 transitions, 2529 flow [2024-06-28 02:57:56,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:57:56,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:57:56,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 113 transitions. [2024-06-28 02:57:56,612 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3923611111111111 [2024-06-28 02:57:56,612 INFO L175 Difference]: Start difference. First operand has 191 places, 177 transitions, 2037 flow. Second operand 9 states and 113 transitions. [2024-06-28 02:57:56,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 186 transitions, 2529 flow [2024-06-28 02:57:56,692 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 186 transitions, 2302 flow, removed 35 selfloop flow, removed 7 redundant places. [2024-06-28 02:57:56,694 INFO L231 Difference]: Finished difference. Result has 193 places, 177 transitions, 1897 flow [2024-06-28 02:57:56,695 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1810, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1897, PETRI_PLACES=193, PETRI_TRANSITIONS=177} [2024-06-28 02:57:56,695 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 162 predicate places. [2024-06-28 02:57:56,695 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 177 transitions, 1897 flow [2024-06-28 02:57:56,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:56,695 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:56,695 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:56,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-28 02:57:56,696 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:57:56,696 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:56,696 INFO L85 PathProgramCache]: Analyzing trace with hash 668081540, now seen corresponding path program 9 times [2024-06-28 02:57:56,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:56,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464879559] [2024-06-28 02:57:56,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:56,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:56,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:57,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:57:57,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:57,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464879559] [2024-06-28 02:57:57,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464879559] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:57,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:57,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:57:57,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530150808] [2024-06-28 02:57:57,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:57,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:57:57,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:57,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:57:57,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:57:57,641 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 02:57:57,641 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 177 transitions, 1897 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:57,641 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:57,641 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 02:57:57,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:57,842 INFO L124 PetriNetUnfolderBase]: 396/717 cut-off events. [2024-06-28 02:57:57,842 INFO L125 PetriNetUnfolderBase]: For 47039/47039 co-relation queries the response was YES. [2024-06-28 02:57:57,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5894 conditions, 717 events. 396/717 cut-off events. For 47039/47039 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3256 event pairs, 48 based on Foata normal form. 1/714 useless extension candidates. Maximal degree in co-relation 5802. Up to 542 conditions per place. [2024-06-28 02:57:57,847 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 125 selfloop transitions, 61 changer transitions 0/189 dead transitions. [2024-06-28 02:57:57,847 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 189 transitions, 2422 flow [2024-06-28 02:57:57,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:57:57,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:57:57,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 116 transitions. [2024-06-28 02:57:57,848 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4027777777777778 [2024-06-28 02:57:57,848 INFO L175 Difference]: Start difference. First operand has 193 places, 177 transitions, 1897 flow. Second operand 9 states and 116 transitions. [2024-06-28 02:57:57,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 189 transitions, 2422 flow [2024-06-28 02:57:57,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 189 transitions, 2307 flow, removed 19 selfloop flow, removed 7 redundant places. [2024-06-28 02:57:57,934 INFO L231 Difference]: Finished difference. Result has 195 places, 179 transitions, 1925 flow [2024-06-28 02:57:57,935 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1788, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1925, PETRI_PLACES=195, PETRI_TRANSITIONS=179} [2024-06-28 02:57:57,935 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 164 predicate places. [2024-06-28 02:57:57,935 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 179 transitions, 1925 flow [2024-06-28 02:57:57,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:57,935 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:57,935 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:57,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-28 02:57:57,936 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:57:57,936 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:57,936 INFO L85 PathProgramCache]: Analyzing trace with hash 382735902, now seen corresponding path program 9 times [2024-06-28 02:57:57,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:57,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958916375] [2024-06-28 02:57:57,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:57,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:57,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:58,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:57:58,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:58,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958916375] [2024-06-28 02:57:58,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958916375] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:58,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:58,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:57:58,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356286695] [2024-06-28 02:57:58,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:58,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:57:58,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:58,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:57:58,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:57:58,794 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 02:57:58,795 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 179 transitions, 1925 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:58,795 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:58,795 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 02:57:58,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:59,006 INFO L124 PetriNetUnfolderBase]: 397/719 cut-off events. [2024-06-28 02:57:59,006 INFO L125 PetriNetUnfolderBase]: For 48748/48748 co-relation queries the response was YES. [2024-06-28 02:57:59,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5891 conditions, 719 events. 397/719 cut-off events. For 48748/48748 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 3285 event pairs, 55 based on Foata normal form. 2/716 useless extension candidates. Maximal degree in co-relation 5798. Up to 545 conditions per place. [2024-06-28 02:57:59,012 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 137 selfloop transitions, 51 changer transitions 0/191 dead transitions. [2024-06-28 02:57:59,012 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 191 transitions, 2409 flow [2024-06-28 02:57:59,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:57:59,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:57:59,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 114 transitions. [2024-06-28 02:57:59,012 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3958333333333333 [2024-06-28 02:57:59,013 INFO L175 Difference]: Start difference. First operand has 195 places, 179 transitions, 1925 flow. Second operand 9 states and 114 transitions. [2024-06-28 02:57:59,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 191 transitions, 2409 flow [2024-06-28 02:57:59,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 191 transitions, 2296 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-28 02:57:59,085 INFO L231 Difference]: Finished difference. Result has 199 places, 181 transitions, 1970 flow [2024-06-28 02:57:59,085 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1812, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1970, PETRI_PLACES=199, PETRI_TRANSITIONS=181} [2024-06-28 02:57:59,085 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 168 predicate places. [2024-06-28 02:57:59,085 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 181 transitions, 1970 flow [2024-06-28 02:57:59,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:59,085 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:59,085 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:59,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-28 02:57:59,085 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:57:59,086 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:59,086 INFO L85 PathProgramCache]: Analyzing trace with hash 382742660, now seen corresponding path program 10 times [2024-06-28 02:57:59,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:59,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550601877] [2024-06-28 02:57:59,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:59,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:59,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:59,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:57:59,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:59,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550601877] [2024-06-28 02:57:59,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550601877] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:59,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:59,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:57:59,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091686246] [2024-06-28 02:57:59,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:59,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:57:59,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:59,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:57:59,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:57:59,952 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 02:57:59,953 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 181 transitions, 1970 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:59,953 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:59,953 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 02:57:59,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:58:00,158 INFO L124 PetriNetUnfolderBase]: 398/721 cut-off events. [2024-06-28 02:58:00,158 INFO L125 PetriNetUnfolderBase]: For 48901/48901 co-relation queries the response was YES. [2024-06-28 02:58:00,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5899 conditions, 721 events. 398/721 cut-off events. For 48901/48901 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 3308 event pairs, 50 based on Foata normal form. 2/719 useless extension candidates. Maximal degree in co-relation 5805. Up to 621 conditions per place. [2024-06-28 02:58:00,163 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 154 selfloop transitions, 35 changer transitions 0/192 dead transitions. [2024-06-28 02:58:00,163 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 192 transitions, 2425 flow [2024-06-28 02:58:00,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:58:00,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:58:00,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 110 transitions. [2024-06-28 02:58:00,164 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3819444444444444 [2024-06-28 02:58:00,164 INFO L175 Difference]: Start difference. First operand has 199 places, 181 transitions, 1970 flow. Second operand 9 states and 110 transitions. [2024-06-28 02:58:00,164 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 192 transitions, 2425 flow [2024-06-28 02:58:00,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 192 transitions, 2249 flow, removed 39 selfloop flow, removed 7 redundant places. [2024-06-28 02:58:00,240 INFO L231 Difference]: Finished difference. Result has 201 places, 183 transitions, 1924 flow [2024-06-28 02:58:00,240 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1800, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1924, PETRI_PLACES=201, PETRI_TRANSITIONS=183} [2024-06-28 02:58:00,241 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 170 predicate places. [2024-06-28 02:58:00,241 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 183 transitions, 1924 flow [2024-06-28 02:58:00,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:00,241 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:58:00,241 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:58:00,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-28 02:58:00,241 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:58:00,242 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:58:00,242 INFO L85 PathProgramCache]: Analyzing trace with hash 920746364, now seen corresponding path program 10 times [2024-06-28 02:58:00,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:58:00,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717512148] [2024-06-28 02:58:00,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:58:00,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:58:00,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:58:01,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:58:01,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:58:01,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717512148] [2024-06-28 02:58:01,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717512148] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:58:01,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:58:01,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:58:01,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180040779] [2024-06-28 02:58:01,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:58:01,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:58:01,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:58:01,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:58:01,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:58:01,097 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 02:58:01,097 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 183 transitions, 1924 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:01,097 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:58:01,097 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 02:58:01,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:58:01,337 INFO L124 PetriNetUnfolderBase]: 396/718 cut-off events. [2024-06-28 02:58:01,338 INFO L125 PetriNetUnfolderBase]: For 46638/46638 co-relation queries the response was YES. [2024-06-28 02:58:01,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5720 conditions, 718 events. 396/718 cut-off events. For 46638/46638 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 3302 event pairs, 55 based on Foata normal form. 1/714 useless extension candidates. Maximal degree in co-relation 5625. Up to 538 conditions per place. [2024-06-28 02:58:01,344 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 136 selfloop transitions, 54 changer transitions 0/193 dead transitions. [2024-06-28 02:58:01,344 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 193 transitions, 2366 flow [2024-06-28 02:58:01,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:58:01,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:58:01,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 116 transitions. [2024-06-28 02:58:01,345 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4027777777777778 [2024-06-28 02:58:01,345 INFO L175 Difference]: Start difference. First operand has 201 places, 183 transitions, 1924 flow. Second operand 9 states and 116 transitions. [2024-06-28 02:58:01,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 193 transitions, 2366 flow [2024-06-28 02:58:01,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 193 transitions, 2232 flow, removed 34 selfloop flow, removed 7 redundant places. [2024-06-28 02:58:01,446 INFO L231 Difference]: Finished difference. Result has 203 places, 183 transitions, 1903 flow [2024-06-28 02:58:01,446 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1790, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1903, PETRI_PLACES=203, PETRI_TRANSITIONS=183} [2024-06-28 02:58:01,447 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 172 predicate places. [2024-06-28 02:58:01,447 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 183 transitions, 1903 flow [2024-06-28 02:58:01,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:01,447 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:58:01,447 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:58:01,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-28 02:58:01,447 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:58:01,447 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:58:01,448 INFO L85 PathProgramCache]: Analyzing trace with hash 837572578, now seen corresponding path program 1 times [2024-06-28 02:58:01,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:58:01,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623252853] [2024-06-28 02:58:01,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:58:01,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:58:01,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:58:02,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:58:02,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:58:02,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623252853] [2024-06-28 02:58:02,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623252853] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:58:02,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:58:02,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:58:02,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202828809] [2024-06-28 02:58:02,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:58:02,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:58:02,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:58:02,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:58:02,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:58:02,534 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 02:58:02,534 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 183 transitions, 1903 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:02,534 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:58:02,534 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 02:58:02,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:58:02,948 INFO L124 PetriNetUnfolderBase]: 399/725 cut-off events. [2024-06-28 02:58:02,948 INFO L125 PetriNetUnfolderBase]: For 48136/48136 co-relation queries the response was YES. [2024-06-28 02:58:02,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5805 conditions, 725 events. 399/725 cut-off events. For 48136/48136 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 3341 event pairs, 43 based on Foata normal form. 1/724 useless extension candidates. Maximal degree in co-relation 5709. Up to 617 conditions per place. [2024-06-28 02:58:02,954 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 168 selfloop transitions, 32 changer transitions 0/203 dead transitions. [2024-06-28 02:58:02,954 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 203 transitions, 2403 flow [2024-06-28 02:58:02,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:58:02,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:58:02,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-28 02:58:02,955 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.396875 [2024-06-28 02:58:02,955 INFO L175 Difference]: Start difference. First operand has 203 places, 183 transitions, 1903 flow. Second operand 10 states and 127 transitions. [2024-06-28 02:58:02,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 203 transitions, 2403 flow [2024-06-28 02:58:03,046 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 203 transitions, 2277 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-28 02:58:03,049 INFO L231 Difference]: Finished difference. Result has 205 places, 185 transitions, 1902 flow [2024-06-28 02:58:03,049 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1777, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1902, PETRI_PLACES=205, PETRI_TRANSITIONS=185} [2024-06-28 02:58:03,049 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 174 predicate places. [2024-06-28 02:58:03,049 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 185 transitions, 1902 flow [2024-06-28 02:58:03,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:03,050 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:58:03,050 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:58:03,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-28 02:58:03,050 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:58:03,050 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:58:03,050 INFO L85 PathProgramCache]: Analyzing trace with hash 1835507427, now seen corresponding path program 1 times [2024-06-28 02:58:03,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:58:03,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062334054] [2024-06-28 02:58:03,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:58:03,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:58:03,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:58:03,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:58:03,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:58:03,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062334054] [2024-06-28 02:58:03,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062334054] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:58:03,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:58:03,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:58:03,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781441484] [2024-06-28 02:58:03,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:58:03,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:58:03,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:58:03,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:58:03,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:58:03,912 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 02:58:03,912 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 185 transitions, 1902 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:03,912 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:58:03,912 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 02:58:03,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:58:04,253 INFO L124 PetriNetUnfolderBase]: 405/735 cut-off events. [2024-06-28 02:58:04,253 INFO L125 PetriNetUnfolderBase]: For 51480/51480 co-relation queries the response was YES. [2024-06-28 02:58:04,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5866 conditions, 735 events. 405/735 cut-off events. For 51480/51480 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 3387 event pairs, 40 based on Foata normal form. 2/735 useless extension candidates. Maximal degree in co-relation 5769. Up to 603 conditions per place. [2024-06-28 02:58:04,259 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 161 selfloop transitions, 40 changer transitions 0/204 dead transitions. [2024-06-28 02:58:04,260 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 204 transitions, 2418 flow [2024-06-28 02:58:04,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:58:04,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:58:04,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-28 02:58:04,260 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.396875 [2024-06-28 02:58:04,260 INFO L175 Difference]: Start difference. First operand has 205 places, 185 transitions, 1902 flow. Second operand 10 states and 127 transitions. [2024-06-28 02:58:04,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 204 transitions, 2418 flow [2024-06-28 02:58:04,365 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 204 transitions, 2309 flow, removed 24 selfloop flow, removed 8 redundant places. [2024-06-28 02:58:04,368 INFO L231 Difference]: Finished difference. Result has 207 places, 188 transitions, 1939 flow [2024-06-28 02:58:04,368 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1793, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1939, PETRI_PLACES=207, PETRI_TRANSITIONS=188} [2024-06-28 02:58:04,368 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 176 predicate places. [2024-06-28 02:58:04,368 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 188 transitions, 1939 flow [2024-06-28 02:58:04,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:04,369 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:58:04,369 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:58:04,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-28 02:58:04,369 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:58:04,369 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:58:04,369 INFO L85 PathProgramCache]: Analyzing trace with hash 1603781784, now seen corresponding path program 2 times [2024-06-28 02:58:04,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:58:04,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656254906] [2024-06-28 02:58:04,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:58:04,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:58:04,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:58:05,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:58:05,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:58:05,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656254906] [2024-06-28 02:58:05,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656254906] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:58:05,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:58:05,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:58:05,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682551587] [2024-06-28 02:58:05,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:58:05,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:58:05,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:58:05,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:58:05,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:58:05,499 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 02:58:05,499 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 188 transitions, 1939 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:05,499 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:58:05,499 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 02:58:05,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:58:05,899 INFO L124 PetriNetUnfolderBase]: 408/742 cut-off events. [2024-06-28 02:58:05,899 INFO L125 PetriNetUnfolderBase]: For 52259/52259 co-relation queries the response was YES. [2024-06-28 02:58:05,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6004 conditions, 742 events. 408/742 cut-off events. For 52259/52259 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 3448 event pairs, 40 based on Foata normal form. 1/741 useless extension candidates. Maximal degree in co-relation 5906. Up to 611 conditions per place. [2024-06-28 02:58:05,906 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 164 selfloop transitions, 39 changer transitions 0/206 dead transitions. [2024-06-28 02:58:05,906 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 206 transitions, 2465 flow [2024-06-28 02:58:05,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:58:05,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:58:05,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-28 02:58:05,907 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39375 [2024-06-28 02:58:05,907 INFO L175 Difference]: Start difference. First operand has 207 places, 188 transitions, 1939 flow. Second operand 10 states and 126 transitions. [2024-06-28 02:58:05,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 206 transitions, 2465 flow [2024-06-28 02:58:06,015 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 206 transitions, 2341 flow, removed 24 selfloop flow, removed 8 redundant places. [2024-06-28 02:58:06,017 INFO L231 Difference]: Finished difference. Result has 209 places, 190 transitions, 1960 flow [2024-06-28 02:58:06,018 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1815, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1960, PETRI_PLACES=209, PETRI_TRANSITIONS=190} [2024-06-28 02:58:06,018 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 178 predicate places. [2024-06-28 02:58:06,018 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 190 transitions, 1960 flow [2024-06-28 02:58:06,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:06,019 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:58:06,019 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:58:06,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-28 02:58:06,019 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:58:06,019 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:58:06,019 INFO L85 PathProgramCache]: Analyzing trace with hash 1747672314, now seen corresponding path program 3 times [2024-06-28 02:58:06,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:58:06,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317289669] [2024-06-28 02:58:06,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:58:06,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:58:06,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:58:06,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:58:06,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:58:06,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317289669] [2024-06-28 02:58:06,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317289669] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:58:06,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:58:06,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:58:06,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317181173] [2024-06-28 02:58:06,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:58:06,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:58:06,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:58:06,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:58:06,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:58:07,033 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 02:58:07,033 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 190 transitions, 1960 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:07,033 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:58:07,033 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 02:58:07,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:58:07,382 INFO L124 PetriNetUnfolderBase]: 411/749 cut-off events. [2024-06-28 02:58:07,383 INFO L125 PetriNetUnfolderBase]: For 54454/54454 co-relation queries the response was YES. [2024-06-28 02:58:07,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6074 conditions, 749 events. 411/749 cut-off events. For 54454/54454 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 3489 event pairs, 40 based on Foata normal form. 1/748 useless extension candidates. Maximal degree in co-relation 5975. Up to 601 conditions per place. [2024-06-28 02:58:07,390 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 159 selfloop transitions, 45 changer transitions 0/207 dead transitions. [2024-06-28 02:58:07,390 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 207 transitions, 2510 flow [2024-06-28 02:58:07,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:58:07,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:58:07,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-28 02:58:07,391 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39375 [2024-06-28 02:58:07,391 INFO L175 Difference]: Start difference. First operand has 209 places, 190 transitions, 1960 flow. Second operand 10 states and 126 transitions. [2024-06-28 02:58:07,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 207 transitions, 2510 flow [2024-06-28 02:58:07,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 207 transitions, 2381 flow, removed 27 selfloop flow, removed 8 redundant places. [2024-06-28 02:58:07,500 INFO L231 Difference]: Finished difference. Result has 211 places, 192 transitions, 1992 flow [2024-06-28 02:58:07,501 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1831, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1992, PETRI_PLACES=211, PETRI_TRANSITIONS=192} [2024-06-28 02:58:07,501 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 180 predicate places. [2024-06-28 02:58:07,501 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 192 transitions, 1992 flow [2024-06-28 02:58:07,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:07,501 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:58:07,501 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:58:07,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-28 02:58:07,501 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:58:07,502 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:58:07,502 INFO L85 PathProgramCache]: Analyzing trace with hash 1478941221, now seen corresponding path program 2 times [2024-06-28 02:58:07,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:58:07,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915599920] [2024-06-28 02:58:07,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:58:07,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:58:07,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:58:08,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:58:08,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:58:08,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915599920] [2024-06-28 02:58:08,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915599920] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:58:08,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:58:08,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:58:08,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060972910] [2024-06-28 02:58:08,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:58:08,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:58:08,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:58:08,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:58:08,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:58:08,386 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 02:58:08,386 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 192 transitions, 1992 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:08,386 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:58:08,386 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 02:58:08,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:58:08,706 INFO L124 PetriNetUnfolderBase]: 417/759 cut-off events. [2024-06-28 02:58:08,707 INFO L125 PetriNetUnfolderBase]: For 58136/58136 co-relation queries the response was YES. [2024-06-28 02:58:08,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6179 conditions, 759 events. 417/759 cut-off events. For 58136/58136 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 3569 event pairs, 40 based on Foata normal form. 2/759 useless extension candidates. Maximal degree in co-relation 6079. Up to 608 conditions per place. [2024-06-28 02:58:08,713 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 161 selfloop transitions, 46 changer transitions 0/210 dead transitions. [2024-06-28 02:58:08,713 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 210 transitions, 2550 flow [2024-06-28 02:58:08,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:58:08,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:58:08,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-28 02:58:08,714 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.396875 [2024-06-28 02:58:08,714 INFO L175 Difference]: Start difference. First operand has 211 places, 192 transitions, 1992 flow. Second operand 10 states and 127 transitions. [2024-06-28 02:58:08,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 210 transitions, 2550 flow [2024-06-28 02:58:08,819 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 210 transitions, 2405 flow, removed 29 selfloop flow, removed 8 redundant places. [2024-06-28 02:58:08,821 INFO L231 Difference]: Finished difference. Result has 213 places, 195 transitions, 2015 flow [2024-06-28 02:58:08,822 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1847, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2015, PETRI_PLACES=213, PETRI_TRANSITIONS=195} [2024-06-28 02:58:08,822 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 182 predicate places. [2024-06-28 02:58:08,822 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 195 transitions, 2015 flow [2024-06-28 02:58:08,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:08,822 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:58:08,822 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:58:08,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-28 02:58:08,822 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:58:08,823 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:58:08,823 INFO L85 PathProgramCache]: Analyzing trace with hash 1747874341, now seen corresponding path program 3 times [2024-06-28 02:58:08,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:58:08,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982447276] [2024-06-28 02:58:08,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:58:08,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:58:08,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:58:09,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:58:09,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:58:09,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982447276] [2024-06-28 02:58:09,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982447276] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:58:09,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:58:09,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:58:09,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082243058] [2024-06-28 02:58:09,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:58:09,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:58:09,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:58:09,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:58:09,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:58:09,680 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 02:58:09,680 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 195 transitions, 2015 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:09,680 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:58:09,680 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 02:58:09,681 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:58:10,006 INFO L124 PetriNetUnfolderBase]: 448/809 cut-off events. [2024-06-28 02:58:10,007 INFO L125 PetriNetUnfolderBase]: For 69808/69808 co-relation queries the response was YES. [2024-06-28 02:58:10,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6982 conditions, 809 events. 448/809 cut-off events. For 69808/69808 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 3836 event pairs, 39 based on Foata normal form. 2/809 useless extension candidates. Maximal degree in co-relation 6881. Up to 587 conditions per place. [2024-06-28 02:58:10,013 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 161 selfloop transitions, 58 changer transitions 0/222 dead transitions. [2024-06-28 02:58:10,013 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 222 transitions, 2985 flow [2024-06-28 02:58:10,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:58:10,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:58:10,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 133 transitions. [2024-06-28 02:58:10,014 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.415625 [2024-06-28 02:58:10,014 INFO L175 Difference]: Start difference. First operand has 213 places, 195 transitions, 2015 flow. Second operand 10 states and 133 transitions. [2024-06-28 02:58:10,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 222 transitions, 2985 flow [2024-06-28 02:58:10,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 222 transitions, 2839 flow, removed 29 selfloop flow, removed 8 redundant places. [2024-06-28 02:58:10,138 INFO L231 Difference]: Finished difference. Result has 216 places, 205 transitions, 2242 flow [2024-06-28 02:58:10,138 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1869, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2242, PETRI_PLACES=216, PETRI_TRANSITIONS=205} [2024-06-28 02:58:10,139 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 185 predicate places. [2024-06-28 02:58:10,139 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 205 transitions, 2242 flow [2024-06-28 02:58:10,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:10,139 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:58:10,139 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:58:10,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-28 02:58:10,139 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:58:10,140 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:58:10,140 INFO L85 PathProgramCache]: Analyzing trace with hash 1747874124, now seen corresponding path program 4 times [2024-06-28 02:58:10,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:58:10,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030142385] [2024-06-28 02:58:10,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:58:10,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:58:10,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:58:11,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:58:11,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:58:11,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030142385] [2024-06-28 02:58:11,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030142385] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:58:11,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:58:11,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:58:11,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157833721] [2024-06-28 02:58:11,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:58:11,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:58:11,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:58:11,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:58:11,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:58:11,373 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 02:58:11,373 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 205 transitions, 2242 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:11,373 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:58:11,373 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 02:58:11,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:58:11,772 INFO L124 PetriNetUnfolderBase]: 451/816 cut-off events. [2024-06-28 02:58:11,773 INFO L125 PetriNetUnfolderBase]: For 71150/71150 co-relation queries the response was YES. [2024-06-28 02:58:11,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7175 conditions, 816 events. 451/816 cut-off events. For 71150/71150 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 3897 event pairs, 42 based on Foata normal form. 1/815 useless extension candidates. Maximal degree in co-relation 7072. Up to 632 conditions per place. [2024-06-28 02:58:11,780 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 166 selfloop transitions, 51 changer transitions 0/220 dead transitions. [2024-06-28 02:58:11,780 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 220 transitions, 2778 flow [2024-06-28 02:58:11,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:58:11,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:58:11,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-28 02:58:11,781 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39375 [2024-06-28 02:58:11,781 INFO L175 Difference]: Start difference. First operand has 216 places, 205 transitions, 2242 flow. Second operand 10 states and 126 transitions. [2024-06-28 02:58:11,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 220 transitions, 2778 flow [2024-06-28 02:58:11,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 220 transitions, 2657 flow, removed 40 selfloop flow, removed 5 redundant places. [2024-06-28 02:58:11,939 INFO L231 Difference]: Finished difference. Result has 221 places, 207 transitions, 2302 flow [2024-06-28 02:58:11,939 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2121, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2302, PETRI_PLACES=221, PETRI_TRANSITIONS=207} [2024-06-28 02:58:11,939 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 190 predicate places. [2024-06-28 02:58:11,940 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 207 transitions, 2302 flow [2024-06-28 02:58:11,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:11,940 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:58:11,940 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:58:11,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-28 02:58:11,940 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:58:11,940 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:58:11,941 INFO L85 PathProgramCache]: Analyzing trace with hash 1747882060, now seen corresponding path program 1 times [2024-06-28 02:58:11,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:58:11,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094152160] [2024-06-28 02:58:11,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:58:11,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:58:11,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:58:13,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:58:13,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:58:13,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094152160] [2024-06-28 02:58:13,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094152160] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:58:13,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:58:13,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:58:13,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066939402] [2024-06-28 02:58:13,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:58:13,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:58:13,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:58:13,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:58:13,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:58:13,104 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 02:58:13,105 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 207 transitions, 2302 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:13,105 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:58:13,105 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 02:58:13,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:58:13,402 INFO L124 PetriNetUnfolderBase]: 460/831 cut-off events. [2024-06-28 02:58:13,402 INFO L125 PetriNetUnfolderBase]: For 72137/72137 co-relation queries the response was YES. [2024-06-28 02:58:13,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7177 conditions, 831 events. 460/831 cut-off events. For 72137/72137 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 3972 event pairs, 44 based on Foata normal form. 1/828 useless extension candidates. Maximal degree in co-relation 7073. Up to 750 conditions per place. [2024-06-28 02:58:13,409 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 196 selfloop transitions, 24 changer transitions 0/223 dead transitions. [2024-06-28 02:58:13,409 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 223 transitions, 2853 flow [2024-06-28 02:58:13,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:58:13,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:58:13,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-06-28 02:58:13,410 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-28 02:58:13,410 INFO L175 Difference]: Start difference. First operand has 221 places, 207 transitions, 2302 flow. Second operand 10 states and 120 transitions. [2024-06-28 02:58:13,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 223 transitions, 2853 flow [2024-06-28 02:58:13,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 223 transitions, 2684 flow, removed 33 selfloop flow, removed 8 redundant places. [2024-06-28 02:58:13,563 INFO L231 Difference]: Finished difference. Result has 224 places, 212 transitions, 2278 flow [2024-06-28 02:58:13,563 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2137, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2278, PETRI_PLACES=224, PETRI_TRANSITIONS=212} [2024-06-28 02:58:13,563 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 193 predicate places. [2024-06-28 02:58:13,563 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 212 transitions, 2278 flow [2024-06-28 02:58:13,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:13,563 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:58:13,563 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:58:13,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-28 02:58:13,564 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:58:13,564 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:58:13,564 INFO L85 PathProgramCache]: Analyzing trace with hash 1747881781, now seen corresponding path program 4 times [2024-06-28 02:58:13,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:58:13,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67166224] [2024-06-28 02:58:13,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:58:13,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:58:13,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:58:14,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:58:14,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:58:14,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67166224] [2024-06-28 02:58:14,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67166224] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:58:14,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:58:14,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:58:14,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554215712] [2024-06-28 02:58:14,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:58:14,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:58:14,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:58:14,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:58:14,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:58:14,465 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 02:58:14,466 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 212 transitions, 2278 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:14,466 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:58:14,466 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 02:58:14,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:58:14,817 INFO L124 PetriNetUnfolderBase]: 457/827 cut-off events. [2024-06-28 02:58:14,817 INFO L125 PetriNetUnfolderBase]: For 71098/71098 co-relation queries the response was YES. [2024-06-28 02:58:14,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6933 conditions, 827 events. 457/827 cut-off events. For 71098/71098 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 3973 event pairs, 39 based on Foata normal form. 2/827 useless extension candidates. Maximal degree in co-relation 6827. Up to 593 conditions per place. [2024-06-28 02:58:14,823 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 161 selfloop transitions, 64 changer transitions 0/228 dead transitions. [2024-06-28 02:58:14,823 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 228 transitions, 2922 flow [2024-06-28 02:58:14,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:58:14,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:58:14,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 131 transitions. [2024-06-28 02:58:14,824 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.409375 [2024-06-28 02:58:14,824 INFO L175 Difference]: Start difference. First operand has 224 places, 212 transitions, 2278 flow. Second operand 10 states and 131 transitions. [2024-06-28 02:58:14,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 228 transitions, 2922 flow [2024-06-28 02:58:14,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 228 transitions, 2837 flow, removed 22 selfloop flow, removed 7 redundant places. [2024-06-28 02:58:14,966 INFO L231 Difference]: Finished difference. Result has 227 places, 212 transitions, 2329 flow [2024-06-28 02:58:14,966 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2193, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2329, PETRI_PLACES=227, PETRI_TRANSITIONS=212} [2024-06-28 02:58:14,966 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 196 predicate places. [2024-06-28 02:58:14,966 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 212 transitions, 2329 flow [2024-06-28 02:58:14,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:14,966 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:58:14,966 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:58:14,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-28 02:58:14,966 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:58:14,967 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:58:14,967 INFO L85 PathProgramCache]: Analyzing trace with hash -1763806781, now seen corresponding path program 5 times [2024-06-28 02:58:14,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:58:14,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458091715] [2024-06-28 02:58:14,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:58:14,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:58:14,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:58:15,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:58:15,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:58:15,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458091715] [2024-06-28 02:58:15,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458091715] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:58:15,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:58:15,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:58:15,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234543836] [2024-06-28 02:58:15,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:58:15,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:58:15,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:58:15,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:58:15,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:58:15,889 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 02:58:15,889 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 212 transitions, 2329 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:15,889 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:58:15,889 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 02:58:15,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:58:16,224 INFO L124 PetriNetUnfolderBase]: 463/837 cut-off events. [2024-06-28 02:58:16,224 INFO L125 PetriNetUnfolderBase]: For 74454/74454 co-relation queries the response was YES. [2024-06-28 02:58:16,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7121 conditions, 837 events. 463/837 cut-off events. For 74454/74454 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 4019 event pairs, 43 based on Foata normal form. 2/837 useless extension candidates. Maximal degree in co-relation 7014. Up to 660 conditions per place. [2024-06-28 02:58:16,232 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 172 selfloop transitions, 52 changer transitions 0/227 dead transitions. [2024-06-28 02:58:16,233 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 227 transitions, 2903 flow [2024-06-28 02:58:16,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:58:16,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:58:16,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-28 02:58:16,234 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39375 [2024-06-28 02:58:16,234 INFO L175 Difference]: Start difference. First operand has 227 places, 212 transitions, 2329 flow. Second operand 10 states and 126 transitions. [2024-06-28 02:58:16,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 227 transitions, 2903 flow [2024-06-28 02:58:16,387 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 227 transitions, 2789 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-28 02:58:16,390 INFO L231 Difference]: Finished difference. Result has 229 places, 215 transitions, 2405 flow [2024-06-28 02:58:16,390 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2215, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2405, PETRI_PLACES=229, PETRI_TRANSITIONS=215} [2024-06-28 02:58:16,390 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 198 predicate places. [2024-06-28 02:58:16,390 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 215 transitions, 2405 flow [2024-06-28 02:58:16,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:16,391 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:58:16,391 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:58:16,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-28 02:58:16,391 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:58:16,391 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:58:16,391 INFO L85 PathProgramCache]: Analyzing trace with hash -1401878412, now seen corresponding path program 5 times [2024-06-28 02:58:16,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:58:16,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795910944] [2024-06-28 02:58:16,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:58:16,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:58:16,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:58:17,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:58:17,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:58:17,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795910944] [2024-06-28 02:58:17,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795910944] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:58:17,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:58:17,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:58:17,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325611709] [2024-06-28 02:58:17,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:58:17,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:58:17,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:58:17,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:58:17,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:58:17,432 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 02:58:17,433 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 215 transitions, 2405 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:17,433 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:58:17,433 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 02:58:17,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:58:17,797 INFO L124 PetriNetUnfolderBase]: 466/844 cut-off events. [2024-06-28 02:58:17,797 INFO L125 PetriNetUnfolderBase]: For 75031/75031 co-relation queries the response was YES. [2024-06-28 02:58:17,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7262 conditions, 844 events. 466/844 cut-off events. For 75031/75031 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 4079 event pairs, 43 based on Foata normal form. 1/843 useless extension candidates. Maximal degree in co-relation 7154. Up to 668 conditions per place. [2024-06-28 02:58:17,805 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 175 selfloop transitions, 51 changer transitions 0/229 dead transitions. [2024-06-28 02:58:17,805 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 229 transitions, 2987 flow [2024-06-28 02:58:17,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:58:17,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:58:17,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2024-06-28 02:58:17,806 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-28 02:58:17,806 INFO L175 Difference]: Start difference. First operand has 229 places, 215 transitions, 2405 flow. Second operand 10 states and 125 transitions. [2024-06-28 02:58:17,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 229 transitions, 2987 flow [2024-06-28 02:58:17,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 229 transitions, 2819 flow, removed 34 selfloop flow, removed 8 redundant places. [2024-06-28 02:58:17,970 INFO L231 Difference]: Finished difference. Result has 231 places, 217 transitions, 2424 flow [2024-06-28 02:58:17,970 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2237, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2424, PETRI_PLACES=231, PETRI_TRANSITIONS=217} [2024-06-28 02:58:17,971 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 200 predicate places. [2024-06-28 02:58:17,971 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 217 transitions, 2424 flow [2024-06-28 02:58:17,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:17,971 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:58:17,971 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:58:17,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-28 02:58:17,971 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:58:17,971 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:58:17,971 INFO L85 PathProgramCache]: Analyzing trace with hash -1763605188, now seen corresponding path program 6 times [2024-06-28 02:58:17,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:58:17,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029276512] [2024-06-28 02:58:17,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:58:17,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:58:17,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:58:18,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:58:18,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:58:18,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029276512] [2024-06-28 02:58:18,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029276512] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:58:18,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:58:18,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:58:18,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486598835] [2024-06-28 02:58:18,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:58:18,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:58:18,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:58:18,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:58:18,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:58:19,007 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 02:58:19,007 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 217 transitions, 2424 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:19,007 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:58:19,007 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 02:58:19,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:58:19,371 INFO L124 PetriNetUnfolderBase]: 469/851 cut-off events. [2024-06-28 02:58:19,371 INFO L125 PetriNetUnfolderBase]: For 77985/77985 co-relation queries the response was YES. [2024-06-28 02:58:19,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7329 conditions, 851 events. 469/851 cut-off events. For 77985/77985 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 4128 event pairs, 43 based on Foata normal form. 1/850 useless extension candidates. Maximal degree in co-relation 7220. Up to 662 conditions per place. [2024-06-28 02:58:19,379 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 174 selfloop transitions, 54 changer transitions 0/231 dead transitions. [2024-06-28 02:58:19,379 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 231 transitions, 3014 flow [2024-06-28 02:58:19,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:58:19,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:58:19,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-28 02:58:19,380 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.396875 [2024-06-28 02:58:19,380 INFO L175 Difference]: Start difference. First operand has 231 places, 217 transitions, 2424 flow. Second operand 10 states and 127 transitions. [2024-06-28 02:58:19,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 231 transitions, 3014 flow [2024-06-28 02:58:19,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 231 transitions, 2843 flow, removed 36 selfloop flow, removed 8 redundant places. [2024-06-28 02:58:19,537 INFO L231 Difference]: Finished difference. Result has 233 places, 219 transitions, 2450 flow [2024-06-28 02:58:19,538 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2253, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2450, PETRI_PLACES=233, PETRI_TRANSITIONS=219} [2024-06-28 02:58:19,538 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 202 predicate places. [2024-06-28 02:58:19,538 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 219 transitions, 2450 flow [2024-06-28 02:58:19,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:19,538 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:58:19,538 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:58:19,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-28 02:58:19,538 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:58:19,538 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:58:19,538 INFO L85 PathProgramCache]: Analyzing trace with hash -1082296235, now seen corresponding path program 6 times [2024-06-28 02:58:19,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:58:19,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171761675] [2024-06-28 02:58:19,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:58:19,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:58:19,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:58:20,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:58:20,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:58:20,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171761675] [2024-06-28 02:58:20,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171761675] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:58:20,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:58:20,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:58:20,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170581037] [2024-06-28 02:58:20,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:58:20,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:58:20,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:58:20,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:58:20,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:58:20,554 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 02:58:20,554 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 219 transitions, 2450 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:20,555 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:58:20,555 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 02:58:20,555 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:58:20,901 INFO L124 PetriNetUnfolderBase]: 495/893 cut-off events. [2024-06-28 02:58:20,902 INFO L125 PetriNetUnfolderBase]: For 92126/92126 co-relation queries the response was YES. [2024-06-28 02:58:20,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8037 conditions, 893 events. 495/893 cut-off events. For 92126/92126 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 4352 event pairs, 44 based on Foata normal form. 2/893 useless extension candidates. Maximal degree in co-relation 7927. Up to 671 conditions per place. [2024-06-28 02:58:20,911 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 178 selfloop transitions, 61 changer transitions 0/242 dead transitions. [2024-06-28 02:58:20,911 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 242 transitions, 3476 flow [2024-06-28 02:58:20,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:58:20,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:58:20,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 134 transitions. [2024-06-28 02:58:20,912 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41875 [2024-06-28 02:58:20,912 INFO L175 Difference]: Start difference. First operand has 233 places, 219 transitions, 2450 flow. Second operand 10 states and 134 transitions. [2024-06-28 02:58:20,912 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 242 transitions, 3476 flow [2024-06-28 02:58:21,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 242 transitions, 3295 flow, removed 38 selfloop flow, removed 8 redundant places. [2024-06-28 02:58:21,096 INFO L231 Difference]: Finished difference. Result has 236 places, 227 transitions, 2625 flow [2024-06-28 02:58:21,097 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2269, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2625, PETRI_PLACES=236, PETRI_TRANSITIONS=227} [2024-06-28 02:58:21,097 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 205 predicate places. [2024-06-28 02:58:21,097 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 227 transitions, 2625 flow [2024-06-28 02:58:21,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:21,097 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:58:21,097 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:58:21,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-28 02:58:21,098 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:58:21,098 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:58:21,098 INFO L85 PathProgramCache]: Analyzing trace with hash -1487446991, now seen corresponding path program 1 times [2024-06-28 02:58:21,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:58:21,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360086395] [2024-06-28 02:58:21,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:58:21,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:58:21,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:58:22,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:58:22,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:58:22,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360086395] [2024-06-28 02:58:22,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360086395] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:58:22,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:58:22,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:58:22,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738165397] [2024-06-28 02:58:22,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:58:22,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:58:22,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:58:22,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:58:22,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:58:22,534 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 02:58:22,534 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 227 transitions, 2625 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:22,534 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:58:22,535 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 02:58:22,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:58:22,847 INFO L124 PetriNetUnfolderBase]: 475/874 cut-off events. [2024-06-28 02:58:22,847 INFO L125 PetriNetUnfolderBase]: For 96329/96330 co-relation queries the response was YES. [2024-06-28 02:58:22,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7971 conditions, 874 events. 475/874 cut-off events. For 96329/96330 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 4376 event pairs, 45 based on Foata normal form. 3/871 useless extension candidates. Maximal degree in co-relation 7859. Up to 716 conditions per place. [2024-06-28 02:58:22,855 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 182 selfloop transitions, 21 changer transitions 0/242 dead transitions. [2024-06-28 02:58:22,855 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 242 transitions, 3101 flow [2024-06-28 02:58:22,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:58:22,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:58:22,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-28 02:58:22,856 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.396875 [2024-06-28 02:58:22,856 INFO L175 Difference]: Start difference. First operand has 236 places, 227 transitions, 2625 flow. Second operand 10 states and 127 transitions. [2024-06-28 02:58:22,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 242 transitions, 3101 flow [2024-06-28 02:58:23,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 242 transitions, 2959 flow, removed 46 selfloop flow, removed 4 redundant places. [2024-06-28 02:58:23,022 INFO L231 Difference]: Finished difference. Result has 243 places, 230 transitions, 2578 flow [2024-06-28 02:58:23,023 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2483, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2578, PETRI_PLACES=243, PETRI_TRANSITIONS=230} [2024-06-28 02:58:23,023 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 212 predicate places. [2024-06-28 02:58:23,023 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 230 transitions, 2578 flow [2024-06-28 02:58:23,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:23,023 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:58:23,023 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:58:23,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-28 02:58:23,023 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:58:23,024 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:58:23,024 INFO L85 PathProgramCache]: Analyzing trace with hash -1074879485, now seen corresponding path program 7 times [2024-06-28 02:58:23,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:58:23,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130174530] [2024-06-28 02:58:23,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:58:23,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:58:23,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:58:23,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:58:23,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:58:23,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130174530] [2024-06-28 02:58:23,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130174530] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:58:23,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:58:23,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:58:23,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080451575] [2024-06-28 02:58:23,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:58:23,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:58:23,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:58:23,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:58:23,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:58:23,976 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 02:58:23,977 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 230 transitions, 2578 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:23,977 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:58:23,977 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 02:58:23,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:58:24,265 INFO L124 PetriNetUnfolderBase]: 515/927 cut-off events. [2024-06-28 02:58:24,265 INFO L125 PetriNetUnfolderBase]: For 101204/101204 co-relation queries the response was YES. [2024-06-28 02:58:24,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8488 conditions, 927 events. 515/927 cut-off events. For 101204/101204 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 4556 event pairs, 42 based on Foata normal form. 2/927 useless extension candidates. Maximal degree in co-relation 8373. Up to 556 conditions per place. [2024-06-28 02:58:24,274 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 150 selfloop transitions, 96 changer transitions 0/249 dead transitions. [2024-06-28 02:58:24,274 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 249 transitions, 3389 flow [2024-06-28 02:58:24,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:58:24,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:58:24,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 133 transitions. [2024-06-28 02:58:24,275 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.415625 [2024-06-28 02:58:24,275 INFO L175 Difference]: Start difference. First operand has 243 places, 230 transitions, 2578 flow. Second operand 10 states and 133 transitions. [2024-06-28 02:58:24,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 249 transitions, 3389 flow [2024-06-28 02:58:24,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 249 transitions, 3325 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-28 02:58:24,458 INFO L231 Difference]: Finished difference. Result has 246 places, 234 transitions, 2816 flow [2024-06-28 02:58:24,459 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2514, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2816, PETRI_PLACES=246, PETRI_TRANSITIONS=234} [2024-06-28 02:58:24,459 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 215 predicate places. [2024-06-28 02:58:24,459 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 234 transitions, 2816 flow [2024-06-28 02:58:24,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:24,459 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:58:24,459 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:58:24,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-28 02:58:24,459 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:58:24,460 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:58:24,460 INFO L85 PathProgramCache]: Analyzing trace with hash -1494866221, now seen corresponding path program 8 times [2024-06-28 02:58:24,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:58:24,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102589278] [2024-06-28 02:58:24,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:58:24,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:58:24,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:58:25,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:58:25,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:58:25,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102589278] [2024-06-28 02:58:25,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102589278] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:58:25,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:58:25,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:58:25,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665187036] [2024-06-28 02:58:25,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:58:25,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:58:25,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:58:25,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:58:25,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:58:25,407 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 02:58:25,407 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 234 transitions, 2816 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:25,407 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:58:25,407 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 02:58:25,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:58:25,744 INFO L124 PetriNetUnfolderBase]: 513/924 cut-off events. [2024-06-28 02:58:25,744 INFO L125 PetriNetUnfolderBase]: For 99888/99888 co-relation queries the response was YES. [2024-06-28 02:58:25,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8627 conditions, 924 events. 513/924 cut-off events. For 99888/99888 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 4532 event pairs, 42 based on Foata normal form. 1/923 useless extension candidates. Maximal degree in co-relation 8511. Up to 726 conditions per place. [2024-06-28 02:58:25,752 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 187 selfloop transitions, 59 changer transitions 0/249 dead transitions. [2024-06-28 02:58:25,752 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 249 transitions, 3407 flow [2024-06-28 02:58:25,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:58:25,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:58:25,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 129 transitions. [2024-06-28 02:58:25,753 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.403125 [2024-06-28 02:58:25,753 INFO L175 Difference]: Start difference. First operand has 246 places, 234 transitions, 2816 flow. Second operand 10 states and 129 transitions. [2024-06-28 02:58:25,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 249 transitions, 3407 flow [2024-06-28 02:58:25,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 249 transitions, 3263 flow, removed 25 selfloop flow, removed 6 redundant places. [2024-06-28 02:58:25,924 INFO L231 Difference]: Finished difference. Result has 251 places, 238 transitions, 2884 flow [2024-06-28 02:58:25,924 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2672, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2884, PETRI_PLACES=251, PETRI_TRANSITIONS=238} [2024-06-28 02:58:25,925 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 220 predicate places. [2024-06-28 02:58:25,925 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 238 transitions, 2884 flow [2024-06-28 02:58:25,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:25,925 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:58:25,925 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:58:25,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-28 02:58:25,925 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:58:25,926 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:58:25,926 INFO L85 PathProgramCache]: Analyzing trace with hash -1763597252, now seen corresponding path program 2 times [2024-06-28 02:58:25,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:58:25,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028850781] [2024-06-28 02:58:25,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:58:25,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:58:25,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:58:27,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:58:27,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:58:27,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028850781] [2024-06-28 02:58:27,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028850781] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:58:27,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:58:27,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:58:27,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209855334] [2024-06-28 02:58:27,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:58:27,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:58:27,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:58:27,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:58:27,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:58:27,340 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 02:58:27,340 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 238 transitions, 2884 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:27,340 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:58:27,340 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 02:58:27,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:58:27,648 INFO L124 PetriNetUnfolderBase]: 511/921 cut-off events. [2024-06-28 02:58:27,648 INFO L125 PetriNetUnfolderBase]: For 98762/98762 co-relation queries the response was YES. [2024-06-28 02:58:27,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8553 conditions, 921 events. 511/921 cut-off events. For 98762/98762 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 4526 event pairs, 40 based on Foata normal form. 1/920 useless extension candidates. Maximal degree in co-relation 8434. Up to 816 conditions per place. [2024-06-28 02:58:27,656 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 212 selfloop transitions, 34 changer transitions 0/249 dead transitions. [2024-06-28 02:58:27,656 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 249 transitions, 3402 flow [2024-06-28 02:58:27,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:58:27,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:58:27,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-06-28 02:58:27,657 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-28 02:58:27,657 INFO L175 Difference]: Start difference. First operand has 251 places, 238 transitions, 2884 flow. Second operand 10 states and 120 transitions. [2024-06-28 02:58:27,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 249 transitions, 3402 flow [2024-06-28 02:58:27,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 249 transitions, 3286 flow, removed 24 selfloop flow, removed 6 redundant places. [2024-06-28 02:58:27,852 INFO L231 Difference]: Finished difference. Result has 255 places, 238 transitions, 2841 flow [2024-06-28 02:58:27,852 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2768, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2841, PETRI_PLACES=255, PETRI_TRANSITIONS=238} [2024-06-28 02:58:27,852 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 224 predicate places. [2024-06-28 02:58:27,852 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 238 transitions, 2841 flow [2024-06-28 02:58:27,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:27,853 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:58:27,853 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:58:27,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-28 02:58:27,853 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:58:27,853 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:58:27,853 INFO L85 PathProgramCache]: Analyzing trace with hash -1756447691, now seen corresponding path program 9 times [2024-06-28 02:58:27,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:58:27,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120531423] [2024-06-28 02:58:27,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:58:27,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:58:27,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:58:28,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:58:28,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:58:28,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120531423] [2024-06-28 02:58:28,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120531423] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:58:28,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:58:28,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:58:28,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42358277] [2024-06-28 02:58:28,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:58:28,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:58:28,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:58:28,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:58:28,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:58:28,794 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 02:58:28,798 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 238 transitions, 2841 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:28,798 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:58:28,798 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 02:58:28,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:58:29,113 INFO L124 PetriNetUnfolderBase]: 517/931 cut-off events. [2024-06-28 02:58:29,113 INFO L125 PetriNetUnfolderBase]: For 103780/103780 co-relation queries the response was YES. [2024-06-28 02:58:29,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8686 conditions, 931 events. 517/931 cut-off events. For 103780/103780 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 4572 event pairs, 42 based on Foata normal form. 2/931 useless extension candidates. Maximal degree in co-relation 8565. Up to 560 conditions per place. [2024-06-28 02:58:29,122 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 163 selfloop transitions, 92 changer transitions 0/258 dead transitions. [2024-06-28 02:58:29,122 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 258 transitions, 3820 flow [2024-06-28 02:58:29,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:58:29,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:58:29,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 136 transitions. [2024-06-28 02:58:29,123 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.425 [2024-06-28 02:58:29,123 INFO L175 Difference]: Start difference. First operand has 255 places, 238 transitions, 2841 flow. Second operand 10 states and 136 transitions. [2024-06-28 02:58:29,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 258 transitions, 3820 flow [2024-06-28 02:58:29,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 258 transitions, 3729 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-28 02:58:29,333 INFO L231 Difference]: Finished difference. Result has 257 places, 240 transitions, 2992 flow [2024-06-28 02:58:29,333 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2750, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2992, PETRI_PLACES=257, PETRI_TRANSITIONS=240} [2024-06-28 02:58:29,333 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 226 predicate places. [2024-06-28 02:58:29,334 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 240 transitions, 2992 flow [2024-06-28 02:58:29,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:29,334 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:58:29,334 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:58:29,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-28 02:58:29,334 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:58:29,334 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:58:29,334 INFO L85 PathProgramCache]: Analyzing trace with hash -1756455348, now seen corresponding path program 7 times [2024-06-28 02:58:29,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:58:29,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248395028] [2024-06-28 02:58:29,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:58:29,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:58:29,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:58:30,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:58:30,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:58:30,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248395028] [2024-06-28 02:58:30,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248395028] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:58:30,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:58:30,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:58:30,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418329858] [2024-06-28 02:58:30,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:58:30,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:58:30,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:58:30,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:58:30,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:58:30,336 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 02:58:30,336 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 240 transitions, 2992 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:30,336 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:58:30,336 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 02:58:30,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:58:30,697 INFO L124 PetriNetUnfolderBase]: 520/938 cut-off events. [2024-06-28 02:58:30,697 INFO L125 PetriNetUnfolderBase]: For 105655/105655 co-relation queries the response was YES. [2024-06-28 02:58:30,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8960 conditions, 938 events. 520/938 cut-off events. For 105655/105655 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 4643 event pairs, 43 based on Foata normal form. 1/937 useless extension candidates. Maximal degree in co-relation 8838. Up to 683 conditions per place. [2024-06-28 02:58:30,707 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 179 selfloop transitions, 71 changer transitions 0/253 dead transitions. [2024-06-28 02:58:30,707 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 253 transitions, 3604 flow [2024-06-28 02:58:30,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:58:30,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:58:30,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-28 02:58:30,708 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39375 [2024-06-28 02:58:30,708 INFO L175 Difference]: Start difference. First operand has 257 places, 240 transitions, 2992 flow. Second operand 10 states and 126 transitions. [2024-06-28 02:58:30,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 253 transitions, 3604 flow [2024-06-28 02:58:30,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 253 transitions, 3309 flow, removed 24 selfloop flow, removed 9 redundant places. [2024-06-28 02:58:30,957 INFO L231 Difference]: Finished difference. Result has 258 places, 242 transitions, 2934 flow [2024-06-28 02:58:30,958 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2697, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2934, PETRI_PLACES=258, PETRI_TRANSITIONS=242} [2024-06-28 02:58:30,958 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 227 predicate places. [2024-06-28 02:58:30,958 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 242 transitions, 2934 flow [2024-06-28 02:58:30,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:30,958 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:58:30,958 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:58:30,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-28 02:58:30,958 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:58:30,959 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:58:30,959 INFO L85 PathProgramCache]: Analyzing trace with hash -1756455131, now seen corresponding path program 10 times [2024-06-28 02:58:30,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:58:30,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322878479] [2024-06-28 02:58:30,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:58:30,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:58:30,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:58:31,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:58:31,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:58:31,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322878479] [2024-06-28 02:58:31,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322878479] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:58:31,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:58:31,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:58:31,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483063332] [2024-06-28 02:58:31,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:58:31,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:58:31,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:58:31,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:58:31,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:58:31,902 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 02:58:31,902 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 242 transitions, 2934 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:31,902 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:58:31,902 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 02:58:31,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:58:32,303 INFO L124 PetriNetUnfolderBase]: 516/932 cut-off events. [2024-06-28 02:58:32,303 INFO L125 PetriNetUnfolderBase]: For 103882/103882 co-relation queries the response was YES. [2024-06-28 02:58:32,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8494 conditions, 932 events. 516/932 cut-off events. For 103882/103882 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 4597 event pairs, 41 based on Foata normal form. 2/932 useless extension candidates. Maximal degree in co-relation 8373. Up to 562 conditions per place. [2024-06-28 02:58:32,311 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 160 selfloop transitions, 94 changer transitions 0/257 dead transitions. [2024-06-28 02:58:32,311 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 257 transitions, 3678 flow [2024-06-28 02:58:32,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:58:32,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:58:32,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 134 transitions. [2024-06-28 02:58:32,312 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41875 [2024-06-28 02:58:32,312 INFO L175 Difference]: Start difference. First operand has 258 places, 242 transitions, 2934 flow. Second operand 10 states and 134 transitions. [2024-06-28 02:58:32,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 257 transitions, 3678 flow [2024-06-28 02:58:32,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 257 transitions, 3431 flow, removed 54 selfloop flow, removed 8 redundant places. [2024-06-28 02:58:32,581 INFO L231 Difference]: Finished difference. Result has 260 places, 242 transitions, 2880 flow [2024-06-28 02:58:32,581 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2687, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2880, PETRI_PLACES=260, PETRI_TRANSITIONS=242} [2024-06-28 02:58:32,581 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 229 predicate places. [2024-06-28 02:58:32,581 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 242 transitions, 2880 flow [2024-06-28 02:58:32,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:32,581 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:58:32,581 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:58:32,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-28 02:58:32,582 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:58:32,582 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:58:32,582 INFO L85 PathProgramCache]: Analyzing trace with hash -1012728500, now seen corresponding path program 3 times [2024-06-28 02:58:32,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:58:32,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341077084] [2024-06-28 02:58:32,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:58:32,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:58:32,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:58:33,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:58:33,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:58:33,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341077084] [2024-06-28 02:58:33,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341077084] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:58:33,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:58:33,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:58:33,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655083860] [2024-06-28 02:58:33,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:58:33,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:58:33,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:58:33,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:58:33,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:58:33,942 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 02:58:33,942 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 242 transitions, 2880 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:33,943 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:58:33,943 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 02:58:33,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:58:34,305 INFO L124 PetriNetUnfolderBase]: 524/945 cut-off events. [2024-06-28 02:58:34,305 INFO L125 PetriNetUnfolderBase]: For 106682/106682 co-relation queries the response was YES. [2024-06-28 02:58:34,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8697 conditions, 945 events. 524/945 cut-off events. For 106682/106682 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 4691 event pairs, 45 based on Foata normal form. 1/942 useless extension candidates. Maximal degree in co-relation 8575. Up to 804 conditions per place. [2024-06-28 02:58:34,314 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 207 selfloop transitions, 46 changer transitions 0/256 dead transitions. [2024-06-28 02:58:34,314 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 256 transitions, 3664 flow [2024-06-28 02:58:34,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:58:34,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:58:34,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-28 02:58:34,315 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39375 [2024-06-28 02:58:34,315 INFO L175 Difference]: Start difference. First operand has 260 places, 242 transitions, 2880 flow. Second operand 10 states and 126 transitions. [2024-06-28 02:58:34,315 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 256 transitions, 3664 flow [2024-06-28 02:58:34,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 256 transitions, 3470 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-28 02:58:34,618 INFO L231 Difference]: Finished difference. Result has 261 places, 246 transitions, 2887 flow [2024-06-28 02:58:34,618 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2686, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2887, PETRI_PLACES=261, PETRI_TRANSITIONS=246} [2024-06-28 02:58:34,619 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 230 predicate places. [2024-06-28 02:58:34,619 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 246 transitions, 2887 flow [2024-06-28 02:58:34,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:34,619 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:58:34,619 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:58:34,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-28 02:58:34,619 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:58:34,620 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:58:34,620 INFO L85 PathProgramCache]: Analyzing trace with hash -1012728779, now seen corresponding path program 11 times [2024-06-28 02:58:34,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:58:34,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140332305] [2024-06-28 02:58:34,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:58:34,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:58:34,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:58:35,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:58:35,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:58:35,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140332305] [2024-06-28 02:58:35,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140332305] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:58:35,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:58:35,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:58:35,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024350838] [2024-06-28 02:58:35,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:58:35,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:58:35,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:58:35,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:58:35,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:58:35,668 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 02:58:35,668 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 246 transitions, 2887 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:35,668 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:58:35,668 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 02:58:35,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:58:35,970 INFO L124 PetriNetUnfolderBase]: 547/982 cut-off events. [2024-06-28 02:58:35,970 INFO L125 PetriNetUnfolderBase]: For 122523/122523 co-relation queries the response was YES. [2024-06-28 02:58:35,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9324 conditions, 982 events. 547/982 cut-off events. For 122523/122523 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 4900 event pairs, 51 based on Foata normal form. 1/978 useless extension candidates. Maximal degree in co-relation 9201. Up to 744 conditions per place. [2024-06-28 02:58:35,979 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 198 selfloop transitions, 67 changer transitions 0/268 dead transitions. [2024-06-28 02:58:35,979 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 268 transitions, 4173 flow [2024-06-28 02:58:35,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:58:35,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:58:35,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 135 transitions. [2024-06-28 02:58:35,980 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.421875 [2024-06-28 02:58:35,980 INFO L175 Difference]: Start difference. First operand has 261 places, 246 transitions, 2887 flow. Second operand 10 states and 135 transitions. [2024-06-28 02:58:35,980 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 268 transitions, 4173 flow [2024-06-28 02:58:36,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 268 transitions, 4065 flow, removed 29 selfloop flow, removed 6 redundant places. [2024-06-28 02:58:36,319 INFO L231 Difference]: Finished difference. Result has 266 places, 256 transitions, 3194 flow [2024-06-28 02:58:36,319 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2779, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3194, PETRI_PLACES=266, PETRI_TRANSITIONS=256} [2024-06-28 02:58:36,319 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 235 predicate places. [2024-06-28 02:58:36,319 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 256 transitions, 3194 flow [2024-06-28 02:58:36,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:36,319 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:58:36,319 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:58:36,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-28 02:58:36,320 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:58:36,320 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:58:36,320 INFO L85 PathProgramCache]: Analyzing trace with hash -764567122, now seen corresponding path program 4 times [2024-06-28 02:58:36,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:58:36,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132559697] [2024-06-28 02:58:36,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:58:36,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:58:36,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:58:37,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:58:37,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:58:37,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132559697] [2024-06-28 02:58:37,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132559697] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:58:37,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:58:37,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:58:37,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603838026] [2024-06-28 02:58:37,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:58:37,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:58:37,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:58:37,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:58:37,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:58:37,452 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 02:58:37,453 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 256 transitions, 3194 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:37,453 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:58:37,453 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 02:58:37,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:58:37,706 INFO L124 PetriNetUnfolderBase]: 550/987 cut-off events. [2024-06-28 02:58:37,706 INFO L125 PetriNetUnfolderBase]: For 126443/126443 co-relation queries the response was YES. [2024-06-28 02:58:37,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9585 conditions, 987 events. 550/987 cut-off events. For 126443/126443 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 4935 event pairs, 45 based on Foata normal form. 1/984 useless extension candidates. Maximal degree in co-relation 9459. Up to 792 conditions per place. [2024-06-28 02:58:37,715 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 197 selfloop transitions, 67 changer transitions 0/267 dead transitions. [2024-06-28 02:58:37,715 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 267 transitions, 3796 flow [2024-06-28 02:58:37,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:58:37,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:58:37,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-28 02:58:37,715 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3875 [2024-06-28 02:58:37,715 INFO L175 Difference]: Start difference. First operand has 266 places, 256 transitions, 3194 flow. Second operand 10 states and 124 transitions. [2024-06-28 02:58:37,715 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 267 transitions, 3796 flow [2024-06-28 02:58:38,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 267 transitions, 3653 flow, removed 45 selfloop flow, removed 3 redundant places. [2024-06-28 02:58:38,030 INFO L231 Difference]: Finished difference. Result has 273 places, 258 transitions, 3248 flow [2024-06-28 02:58:38,031 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3051, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3248, PETRI_PLACES=273, PETRI_TRANSITIONS=258} [2024-06-28 02:58:38,031 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 242 predicate places. [2024-06-28 02:58:38,031 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 258 transitions, 3248 flow [2024-06-28 02:58:38,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:38,031 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:58:38,031 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:58:38,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-28 02:58:38,032 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:58:38,032 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:58:38,032 INFO L85 PathProgramCache]: Analyzing trace with hash -1012736436, now seen corresponding path program 8 times [2024-06-28 02:58:38,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:58:38,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632531984] [2024-06-28 02:58:38,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:58:38,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:58:38,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:58:39,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:58:39,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:58:39,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632531984] [2024-06-28 02:58:39,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632531984] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:58:39,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:58:39,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:58:39,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810038912] [2024-06-28 02:58:39,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:58:39,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:58:39,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:58:39,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:58:39,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:58:39,170 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 02:58:39,170 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 258 transitions, 3248 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:39,170 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:58:39,170 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 02:58:39,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:58:39,532 INFO L124 PetriNetUnfolderBase]: 558/1004 cut-off events. [2024-06-28 02:58:39,532 INFO L125 PetriNetUnfolderBase]: For 134348/134348 co-relation queries the response was YES. [2024-06-28 02:58:39,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9998 conditions, 1004 events. 558/1004 cut-off events. For 134348/134348 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 5075 event pairs, 50 based on Foata normal form. 1/1000 useless extension candidates. Maximal degree in co-relation 9870. Up to 788 conditions per place. [2024-06-28 02:58:39,542 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 209 selfloop transitions, 60 changer transitions 0/272 dead transitions. [2024-06-28 02:58:39,542 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 272 transitions, 4154 flow [2024-06-28 02:58:39,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:58:39,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:58:39,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 129 transitions. [2024-06-28 02:58:39,542 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.403125 [2024-06-28 02:58:39,542 INFO L175 Difference]: Start difference. First operand has 273 places, 258 transitions, 3248 flow. Second operand 10 states and 129 transitions. [2024-06-28 02:58:39,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 272 transitions, 4154 flow [2024-06-28 02:58:39,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 272 transitions, 3973 flow, removed 25 selfloop flow, removed 8 redundant places. [2024-06-28 02:58:39,888 INFO L231 Difference]: Finished difference. Result has 275 places, 262 transitions, 3380 flow [2024-06-28 02:58:39,889 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3067, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3380, PETRI_PLACES=275, PETRI_TRANSITIONS=262} [2024-06-28 02:58:39,889 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 244 predicate places. [2024-06-28 02:58:39,889 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 262 transitions, 3380 flow [2024-06-28 02:58:39,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:39,889 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:58:39,889 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:58:39,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-28 02:58:39,889 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:58:39,890 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:58:39,890 INFO L85 PathProgramCache]: Analyzing trace with hash 867272643, now seen corresponding path program 2 times [2024-06-28 02:58:39,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:58:39,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466922441] [2024-06-28 02:58:39,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:58:39,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:58:39,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:58:41,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:58:41,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:58:41,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466922441] [2024-06-28 02:58:41,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466922441] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:58:41,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:58:41,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:58:41,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944471034] [2024-06-28 02:58:41,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:58:41,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:58:41,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:58:41,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:58:41,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:58:41,451 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 02:58:41,451 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 262 transitions, 3380 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:41,451 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:58:41,451 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 02:58:41,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:58:41,848 INFO L124 PetriNetUnfolderBase]: 535/983 cut-off events. [2024-06-28 02:58:41,848 INFO L125 PetriNetUnfolderBase]: For 142767/142768 co-relation queries the response was YES. [2024-06-28 02:58:41,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9871 conditions, 983 events. 535/983 cut-off events. For 142767/142768 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 5096 event pairs, 52 based on Foata normal form. 3/978 useless extension candidates. Maximal degree in co-relation 9742. Up to 827 conditions per place. [2024-06-28 02:58:41,857 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 217 selfloop transitions, 16 changer transitions 0/275 dead transitions. [2024-06-28 02:58:41,857 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 275 transitions, 3904 flow [2024-06-28 02:58:41,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:58:41,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:58:41,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-28 02:58:41,865 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3875 [2024-06-28 02:58:41,865 INFO L175 Difference]: Start difference. First operand has 275 places, 262 transitions, 3380 flow. Second operand 10 states and 124 transitions. [2024-06-28 02:58:41,865 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 275 transitions, 3904 flow [2024-06-28 02:58:42,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 275 transitions, 3742 flow, removed 49 selfloop flow, removed 6 redundant places. [2024-06-28 02:58:42,191 INFO L231 Difference]: Finished difference. Result has 280 places, 265 transitions, 3299 flow [2024-06-28 02:58:42,191 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3218, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3299, PETRI_PLACES=280, PETRI_TRANSITIONS=265} [2024-06-28 02:58:42,191 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 249 predicate places. [2024-06-28 02:58:42,191 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 265 transitions, 3299 flow [2024-06-28 02:58:42,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:42,191 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:58:42,192 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:58:42,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-28 02:58:42,192 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:58:42,192 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:58:42,192 INFO L85 PathProgramCache]: Analyzing trace with hash -1012736219, now seen corresponding path program 12 times [2024-06-28 02:58:42,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:58:42,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362981457] [2024-06-28 02:58:42,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:58:42,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:58:42,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:58:43,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:58:43,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:58:43,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362981457] [2024-06-28 02:58:43,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362981457] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:58:43,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:58:43,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:58:43,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9792464] [2024-06-28 02:58:43,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:58:43,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:58:43,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:58:43,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:58:43,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:58:43,229 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 02:58:43,230 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 265 transitions, 3299 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:43,230 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:58:43,230 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 02:58:43,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:58:43,546 INFO L124 PetriNetUnfolderBase]: 563/1015 cut-off events. [2024-06-28 02:58:43,546 INFO L125 PetriNetUnfolderBase]: For 136098/136098 co-relation queries the response was YES. [2024-06-28 02:58:43,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9945 conditions, 1015 events. 563/1015 cut-off events. For 136098/136098 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 5139 event pairs, 50 based on Foata normal form. 1/1010 useless extension candidates. Maximal degree in co-relation 9813. Up to 773 conditions per place. [2024-06-28 02:58:43,555 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 205 selfloop transitions, 68 changer transitions 0/276 dead transitions. [2024-06-28 02:58:43,555 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 276 transitions, 4201 flow [2024-06-28 02:58:43,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:58:43,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:58:43,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 133 transitions. [2024-06-28 02:58:43,556 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.415625 [2024-06-28 02:58:43,556 INFO L175 Difference]: Start difference. First operand has 280 places, 265 transitions, 3299 flow. Second operand 10 states and 133 transitions. [2024-06-28 02:58:43,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 276 transitions, 4201 flow [2024-06-28 02:58:43,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 276 transitions, 4121 flow, removed 28 selfloop flow, removed 6 redundant places. [2024-06-28 02:58:43,898 INFO L231 Difference]: Finished difference. Result has 284 places, 265 transitions, 3360 flow [2024-06-28 02:58:43,898 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3219, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3360, PETRI_PLACES=284, PETRI_TRANSITIONS=265} [2024-06-28 02:58:43,899 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 253 predicate places. [2024-06-28 02:58:43,899 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 265 transitions, 3360 flow [2024-06-28 02:58:43,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:43,899 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:58:43,899 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:58:43,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-28 02:58:43,899 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:58:43,899 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:58:43,900 INFO L85 PathProgramCache]: Analyzing trace with hash 856876661, now seen corresponding path program 13 times [2024-06-28 02:58:43,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:58:43,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788075683] [2024-06-28 02:58:43,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:58:43,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:58:43,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:58:44,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:58:44,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:58:44,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788075683] [2024-06-28 02:58:44,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788075683] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:58:44,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:58:44,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:58:44,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511234460] [2024-06-28 02:58:44,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:58:44,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:58:44,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:58:44,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:58:44,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:58:44,794 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 02:58:44,794 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 265 transitions, 3360 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:44,794 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:58:44,794 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 02:58:44,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:58:45,119 INFO L124 PetriNetUnfolderBase]: 589/1056 cut-off events. [2024-06-28 02:58:45,120 INFO L125 PetriNetUnfolderBase]: For 157298/157298 co-relation queries the response was YES. [2024-06-28 02:58:45,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10875 conditions, 1056 events. 589/1056 cut-off events. For 157298/157298 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 5377 event pairs, 52 based on Foata normal form. 2/1053 useless extension candidates. Maximal degree in co-relation 10742. Up to 482 conditions per place. [2024-06-28 02:58:45,130 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 158 selfloop transitions, 130 changer transitions 0/291 dead transitions. [2024-06-28 02:58:45,130 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 291 transitions, 4838 flow [2024-06-28 02:58:45,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:58:45,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:58:45,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 139 transitions. [2024-06-28 02:58:45,131 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.434375 [2024-06-28 02:58:45,131 INFO L175 Difference]: Start difference. First operand has 284 places, 265 transitions, 3360 flow. Second operand 10 states and 139 transitions. [2024-06-28 02:58:45,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 291 transitions, 4838 flow [2024-06-28 02:58:45,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 291 transitions, 4716 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-28 02:58:45,497 INFO L231 Difference]: Finished difference. Result has 288 places, 274 transitions, 3848 flow [2024-06-28 02:58:45,497 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3238, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3848, PETRI_PLACES=288, PETRI_TRANSITIONS=274} [2024-06-28 02:58:45,497 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 257 predicate places. [2024-06-28 02:58:45,498 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 274 transitions, 3848 flow [2024-06-28 02:58:45,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:45,498 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:58:45,498 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:58:45,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-28 02:58:45,498 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:58:45,498 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:58:45,498 INFO L85 PathProgramCache]: Analyzing trace with hash -764575058, now seen corresponding path program 9 times [2024-06-28 02:58:45,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:58:45,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235946216] [2024-06-28 02:58:45,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:58:45,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:58:45,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:58:46,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:58:46,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:58:46,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235946216] [2024-06-28 02:58:46,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235946216] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:58:46,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:58:46,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:58:46,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864434591] [2024-06-28 02:58:46,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:58:46,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:58:46,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:58:46,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:58:46,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:58:46,619 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 02:58:46,619 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 274 transitions, 3848 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:46,619 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:58:46,619 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 02:58:46,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:58:46,958 INFO L124 PetriNetUnfolderBase]: 587/1053 cut-off events. [2024-06-28 02:58:46,959 INFO L125 PetriNetUnfolderBase]: For 156222/156222 co-relation queries the response was YES. [2024-06-28 02:58:46,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11153 conditions, 1053 events. 587/1053 cut-off events. For 156222/156222 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 5367 event pairs, 52 based on Foata normal form. 1/1049 useless extension candidates. Maximal degree in co-relation 11018. Up to 734 conditions per place. [2024-06-28 02:58:46,971 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 191 selfloop transitions, 92 changer transitions 0/286 dead transitions. [2024-06-28 02:58:46,971 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 286 transitions, 4702 flow [2024-06-28 02:58:46,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:58:46,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:58:46,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-28 02:58:46,972 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.396875 [2024-06-28 02:58:46,972 INFO L175 Difference]: Start difference. First operand has 288 places, 274 transitions, 3848 flow. Second operand 10 states and 127 transitions. [2024-06-28 02:58:46,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 286 transitions, 4702 flow [2024-06-28 02:58:47,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 286 transitions, 4560 flow, removed 37 selfloop flow, removed 4 redundant places. [2024-06-28 02:58:47,328 INFO L231 Difference]: Finished difference. Result has 294 places, 276 transitions, 3995 flow [2024-06-28 02:58:47,328 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3710, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3995, PETRI_PLACES=294, PETRI_TRANSITIONS=276} [2024-06-28 02:58:47,328 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 263 predicate places. [2024-06-28 02:58:47,328 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 276 transitions, 3995 flow [2024-06-28 02:58:47,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:47,328 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:58:47,328 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:58:47,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-28 02:58:47,328 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:58:47,329 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:58:47,329 INFO L85 PathProgramCache]: Analyzing trace with hash -1012469309, now seen corresponding path program 14 times [2024-06-28 02:58:47,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:58:47,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879158498] [2024-06-28 02:58:47,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:58:47,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:58:47,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:58:48,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:58:48,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:58:48,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879158498] [2024-06-28 02:58:48,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879158498] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:58:48,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:58:48,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:58:48,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426007457] [2024-06-28 02:58:48,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:58:48,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:58:48,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:58:48,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:58:48,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:58:48,307 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 02:58:48,320 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 276 transitions, 3995 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:48,320 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:58:48,320 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 02:58:48,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:58:48,677 INFO L124 PetriNetUnfolderBase]: 585/1050 cut-off events. [2024-06-28 02:58:48,677 INFO L125 PetriNetUnfolderBase]: For 154251/154251 co-relation queries the response was YES. [2024-06-28 02:58:48,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11136 conditions, 1050 events. 585/1050 cut-off events. For 154251/154251 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 5342 event pairs, 51 based on Foata normal form. 1/1046 useless extension candidates. Maximal degree in co-relation 10999. Up to 810 conditions per place. [2024-06-28 02:58:48,687 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 213 selfloop transitions, 70 changer transitions 0/286 dead transitions. [2024-06-28 02:58:48,687 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 286 transitions, 4755 flow [2024-06-28 02:58:48,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:58:48,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:58:48,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 132 transitions. [2024-06-28 02:58:48,688 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4125 [2024-06-28 02:58:48,688 INFO L175 Difference]: Start difference. First operand has 294 places, 276 transitions, 3995 flow. Second operand 10 states and 132 transitions. [2024-06-28 02:58:48,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 286 transitions, 4755 flow [2024-06-28 02:58:49,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 286 transitions, 4454 flow, removed 60 selfloop flow, removed 8 redundant places. [2024-06-28 02:58:49,132 INFO L231 Difference]: Finished difference. Result has 296 places, 276 transitions, 3839 flow [2024-06-28 02:58:49,132 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3694, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3839, PETRI_PLACES=296, PETRI_TRANSITIONS=276} [2024-06-28 02:58:49,133 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 265 predicate places. [2024-06-28 02:58:49,133 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 276 transitions, 3839 flow [2024-06-28 02:58:49,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:49,133 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:58:49,133 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:58:49,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-28 02:58:49,133 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:58:49,133 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:58:49,133 INFO L85 PathProgramCache]: Analyzing trace with hash -1012469030, now seen corresponding path program 5 times [2024-06-28 02:58:49,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:58:49,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095294735] [2024-06-28 02:58:49,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:58:49,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:58:49,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:58:50,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:58:50,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:58:50,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095294735] [2024-06-28 02:58:50,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095294735] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:58:50,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:58:50,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:58:50,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296577888] [2024-06-28 02:58:50,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:58:50,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:58:50,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:58:50,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:58:50,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:58:50,567 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 02:58:50,567 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 276 transitions, 3839 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:50,567 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:58:50,567 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 02:58:50,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:58:50,937 INFO L124 PetriNetUnfolderBase]: 588/1055 cut-off events. [2024-06-28 02:58:50,937 INFO L125 PetriNetUnfolderBase]: For 156981/156981 co-relation queries the response was YES. [2024-06-28 02:58:50,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11070 conditions, 1055 events. 588/1055 cut-off events. For 156981/156981 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 5378 event pairs, 47 based on Foata normal form. 1/1052 useless extension candidates. Maximal degree in co-relation 10932. Up to 909 conditions per place. [2024-06-28 02:58:50,949 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 236 selfloop transitions, 49 changer transitions 0/288 dead transitions. [2024-06-28 02:58:50,949 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 288 transitions, 4650 flow [2024-06-28 02:58:50,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:58:50,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:58:50,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2024-06-28 02:58:50,950 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-28 02:58:50,950 INFO L175 Difference]: Start difference. First operand has 296 places, 276 transitions, 3839 flow. Second operand 10 states and 125 transitions. [2024-06-28 02:58:50,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 288 transitions, 4650 flow [2024-06-28 02:58:51,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 288 transitions, 4506 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-28 02:58:51,375 INFO L231 Difference]: Finished difference. Result has 297 places, 278 transitions, 3843 flow [2024-06-28 02:58:51,376 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3695, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3843, PETRI_PLACES=297, PETRI_TRANSITIONS=278} [2024-06-28 02:58:51,376 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 266 predicate places. [2024-06-28 02:58:51,376 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 278 transitions, 3843 flow [2024-06-28 02:58:51,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:51,376 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:58:51,376 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:58:51,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-28 02:58:51,376 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:58:51,377 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:58:51,377 INFO L85 PathProgramCache]: Analyzing trace with hash -1012459730, now seen corresponding path program 6 times [2024-06-28 02:58:51,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:58:51,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26309822] [2024-06-28 02:58:51,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:58:51,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:58:51,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:58:52,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:58:52,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:58:52,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26309822] [2024-06-28 02:58:52,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26309822] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:58:52,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:58:52,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:58:52,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809713056] [2024-06-28 02:58:52,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:58:52,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:58:52,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:58:52,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:58:52,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:58:53,005 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 02:58:53,005 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 278 transitions, 3843 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:53,005 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:58:53,005 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 02:58:53,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:58:53,345 INFO L124 PetriNetUnfolderBase]: 586/1052 cut-off events. [2024-06-28 02:58:53,345 INFO L125 PetriNetUnfolderBase]: For 155478/155478 co-relation queries the response was YES. [2024-06-28 02:58:53,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10926 conditions, 1052 events. 586/1052 cut-off events. For 155478/155478 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 5367 event pairs, 47 based on Foata normal form. 1/1049 useless extension candidates. Maximal degree in co-relation 10787. Up to 907 conditions per place. [2024-06-28 02:58:53,356 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 234 selfloop transitions, 50 changer transitions 0/287 dead transitions. [2024-06-28 02:58:53,356 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 287 transitions, 4431 flow [2024-06-28 02:58:53,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:58:53,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:58:53,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-28 02:58:53,357 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.384375 [2024-06-28 02:58:53,357 INFO L175 Difference]: Start difference. First operand has 297 places, 278 transitions, 3843 flow. Second operand 10 states and 123 transitions. [2024-06-28 02:58:53,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 287 transitions, 4431 flow [2024-06-28 02:58:53,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 287 transitions, 4266 flow, removed 33 selfloop flow, removed 8 redundant places. [2024-06-28 02:58:53,768 INFO L231 Difference]: Finished difference. Result has 299 places, 278 transitions, 3783 flow [2024-06-28 02:58:53,768 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3678, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3783, PETRI_PLACES=299, PETRI_TRANSITIONS=278} [2024-06-28 02:58:53,768 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 268 predicate places. [2024-06-28 02:58:53,768 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 278 transitions, 3783 flow [2024-06-28 02:58:53,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:53,768 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:58:53,768 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:58:53,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-28 02:58:53,768 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:58:53,769 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:58:53,769 INFO L85 PathProgramCache]: Analyzing trace with hash -450608701, now seen corresponding path program 15 times [2024-06-28 02:58:53,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:58:53,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881386232] [2024-06-28 02:58:53,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:58:53,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:58:53,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:58:54,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:58:54,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:58:54,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881386232] [2024-06-28 02:58:54,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881386232] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:58:54,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:58:54,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:58:54,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475663758] [2024-06-28 02:58:54,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:58:54,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:58:54,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:58:54,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:58:54,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:58:54,777 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 02:58:54,777 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 278 transitions, 3783 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:54,777 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:58:54,777 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 02:58:54,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:58:55,178 INFO L124 PetriNetUnfolderBase]: 592/1062 cut-off events. [2024-06-28 02:58:55,178 INFO L125 PetriNetUnfolderBase]: For 162746/162746 co-relation queries the response was YES. [2024-06-28 02:58:55,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11015 conditions, 1062 events. 592/1062 cut-off events. For 162746/162746 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 5435 event pairs, 61 based on Foata normal form. 2/1062 useless extension candidates. Maximal degree in co-relation 10875. Up to 971 conditions per place. [2024-06-28 02:58:55,190 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 265 selfloop transitions, 22 changer transitions 0/290 dead transitions. [2024-06-28 02:58:55,190 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 290 transitions, 4445 flow [2024-06-28 02:58:55,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:58:55,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:58:55,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2024-06-28 02:58:55,191 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.371875 [2024-06-28 02:58:55,191 INFO L175 Difference]: Start difference. First operand has 299 places, 278 transitions, 3783 flow. Second operand 10 states and 119 transitions. [2024-06-28 02:58:55,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 290 transitions, 4445 flow [2024-06-28 02:58:55,618 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 290 transitions, 4340 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-28 02:58:55,622 INFO L231 Difference]: Finished difference. Result has 300 places, 280 transitions, 3780 flow [2024-06-28 02:58:55,622 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3678, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3780, PETRI_PLACES=300, PETRI_TRANSITIONS=280} [2024-06-28 02:58:55,622 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 269 predicate places. [2024-06-28 02:58:55,622 INFO L495 AbstractCegarLoop]: Abstraction has has 300 places, 280 transitions, 3780 flow [2024-06-28 02:58:55,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:55,623 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:58:55,623 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:58:55,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-28 02:58:55,623 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:58:55,623 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:58:55,623 INFO L85 PathProgramCache]: Analyzing trace with hash -439556891, now seen corresponding path program 3 times [2024-06-28 02:58:55,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:58:55,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673762654] [2024-06-28 02:58:55,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:58:55,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:58:55,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:58:57,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:58:57,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:58:57,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673762654] [2024-06-28 02:58:57,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673762654] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:58:57,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:58:57,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:58:57,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533076714] [2024-06-28 02:58:57,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:58:57,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:58:57,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:58:57,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:58:57,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:58:57,217 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 02:58:57,218 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 280 transitions, 3780 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:57,218 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:58:57,218 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 02:58:57,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:58:57,712 INFO L124 PetriNetUnfolderBase]: 560/1030 cut-off events. [2024-06-28 02:58:57,712 INFO L125 PetriNetUnfolderBase]: For 168371/168372 co-relation queries the response was YES. [2024-06-28 02:58:57,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10822 conditions, 1030 events. 560/1030 cut-off events. For 168371/168372 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 5435 event pairs, 55 based on Foata normal form. 3/1025 useless extension candidates. Maximal degree in co-relation 10682. Up to 861 conditions per place. [2024-06-28 02:58:57,723 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 228 selfloop transitions, 21 changer transitions 0/292 dead transitions. [2024-06-28 02:58:57,723 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 292 transitions, 4326 flow [2024-06-28 02:58:57,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:58:57,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:58:57,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-28 02:58:57,724 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835227272727273 [2024-06-28 02:58:57,724 INFO L175 Difference]: Start difference. First operand has 300 places, 280 transitions, 3780 flow. Second operand 11 states and 135 transitions. [2024-06-28 02:58:57,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 292 transitions, 4326 flow [2024-06-28 02:58:58,168 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 292 transitions, 4254 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-28 02:58:58,171 INFO L231 Difference]: Finished difference. Result has 303 places, 281 transitions, 3782 flow [2024-06-28 02:58:58,171 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3708, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3782, PETRI_PLACES=303, PETRI_TRANSITIONS=281} [2024-06-28 02:58:58,172 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 272 predicate places. [2024-06-28 02:58:58,172 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 281 transitions, 3782 flow [2024-06-28 02:58:58,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:58,172 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:58:58,172 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:58:58,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-28 02:58:58,172 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:58:58,172 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:58:58,172 INFO L85 PathProgramCache]: Analyzing trace with hash -1012459389, now seen corresponding path program 4 times [2024-06-28 02:58:58,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:58:58,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263743032] [2024-06-28 02:58:58,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:58:58,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:58:58,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:58:59,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:58:59,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:58:59,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263743032] [2024-06-28 02:58:59,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263743032] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:58:59,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:58:59,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:58:59,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078430786] [2024-06-28 02:58:59,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:58:59,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:58:59,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:58:59,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:58:59,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:58:59,489 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 02:58:59,489 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 281 transitions, 3782 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:59,489 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:58:59,489 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 02:58:59,489 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:58:59,847 INFO L124 PetriNetUnfolderBase]: 562/1038 cut-off events. [2024-06-28 02:58:59,847 INFO L125 PetriNetUnfolderBase]: For 171854/171855 co-relation queries the response was YES. [2024-06-28 02:58:59,855 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10895 conditions, 1038 events. 562/1038 cut-off events. For 171854/171855 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 5515 event pairs, 46 based on Foata normal form. 3/1037 useless extension candidates. Maximal degree in co-relation 10754. Up to 862 conditions per place. [2024-06-28 02:58:59,858 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 227 selfloop transitions, 23 changer transitions 0/293 dead transitions. [2024-06-28 02:58:59,858 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 293 transitions, 4344 flow [2024-06-28 02:58:59,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:58:59,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:58:59,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-28 02:58:59,859 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39375 [2024-06-28 02:58:59,859 INFO L175 Difference]: Start difference. First operand has 303 places, 281 transitions, 3782 flow. Second operand 10 states and 126 transitions. [2024-06-28 02:58:59,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 293 transitions, 4344 flow [2024-06-28 02:59:00,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 293 transitions, 4277 flow, removed 14 selfloop flow, removed 9 redundant places. [2024-06-28 02:59:00,286 INFO L231 Difference]: Finished difference. Result has 305 places, 283 transitions, 3812 flow [2024-06-28 02:59:00,286 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3717, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3812, PETRI_PLACES=305, PETRI_TRANSITIONS=283} [2024-06-28 02:59:00,286 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 274 predicate places. [2024-06-28 02:59:00,286 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 283 transitions, 3812 flow [2024-06-28 02:59:00,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:00,286 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:59:00,287 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:59:00,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-28 02:59:00,287 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:59:00,287 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:59:00,287 INFO L85 PathProgramCache]: Analyzing trace with hash 856869221, now seen corresponding path program 16 times [2024-06-28 02:59:00,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:59:00,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891227918] [2024-06-28 02:59:00,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:59:00,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:59:00,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:59:01,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:59:01,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:59:01,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891227918] [2024-06-28 02:59:01,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891227918] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:59:01,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:59:01,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:59:01,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492282025] [2024-06-28 02:59:01,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:59:01,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:59:01,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:59:01,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:59:01,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:59:01,459 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 02:59:01,459 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 283 transitions, 3812 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:01,459 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:59:01,459 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 02:59:01,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:59:01,829 INFO L124 PetriNetUnfolderBase]: 598/1075 cut-off events. [2024-06-28 02:59:01,829 INFO L125 PetriNetUnfolderBase]: For 161271/161271 co-relation queries the response was YES. [2024-06-28 02:59:01,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10988 conditions, 1075 events. 598/1075 cut-off events. For 161271/161271 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 5530 event pairs, 53 based on Foata normal form. 1/1071 useless extension candidates. Maximal degree in co-relation 10845. Up to 663 conditions per place. [2024-06-28 02:59:01,842 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 186 selfloop transitions, 117 changer transitions 0/306 dead transitions. [2024-06-28 02:59:01,842 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 306 transitions, 5022 flow [2024-06-28 02:59:01,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:59:01,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:59:01,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 132 transitions. [2024-06-28 02:59:01,843 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4125 [2024-06-28 02:59:01,843 INFO L175 Difference]: Start difference. First operand has 305 places, 283 transitions, 3812 flow. Second operand 10 states and 132 transitions. [2024-06-28 02:59:01,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 306 transitions, 5022 flow [2024-06-28 02:59:02,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 306 transitions, 4958 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-28 02:59:02,345 INFO L231 Difference]: Finished difference. Result has 310 places, 295 transitions, 4304 flow [2024-06-28 02:59:02,345 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3748, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4304, PETRI_PLACES=310, PETRI_TRANSITIONS=295} [2024-06-28 02:59:02,346 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 279 predicate places. [2024-06-28 02:59:02,346 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 295 transitions, 4304 flow [2024-06-28 02:59:02,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:02,346 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:59:02,346 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:59:02,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-28 02:59:02,347 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:59:02,347 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:59:02,347 INFO L85 PathProgramCache]: Analyzing trace with hash -439545731, now seen corresponding path program 5 times [2024-06-28 02:59:02,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:59:02,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931992569] [2024-06-28 02:59:02,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:59:02,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:59:02,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:59:03,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:59:03,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:59:03,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931992569] [2024-06-28 02:59:03,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931992569] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:59:03,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:59:03,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:59:03,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850273909] [2024-06-28 02:59:03,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:59:03,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:59:03,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:59:03,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:59:03,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:59:03,752 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 02:59:03,752 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 295 transitions, 4304 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:03,752 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:59:03,752 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 02:59:03,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:59:04,173 INFO L124 PetriNetUnfolderBase]: 568/1045 cut-off events. [2024-06-28 02:59:04,174 INFO L125 PetriNetUnfolderBase]: For 172492/172493 co-relation queries the response was YES. [2024-06-28 02:59:04,182 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11234 conditions, 1045 events. 568/1045 cut-off events. For 172492/172493 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 5526 event pairs, 54 based on Foata normal form. 3/1040 useless extension candidates. Maximal degree in co-relation 11088. Up to 862 conditions per place. [2024-06-28 02:59:04,186 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 243 selfloop transitions, 22 changer transitions 0/308 dead transitions. [2024-06-28 02:59:04,186 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 308 transitions, 4886 flow [2024-06-28 02:59:04,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:59:04,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:59:04,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-28 02:59:04,187 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38636363636363635 [2024-06-28 02:59:04,187 INFO L175 Difference]: Start difference. First operand has 310 places, 295 transitions, 4304 flow. Second operand 11 states and 136 transitions. [2024-06-28 02:59:04,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 308 transitions, 4886 flow [2024-06-28 02:59:04,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 308 transitions, 4757 flow, removed 28 selfloop flow, removed 5 redundant places. [2024-06-28 02:59:04,670 INFO L231 Difference]: Finished difference. Result has 316 places, 296 transitions, 4251 flow [2024-06-28 02:59:04,670 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4175, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4251, PETRI_PLACES=316, PETRI_TRANSITIONS=296} [2024-06-28 02:59:04,670 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 285 predicate places. [2024-06-28 02:59:04,670 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 296 transitions, 4251 flow [2024-06-28 02:59:04,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:04,671 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:59:04,671 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:59:04,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-28 02:59:04,671 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:59:04,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:59:04,671 INFO L85 PathProgramCache]: Analyzing trace with hash -764307931, now seen corresponding path program 17 times [2024-06-28 02:59:04,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:59:04,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596290561] [2024-06-28 02:59:04,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:59:04,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:59:04,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:59:05,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:59:05,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:59:05,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596290561] [2024-06-28 02:59:05,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596290561] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:59:05,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:59:05,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:59:05,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082239856] [2024-06-28 02:59:05,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:59:05,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:59:05,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:59:05,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:59:05,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:59:05,581 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 02:59:05,581 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 296 transitions, 4251 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:05,581 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:59:05,581 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 02:59:05,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:59:05,920 INFO L124 PetriNetUnfolderBase]: 599/1079 cut-off events. [2024-06-28 02:59:05,920 INFO L125 PetriNetUnfolderBase]: For 165036/165036 co-relation queries the response was YES. [2024-06-28 02:59:05,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11240 conditions, 1079 events. 599/1079 cut-off events. For 165036/165036 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 5585 event pairs, 52 based on Foata normal form. 2/1076 useless extension candidates. Maximal degree in co-relation 11092. Up to 507 conditions per place. [2024-06-28 02:59:05,933 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 169 selfloop transitions, 140 changer transitions 0/312 dead transitions. [2024-06-28 02:59:05,933 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 312 transitions, 5545 flow [2024-06-28 02:59:05,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:59:05,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:59:05,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 140 transitions. [2024-06-28 02:59:05,933 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-06-28 02:59:05,933 INFO L175 Difference]: Start difference. First operand has 316 places, 296 transitions, 4251 flow. Second operand 10 states and 140 transitions. [2024-06-28 02:59:05,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 312 transitions, 5545 flow [2024-06-28 02:59:06,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 312 transitions, 5390 flow, removed 50 selfloop flow, removed 10 redundant places. [2024-06-28 02:59:06,416 INFO L231 Difference]: Finished difference. Result has 317 places, 298 transitions, 4472 flow [2024-06-28 02:59:06,417 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4120, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=138, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4472, PETRI_PLACES=317, PETRI_TRANSITIONS=298} [2024-06-28 02:59:06,417 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 286 predicate places. [2024-06-28 02:59:06,417 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 298 transitions, 4472 flow [2024-06-28 02:59:06,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:06,417 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:59:06,418 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:59:06,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-28 02:59:06,418 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:59:06,418 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:59:06,418 INFO L85 PathProgramCache]: Analyzing trace with hash -764307652, now seen corresponding path program 7 times [2024-06-28 02:59:06,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:59:06,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107381788] [2024-06-28 02:59:06,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:59:06,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:59:06,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:59:07,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:59:07,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:59:07,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107381788] [2024-06-28 02:59:07,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107381788] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:59:07,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:59:07,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:59:07,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589988073] [2024-06-28 02:59:07,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:59:07,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:59:07,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:59:07,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:59:07,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:59:07,565 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 02:59:07,565 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 298 transitions, 4472 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:07,565 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:59:07,565 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 02:59:07,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:59:07,910 INFO L124 PetriNetUnfolderBase]: 602/1084 cut-off events. [2024-06-28 02:59:07,910 INFO L125 PetriNetUnfolderBase]: For 166067/166067 co-relation queries the response was YES. [2024-06-28 02:59:07,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11521 conditions, 1084 events. 602/1084 cut-off events. For 166067/166067 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 5593 event pairs, 48 based on Foata normal form. 1/1081 useless extension candidates. Maximal degree in co-relation 11371. Up to 885 conditions per place. [2024-06-28 02:59:07,922 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 239 selfloop transitions, 67 changer transitions 0/309 dead transitions. [2024-06-28 02:59:07,922 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 309 transitions, 5169 flow [2024-06-28 02:59:07,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:59:07,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:59:07,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2024-06-28 02:59:07,923 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-28 02:59:07,923 INFO L175 Difference]: Start difference. First operand has 317 places, 298 transitions, 4472 flow. Second operand 10 states and 125 transitions. [2024-06-28 02:59:07,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 309 transitions, 5169 flow [2024-06-28 02:59:08,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 309 transitions, 4794 flow, removed 43 selfloop flow, removed 8 redundant places. [2024-06-28 02:59:08,569 INFO L231 Difference]: Finished difference. Result has 319 places, 300 transitions, 4305 flow [2024-06-28 02:59:08,569 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4113, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4305, PETRI_PLACES=319, PETRI_TRANSITIONS=300} [2024-06-28 02:59:08,569 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 288 predicate places. [2024-06-28 02:59:08,569 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 300 transitions, 4305 flow [2024-06-28 02:59:08,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:08,569 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:59:08,569 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:59:08,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-28 02:59:08,570 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:59:08,570 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:59:08,570 INFO L85 PathProgramCache]: Analyzing trace with hash -764298011, now seen corresponding path program 6 times [2024-06-28 02:59:08,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:59:08,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599548776] [2024-06-28 02:59:08,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:59:08,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:59:08,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:59:09,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:59:09,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:59:09,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599548776] [2024-06-28 02:59:09,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599548776] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:59:09,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:59:09,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:59:09,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435794621] [2024-06-28 02:59:09,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:59:09,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:59:09,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:59:09,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:59:09,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:59:09,839 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 02:59:09,840 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 300 transitions, 4305 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:09,840 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:59:09,840 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 02:59:09,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:59:10,179 INFO L124 PetriNetUnfolderBase]: 565/1043 cut-off events. [2024-06-28 02:59:10,179 INFO L125 PetriNetUnfolderBase]: For 164438/164439 co-relation queries the response was YES. [2024-06-28 02:59:10,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10792 conditions, 1043 events. 565/1043 cut-off events. For 164438/164439 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 5542 event pairs, 45 based on Foata normal form. 3/1042 useless extension candidates. Maximal degree in co-relation 10641. Up to 827 conditions per place. [2024-06-28 02:59:10,192 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 226 selfloop transitions, 38 changer transitions 0/309 dead transitions. [2024-06-28 02:59:10,192 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 309 transitions, 4853 flow [2024-06-28 02:59:10,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:59:10,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:59:10,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 121 transitions. [2024-06-28 02:59:10,192 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4201388888888889 [2024-06-28 02:59:10,192 INFO L175 Difference]: Start difference. First operand has 319 places, 300 transitions, 4305 flow. Second operand 9 states and 121 transitions. [2024-06-28 02:59:10,192 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 309 transitions, 4853 flow [2024-06-28 02:59:10,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 309 transitions, 4684 flow, removed 19 selfloop flow, removed 8 redundant places. [2024-06-28 02:59:10,751 INFO L231 Difference]: Finished difference. Result has 320 places, 300 transitions, 4216 flow [2024-06-28 02:59:10,751 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4136, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4216, PETRI_PLACES=320, PETRI_TRANSITIONS=300} [2024-06-28 02:59:10,751 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 289 predicate places. [2024-06-28 02:59:10,752 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 300 transitions, 4216 flow [2024-06-28 02:59:10,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:10,752 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:59:10,752 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:59:10,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-28 02:59:10,752 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:59:10,752 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:59:10,753 INFO L85 PathProgramCache]: Analyzing trace with hash -764298352, now seen corresponding path program 8 times [2024-06-28 02:59:10,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:59:10,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594343286] [2024-06-28 02:59:10,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:59:10,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:59:10,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:59:11,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:59:11,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:59:11,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594343286] [2024-06-28 02:59:11,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594343286] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:59:11,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:59:11,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:59:11,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925175325] [2024-06-28 02:59:11,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:59:11,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:59:11,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:59:11,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:59:11,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:59:12,052 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 02:59:12,052 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 300 transitions, 4216 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:12,052 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:59:12,052 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 02:59:12,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:59:12,417 INFO L124 PetriNetUnfolderBase]: 596/1074 cut-off events. [2024-06-28 02:59:12,418 INFO L125 PetriNetUnfolderBase]: For 156708/156708 co-relation queries the response was YES. [2024-06-28 02:59:12,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10835 conditions, 1074 events. 596/1074 cut-off events. For 156708/156708 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 5565 event pairs, 47 based on Foata normal form. 1/1071 useless extension candidates. Maximal degree in co-relation 10683. Up to 866 conditions per place. [2024-06-28 02:59:12,431 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 234 selfloop transitions, 72 changer transitions 0/309 dead transitions. [2024-06-28 02:59:12,431 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 309 transitions, 4848 flow [2024-06-28 02:59:12,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:59:12,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:59:12,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-28 02:59:12,432 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39375 [2024-06-28 02:59:12,432 INFO L175 Difference]: Start difference. First operand has 320 places, 300 transitions, 4216 flow. Second operand 10 states and 126 transitions. [2024-06-28 02:59:12,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 309 transitions, 4848 flow [2024-06-28 02:59:13,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 309 transitions, 4681 flow, removed 31 selfloop flow, removed 8 redundant places. [2024-06-28 02:59:13,018 INFO L231 Difference]: Finished difference. Result has 322 places, 300 transitions, 4198 flow [2024-06-28 02:59:13,019 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4049, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4198, PETRI_PLACES=322, PETRI_TRANSITIONS=300} [2024-06-28 02:59:13,019 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 291 predicate places. [2024-06-28 02:59:13,019 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 300 transitions, 4198 flow [2024-06-28 02:59:13,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:13,019 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:59:13,019 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:59:13,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-28 02:59:13,020 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:59:13,020 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:59:13,020 INFO L85 PathProgramCache]: Analyzing trace with hash -1020087869, now seen corresponding path program 18 times [2024-06-28 02:59:13,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:59:13,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057900502] [2024-06-28 02:59:13,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:59:13,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:59:13,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:59:13,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:59:13,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:59:13,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057900502] [2024-06-28 02:59:13,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057900502] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:59:13,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:59:13,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:59:13,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871297335] [2024-06-28 02:59:13,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:59:13,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:59:13,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:59:13,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:59:13,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:59:13,979 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 02:59:13,979 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 300 transitions, 4198 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:13,979 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:59:13,979 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 02:59:13,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:59:14,337 INFO L124 PetriNetUnfolderBase]: 598/1078 cut-off events. [2024-06-28 02:59:14,337 INFO L125 PetriNetUnfolderBase]: For 163388/163388 co-relation queries the response was YES. [2024-06-28 02:59:14,346 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10696 conditions, 1078 events. 598/1078 cut-off events. For 163388/163388 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 5605 event pairs, 52 based on Foata normal form. 4/1077 useless extension candidates. Maximal degree in co-relation 10543. Up to 874 conditions per place. [2024-06-28 02:59:14,350 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 254 selfloop transitions, 56 changer transitions 0/313 dead transitions. [2024-06-28 02:59:14,350 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 313 transitions, 4953 flow [2024-06-28 02:59:14,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:59:14,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:59:14,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-28 02:59:14,351 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39375 [2024-06-28 02:59:14,351 INFO L175 Difference]: Start difference. First operand has 322 places, 300 transitions, 4198 flow. Second operand 10 states and 126 transitions. [2024-06-28 02:59:14,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 313 transitions, 4953 flow [2024-06-28 02:59:14,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 313 transitions, 4797 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-28 02:59:14,934 INFO L231 Difference]: Finished difference. Result has 323 places, 303 transitions, 4260 flow [2024-06-28 02:59:14,935 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4042, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4260, PETRI_PLACES=323, PETRI_TRANSITIONS=303} [2024-06-28 02:59:14,935 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 292 predicate places. [2024-06-28 02:59:14,935 INFO L495 AbstractCegarLoop]: Abstraction has has 323 places, 303 transitions, 4260 flow [2024-06-28 02:59:14,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:14,935 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:59:14,935 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:59:14,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-28 02:59:14,936 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:59:14,936 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:59:14,936 INFO L85 PathProgramCache]: Analyzing trace with hash -1020088086, now seen corresponding path program 10 times [2024-06-28 02:59:14,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:59:14,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39850158] [2024-06-28 02:59:14,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:59:14,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:59:14,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:59:15,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:59:15,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:59:15,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39850158] [2024-06-28 02:59:15,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39850158] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:59:15,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:59:15,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:59:15,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414503415] [2024-06-28 02:59:15,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:59:15,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:59:15,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:59:15,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:59:15,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:59:15,891 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 02:59:15,891 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 303 transitions, 4260 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:15,891 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:59:15,891 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 02:59:15,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:59:16,266 INFO L124 PetriNetUnfolderBase]: 601/1085 cut-off events. [2024-06-28 02:59:16,267 INFO L125 PetriNetUnfolderBase]: For 154241/154241 co-relation queries the response was YES. [2024-06-28 02:59:16,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10807 conditions, 1085 events. 601/1085 cut-off events. For 154241/154241 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 5653 event pairs, 52 based on Foata normal form. 1/1081 useless extension candidates. Maximal degree in co-relation 10654. Up to 888 conditions per place. [2024-06-28 02:59:16,280 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 258 selfloop transitions, 53 changer transitions 0/314 dead transitions. [2024-06-28 02:59:16,280 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 314 transitions, 4990 flow [2024-06-28 02:59:16,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:59:16,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:59:16,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-28 02:59:16,281 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3875 [2024-06-28 02:59:16,281 INFO L175 Difference]: Start difference. First operand has 323 places, 303 transitions, 4260 flow. Second operand 10 states and 124 transitions. [2024-06-28 02:59:16,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 314 transitions, 4990 flow [2024-06-28 02:59:16,896 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 314 transitions, 4721 flow, removed 60 selfloop flow, removed 10 redundant places. [2024-06-28 02:59:16,899 INFO L231 Difference]: Finished difference. Result has 323 places, 305 transitions, 4194 flow [2024-06-28 02:59:16,900 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3991, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4194, PETRI_PLACES=323, PETRI_TRANSITIONS=305} [2024-06-28 02:59:16,900 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 292 predicate places. [2024-06-28 02:59:16,900 INFO L495 AbstractCegarLoop]: Abstraction has has 323 places, 305 transitions, 4194 flow [2024-06-28 02:59:16,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:16,900 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:59:16,901 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:59:16,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-28 02:59:16,901 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:59:16,901 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:59:16,901 INFO L85 PathProgramCache]: Analyzing trace with hash -1019886276, now seen corresponding path program 11 times [2024-06-28 02:59:16,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:59:16,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727973131] [2024-06-28 02:59:16,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:59:16,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:59:16,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:59:17,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:59:17,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:59:17,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727973131] [2024-06-28 02:59:17,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727973131] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:59:17,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:59:17,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:59:17,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950634563] [2024-06-28 02:59:17,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:59:17,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:59:17,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:59:17,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:59:17,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:59:17,918 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 02:59:17,919 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 305 transitions, 4194 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:17,919 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:59:17,919 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 02:59:17,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:59:18,320 INFO L124 PetriNetUnfolderBase]: 599/1082 cut-off events. [2024-06-28 02:59:18,320 INFO L125 PetriNetUnfolderBase]: For 150852/150852 co-relation queries the response was YES. [2024-06-28 02:59:18,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10479 conditions, 1082 events. 599/1082 cut-off events. For 150852/150852 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 5618 event pairs, 52 based on Foata normal form. 1/1078 useless extension candidates. Maximal degree in co-relation 10327. Up to 876 conditions per place. [2024-06-28 02:59:18,333 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 254 selfloop transitions, 57 changer transitions 0/314 dead transitions. [2024-06-28 02:59:18,334 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 314 transitions, 4836 flow [2024-06-28 02:59:18,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:59:18,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:59:18,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-28 02:59:18,334 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39375 [2024-06-28 02:59:18,334 INFO L175 Difference]: Start difference. First operand has 323 places, 305 transitions, 4194 flow. Second operand 10 states and 126 transitions. [2024-06-28 02:59:18,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 314 transitions, 4836 flow [2024-06-28 02:59:18,920 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 314 transitions, 4585 flow, removed 74 selfloop flow, removed 8 redundant places. [2024-06-28 02:59:18,924 INFO L231 Difference]: Finished difference. Result has 325 places, 305 transitions, 4062 flow [2024-06-28 02:59:18,925 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3943, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4062, PETRI_PLACES=325, PETRI_TRANSITIONS=305} [2024-06-28 02:59:18,925 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 294 predicate places. [2024-06-28 02:59:18,925 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 305 transitions, 4062 flow [2024-06-28 02:59:18,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:18,925 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:59:18,925 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:59:18,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-28 02:59:18,926 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:59:18,926 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:59:18,926 INFO L85 PathProgramCache]: Analyzing trace with hash -1019886059, now seen corresponding path program 19 times [2024-06-28 02:59:18,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:59:18,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929020734] [2024-06-28 02:59:18,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:59:18,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:59:18,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:59:19,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:59:19,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:59:19,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929020734] [2024-06-28 02:59:19,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929020734] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:59:19,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:59:19,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:59:19,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880419761] [2024-06-28 02:59:19,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:59:19,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:59:19,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:59:19,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:59:19,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:59:19,888 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 02:59:19,888 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 305 transitions, 4062 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:19,888 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:59:19,888 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 02:59:19,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:59:20,216 INFO L124 PetriNetUnfolderBase]: 610/1100 cut-off events. [2024-06-28 02:59:20,216 INFO L125 PetriNetUnfolderBase]: For 162919/162919 co-relation queries the response was YES. [2024-06-28 02:59:20,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10719 conditions, 1100 events. 610/1100 cut-off events. For 162919/162919 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 5742 event pairs, 51 based on Foata normal form. 2/1097 useless extension candidates. Maximal degree in co-relation 10566. Up to 865 conditions per place. [2024-06-28 02:59:20,229 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 253 selfloop transitions, 66 changer transitions 0/322 dead transitions. [2024-06-28 02:59:20,229 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 322 transitions, 5128 flow [2024-06-28 02:59:20,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:59:20,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:59:20,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 132 transitions. [2024-06-28 02:59:20,232 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4125 [2024-06-28 02:59:20,232 INFO L175 Difference]: Start difference. First operand has 325 places, 305 transitions, 4062 flow. Second operand 10 states and 132 transitions. [2024-06-28 02:59:20,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 322 transitions, 5128 flow [2024-06-28 02:59:20,828 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 322 transitions, 4947 flow, removed 8 selfloop flow, removed 10 redundant places. [2024-06-28 02:59:20,832 INFO L231 Difference]: Finished difference. Result has 325 places, 310 transitions, 4183 flow [2024-06-28 02:59:20,832 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3881, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4183, PETRI_PLACES=325, PETRI_TRANSITIONS=310} [2024-06-28 02:59:20,832 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 294 predicate places. [2024-06-28 02:59:20,832 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 310 transitions, 4183 flow [2024-06-28 02:59:20,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:20,833 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:59:20,833 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:59:20,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-28 02:59:20,833 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:59:20,833 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:59:20,833 INFO L85 PathProgramCache]: Analyzing trace with hash -1019878619, now seen corresponding path program 20 times [2024-06-28 02:59:20,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:59:20,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023356155] [2024-06-28 02:59:20,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:59:20,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:59:20,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:59:21,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:59:21,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:59:21,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023356155] [2024-06-28 02:59:21,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023356155] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:59:21,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:59:21,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:59:21,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277068843] [2024-06-28 02:59:21,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:59:21,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:59:21,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:59:21,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:59:21,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:59:21,820 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 02:59:21,820 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 310 transitions, 4183 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:21,820 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:59:21,820 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 02:59:21,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:59:22,169 INFO L124 PetriNetUnfolderBase]: 606/1094 cut-off events. [2024-06-28 02:59:22,170 INFO L125 PetriNetUnfolderBase]: For 156483/156483 co-relation queries the response was YES. [2024-06-28 02:59:22,179 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10382 conditions, 1094 events. 606/1094 cut-off events. For 156483/156483 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 5713 event pairs, 51 based on Foata normal form. 2/1091 useless extension candidates. Maximal degree in co-relation 10229. Up to 862 conditions per place. [2024-06-28 02:59:22,183 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 250 selfloop transitions, 67 changer transitions 0/320 dead transitions. [2024-06-28 02:59:22,183 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 320 transitions, 4860 flow [2024-06-28 02:59:22,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:59:22,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:59:22,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 130 transitions. [2024-06-28 02:59:22,183 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-28 02:59:22,183 INFO L175 Difference]: Start difference. First operand has 325 places, 310 transitions, 4183 flow. Second operand 10 states and 130 transitions. [2024-06-28 02:59:22,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 320 transitions, 4860 flow [2024-06-28 02:59:22,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 320 transitions, 4615 flow, removed 86 selfloop flow, removed 6 redundant places. [2024-06-28 02:59:22,689 INFO L231 Difference]: Finished difference. Result has 329 places, 310 transitions, 4091 flow [2024-06-28 02:59:22,689 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3950, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4091, PETRI_PLACES=329, PETRI_TRANSITIONS=310} [2024-06-28 02:59:22,689 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 298 predicate places. [2024-06-28 02:59:22,689 INFO L495 AbstractCegarLoop]: Abstraction has has 329 places, 310 transitions, 4091 flow [2024-06-28 02:59:22,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:22,689 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:59:22,689 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:59:22,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-28 02:59:22,689 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:59:22,690 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:59:22,690 INFO L85 PathProgramCache]: Analyzing trace with hash -415115516, now seen corresponding path program 9 times [2024-06-28 02:59:22,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:59:22,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395636445] [2024-06-28 02:59:22,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:59:22,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:59:22,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:59:23,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:59:23,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:59:23,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395636445] [2024-06-28 02:59:23,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395636445] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:59:23,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:59:23,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:59:23,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114971096] [2024-06-28 02:59:23,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:59:23,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:59:23,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:59:23,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:59:23,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:59:23,993 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 02:59:23,993 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 310 transitions, 4091 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:23,993 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:59:23,993 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 02:59:23,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:59:24,344 INFO L124 PetriNetUnfolderBase]: 615/1109 cut-off events. [2024-06-28 02:59:24,344 INFO L125 PetriNetUnfolderBase]: For 153050/153050 co-relation queries the response was YES. [2024-06-28 02:59:24,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10456 conditions, 1109 events. 615/1109 cut-off events. For 153050/153050 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 5770 event pairs, 41 based on Foata normal form. 1/1108 useless extension candidates. Maximal degree in co-relation 10301. Up to 1016 conditions per place. [2024-06-28 02:59:24,357 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 302 selfloop transitions, 26 changer transitions 0/331 dead transitions. [2024-06-28 02:59:24,357 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 331 transitions, 4885 flow [2024-06-28 02:59:24,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:59:24,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:59:24,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-28 02:59:24,358 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-28 02:59:24,358 INFO L175 Difference]: Start difference. First operand has 329 places, 310 transitions, 4091 flow. Second operand 11 states and 132 transitions. [2024-06-28 02:59:24,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 331 transitions, 4885 flow [2024-06-28 02:59:24,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 331 transitions, 4722 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-28 02:59:24,941 INFO L231 Difference]: Finished difference. Result has 333 places, 316 transitions, 4103 flow [2024-06-28 02:59:24,941 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3928, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4103, PETRI_PLACES=333, PETRI_TRANSITIONS=316} [2024-06-28 02:59:24,942 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 302 predicate places. [2024-06-28 02:59:24,942 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 316 transitions, 4103 flow [2024-06-28 02:59:24,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:24,942 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:59:24,942 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:59:24,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-28 02:59:24,942 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:59:24,942 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:59:24,942 INFO L85 PathProgramCache]: Analyzing trace with hash 1721417024, now seen corresponding path program 10 times [2024-06-28 02:59:24,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:59:24,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445808423] [2024-06-28 02:59:24,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:59:24,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:59:24,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:59:26,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:59:26,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:59:26,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445808423] [2024-06-28 02:59:26,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445808423] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:59:26,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:59:26,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:59:26,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624774130] [2024-06-28 02:59:26,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:59:26,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:59:26,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:59:26,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:59:26,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:59:26,139 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 02:59:26,139 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 316 transitions, 4103 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:26,139 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:59:26,139 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 02:59:26,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:59:26,517 INFO L124 PetriNetUnfolderBase]: 612/1104 cut-off events. [2024-06-28 02:59:26,517 INFO L125 PetriNetUnfolderBase]: For 150230/150230 co-relation queries the response was YES. [2024-06-28 02:59:26,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10239 conditions, 1104 events. 612/1104 cut-off events. For 150230/150230 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 5781 event pairs, 38 based on Foata normal form. 1/1103 useless extension candidates. Maximal degree in co-relation 10081. Up to 1011 conditions per place. [2024-06-28 02:59:26,530 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 303 selfloop transitions, 25 changer transitions 0/331 dead transitions. [2024-06-28 02:59:26,530 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 331 transitions, 4807 flow [2024-06-28 02:59:26,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:59:26,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:59:26,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-28 02:59:26,531 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-28 02:59:26,531 INFO L175 Difference]: Start difference. First operand has 333 places, 316 transitions, 4103 flow. Second operand 11 states and 132 transitions. [2024-06-28 02:59:26,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 331 transitions, 4807 flow [2024-06-28 02:59:27,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 331 transitions, 4716 flow, removed 24 selfloop flow, removed 7 redundant places. [2024-06-28 02:59:27,122 INFO L231 Difference]: Finished difference. Result has 338 places, 317 transitions, 4084 flow [2024-06-28 02:59:27,122 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4012, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=316, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=291, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4084, PETRI_PLACES=338, PETRI_TRANSITIONS=317} [2024-06-28 02:59:27,122 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 307 predicate places. [2024-06-28 02:59:27,122 INFO L495 AbstractCegarLoop]: Abstraction has has 338 places, 317 transitions, 4084 flow [2024-06-28 02:59:27,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:27,123 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:59:27,123 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:59:27,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-28 02:59:27,123 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:59:27,123 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:59:27,123 INFO L85 PathProgramCache]: Analyzing trace with hash -1940697261, now seen corresponding path program 1 times [2024-06-28 02:59:27,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:59:27,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128310875] [2024-06-28 02:59:27,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:59:27,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:59:27,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:59:27,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:59:27,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:59:27,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128310875] [2024-06-28 02:59:27,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128310875] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:59:27,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:59:27,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:59:27,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588503982] [2024-06-28 02:59:27,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:59:27,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:59:27,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:59:27,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:59:27,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:59:28,034 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 02:59:28,034 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 317 transitions, 4084 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:28,034 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:59:28,034 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 02:59:28,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:59:28,569 INFO L124 PetriNetUnfolderBase]: 616/1112 cut-off events. [2024-06-28 02:59:28,569 INFO L125 PetriNetUnfolderBase]: For 158418/158418 co-relation queries the response was YES. [2024-06-28 02:59:28,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10292 conditions, 1112 events. 616/1112 cut-off events. For 158418/158418 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 5855 event pairs, 24 based on Foata normal form. 2/1112 useless extension candidates. Maximal degree in co-relation 10132. Up to 966 conditions per place. [2024-06-28 02:59:28,582 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 305 selfloop transitions, 30 changer transitions 0/338 dead transitions. [2024-06-28 02:59:28,582 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 338 transitions, 4830 flow [2024-06-28 02:59:28,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:59:28,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:59:28,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-28 02:59:28,583 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39375 [2024-06-28 02:59:28,583 INFO L175 Difference]: Start difference. First operand has 338 places, 317 transitions, 4084 flow. Second operand 10 states and 126 transitions. [2024-06-28 02:59:28,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 338 transitions, 4830 flow [2024-06-28 02:59:29,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 338 transitions, 4695 flow, removed 14 selfloop flow, removed 12 redundant places. [2024-06-28 02:59:29,169 INFO L231 Difference]: Finished difference. Result has 336 places, 318 transitions, 4039 flow [2024-06-28 02:59:29,169 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3949, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4039, PETRI_PLACES=336, PETRI_TRANSITIONS=318} [2024-06-28 02:59:29,169 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 305 predicate places. [2024-06-28 02:59:29,169 INFO L495 AbstractCegarLoop]: Abstraction has has 336 places, 318 transitions, 4039 flow [2024-06-28 02:59:29,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:29,170 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:59:29,170 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:59:29,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-28 02:59:29,170 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:59:29,170 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:59:29,170 INFO L85 PathProgramCache]: Analyzing trace with hash -731475817, now seen corresponding path program 2 times [2024-06-28 02:59:29,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:59:29,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914558190] [2024-06-28 02:59:29,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:59:29,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:59:29,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:59:29,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:59:29,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:59:29,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914558190] [2024-06-28 02:59:29,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914558190] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:59:29,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:59:29,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:59:29,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850163908] [2024-06-28 02:59:29,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:59:29,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:59:29,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:59:29,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:59:29,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:59:30,041 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 02:59:30,041 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 318 transitions, 4039 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:30,041 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:59:30,041 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 02:59:30,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:59:30,541 INFO L124 PetriNetUnfolderBase]: 620/1120 cut-off events. [2024-06-28 02:59:30,542 INFO L125 PetriNetUnfolderBase]: For 161253/161253 co-relation queries the response was YES. [2024-06-28 02:59:30,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10354 conditions, 1120 events. 620/1120 cut-off events. For 161253/161253 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 5892 event pairs, 41 based on Foata normal form. 2/1120 useless extension candidates. Maximal degree in co-relation 10195. Up to 991 conditions per place. [2024-06-28 02:59:30,555 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 304 selfloop transitions, 31 changer transitions 0/338 dead transitions. [2024-06-28 02:59:30,555 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 338 transitions, 4785 flow [2024-06-28 02:59:30,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:59:30,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:59:30,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-28 02:59:30,556 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.396875 [2024-06-28 02:59:30,556 INFO L175 Difference]: Start difference. First operand has 336 places, 318 transitions, 4039 flow. Second operand 10 states and 127 transitions. [2024-06-28 02:59:30,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 338 transitions, 4785 flow [2024-06-28 02:59:31,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 338 transitions, 4705 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-28 02:59:31,132 INFO L231 Difference]: Finished difference. Result has 338 places, 319 transitions, 4053 flow [2024-06-28 02:59:31,132 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3959, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=318, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4053, PETRI_PLACES=338, PETRI_TRANSITIONS=319} [2024-06-28 02:59:31,132 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 307 predicate places. [2024-06-28 02:59:31,132 INFO L495 AbstractCegarLoop]: Abstraction has has 338 places, 319 transitions, 4053 flow [2024-06-28 02:59:31,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:31,132 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:59:31,132 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:59:31,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-28 02:59:31,133 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:59:31,133 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:59:31,133 INFO L85 PathProgramCache]: Analyzing trace with hash -1563285149, now seen corresponding path program 3 times [2024-06-28 02:59:31,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:59:31,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44224043] [2024-06-28 02:59:31,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:59:31,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:59:31,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:59:31,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:59:31,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:59:31,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44224043] [2024-06-28 02:59:31,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44224043] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:59:31,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:59:31,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:59:31,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890274824] [2024-06-28 02:59:31,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:59:31,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:59:31,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:59:31,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:59:31,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:59:31,957 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 02:59:31,957 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 319 transitions, 4053 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:31,957 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:59:31,957 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 02:59:31,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:59:32,410 INFO L124 PetriNetUnfolderBase]: 624/1128 cut-off events. [2024-06-28 02:59:32,410 INFO L125 PetriNetUnfolderBase]: For 166185/166185 co-relation queries the response was YES. [2024-06-28 02:59:32,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10420 conditions, 1128 events. 624/1128 cut-off events. For 166185/166185 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 5949 event pairs, 39 based on Foata normal form. 2/1128 useless extension candidates. Maximal degree in co-relation 10260. Up to 990 conditions per place. [2024-06-28 02:59:32,424 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 298 selfloop transitions, 40 changer transitions 0/341 dead transitions. [2024-06-28 02:59:32,424 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 341 transitions, 4873 flow [2024-06-28 02:59:32,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:59:32,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:59:32,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-28 02:59:32,425 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3875 [2024-06-28 02:59:32,425 INFO L175 Difference]: Start difference. First operand has 338 places, 319 transitions, 4053 flow. Second operand 10 states and 124 transitions. [2024-06-28 02:59:32,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 341 transitions, 4873 flow [2024-06-28 02:59:33,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 341 transitions, 4789 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-28 02:59:33,007 INFO L231 Difference]: Finished difference. Result has 341 places, 325 transitions, 4173 flow [2024-06-28 02:59:33,008 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3969, PETRI_DIFFERENCE_MINUEND_PLACES=330, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4173, PETRI_PLACES=341, PETRI_TRANSITIONS=325} [2024-06-28 02:59:33,008 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 310 predicate places. [2024-06-28 02:59:33,008 INFO L495 AbstractCegarLoop]: Abstraction has has 341 places, 325 transitions, 4173 flow [2024-06-28 02:59:33,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:33,008 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:59:33,008 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:59:33,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-28 02:59:33,008 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:59:33,008 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:59:33,008 INFO L85 PathProgramCache]: Analyzing trace with hash -1678571359, now seen corresponding path program 1 times [2024-06-28 02:59:33,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:59:33,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288726878] [2024-06-28 02:59:33,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:59:33,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:59:33,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:59:34,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:59:34,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:59:34,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288726878] [2024-06-28 02:59:34,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288726878] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:59:34,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:59:34,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:59:34,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020395452] [2024-06-28 02:59:34,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:59:34,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:59:34,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:59:34,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:59:34,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:59:34,193 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 02:59:34,193 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 325 transitions, 4173 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:34,193 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:59:34,193 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 02:59:34,193 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:59:34,676 INFO L124 PetriNetUnfolderBase]: 630/1138 cut-off events. [2024-06-28 02:59:34,676 INFO L125 PetriNetUnfolderBase]: For 168982/168982 co-relation queries the response was YES. [2024-06-28 02:59:34,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10598 conditions, 1138 events. 630/1138 cut-off events. For 168982/168982 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 6013 event pairs, 40 based on Foata normal form. 2/1138 useless extension candidates. Maximal degree in co-relation 10436. Up to 1006 conditions per place. [2024-06-28 02:59:34,687 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 310 selfloop transitions, 34 changer transitions 0/347 dead transitions. [2024-06-28 02:59:34,687 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 347 transitions, 4997 flow [2024-06-28 02:59:34,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:59:34,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:59:34,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2024-06-28 02:59:34,688 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39204545454545453 [2024-06-28 02:59:34,688 INFO L175 Difference]: Start difference. First operand has 341 places, 325 transitions, 4173 flow. Second operand 11 states and 138 transitions. [2024-06-28 02:59:34,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 347 transitions, 4997 flow [2024-06-28 02:59:35,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 345 places, 347 transitions, 4912 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-28 02:59:35,347 INFO L231 Difference]: Finished difference. Result has 346 places, 327 transitions, 4231 flow [2024-06-28 02:59:35,347 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4088, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=325, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=291, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4231, PETRI_PLACES=346, PETRI_TRANSITIONS=327} [2024-06-28 02:59:35,347 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 315 predicate places. [2024-06-28 02:59:35,347 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 327 transitions, 4231 flow [2024-06-28 02:59:35,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:35,347 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:59:35,347 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:59:35,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-28 02:59:35,347 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:59:35,348 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:59:35,348 INFO L85 PathProgramCache]: Analyzing trace with hash -1563107209, now seen corresponding path program 2 times [2024-06-28 02:59:35,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:59:35,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298518455] [2024-06-28 02:59:35,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:59:35,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:59:35,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:59:36,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:59:36,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:59:36,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298518455] [2024-06-28 02:59:36,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298518455] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:59:36,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:59:36,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:59:36,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30481712] [2024-06-28 02:59:36,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:59:36,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:59:36,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:59:36,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:59:36,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:59:36,410 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 02:59:36,411 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 327 transitions, 4231 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:36,411 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:59:36,411 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 02:59:36,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:59:36,937 INFO L124 PetriNetUnfolderBase]: 658/1189 cut-off events. [2024-06-28 02:59:36,937 INFO L125 PetriNetUnfolderBase]: For 197074/197074 co-relation queries the response was YES. [2024-06-28 02:59:36,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11734 conditions, 1189 events. 658/1189 cut-off events. For 197074/197074 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 6338 event pairs, 36 based on Foata normal form. 1/1188 useless extension candidates. Maximal degree in co-relation 11571. Up to 1003 conditions per place. [2024-06-28 02:59:36,952 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 298 selfloop transitions, 54 changer transitions 0/355 dead transitions. [2024-06-28 02:59:36,952 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 355 transitions, 5722 flow [2024-06-28 02:59:36,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:59:36,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:59:36,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 142 transitions. [2024-06-28 02:59:36,953 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4034090909090909 [2024-06-28 02:59:36,953 INFO L175 Difference]: Start difference. First operand has 346 places, 327 transitions, 4231 flow. Second operand 11 states and 142 transitions. [2024-06-28 02:59:36,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 356 places, 355 transitions, 5722 flow [2024-06-28 02:59:37,728 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 355 transitions, 5601 flow, removed 28 selfloop flow, removed 9 redundant places. [2024-06-28 02:59:37,732 INFO L231 Difference]: Finished difference. Result has 349 places, 337 transitions, 4565 flow [2024-06-28 02:59:37,732 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4110, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4565, PETRI_PLACES=349, PETRI_TRANSITIONS=337} [2024-06-28 02:59:37,732 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 318 predicate places. [2024-06-28 02:59:37,732 INFO L495 AbstractCegarLoop]: Abstraction has has 349 places, 337 transitions, 4565 flow [2024-06-28 02:59:37,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:37,733 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:59:37,733 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:59:37,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-28 02:59:37,733 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:59:37,733 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:59:37,733 INFO L85 PathProgramCache]: Analyzing trace with hash -1563100699, now seen corresponding path program 3 times [2024-06-28 02:59:37,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:59:37,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110229372] [2024-06-28 02:59:37,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:59:37,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:59:37,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:59:38,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:59:38,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:59:38,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110229372] [2024-06-28 02:59:38,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110229372] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:59:38,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:59:38,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:59:38,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181793352] [2024-06-28 02:59:38,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:59:38,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:59:38,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:59:38,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:59:38,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:59:38,784 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 02:59:38,784 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 349 places, 337 transitions, 4565 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:38,784 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:59:38,784 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 02:59:38,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:59:39,254 INFO L124 PetriNetUnfolderBase]: 655/1186 cut-off events. [2024-06-28 02:59:39,254 INFO L125 PetriNetUnfolderBase]: For 195380/195380 co-relation queries the response was YES. [2024-06-28 02:59:39,264 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11540 conditions, 1186 events. 655/1186 cut-off events. For 195380/195380 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 6332 event pairs, 36 based on Foata normal form. 2/1186 useless extension candidates. Maximal degree in co-relation 11375. Up to 1002 conditions per place. [2024-06-28 02:59:39,268 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 298 selfloop transitions, 53 changer transitions 0/354 dead transitions. [2024-06-28 02:59:39,268 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 359 places, 354 transitions, 5527 flow [2024-06-28 02:59:39,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:59:39,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:59:39,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 140 transitions. [2024-06-28 02:59:39,269 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3977272727272727 [2024-06-28 02:59:39,269 INFO L175 Difference]: Start difference. First operand has 349 places, 337 transitions, 4565 flow. Second operand 11 states and 140 transitions. [2024-06-28 02:59:39,269 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 359 places, 354 transitions, 5527 flow [2024-06-28 02:59:40,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 353 places, 354 transitions, 5317 flow, removed 79 selfloop flow, removed 6 redundant places. [2024-06-28 02:59:40,044 INFO L231 Difference]: Finished difference. Result has 354 places, 337 transitions, 4468 flow [2024-06-28 02:59:40,044 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4355, PETRI_DIFFERENCE_MINUEND_PLACES=343, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=337, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4468, PETRI_PLACES=354, PETRI_TRANSITIONS=337} [2024-06-28 02:59:40,044 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 323 predicate places. [2024-06-28 02:59:40,045 INFO L495 AbstractCegarLoop]: Abstraction has has 354 places, 337 transitions, 4468 flow [2024-06-28 02:59:40,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:40,045 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:59:40,045 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:59:40,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-28 02:59:40,045 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:59:40,045 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:59:40,045 INFO L85 PathProgramCache]: Analyzing trace with hash -1563100451, now seen corresponding path program 1 times [2024-06-28 02:59:40,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:59:40,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048306503] [2024-06-28 02:59:40,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:59:40,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:59:40,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:59:40,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:59:40,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:59:40,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048306503] [2024-06-28 02:59:40,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048306503] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:59:40,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:59:40,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:59:40,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639684682] [2024-06-28 02:59:40,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:59:40,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:59:40,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:59:40,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:59:40,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:59:40,977 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 02:59:40,977 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 354 places, 337 transitions, 4468 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:40,977 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:59:40,977 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 02:59:40,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:59:41,385 INFO L124 PetriNetUnfolderBase]: 650/1177 cut-off events. [2024-06-28 02:59:41,386 INFO L125 PetriNetUnfolderBase]: For 185936/185936 co-relation queries the response was YES. [2024-06-28 02:59:41,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11133 conditions, 1177 events. 650/1177 cut-off events. For 185936/185936 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 6279 event pairs, 37 based on Foata normal form. 2/1177 useless extension candidates. Maximal degree in co-relation 10966. Up to 1015 conditions per place. [2024-06-28 02:59:41,399 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 303 selfloop transitions, 46 changer transitions 0/352 dead transitions. [2024-06-28 02:59:41,399 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 352 transitions, 5204 flow [2024-06-28 02:59:41,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:59:41,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:59:41,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 128 transitions. [2024-06-28 02:59:41,400 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-28 02:59:41,400 INFO L175 Difference]: Start difference. First operand has 354 places, 337 transitions, 4468 flow. Second operand 10 states and 128 transitions. [2024-06-28 02:59:41,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 352 transitions, 5204 flow [2024-06-28 02:59:42,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 352 transitions, 5104 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-28 02:59:42,054 INFO L231 Difference]: Finished difference. Result has 355 places, 337 transitions, 4468 flow [2024-06-28 02:59:42,054 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4368, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=337, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=291, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4468, PETRI_PLACES=355, PETRI_TRANSITIONS=337} [2024-06-28 02:59:42,055 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 324 predicate places. [2024-06-28 02:59:42,055 INFO L495 AbstractCegarLoop]: Abstraction has has 355 places, 337 transitions, 4468 flow [2024-06-28 02:59:42,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:42,055 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:59:42,055 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:59:42,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-28 02:59:42,055 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:59:42,055 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:59:42,055 INFO L85 PathProgramCache]: Analyzing trace with hash -1397646015, now seen corresponding path program 4 times [2024-06-28 02:59:42,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:59:42,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294909804] [2024-06-28 02:59:42,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:59:42,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:59:42,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:59:42,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:59:42,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:59:42,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294909804] [2024-06-28 02:59:42,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294909804] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:59:42,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:59:42,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:59:42,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645321162] [2024-06-28 02:59:42,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:59:42,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:59:42,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:59:42,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:59:42,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:59:42,932 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 02:59:42,932 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 355 places, 337 transitions, 4468 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:42,932 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:59:42,932 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 02:59:42,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:59:43,386 INFO L124 PetriNetUnfolderBase]: 654/1185 cut-off events. [2024-06-28 02:59:43,386 INFO L125 PetriNetUnfolderBase]: For 189696/189696 co-relation queries the response was YES. [2024-06-28 02:59:43,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11230 conditions, 1185 events. 654/1185 cut-off events. For 189696/189696 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 6334 event pairs, 36 based on Foata normal form. 2/1185 useless extension candidates. Maximal degree in co-relation 11062. Up to 1001 conditions per place. [2024-06-28 02:59:43,399 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 305 selfloop transitions, 47 changer transitions 0/355 dead transitions. [2024-06-28 02:59:43,399 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 364 places, 355 transitions, 5276 flow [2024-06-28 02:59:43,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:59:43,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:59:43,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2024-06-28 02:59:43,400 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-28 02:59:43,400 INFO L175 Difference]: Start difference. First operand has 355 places, 337 transitions, 4468 flow. Second operand 10 states and 125 transitions. [2024-06-28 02:59:43,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 364 places, 355 transitions, 5276 flow [2024-06-28 02:59:44,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 356 places, 355 transitions, 5140 flow, removed 25 selfloop flow, removed 8 redundant places. [2024-06-28 02:59:44,129 INFO L231 Difference]: Finished difference. Result has 357 places, 340 transitions, 4499 flow [2024-06-28 02:59:44,129 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4332, PETRI_DIFFERENCE_MINUEND_PLACES=347, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=337, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4499, PETRI_PLACES=357, PETRI_TRANSITIONS=340} [2024-06-28 02:59:44,130 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 326 predicate places. [2024-06-28 02:59:44,130 INFO L495 AbstractCegarLoop]: Abstraction has has 357 places, 340 transitions, 4499 flow [2024-06-28 02:59:44,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:44,130 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:59:44,130 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:59:44,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-28 02:59:44,130 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:59:44,131 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:59:44,131 INFO L85 PathProgramCache]: Analyzing trace with hash -1397461565, now seen corresponding path program 4 times [2024-06-28 02:59:44,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:59:44,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086378141] [2024-06-28 02:59:44,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:59:44,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:59:44,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:59:45,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:59:45,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:59:45,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086378141] [2024-06-28 02:59:45,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086378141] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:59:45,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:59:45,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:59:45,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387626755] [2024-06-28 02:59:45,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:59:45,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:59:45,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:59:45,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:59:45,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:59:45,322 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 02:59:45,322 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 357 places, 340 transitions, 4499 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:45,322 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:59:45,322 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 02:59:45,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:59:45,810 INFO L124 PetriNetUnfolderBase]: 662/1200 cut-off events. [2024-06-28 02:59:45,811 INFO L125 PetriNetUnfolderBase]: For 193884/193884 co-relation queries the response was YES. [2024-06-28 02:59:45,822 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11521 conditions, 1200 events. 662/1200 cut-off events. For 193884/193884 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 6453 event pairs, 35 based on Foata normal form. 1/1199 useless extension candidates. Maximal degree in co-relation 11352. Up to 1017 conditions per place. [2024-06-28 02:59:45,825 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 299 selfloop transitions, 57 changer transitions 0/359 dead transitions. [2024-06-28 02:59:45,826 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 367 places, 359 transitions, 5615 flow [2024-06-28 02:59:45,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:59:45,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:59:45,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2024-06-28 02:59:45,826 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39204545454545453 [2024-06-28 02:59:45,826 INFO L175 Difference]: Start difference. First operand has 357 places, 340 transitions, 4499 flow. Second operand 11 states and 138 transitions. [2024-06-28 02:59:45,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 367 places, 359 transitions, 5615 flow [2024-06-28 02:59:46,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 359 transitions, 5457 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-06-28 02:59:46,551 INFO L231 Difference]: Finished difference. Result has 359 places, 344 transitions, 4608 flow [2024-06-28 02:59:46,551 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4341, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=340, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=285, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4608, PETRI_PLACES=359, PETRI_TRANSITIONS=344} [2024-06-28 02:59:46,552 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 328 predicate places. [2024-06-28 02:59:46,552 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 344 transitions, 4608 flow [2024-06-28 02:59:46,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:46,552 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:59:46,552 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:59:46,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-28 02:59:46,552 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:59:46,552 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:59:46,552 INFO L85 PathProgramCache]: Analyzing trace with hash -1397461317, now seen corresponding path program 2 times [2024-06-28 02:59:46,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:59:46,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210128780] [2024-06-28 02:59:46,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:59:46,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:59:46,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:59:47,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:59:47,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:59:47,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210128780] [2024-06-28 02:59:47,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210128780] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:59:47,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:59:47,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:59:47,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231150171] [2024-06-28 02:59:47,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:59:47,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:59:47,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:59:47,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:59:47,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:59:47,528 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 02:59:47,528 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 344 transitions, 4608 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:47,528 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:59:47,528 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 02:59:47,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:59:47,953 INFO L124 PetriNetUnfolderBase]: 658/1196 cut-off events. [2024-06-28 02:59:47,953 INFO L125 PetriNetUnfolderBase]: For 191104/191104 co-relation queries the response was YES. [2024-06-28 02:59:47,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11228 conditions, 1196 events. 658/1196 cut-off events. For 191104/191104 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 6445 event pairs, 35 based on Foata normal form. 2/1196 useless extension candidates. Maximal degree in co-relation 11059. Up to 1015 conditions per place. [2024-06-28 02:59:47,967 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 300 selfloop transitions, 54 changer transitions 0/357 dead transitions. [2024-06-28 02:59:47,967 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 357 transitions, 5348 flow [2024-06-28 02:59:47,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:59:47,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:59:47,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 128 transitions. [2024-06-28 02:59:47,967 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-28 02:59:47,968 INFO L175 Difference]: Start difference. First operand has 359 places, 344 transitions, 4608 flow. Second operand 10 states and 128 transitions. [2024-06-28 02:59:47,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 357 transitions, 5348 flow [2024-06-28 02:59:48,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 357 transitions, 5150 flow, removed 64 selfloop flow, removed 7 redundant places. [2024-06-28 02:59:48,702 INFO L231 Difference]: Finished difference. Result has 362 places, 344 transitions, 4526 flow [2024-06-28 02:59:48,703 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4410, PETRI_DIFFERENCE_MINUEND_PLACES=352, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=344, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=290, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4526, PETRI_PLACES=362, PETRI_TRANSITIONS=344} [2024-06-28 02:59:48,703 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 331 predicate places. [2024-06-28 02:59:48,703 INFO L495 AbstractCegarLoop]: Abstraction has has 362 places, 344 transitions, 4526 flow [2024-06-28 02:59:48,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:48,703 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:59:48,703 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:59:48,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-28 02:59:48,703 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:59:48,703 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:59:48,703 INFO L85 PathProgramCache]: Analyzing trace with hash -1391205455, now seen corresponding path program 5 times [2024-06-28 02:59:48,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:59:48,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699199079] [2024-06-28 02:59:48,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:59:48,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:59:48,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:59:49,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:59:49,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:59:49,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699199079] [2024-06-28 02:59:49,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699199079] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:59:49,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:59:49,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:59:49,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061257738] [2024-06-28 02:59:49,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:59:49,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:59:49,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:59:49,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:59:49,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:59:49,778 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 02:59:49,778 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 362 places, 344 transitions, 4526 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:49,778 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:59:49,778 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 02:59:49,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:59:50,299 INFO L124 PetriNetUnfolderBase]: 689/1254 cut-off events. [2024-06-28 02:59:50,299 INFO L125 PetriNetUnfolderBase]: For 227649/227649 co-relation queries the response was YES. [2024-06-28 02:59:50,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12560 conditions, 1254 events. 689/1254 cut-off events. For 227649/227649 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 6850 event pairs, 34 based on Foata normal form. 2/1254 useless extension candidates. Maximal degree in co-relation 12389. Up to 911 conditions per place. [2024-06-28 02:59:50,311 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 283 selfloop transitions, 88 changer transitions 0/374 dead transitions. [2024-06-28 02:59:50,311 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 374 transitions, 6414 flow [2024-06-28 02:59:50,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:59:50,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:59:50,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 147 transitions. [2024-06-28 02:59:50,312 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41761363636363635 [2024-06-28 02:59:50,312 INFO L175 Difference]: Start difference. First operand has 362 places, 344 transitions, 4526 flow. Second operand 11 states and 147 transitions. [2024-06-28 02:59:50,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 374 transitions, 6414 flow [2024-06-28 02:59:51,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 374 transitions, 6212 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-28 02:59:51,175 INFO L231 Difference]: Finished difference. Result has 362 places, 353 transitions, 4841 flow [2024-06-28 02:59:51,175 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4324, PETRI_DIFFERENCE_MINUEND_PLACES=351, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=344, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4841, PETRI_PLACES=362, PETRI_TRANSITIONS=353} [2024-06-28 02:59:51,175 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 331 predicate places. [2024-06-28 02:59:51,175 INFO L495 AbstractCegarLoop]: Abstraction has has 362 places, 353 transitions, 4841 flow [2024-06-28 02:59:51,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:51,175 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:59:51,175 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:59:51,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-28 02:59:51,175 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:59:51,176 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:59:51,176 INFO L85 PathProgramCache]: Analyzing trace with hash -1391211965, now seen corresponding path program 6 times [2024-06-28 02:59:51,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:59:51,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105529333] [2024-06-28 02:59:51,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:59:51,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:59:51,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:59:52,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:59:52,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:59:52,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105529333] [2024-06-28 02:59:52,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105529333] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:59:52,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:59:52,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:59:52,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298661634] [2024-06-28 02:59:52,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:59:52,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:59:52,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:59:52,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:59:52,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:59:52,512 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 02:59:52,512 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 362 places, 353 transitions, 4841 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:52,512 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:59:52,512 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 02:59:52,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:59:53,084 INFO L124 PetriNetUnfolderBase]: 687/1253 cut-off events. [2024-06-28 02:59:53,084 INFO L125 PetriNetUnfolderBase]: For 219789/219789 co-relation queries the response was YES. [2024-06-28 02:59:53,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12488 conditions, 1253 events. 687/1253 cut-off events. For 219789/219789 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 6862 event pairs, 33 based on Foata normal form. 1/1252 useless extension candidates. Maximal degree in co-relation 12317. Up to 977 conditions per place. [2024-06-28 02:59:53,100 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 293 selfloop transitions, 80 changer transitions 0/376 dead transitions. [2024-06-28 02:59:53,100 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 376 transitions, 6330 flow [2024-06-28 02:59:53,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:59:53,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:59:53,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 141 transitions. [2024-06-28 02:59:53,101 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4005681818181818 [2024-06-28 02:59:53,101 INFO L175 Difference]: Start difference. First operand has 362 places, 353 transitions, 4841 flow. Second operand 11 states and 141 transitions. [2024-06-28 02:59:53,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 376 transitions, 6330 flow [2024-06-28 02:59:53,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 367 places, 376 transitions, 6090 flow, removed 92 selfloop flow, removed 5 redundant places. [2024-06-28 02:59:53,922 INFO L231 Difference]: Finished difference. Result has 371 places, 360 transitions, 5082 flow [2024-06-28 02:59:53,922 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4663, PETRI_DIFFERENCE_MINUEND_PLACES=357, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=353, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5082, PETRI_PLACES=371, PETRI_TRANSITIONS=360} [2024-06-28 02:59:53,923 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 340 predicate places. [2024-06-28 02:59:53,923 INFO L495 AbstractCegarLoop]: Abstraction has has 371 places, 360 transitions, 5082 flow [2024-06-28 02:59:53,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:53,923 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:59:53,923 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:59:53,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-28 02:59:53,923 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:59:53,923 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:59:53,923 INFO L85 PathProgramCache]: Analyzing trace with hash -1397468075, now seen corresponding path program 7 times [2024-06-28 02:59:53,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:59:53,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317030540] [2024-06-28 02:59:53,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:59:53,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:59:53,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:59:55,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:59:55,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:59:55,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317030540] [2024-06-28 02:59:55,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317030540] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:59:55,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:59:55,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:59:55,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130686551] [2024-06-28 02:59:55,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:59:55,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:59:55,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:59:55,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:59:55,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:59:55,248 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 02:59:55,248 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 371 places, 360 transitions, 5082 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:55,248 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:59:55,249 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 02:59:55,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:59:55,814 INFO L124 PetriNetUnfolderBase]: 685/1250 cut-off events. [2024-06-28 02:59:55,814 INFO L125 PetriNetUnfolderBase]: For 215912/215912 co-relation queries the response was YES. [2024-06-28 02:59:55,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12424 conditions, 1250 events. 685/1250 cut-off events. For 215912/215912 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 6828 event pairs, 35 based on Foata normal form. 1/1249 useless extension candidates. Maximal degree in co-relation 12248. Up to 1056 conditions per place. [2024-06-28 02:59:55,829 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 314 selfloop transitions, 57 changer transitions 0/374 dead transitions. [2024-06-28 02:59:55,829 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 381 places, 374 transitions, 5858 flow [2024-06-28 02:59:55,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:59:55,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:59:55,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2024-06-28 02:59:55,830 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39204545454545453 [2024-06-28 02:59:55,830 INFO L175 Difference]: Start difference. First operand has 371 places, 360 transitions, 5082 flow. Second operand 11 states and 138 transitions. [2024-06-28 02:59:55,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 381 places, 374 transitions, 5858 flow [2024-06-28 02:59:56,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 376 places, 374 transitions, 5646 flow, removed 78 selfloop flow, removed 5 redundant places. [2024-06-28 02:59:56,538 INFO L231 Difference]: Finished difference. Result has 377 places, 360 transitions, 4989 flow [2024-06-28 02:59:56,538 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4870, PETRI_DIFFERENCE_MINUEND_PLACES=366, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=360, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=303, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4989, PETRI_PLACES=377, PETRI_TRANSITIONS=360} [2024-06-28 02:59:56,538 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 346 predicate places. [2024-06-28 02:59:56,538 INFO L495 AbstractCegarLoop]: Abstraction has has 377 places, 360 transitions, 4989 flow [2024-06-28 02:59:56,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:56,539 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:59:56,539 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:59:56,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-28 02:59:56,539 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:59:56,539 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:59:56,539 INFO L85 PathProgramCache]: Analyzing trace with hash -1390974815, now seen corresponding path program 8 times [2024-06-28 02:59:56,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:59:56,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438505247] [2024-06-28 02:59:56,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:59:56,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:59:56,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:59:57,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:59:57,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:59:57,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438505247] [2024-06-28 02:59:57,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438505247] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:59:57,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:59:57,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:59:57,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927013290] [2024-06-28 02:59:57,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:59:57,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:59:57,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:59:57,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:59:57,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:59:57,587 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 02:59:57,587 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 360 transitions, 4989 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:57,587 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:59:57,587 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 02:59:57,587 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:59:58,128 INFO L124 PetriNetUnfolderBase]: 686/1252 cut-off events. [2024-06-28 02:59:58,128 INFO L125 PetriNetUnfolderBase]: For 218028/218028 co-relation queries the response was YES. [2024-06-28 02:59:58,140 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12294 conditions, 1252 events. 686/1252 cut-off events. For 218028/218028 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 6861 event pairs, 33 based on Foata normal form. 2/1252 useless extension candidates. Maximal degree in co-relation 12116. Up to 912 conditions per place. [2024-06-28 02:59:58,144 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 278 selfloop transitions, 98 changer transitions 0/379 dead transitions. [2024-06-28 02:59:58,144 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 387 places, 379 transitions, 6327 flow [2024-06-28 02:59:58,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:59:58,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:59:58,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 144 transitions. [2024-06-28 02:59:58,145 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-06-28 02:59:58,145 INFO L175 Difference]: Start difference. First operand has 377 places, 360 transitions, 4989 flow. Second operand 11 states and 144 transitions. [2024-06-28 02:59:58,145 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 387 places, 379 transitions, 6327 flow [2024-06-28 02:59:58,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 377 places, 379 transitions, 6127 flow, removed 41 selfloop flow, removed 10 redundant places. [2024-06-28 02:59:58,937 INFO L231 Difference]: Finished difference. Result has 378 places, 362 transitions, 5065 flow [2024-06-28 02:59:58,937 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4795, PETRI_DIFFERENCE_MINUEND_PLACES=367, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=360, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5065, PETRI_PLACES=378, PETRI_TRANSITIONS=362} [2024-06-28 02:59:58,937 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 347 predicate places. [2024-06-28 02:59:58,937 INFO L495 AbstractCegarLoop]: Abstraction has has 378 places, 362 transitions, 5065 flow [2024-06-28 02:59:58,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:58,937 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:59:58,937 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:59:58,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-28 02:59:58,938 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:59:58,938 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:59:58,938 INFO L85 PathProgramCache]: Analyzing trace with hash -1650229869, now seen corresponding path program 1 times [2024-06-28 02:59:58,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:59:58,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236730703] [2024-06-28 02:59:58,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:59:58,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:59:58,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:00:00,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:00:00,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:00:00,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236730703] [2024-06-28 03:00:00,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236730703] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:00:00,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:00:00,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:00:00,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459155628] [2024-06-28 03:00:00,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:00:00,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:00:00,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:00:00,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:00:00,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:00:00,325 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 03:00:00,325 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 378 places, 362 transitions, 5065 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:00:00,325 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:00:00,325 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 03:00:00,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:00:00,773 INFO L124 PetriNetUnfolderBase]: 690/1258 cut-off events. [2024-06-28 03:00:00,773 INFO L125 PetriNetUnfolderBase]: For 223036/223036 co-relation queries the response was YES. [2024-06-28 03:00:00,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12422 conditions, 1258 events. 690/1258 cut-off events. For 223036/223036 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 6886 event pairs, 36 based on Foata normal form. 2/1258 useless extension candidates. Maximal degree in co-relation 12243. Up to 1113 conditions per place. [2024-06-28 03:00:00,791 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 333 selfloop transitions, 42 changer transitions 0/378 dead transitions. [2024-06-28 03:00:00,791 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 388 places, 378 transitions, 5889 flow [2024-06-28 03:00:00,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:00:00,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:00:00,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 131 transitions. [2024-06-28 03:00:00,792 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3721590909090909 [2024-06-28 03:00:00,792 INFO L175 Difference]: Start difference. First operand has 378 places, 362 transitions, 5065 flow. Second operand 11 states and 131 transitions. [2024-06-28 03:00:00,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 388 places, 378 transitions, 5889 flow [2024-06-28 03:00:01,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 380 places, 378 transitions, 5672 flow, removed 31 selfloop flow, removed 8 redundant places. [2024-06-28 03:00:01,566 INFO L231 Difference]: Finished difference. Result has 381 places, 363 transitions, 4978 flow [2024-06-28 03:00:01,566 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4848, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=362, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=320, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4978, PETRI_PLACES=381, PETRI_TRANSITIONS=363} [2024-06-28 03:00:01,566 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 350 predicate places. [2024-06-28 03:00:01,566 INFO L495 AbstractCegarLoop]: Abstraction has has 381 places, 363 transitions, 4978 flow [2024-06-28 03:00:01,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:00:01,567 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:00:01,567 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:00:01,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-28 03:00:01,567 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:00:01,567 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:00:01,567 INFO L85 PathProgramCache]: Analyzing trace with hash 1156381027, now seen corresponding path program 5 times [2024-06-28 03:00:01,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:00:01,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145975684] [2024-06-28 03:00:01,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:00:01,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:00:01,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:00:02,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:00:02,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:00:02,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145975684] [2024-06-28 03:00:02,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145975684] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:00:02,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:00:02,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:00:02,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749337805] [2024-06-28 03:00:02,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:00:02,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:00:02,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:00:02,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:00:02,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:00:02,475 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 03:00:02,475 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 381 places, 363 transitions, 4978 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:00:02,475 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:00:02,475 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 03:00:02,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:00:02,939 INFO L124 PetriNetUnfolderBase]: 694/1266 cut-off events. [2024-06-28 03:00:02,939 INFO L125 PetriNetUnfolderBase]: For 226276/226276 co-relation queries the response was YES. [2024-06-28 03:00:02,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12370 conditions, 1266 events. 694/1266 cut-off events. For 226276/226276 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 6957 event pairs, 37 based on Foata normal form. 2/1266 useless extension candidates. Maximal degree in co-relation 12190. Up to 1067 conditions per place. [2024-06-28 03:00:02,956 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 319 selfloop transitions, 56 changer transitions 0/378 dead transitions. [2024-06-28 03:00:02,956 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 390 places, 378 transitions, 5820 flow [2024-06-28 03:00:02,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:00:02,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:00:02,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-28 03:00:02,956 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.384375 [2024-06-28 03:00:02,957 INFO L175 Difference]: Start difference. First operand has 381 places, 363 transitions, 4978 flow. Second operand 10 states and 123 transitions. [2024-06-28 03:00:02,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 390 places, 378 transitions, 5820 flow [2024-06-28 03:00:03,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 382 places, 378 transitions, 5711 flow, removed 19 selfloop flow, removed 8 redundant places. [2024-06-28 03:00:03,657 INFO L231 Difference]: Finished difference. Result has 383 places, 366 transitions, 5052 flow [2024-06-28 03:00:03,657 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4869, PETRI_DIFFERENCE_MINUEND_PLACES=373, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=363, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=309, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5052, PETRI_PLACES=383, PETRI_TRANSITIONS=366} [2024-06-28 03:00:03,657 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 352 predicate places. [2024-06-28 03:00:03,657 INFO L495 AbstractCegarLoop]: Abstraction has has 383 places, 366 transitions, 5052 flow [2024-06-28 03:00:03,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:00:03,657 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:00:03,657 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:00:03,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-28 03:00:03,658 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:00:03,658 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:00:03,658 INFO L85 PathProgramCache]: Analyzing trace with hash 1384706195, now seen corresponding path program 2 times [2024-06-28 03:00:03,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:00:03,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450009689] [2024-06-28 03:00:03,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:00:03,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:00:03,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:00:05,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:00:05,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:00:05,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450009689] [2024-06-28 03:00:05,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450009689] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:00:05,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:00:05,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:00:05,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246792453] [2024-06-28 03:00:05,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:00:05,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:00:05,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:00:05,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:00:05,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:00:05,182 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 03:00:05,182 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 383 places, 366 transitions, 5052 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:00:05,182 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:00:05,182 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 03:00:05,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:00:05,668 INFO L124 PetriNetUnfolderBase]: 698/1272 cut-off events. [2024-06-28 03:00:05,668 INFO L125 PetriNetUnfolderBase]: For 230122/230122 co-relation queries the response was YES. [2024-06-28 03:00:05,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12467 conditions, 1272 events. 698/1272 cut-off events. For 230122/230122 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 6986 event pairs, 36 based on Foata normal form. 2/1272 useless extension candidates. Maximal degree in co-relation 12286. Up to 1102 conditions per place. [2024-06-28 03:00:05,682 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 328 selfloop transitions, 50 changer transitions 0/381 dead transitions. [2024-06-28 03:00:05,682 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 393 places, 381 transitions, 5896 flow [2024-06-28 03:00:05,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:00:05,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:00:05,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-28 03:00:05,683 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3778409090909091 [2024-06-28 03:00:05,683 INFO L175 Difference]: Start difference. First operand has 383 places, 366 transitions, 5052 flow. Second operand 11 states and 133 transitions. [2024-06-28 03:00:05,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 393 places, 381 transitions, 5896 flow [2024-06-28 03:00:06,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 386 places, 381 transitions, 5755 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-28 03:00:06,518 INFO L231 Difference]: Finished difference. Result has 387 places, 368 transitions, 5075 flow [2024-06-28 03:00:06,518 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4911, PETRI_DIFFERENCE_MINUEND_PLACES=376, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=366, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=317, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5075, PETRI_PLACES=387, PETRI_TRANSITIONS=368} [2024-06-28 03:00:06,518 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 356 predicate places. [2024-06-28 03:00:06,519 INFO L495 AbstractCegarLoop]: Abstraction has has 387 places, 368 transitions, 5075 flow [2024-06-28 03:00:06,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:00:06,519 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:00:06,519 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:00:06,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-28 03:00:06,519 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:00:06,519 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:00:06,519 INFO L85 PathProgramCache]: Analyzing trace with hash 1163052227, now seen corresponding path program 9 times [2024-06-28 03:00:06,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:00:06,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547042665] [2024-06-28 03:00:06,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:00:06,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:00:06,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:00:07,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:00:07,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:00:07,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547042665] [2024-06-28 03:00:07,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547042665] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:00:07,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:00:07,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:00:07,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085447329] [2024-06-28 03:00:07,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:00:07,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:00:07,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:00:07,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:00:07,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:00:07,688 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 03:00:07,689 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 387 places, 368 transitions, 5075 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:00:07,689 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:00:07,689 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 03:00:07,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:00:08,202 INFO L124 PetriNetUnfolderBase]: 706/1289 cut-off events. [2024-06-28 03:00:08,203 INFO L125 PetriNetUnfolderBase]: For 234431/234431 co-relation queries the response was YES. [2024-06-28 03:00:08,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12782 conditions, 1289 events. 706/1289 cut-off events. For 234431/234431 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 7114 event pairs, 38 based on Foata normal form. 1/1288 useless extension candidates. Maximal degree in co-relation 12600. Up to 1044 conditions per place. [2024-06-28 03:00:08,221 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 311 selfloop transitions, 71 changer transitions 0/385 dead transitions. [2024-06-28 03:00:08,221 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 397 places, 385 transitions, 6275 flow [2024-06-28 03:00:08,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:00:08,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:00:08,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 140 transitions. [2024-06-28 03:00:08,221 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3977272727272727 [2024-06-28 03:00:08,221 INFO L175 Difference]: Start difference. First operand has 387 places, 368 transitions, 5075 flow. Second operand 11 states and 140 transitions. [2024-06-28 03:00:08,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 397 places, 385 transitions, 6275 flow [2024-06-28 03:00:09,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 387 places, 385 transitions, 6042 flow, removed 36 selfloop flow, removed 10 redundant places. [2024-06-28 03:00:09,014 INFO L231 Difference]: Finished difference. Result has 388 places, 372 transitions, 5157 flow [2024-06-28 03:00:09,014 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4842, PETRI_DIFFERENCE_MINUEND_PLACES=377, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=368, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=299, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5157, PETRI_PLACES=388, PETRI_TRANSITIONS=372} [2024-06-28 03:00:09,014 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 357 predicate places. [2024-06-28 03:00:09,014 INFO L495 AbstractCegarLoop]: Abstraction has has 388 places, 372 transitions, 5157 flow [2024-06-28 03:00:09,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:00:09,014 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:00:09,014 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:00:09,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-28 03:00:09,015 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:00:09,015 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:00:09,015 INFO L85 PathProgramCache]: Analyzing trace with hash 1163060845, now seen corresponding path program 3 times [2024-06-28 03:00:09,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:00:09,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258550407] [2024-06-28 03:00:09,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:00:09,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:00:09,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:00:10,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:00:10,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:00:10,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258550407] [2024-06-28 03:00:10,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258550407] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:00:10,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:00:10,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:00:10,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605075675] [2024-06-28 03:00:10,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:00:10,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:00:10,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:00:10,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:00:10,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:00:10,359 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 03:00:10,360 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 388 places, 372 transitions, 5157 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:00:10,360 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:00:10,360 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 03:00:10,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:00:10,868 INFO L124 PetriNetUnfolderBase]: 709/1297 cut-off events. [2024-06-28 03:00:10,869 INFO L125 PetriNetUnfolderBase]: For 238378/238378 co-relation queries the response was YES. [2024-06-28 03:00:10,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12761 conditions, 1297 events. 709/1297 cut-off events. For 238378/238378 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 7170 event pairs, 37 based on Foata normal form. 1/1296 useless extension candidates. Maximal degree in co-relation 12580. Up to 1047 conditions per place. [2024-06-28 03:00:10,884 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 307 selfloop transitions, 77 changer transitions 0/387 dead transitions. [2024-06-28 03:00:10,885 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 398 places, 387 transitions, 6249 flow [2024-06-28 03:00:10,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:00:10,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:00:10,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 142 transitions. [2024-06-28 03:00:10,885 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4034090909090909 [2024-06-28 03:00:10,885 INFO L175 Difference]: Start difference. First operand has 388 places, 372 transitions, 5157 flow. Second operand 11 states and 142 transitions. [2024-06-28 03:00:10,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 398 places, 387 transitions, 6249 flow [2024-06-28 03:00:11,884 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 391 places, 387 transitions, 6064 flow, removed 51 selfloop flow, removed 7 redundant places. [2024-06-28 03:00:11,888 INFO L231 Difference]: Finished difference. Result has 392 places, 374 transitions, 5181 flow [2024-06-28 03:00:11,888 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4972, PETRI_DIFFERENCE_MINUEND_PLACES=381, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=372, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5181, PETRI_PLACES=392, PETRI_TRANSITIONS=374} [2024-06-28 03:00:11,889 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 361 predicate places. [2024-06-28 03:00:11,889 INFO L495 AbstractCegarLoop]: Abstraction has has 392 places, 374 transitions, 5181 flow [2024-06-28 03:00:11,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:00:11,889 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:00:11,889 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:00:11,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-28 03:00:11,889 INFO L420 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:00:11,889 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:00:11,889 INFO L85 PathProgramCache]: Analyzing trace with hash 897301743, now seen corresponding path program 4 times [2024-06-28 03:00:11,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:00:11,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097286722] [2024-06-28 03:00:11,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:00:11,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:00:11,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:00:13,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:00:13,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:00:13,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097286722] [2024-06-28 03:00:13,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097286722] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:00:13,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:00:13,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:00:13,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557473082] [2024-06-28 03:00:13,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:00:13,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:00:13,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:00:13,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:00:13,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:00:13,336 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 03:00:13,337 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 392 places, 374 transitions, 5181 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:00:13,337 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:00:13,337 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 03:00:13,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:00:13,817 INFO L124 PetriNetUnfolderBase]: 705/1288 cut-off events. [2024-06-28 03:00:13,817 INFO L125 PetriNetUnfolderBase]: For 233556/233556 co-relation queries the response was YES. [2024-06-28 03:00:13,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12495 conditions, 1288 events. 705/1288 cut-off events. For 233556/233556 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 7117 event pairs, 37 based on Foata normal form. 2/1288 useless extension candidates. Maximal degree in co-relation 12312. Up to 1073 conditions per place. [2024-06-28 03:00:13,834 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 320 selfloop transitions, 63 changer transitions 0/386 dead transitions. [2024-06-28 03:00:13,834 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 402 places, 386 transitions, 5975 flow [2024-06-28 03:00:13,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:00:13,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:00:13,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-28 03:00:13,835 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38920454545454547 [2024-06-28 03:00:13,835 INFO L175 Difference]: Start difference. First operand has 392 places, 374 transitions, 5181 flow. Second operand 11 states and 137 transitions. [2024-06-28 03:00:13,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 402 places, 386 transitions, 5975 flow [2024-06-28 03:00:14,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 392 places, 386 transitions, 5680 flow, removed 46 selfloop flow, removed 10 redundant places. [2024-06-28 03:00:14,802 INFO L231 Difference]: Finished difference. Result has 393 places, 374 transitions, 5018 flow [2024-06-28 03:00:14,802 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4886, PETRI_DIFFERENCE_MINUEND_PLACES=382, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=374, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=311, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5018, PETRI_PLACES=393, PETRI_TRANSITIONS=374} [2024-06-28 03:00:14,803 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 362 predicate places. [2024-06-28 03:00:14,803 INFO L495 AbstractCegarLoop]: Abstraction has has 393 places, 374 transitions, 5018 flow [2024-06-28 03:00:14,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:00:14,803 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:00:14,803 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:00:14,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-28 03:00:14,803 INFO L420 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:00:14,803 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:00:14,803 INFO L85 PathProgramCache]: Analyzing trace with hash 1392749765, now seen corresponding path program 3 times [2024-06-28 03:00:14,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:00:14,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995954177] [2024-06-28 03:00:14,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:00:14,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:00:14,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:00:16,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:00:16,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:00:16,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995954177] [2024-06-28 03:00:16,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995954177] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:00:16,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:00:16,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:00:16,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526364239] [2024-06-28 03:00:16,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:00:16,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:00:16,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:00:16,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:00:16,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:00:16,283 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 03:00:16,283 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 393 places, 374 transitions, 5018 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:00:16,283 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:00:16,283 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 03:00:16,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:00:16,733 INFO L124 PetriNetUnfolderBase]: 712/1301 cut-off events. [2024-06-28 03:00:16,733 INFO L125 PetriNetUnfolderBase]: For 236813/236813 co-relation queries the response was YES. [2024-06-28 03:00:16,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12489 conditions, 1301 events. 712/1301 cut-off events. For 236813/236813 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 7214 event pairs, 37 based on Foata normal form. 2/1301 useless extension candidates. Maximal degree in co-relation 12306. Up to 1127 conditions per place. [2024-06-28 03:00:16,750 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 333 selfloop transitions, 54 changer transitions 0/390 dead transitions. [2024-06-28 03:00:16,750 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 403 places, 390 transitions, 5882 flow [2024-06-28 03:00:16,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:00:16,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:00:16,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-28 03:00:16,750 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-28 03:00:16,750 INFO L175 Difference]: Start difference. First operand has 393 places, 374 transitions, 5018 flow. Second operand 11 states and 132 transitions. [2024-06-28 03:00:16,750 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 403 places, 390 transitions, 5882 flow [2024-06-28 03:00:17,651 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 393 places, 390 transitions, 5733 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-28 03:00:17,655 INFO L231 Difference]: Finished difference. Result has 395 places, 377 transitions, 5050 flow [2024-06-28 03:00:17,655 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4869, PETRI_DIFFERENCE_MINUEND_PLACES=383, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=374, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=320, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5050, PETRI_PLACES=395, PETRI_TRANSITIONS=377} [2024-06-28 03:00:17,655 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 364 predicate places. [2024-06-28 03:00:17,656 INFO L495 AbstractCegarLoop]: Abstraction has has 395 places, 377 transitions, 5050 flow [2024-06-28 03:00:17,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:00:17,656 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:00:17,656 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:00:17,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-28 03:00:17,656 INFO L420 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:00:17,656 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:00:17,656 INFO L85 PathProgramCache]: Analyzing trace with hash 1392740837, now seen corresponding path program 10 times [2024-06-28 03:00:17,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:00:17,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047113138] [2024-06-28 03:00:17,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:00:17,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:00:17,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:00:18,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:00:18,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:00:18,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047113138] [2024-06-28 03:00:18,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047113138] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:00:18,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:00:18,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:00:18,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868887910] [2024-06-28 03:00:18,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:00:18,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:00:18,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:00:18,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:00:18,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:00:18,671 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 03:00:18,671 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 395 places, 377 transitions, 5050 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:00:18,671 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:00:18,671 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 03:00:18,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:00:19,148 INFO L124 PetriNetUnfolderBase]: 733/1341 cut-off events. [2024-06-28 03:00:19,148 INFO L125 PetriNetUnfolderBase]: For 264997/264997 co-relation queries the response was YES. [2024-06-28 03:00:19,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13460 conditions, 1341 events. 733/1341 cut-off events. For 264997/264997 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 7503 event pairs, 39 based on Foata normal form. 2/1341 useless extension candidates. Maximal degree in co-relation 13275. Up to 800 conditions per place. [2024-06-28 03:00:19,167 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 258 selfloop transitions, 139 changer transitions 0/400 dead transitions. [2024-06-28 03:00:19,167 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 405 places, 400 transitions, 6707 flow [2024-06-28 03:00:19,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:00:19,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:00:19,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 146 transitions. [2024-06-28 03:00:19,168 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4147727272727273 [2024-06-28 03:00:19,168 INFO L175 Difference]: Start difference. First operand has 395 places, 377 transitions, 5050 flow. Second operand 11 states and 146 transitions. [2024-06-28 03:00:19,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 405 places, 400 transitions, 6707 flow [2024-06-28 03:00:20,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 397 places, 400 transitions, 6559 flow, removed 21 selfloop flow, removed 8 redundant places. [2024-06-28 03:00:20,263 INFO L231 Difference]: Finished difference. Result has 398 places, 384 transitions, 5469 flow [2024-06-28 03:00:20,263 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4902, PETRI_DIFFERENCE_MINUEND_PLACES=387, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=377, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=134, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5469, PETRI_PLACES=398, PETRI_TRANSITIONS=384} [2024-06-28 03:00:20,264 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 367 predicate places. [2024-06-28 03:00:20,264 INFO L495 AbstractCegarLoop]: Abstraction has has 398 places, 384 transitions, 5469 flow [2024-06-28 03:00:20,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:00:20,264 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:00:20,264 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:00:20,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-28 03:00:20,264 INFO L420 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:00:20,264 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:00:20,265 INFO L85 PathProgramCache]: Analyzing trace with hash 1156565477, now seen corresponding path program 11 times [2024-06-28 03:00:20,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:00:20,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055320176] [2024-06-28 03:00:20,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:00:20,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:00:20,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:00:21,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:00:21,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:00:21,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055320176] [2024-06-28 03:00:21,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055320176] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:00:21,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:00:21,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:00:21,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585408753] [2024-06-28 03:00:21,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:00:21,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:00:21,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:00:21,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:00:21,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:00:21,344 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 03:00:21,344 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 398 places, 384 transitions, 5469 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:00:21,344 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:00:21,344 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 03:00:21,345 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:00:21,904 INFO L124 PetriNetUnfolderBase]: 741/1354 cut-off events. [2024-06-28 03:00:21,904 INFO L125 PetriNetUnfolderBase]: For 271120/271120 co-relation queries the response was YES. [2024-06-28 03:00:21,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13967 conditions, 1354 events. 741/1354 cut-off events. For 271120/271120 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 7589 event pairs, 39 based on Foata normal form. 1/1353 useless extension candidates. Maximal degree in co-relation 13781. Up to 1129 conditions per place. [2024-06-28 03:00:21,919 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 333 selfloop transitions, 65 changer transitions 0/401 dead transitions. [2024-06-28 03:00:21,919 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 408 places, 401 transitions, 6683 flow [2024-06-28 03:00:21,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:00:21,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:00:21,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-28 03:00:21,920 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38920454545454547 [2024-06-28 03:00:21,920 INFO L175 Difference]: Start difference. First operand has 398 places, 384 transitions, 5469 flow. Second operand 11 states and 137 transitions. [2024-06-28 03:00:21,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 408 places, 401 transitions, 6683 flow [2024-06-28 03:00:22,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 402 places, 401 transitions, 6424 flow, removed 70 selfloop flow, removed 6 redundant places. [2024-06-28 03:00:22,907 INFO L231 Difference]: Finished difference. Result has 403 places, 388 transitions, 5485 flow [2024-06-28 03:00:22,908 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5210, PETRI_DIFFERENCE_MINUEND_PLACES=392, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=384, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=321, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5485, PETRI_PLACES=403, PETRI_TRANSITIONS=388} [2024-06-28 03:00:22,908 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 372 predicate places. [2024-06-28 03:00:22,908 INFO L495 AbstractCegarLoop]: Abstraction has has 403 places, 388 transitions, 5485 flow [2024-06-28 03:00:22,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:00:22,908 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:00:22,908 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:00:22,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-28 03:00:22,909 INFO L420 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:00:22,909 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:00:22,909 INFO L85 PathProgramCache]: Analyzing trace with hash 1384460117, now seen corresponding path program 12 times [2024-06-28 03:00:22,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:00:22,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630817154] [2024-06-28 03:00:22,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:00:22,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:00:22,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:00:23,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:00:23,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:00:23,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630817154] [2024-06-28 03:00:23,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630817154] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:00:23,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:00:23,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:00:23,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840470567] [2024-06-28 03:00:23,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:00:23,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:00:23,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:00:23,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:00:23,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:00:24,035 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 03:00:24,035 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 403 places, 388 transitions, 5485 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:00:24,035 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:00:24,035 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 03:00:24,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:00:24,586 INFO L124 PetriNetUnfolderBase]: 744/1363 cut-off events. [2024-06-28 03:00:24,586 INFO L125 PetriNetUnfolderBase]: For 274807/274807 co-relation queries the response was YES. [2024-06-28 03:00:24,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13934 conditions, 1363 events. 744/1363 cut-off events. For 274807/274807 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 7670 event pairs, 38 based on Foata normal form. 1/1362 useless extension candidates. Maximal degree in co-relation 13746. Up to 956 conditions per place. [2024-06-28 03:00:24,605 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 290 selfloop transitions, 114 changer transitions 0/407 dead transitions. [2024-06-28 03:00:24,605 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 413 places, 407 transitions, 7006 flow [2024-06-28 03:00:24,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:00:24,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:00:24,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 142 transitions. [2024-06-28 03:00:24,606 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4034090909090909 [2024-06-28 03:00:24,606 INFO L175 Difference]: Start difference. First operand has 403 places, 388 transitions, 5485 flow. Second operand 11 states and 142 transitions. [2024-06-28 03:00:24,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 413 places, 407 transitions, 7006 flow [2024-06-28 03:00:25,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 406 places, 407 transitions, 6868 flow, removed 30 selfloop flow, removed 7 redundant places. [2024-06-28 03:00:25,578 INFO L231 Difference]: Finished difference. Result has 408 places, 393 transitions, 5769 flow [2024-06-28 03:00:25,578 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5347, PETRI_DIFFERENCE_MINUEND_PLACES=396, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=388, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5769, PETRI_PLACES=408, PETRI_TRANSITIONS=393} [2024-06-28 03:00:25,578 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 377 predicate places. [2024-06-28 03:00:25,578 INFO L495 AbstractCegarLoop]: Abstraction has has 408 places, 393 transitions, 5769 flow [2024-06-28 03:00:25,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:00:25,578 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:00:25,579 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:00:25,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-28 03:00:25,579 INFO L420 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:00:25,579 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:00:25,579 INFO L85 PathProgramCache]: Analyzing trace with hash 1162821587, now seen corresponding path program 13 times [2024-06-28 03:00:25,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:00:25,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040218694] [2024-06-28 03:00:25,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:00:25,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:00:25,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:00:26,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:00:26,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:00:26,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040218694] [2024-06-28 03:00:26,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040218694] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:00:26,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:00:26,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:00:26,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345627349] [2024-06-28 03:00:26,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:00:26,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:00:26,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:00:26,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:00:26,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:00:26,792 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 03:00:26,792 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 408 places, 393 transitions, 5769 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:00:26,792 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:00:26,792 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 03:00:26,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:00:27,318 INFO L124 PetriNetUnfolderBase]: 747/1368 cut-off events. [2024-06-28 03:00:27,318 INFO L125 PetriNetUnfolderBase]: For 279410/279410 co-relation queries the response was YES. [2024-06-28 03:00:27,331 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14232 conditions, 1368 events. 747/1368 cut-off events. For 279410/279410 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 7693 event pairs, 38 based on Foata normal form. 1/1367 useless extension candidates. Maximal degree in co-relation 14041. Up to 1109 conditions per place. [2024-06-28 03:00:27,336 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 331 selfloop transitions, 75 changer transitions 0/409 dead transitions. [2024-06-28 03:00:27,336 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 418 places, 409 transitions, 7201 flow [2024-06-28 03:00:27,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:00:27,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:00:27,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 143 transitions. [2024-06-28 03:00:27,336 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-28 03:00:27,337 INFO L175 Difference]: Start difference. First operand has 408 places, 393 transitions, 5769 flow. Second operand 11 states and 143 transitions. [2024-06-28 03:00:27,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 418 places, 409 transitions, 7201 flow [2024-06-28 03:00:28,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 408 places, 409 transitions, 6739 flow, removed 71 selfloop flow, removed 10 redundant places. [2024-06-28 03:00:28,382 INFO L231 Difference]: Finished difference. Result has 409 places, 395 transitions, 5538 flow [2024-06-28 03:00:28,382 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5309, PETRI_DIFFERENCE_MINUEND_PLACES=398, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=393, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=320, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5538, PETRI_PLACES=409, PETRI_TRANSITIONS=395} [2024-06-28 03:00:28,382 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 378 predicate places. [2024-06-28 03:00:28,382 INFO L495 AbstractCegarLoop]: Abstraction has has 409 places, 395 transitions, 5538 flow [2024-06-28 03:00:28,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:00:28,383 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:00:28,383 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:00:28,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-28 03:00:28,383 INFO L420 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:00:28,383 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:00:28,383 INFO L85 PathProgramCache]: Analyzing trace with hash 1133774083, now seen corresponding path program 4 times [2024-06-28 03:00:28,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:00:28,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645102760] [2024-06-28 03:00:28,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:00:28,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:00:28,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:00:29,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:00:29,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:00:29,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645102760] [2024-06-28 03:00:29,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645102760] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:00:29,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:00:29,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:00:29,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2869922] [2024-06-28 03:00:29,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:00:29,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:00:29,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:00:29,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:00:29,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:00:29,960 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 03:00:29,960 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 409 places, 395 transitions, 5538 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:00:29,960 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:00:29,960 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 03:00:29,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:00:30,480 INFO L124 PetriNetUnfolderBase]: 751/1376 cut-off events. [2024-06-28 03:00:30,481 INFO L125 PetriNetUnfolderBase]: For 290996/290996 co-relation queries the response was YES. [2024-06-28 03:00:30,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14000 conditions, 1376 events. 751/1376 cut-off events. For 290996/290996 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 7795 event pairs, 38 based on Foata normal form. 2/1376 useless extension candidates. Maximal degree in co-relation 13810. Up to 1171 conditions per place. [2024-06-28 03:00:30,501 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 339 selfloop transitions, 67 changer transitions 0/409 dead transitions. [2024-06-28 03:00:30,501 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 419 places, 409 transitions, 6424 flow [2024-06-28 03:00:30,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:00:30,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:00:30,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-28 03:00:30,502 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3778409090909091 [2024-06-28 03:00:30,502 INFO L175 Difference]: Start difference. First operand has 409 places, 395 transitions, 5538 flow. Second operand 11 states and 133 transitions. [2024-06-28 03:00:30,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 419 places, 409 transitions, 6424 flow [2024-06-28 03:00:31,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 409 places, 409 transitions, 6135 flow, removed 44 selfloop flow, removed 10 redundant places. [2024-06-28 03:00:31,642 INFO L231 Difference]: Finished difference. Result has 410 places, 396 transitions, 5433 flow [2024-06-28 03:00:31,642 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5249, PETRI_DIFFERENCE_MINUEND_PLACES=399, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=395, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=328, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5433, PETRI_PLACES=410, PETRI_TRANSITIONS=396} [2024-06-28 03:00:31,642 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 379 predicate places. [2024-06-28 03:00:31,642 INFO L495 AbstractCegarLoop]: Abstraction has has 410 places, 396 transitions, 5433 flow [2024-06-28 03:00:31,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:00:31,642 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:00:31,642 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:00:31,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-28 03:00:31,642 INFO L420 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:00:31,643 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:00:31,643 INFO L85 PathProgramCache]: Analyzing trace with hash 1133784313, now seen corresponding path program 5 times [2024-06-28 03:00:31,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:00:31,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650782874] [2024-06-28 03:00:31,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:00:31,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:00:31,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:00:33,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:00:33,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:00:33,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650782874] [2024-06-28 03:00:33,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650782874] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:00:33,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:00:33,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:00:33,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132312138] [2024-06-28 03:00:33,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:00:33,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:00:33,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:00:33,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:00:33,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:00:33,147 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 03:00:33,147 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 410 places, 396 transitions, 5433 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:00:33,147 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:00:33,147 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 03:00:33,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:00:33,626 INFO L124 PetriNetUnfolderBase]: 762/1395 cut-off events. [2024-06-28 03:00:33,626 INFO L125 PetriNetUnfolderBase]: For 313508/313508 co-relation queries the response was YES. [2024-06-28 03:00:33,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14354 conditions, 1395 events. 762/1395 cut-off events. For 313508/313508 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 7878 event pairs, 37 based on Foata normal form. 2/1395 useless extension candidates. Maximal degree in co-relation 14164. Up to 1147 conditions per place. [2024-06-28 03:00:33,645 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 338 selfloop transitions, 72 changer transitions 0/413 dead transitions. [2024-06-28 03:00:33,645 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 420 places, 413 transitions, 6639 flow [2024-06-28 03:00:33,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:00:33,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:00:33,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-28 03:00:33,646 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835227272727273 [2024-06-28 03:00:33,646 INFO L175 Difference]: Start difference. First operand has 410 places, 396 transitions, 5433 flow. Second operand 11 states and 135 transitions. [2024-06-28 03:00:33,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 420 places, 413 transitions, 6639 flow [2024-06-28 03:00:34,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 409 places, 413 transitions, 6412 flow, removed 24 selfloop flow, removed 11 redundant places. [2024-06-28 03:00:34,660 INFO L231 Difference]: Finished difference. Result has 410 places, 398 transitions, 5448 flow [2024-06-28 03:00:34,660 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5206, PETRI_DIFFERENCE_MINUEND_PLACES=399, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=396, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=325, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5448, PETRI_PLACES=410, PETRI_TRANSITIONS=398} [2024-06-28 03:00:34,660 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 379 predicate places. [2024-06-28 03:00:34,660 INFO L495 AbstractCegarLoop]: Abstraction has has 410 places, 398 transitions, 5448 flow [2024-06-28 03:00:34,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:00:34,660 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:00:34,660 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:00:34,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-28 03:00:34,660 INFO L420 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:00:34,661 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:00:34,661 INFO L85 PathProgramCache]: Analyzing trace with hash 1125202645, now seen corresponding path program 14 times [2024-06-28 03:00:34,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:00:34,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795070117] [2024-06-28 03:00:34,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:00:34,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:00:34,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:00:35,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:00:35,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:00:35,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795070117] [2024-06-28 03:00:35,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795070117] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:00:35,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:00:35,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:00:35,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460516073] [2024-06-28 03:00:35,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:00:35,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:00:35,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:00:35,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:00:35,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:00:35,865 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 03:00:35,866 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 410 places, 398 transitions, 5448 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:00:35,866 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:00:35,866 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 03:00:35,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:00:36,491 INFO L124 PetriNetUnfolderBase]: 921/1689 cut-off events. [2024-06-28 03:00:36,492 INFO L125 PetriNetUnfolderBase]: For 336477/336477 co-relation queries the response was YES. [2024-06-28 03:00:36,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16636 conditions, 1689 events. 921/1689 cut-off events. For 336477/336477 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 10136 event pairs, 44 based on Foata normal form. 1/1685 useless extension candidates. Maximal degree in co-relation 16447. Up to 1340 conditions per place. [2024-06-28 03:00:36,515 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 406 selfloop transitions, 99 changer transitions 0/508 dead transitions. [2024-06-28 03:00:36,515 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 421 places, 508 transitions, 8215 flow [2024-06-28 03:00:36,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:00:36,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:00:36,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 155 transitions. [2024-06-28 03:00:36,515 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4036458333333333 [2024-06-28 03:00:36,516 INFO L175 Difference]: Start difference. First operand has 410 places, 398 transitions, 5448 flow. Second operand 12 states and 155 transitions. [2024-06-28 03:00:36,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 421 places, 508 transitions, 8215 flow [2024-06-28 03:00:37,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 414 places, 508 transitions, 8045 flow, removed 29 selfloop flow, removed 7 redundant places. [2024-06-28 03:00:37,640 INFO L231 Difference]: Finished difference. Result has 419 places, 462 transitions, 6522 flow [2024-06-28 03:00:37,640 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5297, PETRI_DIFFERENCE_MINUEND_PLACES=403, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=398, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=302, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6522, PETRI_PLACES=419, PETRI_TRANSITIONS=462} [2024-06-28 03:00:37,640 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 388 predicate places. [2024-06-28 03:00:37,640 INFO L495 AbstractCegarLoop]: Abstraction has has 419 places, 462 transitions, 6522 flow [2024-06-28 03:00:37,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:00:37,640 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:00:37,640 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:00:37,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-28 03:00:37,641 INFO L420 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:00:37,641 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:00:37,641 INFO L85 PathProgramCache]: Analyzing trace with hash 1384697267, now seen corresponding path program 15 times [2024-06-28 03:00:37,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:00:37,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3148654] [2024-06-28 03:00:37,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:00:37,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:00:37,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:00:38,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:00:38,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:00:38,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3148654] [2024-06-28 03:00:38,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3148654] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:00:38,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:00:38,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:00:38,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458092047] [2024-06-28 03:00:38,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:00:38,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:00:38,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:00:38,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:00:38,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:00:38,690 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 03:00:38,690 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 419 places, 462 transitions, 6522 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:00:38,690 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:00:38,690 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 03:00:38,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:00:39,312 INFO L124 PetriNetUnfolderBase]: 935/1718 cut-off events. [2024-06-28 03:00:39,312 INFO L125 PetriNetUnfolderBase]: For 368980/368980 co-relation queries the response was YES. [2024-06-28 03:00:39,331 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17497 conditions, 1718 events. 935/1718 cut-off events. For 368980/368980 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 10334 event pairs, 41 based on Foata normal form. 3/1719 useless extension candidates. Maximal degree in co-relation 17302. Up to 914 conditions per place. [2024-06-28 03:00:39,337 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 315 selfloop transitions, 171 changer transitions 0/489 dead transitions. [2024-06-28 03:00:39,337 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 429 places, 489 transitions, 8921 flow [2024-06-28 03:00:39,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:00:39,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:00:39,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 152 transitions. [2024-06-28 03:00:39,338 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4318181818181818 [2024-06-28 03:00:39,338 INFO L175 Difference]: Start difference. First operand has 419 places, 462 transitions, 6522 flow. Second operand 11 states and 152 transitions. [2024-06-28 03:00:39,338 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 429 places, 489 transitions, 8921 flow [2024-06-28 03:00:40,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 422 places, 489 transitions, 8764 flow, removed 54 selfloop flow, removed 7 redundant places. [2024-06-28 03:00:40,681 INFO L231 Difference]: Finished difference. Result has 423 places, 470 transitions, 7029 flow [2024-06-28 03:00:40,681 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6365, PETRI_DIFFERENCE_MINUEND_PLACES=412, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=462, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=163, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7029, PETRI_PLACES=423, PETRI_TRANSITIONS=470} [2024-06-28 03:00:40,681 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 392 predicate places. [2024-06-28 03:00:40,681 INFO L495 AbstractCegarLoop]: Abstraction has has 423 places, 470 transitions, 7029 flow [2024-06-28 03:00:40,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:00:40,681 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:00:40,681 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:00:40,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-28 03:00:40,681 INFO L420 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:00:40,682 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:00:40,682 INFO L85 PathProgramCache]: Analyzing trace with hash 1156558967, now seen corresponding path program 16 times [2024-06-28 03:00:40,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:00:40,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551394645] [2024-06-28 03:00:40,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:00:40,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:00:40,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:00:41,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:00:41,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:00:41,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551394645] [2024-06-28 03:00:41,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551394645] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:00:41,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:00:41,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:00:41,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645467198] [2024-06-28 03:00:41,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:00:41,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:00:41,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:00:41,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:00:41,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:00:42,019 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 03:00:42,020 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 423 places, 470 transitions, 7029 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:00:42,020 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:00:42,020 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 03:00:42,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:00:42,736 INFO L124 PetriNetUnfolderBase]: 931/1712 cut-off events. [2024-06-28 03:00:42,736 INFO L125 PetriNetUnfolderBase]: For 349494/349494 co-relation queries the response was YES. [2024-06-28 03:00:42,757 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17444 conditions, 1712 events. 931/1712 cut-off events. For 349494/349494 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 10301 event pairs, 41 based on Foata normal form. 2/1712 useless extension candidates. Maximal degree in co-relation 17249. Up to 1433 conditions per place. [2024-06-28 03:00:42,763 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 406 selfloop transitions, 73 changer transitions 0/482 dead transitions. [2024-06-28 03:00:42,763 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 433 places, 482 transitions, 8015 flow [2024-06-28 03:00:42,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:00:42,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:00:42,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-28 03:00:42,764 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38920454545454547 [2024-06-28 03:00:42,764 INFO L175 Difference]: Start difference. First operand has 423 places, 470 transitions, 7029 flow. Second operand 11 states and 137 transitions. [2024-06-28 03:00:42,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 433 places, 482 transitions, 8015 flow [2024-06-28 03:00:44,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 427 places, 482 transitions, 7563 flow, removed 125 selfloop flow, removed 6 redundant places. [2024-06-28 03:00:44,010 INFO L231 Difference]: Finished difference. Result has 428 places, 470 transitions, 6730 flow [2024-06-28 03:00:44,010 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6577, PETRI_DIFFERENCE_MINUEND_PLACES=417, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=470, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=397, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6730, PETRI_PLACES=428, PETRI_TRANSITIONS=470} [2024-06-28 03:00:44,010 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 397 predicate places. [2024-06-28 03:00:44,010 INFO L495 AbstractCegarLoop]: Abstraction has has 428 places, 470 transitions, 6730 flow [2024-06-28 03:00:44,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:00:44,010 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:00:44,010 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:00:44,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-28 03:00:44,011 INFO L420 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:00:44,011 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:00:44,011 INFO L85 PathProgramCache]: Analyzing trace with hash 1162815077, now seen corresponding path program 17 times [2024-06-28 03:00:44,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:00:44,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926840668] [2024-06-28 03:00:44,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:00:44,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:00:44,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:00:45,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:00:45,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:00:45,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926840668] [2024-06-28 03:00:45,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926840668] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:00:45,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:00:45,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:00:45,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125100530] [2024-06-28 03:00:45,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:00:45,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:00:45,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:00:45,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:00:45,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:00:45,322 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 03:00:45,323 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 428 places, 470 transitions, 6730 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:00:45,323 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:00:45,323 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 03:00:45,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:00:46,002 INFO L124 PetriNetUnfolderBase]: 927/1704 cut-off events. [2024-06-28 03:00:46,003 INFO L125 PetriNetUnfolderBase]: For 333464/333464 co-relation queries the response was YES. [2024-06-28 03:00:46,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16730 conditions, 1704 events. 927/1704 cut-off events. For 333464/333464 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 10245 event pairs, 41 based on Foata normal form. 2/1704 useless extension candidates. Maximal degree in co-relation 16534. Up to 1373 conditions per place. [2024-06-28 03:00:46,027 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 385 selfloop transitions, 94 changer transitions 0/482 dead transitions. [2024-06-28 03:00:46,028 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 438 places, 482 transitions, 7716 flow [2024-06-28 03:00:46,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:00:46,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:00:46,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 140 transitions. [2024-06-28 03:00:46,028 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3977272727272727 [2024-06-28 03:00:46,029 INFO L175 Difference]: Start difference. First operand has 428 places, 470 transitions, 6730 flow. Second operand 11 states and 140 transitions. [2024-06-28 03:00:46,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 438 places, 482 transitions, 7716 flow [2024-06-28 03:00:47,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 428 places, 482 transitions, 7434 flow, removed 65 selfloop flow, removed 10 redundant places. [2024-06-28 03:00:47,204 INFO L231 Difference]: Finished difference. Result has 429 places, 470 transitions, 6643 flow [2024-06-28 03:00:47,204 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6448, PETRI_DIFFERENCE_MINUEND_PLACES=418, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=470, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=376, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6643, PETRI_PLACES=429, PETRI_TRANSITIONS=470} [2024-06-28 03:00:47,204 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 398 predicate places. [2024-06-28 03:00:47,204 INFO L495 AbstractCegarLoop]: Abstraction has has 429 places, 470 transitions, 6643 flow [2024-06-28 03:00:47,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:00:47,204 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:00:47,204 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:00:47,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-28 03:00:47,204 INFO L420 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:00:47,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:00:47,205 INFO L85 PathProgramCache]: Analyzing trace with hash 1163052475, now seen corresponding path program 5 times [2024-06-28 03:00:47,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:00:47,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982221671] [2024-06-28 03:00:47,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:00:47,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:00:47,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:00:48,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:00:48,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:00:48,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982221671] [2024-06-28 03:00:48,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982221671] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:00:48,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:00:48,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:00:48,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646697946] [2024-06-28 03:00:48,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:00:48,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:00:48,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:00:48,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:00:48,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:00:48,485 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 03:00:48,486 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 429 places, 470 transitions, 6643 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:00:48,486 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:00:48,486 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 03:00:48,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:00:49,064 INFO L124 PetriNetUnfolderBase]: 925/1701 cut-off events. [2024-06-28 03:00:49,064 INFO L125 PetriNetUnfolderBase]: For 319139/319139 co-relation queries the response was YES. [2024-06-28 03:00:49,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16516 conditions, 1701 events. 925/1701 cut-off events. For 319139/319139 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 10227 event pairs, 41 based on Foata normal form. 1/1700 useless extension candidates. Maximal degree in co-relation 16319. Up to 1386 conditions per place. [2024-06-28 03:00:49,089 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 406 selfloop transitions, 74 changer transitions 0/483 dead transitions. [2024-06-28 03:00:49,089 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 439 places, 483 transitions, 7635 flow [2024-06-28 03:00:49,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:00:49,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:00:49,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 140 transitions. [2024-06-28 03:00:49,091 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3977272727272727 [2024-06-28 03:00:49,091 INFO L175 Difference]: Start difference. First operand has 429 places, 470 transitions, 6643 flow. Second operand 11 states and 140 transitions. [2024-06-28 03:00:49,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 439 places, 483 transitions, 7635 flow [2024-06-28 03:00:50,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 431 places, 483 transitions, 7417 flow, removed 22 selfloop flow, removed 8 redundant places. [2024-06-28 03:00:50,293 INFO L231 Difference]: Finished difference. Result has 432 places, 470 transitions, 6579 flow [2024-06-28 03:00:50,293 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6425, PETRI_DIFFERENCE_MINUEND_PLACES=421, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=470, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=396, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6579, PETRI_PLACES=432, PETRI_TRANSITIONS=470} [2024-06-28 03:00:50,294 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 401 predicate places. [2024-06-28 03:00:50,294 INFO L495 AbstractCegarLoop]: Abstraction has has 432 places, 470 transitions, 6579 flow [2024-06-28 03:00:50,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:00:50,294 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:00:50,294 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:00:50,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-28 03:00:50,294 INFO L420 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:00:50,295 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:00:50,295 INFO L85 PathProgramCache]: Analyzing trace with hash 1163061155, now seen corresponding path program 6 times [2024-06-28 03:00:50,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:00:50,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15947181] [2024-06-28 03:00:50,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:00:50,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:00:50,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:00:51,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:00:51,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:00:51,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15947181] [2024-06-28 03:00:51,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15947181] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:00:51,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:00:51,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:00:51,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846827145] [2024-06-28 03:00:51,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:00:51,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:00:51,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:00:51,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:00:51,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:00:51,724 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 03:00:51,724 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 432 places, 470 transitions, 6579 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:00:51,724 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:00:51,725 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 03:00:51,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:00:52,335 INFO L124 PetriNetUnfolderBase]: 922/1696 cut-off events. [2024-06-28 03:00:52,336 INFO L125 PetriNetUnfolderBase]: For 313883/313883 co-relation queries the response was YES. [2024-06-28 03:00:52,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16177 conditions, 1696 events. 922/1696 cut-off events. For 313883/313883 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 10193 event pairs, 45 based on Foata normal form. 2/1696 useless extension candidates. Maximal degree in co-relation 15979. Up to 1509 conditions per place. [2024-06-28 03:00:52,360 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 444 selfloop transitions, 36 changer transitions 0/483 dead transitions. [2024-06-28 03:00:52,360 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 442 places, 483 transitions, 7569 flow [2024-06-28 03:00:52,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:00:52,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:00:52,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-28 03:00:52,361 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3693181818181818 [2024-06-28 03:00:52,361 INFO L175 Difference]: Start difference. First operand has 432 places, 470 transitions, 6579 flow. Second operand 11 states and 130 transitions. [2024-06-28 03:00:52,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 442 places, 483 transitions, 7569 flow [2024-06-28 03:00:53,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 432 places, 483 transitions, 7393 flow, removed 11 selfloop flow, removed 10 redundant places. [2024-06-28 03:00:53,670 INFO L231 Difference]: Finished difference. Result has 433 places, 470 transitions, 6479 flow [2024-06-28 03:00:53,670 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6403, PETRI_DIFFERENCE_MINUEND_PLACES=422, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=470, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=434, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6479, PETRI_PLACES=433, PETRI_TRANSITIONS=470} [2024-06-28 03:00:53,675 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 402 predicate places. [2024-06-28 03:00:53,676 INFO L495 AbstractCegarLoop]: Abstraction has has 433 places, 470 transitions, 6479 flow [2024-06-28 03:00:53,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:00:53,676 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:00:53,676 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:00:53,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-28 03:00:53,676 INFO L420 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:00:53,676 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:00:53,676 INFO L85 PathProgramCache]: Analyzing trace with hash -1558136477, now seen corresponding path program 6 times [2024-06-28 03:00:53,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:00:53,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806342713] [2024-06-28 03:00:53,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:00:53,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:00:53,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:00:54,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:00:54,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:00:54,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806342713] [2024-06-28 03:00:54,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806342713] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:00:54,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:00:54,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:00:54,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684304033] [2024-06-28 03:00:54,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:00:54,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:00:54,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:00:54,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:00:54,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:00:54,578 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 03:00:54,578 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 433 places, 470 transitions, 6479 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:00:54,579 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:00:54,579 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 03:00:54,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:00:55,113 INFO L124 PetriNetUnfolderBase]: 919/1691 cut-off events. [2024-06-28 03:00:55,113 INFO L125 PetriNetUnfolderBase]: For 298814/298814 co-relation queries the response was YES. [2024-06-28 03:00:55,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15753 conditions, 1691 events. 919/1691 cut-off events. For 298814/298814 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 10177 event pairs, 48 based on Foata normal form. 2/1688 useless extension candidates. Maximal degree in co-relation 15554. Up to 1435 conditions per place. [2024-06-28 03:00:55,136 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 419 selfloop transitions, 59 changer transitions 0/481 dead transitions. [2024-06-28 03:00:55,137 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 442 places, 481 transitions, 7471 flow [2024-06-28 03:00:55,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:00:55,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:00:55,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 122 transitions. [2024-06-28 03:00:55,137 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38125 [2024-06-28 03:00:55,137 INFO L175 Difference]: Start difference. First operand has 433 places, 470 transitions, 6479 flow. Second operand 10 states and 122 transitions. [2024-06-28 03:00:55,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 442 places, 481 transitions, 7471 flow [2024-06-28 03:00:56,394 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 432 places, 481 transitions, 7379 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-28 03:00:56,400 INFO L231 Difference]: Finished difference. Result has 433 places, 471 transitions, 6523 flow [2024-06-28 03:00:56,400 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6387, PETRI_DIFFERENCE_MINUEND_PLACES=423, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=470, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=412, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6523, PETRI_PLACES=433, PETRI_TRANSITIONS=471} [2024-06-28 03:00:56,400 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 402 predicate places. [2024-06-28 03:00:56,400 INFO L495 AbstractCegarLoop]: Abstraction has has 433 places, 471 transitions, 6523 flow [2024-06-28 03:00:56,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:00:56,400 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:00:56,400 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:00:56,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-28 03:00:56,401 INFO L420 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:00:56,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:00:56,401 INFO L85 PathProgramCache]: Analyzing trace with hash -1557958537, now seen corresponding path program 18 times [2024-06-28 03:00:56,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:00:56,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102135038] [2024-06-28 03:00:56,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:00:56,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:00:56,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:00:57,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:00:57,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:00:57,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102135038] [2024-06-28 03:00:57,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102135038] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:00:57,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:00:57,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:00:57,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8107346] [2024-06-28 03:00:57,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:00:57,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:00:57,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:00:57,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:00:57,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:00:57,749 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 03:00:57,749 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 433 places, 471 transitions, 6523 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:00:57,749 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:00:57,749 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 03:00:57,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:00:58,418 INFO L124 PetriNetUnfolderBase]: 927/1708 cut-off events. [2024-06-28 03:00:58,419 INFO L125 PetriNetUnfolderBase]: For 305070/305070 co-relation queries the response was YES. [2024-06-28 03:00:58,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16175 conditions, 1708 events. 927/1708 cut-off events. For 305070/305070 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 10339 event pairs, 48 based on Foata normal form. 1/1704 useless extension candidates. Maximal degree in co-relation 15975. Up to 1432 conditions per place. [2024-06-28 03:00:58,440 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 416 selfloop transitions, 68 changer transitions 0/487 dead transitions. [2024-06-28 03:00:58,440 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 443 places, 487 transitions, 7977 flow [2024-06-28 03:00:58,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:00:58,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:00:58,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-28 03:00:58,441 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38920454545454547 [2024-06-28 03:00:58,441 INFO L175 Difference]: Start difference. First operand has 433 places, 471 transitions, 6523 flow. Second operand 11 states and 137 transitions. [2024-06-28 03:00:58,441 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 443 places, 487 transitions, 7977 flow [2024-06-28 03:00:59,657 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 434 places, 487 transitions, 7776 flow, removed 17 selfloop flow, removed 9 redundant places. [2024-06-28 03:00:59,662 INFO L231 Difference]: Finished difference. Result has 436 places, 476 transitions, 6662 flow [2024-06-28 03:00:59,663 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6322, PETRI_DIFFERENCE_MINUEND_PLACES=424, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=471, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=405, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6662, PETRI_PLACES=436, PETRI_TRANSITIONS=476} [2024-06-28 03:00:59,663 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 405 predicate places. [2024-06-28 03:00:59,663 INFO L495 AbstractCegarLoop]: Abstraction has has 436 places, 476 transitions, 6662 flow [2024-06-28 03:00:59,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:00:59,663 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:00:59,663 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:00:59,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-28 03:00:59,663 INFO L420 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:00:59,663 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:00:59,663 INFO L85 PathProgramCache]: Analyzing trace with hash -1941652241, now seen corresponding path program 19 times [2024-06-28 03:00:59,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:00:59,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512897874] [2024-06-28 03:00:59,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:00:59,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:00:59,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:01:00,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:01:00,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:01:00,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512897874] [2024-06-28 03:01:00,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512897874] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:01:00,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:01:00,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:01:00,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594831778] [2024-06-28 03:01:00,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:01:00,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:01:00,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:01:00,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:01:00,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:01:01,002 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 03:01:01,002 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 436 places, 476 transitions, 6662 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:01:01,002 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:01:01,002 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 03:01:01,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:01:01,622 INFO L124 PetriNetUnfolderBase]: 930/1717 cut-off events. [2024-06-28 03:01:01,623 INFO L125 PetriNetUnfolderBase]: For 311301/311301 co-relation queries the response was YES. [2024-06-28 03:01:01,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16282 conditions, 1717 events. 930/1717 cut-off events. For 311301/311301 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 10410 event pairs, 109 based on Foata normal form. 1/1716 useless extension candidates. Maximal degree in co-relation 16080. Up to 1572 conditions per place. [2024-06-28 03:01:01,648 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 467 selfloop transitions, 19 changer transitions 0/489 dead transitions. [2024-06-28 03:01:01,649 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 446 places, 489 transitions, 7753 flow [2024-06-28 03:01:01,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:01:01,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:01:01,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-06-28 03:01:01,649 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35511363636363635 [2024-06-28 03:01:01,649 INFO L175 Difference]: Start difference. First operand has 436 places, 476 transitions, 6662 flow. Second operand 11 states and 125 transitions. [2024-06-28 03:01:01,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 446 places, 489 transitions, 7753 flow [2024-06-28 03:01:02,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 438 places, 489 transitions, 7501 flow, removed 60 selfloop flow, removed 8 redundant places. [2024-06-28 03:01:02,987 INFO L231 Difference]: Finished difference. Result has 440 places, 479 transitions, 6559 flow [2024-06-28 03:01:02,987 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6412, PETRI_DIFFERENCE_MINUEND_PLACES=428, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=476, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=457, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6559, PETRI_PLACES=440, PETRI_TRANSITIONS=479} [2024-06-28 03:01:02,987 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 409 predicate places. [2024-06-28 03:01:02,987 INFO L495 AbstractCegarLoop]: Abstraction has has 440 places, 479 transitions, 6559 flow [2024-06-28 03:01:02,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:01:02,987 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:01:02,987 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:01:02,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-28 03:01:02,988 INFO L420 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:01:02,988 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:01:02,988 INFO L85 PathProgramCache]: Analyzing trace with hash -1551465277, now seen corresponding path program 20 times [2024-06-28 03:01:02,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:01:02,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488631944] [2024-06-28 03:01:02,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:01:02,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:01:02,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:01:04,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:01:04,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:01:04,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488631944] [2024-06-28 03:01:04,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488631944] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:01:04,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:01:04,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:01:04,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288182394] [2024-06-28 03:01:04,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:01:04,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:01:04,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:01:04,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:01:04,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:01:04,181 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 03:01:04,181 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 440 places, 479 transitions, 6559 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:01:04,181 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:01:04,181 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 03:01:04,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:01:04,818 INFO L124 PetriNetUnfolderBase]: 951/1753 cut-off events. [2024-06-28 03:01:04,818 INFO L125 PetriNetUnfolderBase]: For 354525/354525 co-relation queries the response was YES. [2024-06-28 03:01:04,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17117 conditions, 1753 events. 951/1753 cut-off events. For 354525/354525 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 10662 event pairs, 47 based on Foata normal form. 2/1750 useless extension candidates. Maximal degree in co-relation 16914. Up to 1406 conditions per place. [2024-06-28 03:01:04,843 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 414 selfloop transitions, 83 changer transitions 0/500 dead transitions. [2024-06-28 03:01:04,843 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 450 places, 500 transitions, 8475 flow [2024-06-28 03:01:04,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:01:04,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:01:04,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 144 transitions. [2024-06-28 03:01:04,844 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-06-28 03:01:04,844 INFO L175 Difference]: Start difference. First operand has 440 places, 479 transitions, 6559 flow. Second operand 11 states and 144 transitions. [2024-06-28 03:01:04,844 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 450 places, 500 transitions, 8475 flow [2024-06-28 03:01:06,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 441 places, 500 transitions, 8343 flow, removed 43 selfloop flow, removed 9 redundant places. [2024-06-28 03:01:06,254 INFO L231 Difference]: Finished difference. Result has 442 places, 486 transitions, 6894 flow [2024-06-28 03:01:06,255 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6427, PETRI_DIFFERENCE_MINUEND_PLACES=431, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=479, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=400, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6894, PETRI_PLACES=442, PETRI_TRANSITIONS=486} [2024-06-28 03:01:06,255 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 411 predicate places. [2024-06-28 03:01:06,255 INFO L495 AbstractCegarLoop]: Abstraction has has 442 places, 486 transitions, 6894 flow [2024-06-28 03:01:06,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:01:06,255 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:01:06,255 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:01:06,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-06-28 03:01:06,255 INFO L420 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:01:06,255 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:01:06,255 INFO L85 PathProgramCache]: Analyzing trace with hash -1083958075, now seen corresponding path program 7 times [2024-06-28 03:01:06,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:01:06,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194456267] [2024-06-28 03:01:06,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:01:06,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:01:06,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:01:07,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:01:07,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:01:07,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194456267] [2024-06-28 03:01:07,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194456267] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:01:07,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:01:07,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:01:07,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455671200] [2024-06-28 03:01:07,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:01:07,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:01:07,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:01:07,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:01:07,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:01:07,523 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 03:01:07,523 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 442 places, 486 transitions, 6894 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:01:07,523 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:01:07,523 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 03:01:07,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:01:08,111 INFO L124 PetriNetUnfolderBase]: 955/1765 cut-off events. [2024-06-28 03:01:08,111 INFO L125 PetriNetUnfolderBase]: For 360106/360106 co-relation queries the response was YES. [2024-06-28 03:01:08,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17357 conditions, 1765 events. 955/1765 cut-off events. For 360106/360106 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 10793 event pairs, 110 based on Foata normal form. 2/1765 useless extension candidates. Maximal degree in co-relation 17153. Up to 1598 conditions per place. [2024-06-28 03:01:08,137 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 473 selfloop transitions, 21 changer transitions 0/497 dead transitions. [2024-06-28 03:01:08,137 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 451 places, 497 transitions, 7950 flow [2024-06-28 03:01:08,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:01:08,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:01:08,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 118 transitions. [2024-06-28 03:01:08,138 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36875 [2024-06-28 03:01:08,138 INFO L175 Difference]: Start difference. First operand has 442 places, 486 transitions, 6894 flow. Second operand 10 states and 118 transitions. [2024-06-28 03:01:08,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 451 places, 497 transitions, 7950 flow [2024-06-28 03:01:09,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 445 places, 497 transitions, 7722 flow, removed 74 selfloop flow, removed 6 redundant places. [2024-06-28 03:01:09,584 INFO L231 Difference]: Finished difference. Result has 446 places, 487 transitions, 6760 flow [2024-06-28 03:01:09,584 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6666, PETRI_DIFFERENCE_MINUEND_PLACES=436, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=486, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=465, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6760, PETRI_PLACES=446, PETRI_TRANSITIONS=487} [2024-06-28 03:01:09,584 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 415 predicate places. [2024-06-28 03:01:09,584 INFO L495 AbstractCegarLoop]: Abstraction has has 446 places, 487 transitions, 6760 flow [2024-06-28 03:01:09,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:01:09,584 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:01:09,584 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:01:09,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-06-28 03:01:09,585 INFO L420 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:01:09,585 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:01:09,585 INFO L85 PathProgramCache]: Analyzing trace with hash -1557952027, now seen corresponding path program 21 times [2024-06-28 03:01:09,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:01:09,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105472868] [2024-06-28 03:01:09,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:01:09,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:01:09,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:01:10,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:01:10,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:01:10,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105472868] [2024-06-28 03:01:10,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105472868] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:01:10,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:01:10,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:01:10,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546259008] [2024-06-28 03:01:10,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:01:10,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:01:10,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:01:10,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:01:10,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:01:10,748 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 03:01:10,748 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 446 places, 487 transitions, 6760 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:01:10,748 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:01:10,748 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 03:01:10,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:01:11,390 INFO L124 PetriNetUnfolderBase]: 961/1773 cut-off events. [2024-06-28 03:01:11,390 INFO L125 PetriNetUnfolderBase]: For 363235/363235 co-relation queries the response was YES. [2024-06-28 03:01:11,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17356 conditions, 1773 events. 961/1773 cut-off events. For 363235/363235 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 10809 event pairs, 49 based on Foata normal form. 2/1770 useless extension candidates. Maximal degree in co-relation 17150. Up to 1475 conditions per place. [2024-06-28 03:01:11,414 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 426 selfloop transitions, 73 changer transitions 0/502 dead transitions. [2024-06-28 03:01:11,414 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 456 places, 502 transitions, 8222 flow [2024-06-28 03:01:11,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:01:11,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:01:11,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2024-06-28 03:01:11,415 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39204545454545453 [2024-06-28 03:01:11,415 INFO L175 Difference]: Start difference. First operand has 446 places, 487 transitions, 6760 flow. Second operand 11 states and 138 transitions. [2024-06-28 03:01:11,415 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 456 places, 502 transitions, 8222 flow [2024-06-28 03:01:12,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 448 places, 502 transitions, 8084 flow, removed 49 selfloop flow, removed 8 redundant places. [2024-06-28 03:01:12,900 INFO L231 Difference]: Finished difference. Result has 449 places, 491 transitions, 6936 flow [2024-06-28 03:01:12,900 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6622, PETRI_DIFFERENCE_MINUEND_PLACES=438, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=487, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=416, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6936, PETRI_PLACES=449, PETRI_TRANSITIONS=491} [2024-06-28 03:01:12,900 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 418 predicate places. [2024-06-28 03:01:12,900 INFO L495 AbstractCegarLoop]: Abstraction has has 449 places, 491 transitions, 6936 flow [2024-06-28 03:01:12,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:01:12,901 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:01:12,901 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:01:12,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-06-28 03:01:12,901 INFO L420 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:01:12,901 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:01:12,901 INFO L85 PathProgramCache]: Analyzing trace with hash -556118137, now seen corresponding path program 22 times [2024-06-28 03:01:12,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:01:12,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721315696] [2024-06-28 03:01:12,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:01:12,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:01:12,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:01:13,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:01:13,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:01:13,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721315696] [2024-06-28 03:01:13,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721315696] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:01:13,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:01:13,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:01:13,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816004579] [2024-06-28 03:01:13,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:01:13,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:01:13,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:01:13,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:01:13,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:01:14,030 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 03:01:14,030 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 449 places, 491 transitions, 6936 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:01:14,030 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:01:14,030 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 03:01:14,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:01:14,702 INFO L124 PetriNetUnfolderBase]: 987/1823 cut-off events. [2024-06-28 03:01:14,702 INFO L125 PetriNetUnfolderBase]: For 410965/410965 co-relation queries the response was YES. [2024-06-28 03:01:14,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18739 conditions, 1823 events. 987/1823 cut-off events. For 410965/410965 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 11213 event pairs, 55 based on Foata normal form. 2/1820 useless extension candidates. Maximal degree in co-relation 18532. Up to 737 conditions per place. [2024-06-28 03:01:14,730 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 291 selfloop transitions, 226 changer transitions 0/520 dead transitions. [2024-06-28 03:01:14,730 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 459 places, 520 transitions, 9709 flow [2024-06-28 03:01:14,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:01:14,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:01:14,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 156 transitions. [2024-06-28 03:01:14,731 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4431818181818182 [2024-06-28 03:01:14,731 INFO L175 Difference]: Start difference. First operand has 449 places, 491 transitions, 6936 flow. Second operand 11 states and 156 transitions. [2024-06-28 03:01:14,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 459 places, 520 transitions, 9709 flow [2024-06-28 03:01:16,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 452 places, 520 transitions, 9554 flow, removed 39 selfloop flow, removed 7 redundant places. [2024-06-28 03:01:16,483 INFO L231 Difference]: Finished difference. Result has 453 places, 502 transitions, 7724 flow [2024-06-28 03:01:16,483 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6781, PETRI_DIFFERENCE_MINUEND_PLACES=442, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=491, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=217, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7724, PETRI_PLACES=453, PETRI_TRANSITIONS=502} [2024-06-28 03:01:16,484 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 422 predicate places. [2024-06-28 03:01:16,484 INFO L495 AbstractCegarLoop]: Abstraction has has 453 places, 502 transitions, 7724 flow [2024-06-28 03:01:16,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:01:16,484 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:01:16,484 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:01:16,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-06-28 03:01:16,484 INFO L420 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:01:16,484 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:01:16,484 INFO L85 PathProgramCache]: Analyzing trace with hash -1894645701, now seen corresponding path program 8 times [2024-06-28 03:01:16,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:01:16,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024383379] [2024-06-28 03:01:16,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:01:16,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:01:16,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:01:17,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:01:17,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:01:17,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024383379] [2024-06-28 03:01:17,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024383379] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:01:17,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:01:17,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:01:17,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303800239] [2024-06-28 03:01:17,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:01:17,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:01:17,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:01:17,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:01:17,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:01:18,131 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 03:01:18,131 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 453 places, 502 transitions, 7724 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:01:18,131 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:01:18,132 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 03:01:18,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:01:18,796 INFO L124 PetriNetUnfolderBase]: 998/1844 cut-off events. [2024-06-28 03:01:18,796 INFO L125 PetriNetUnfolderBase]: For 418721/418721 co-relation queries the response was YES. [2024-06-28 03:01:18,814 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19361 conditions, 1844 events. 998/1844 cut-off events. For 418721/418721 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 11367 event pairs, 112 based on Foata normal form. 2/1844 useless extension candidates. Maximal degree in co-relation 19152. Up to 1656 conditions per place. [2024-06-28 03:01:18,820 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 491 selfloop transitions, 25 changer transitions 0/519 dead transitions. [2024-06-28 03:01:18,820 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 464 places, 519 transitions, 8853 flow [2024-06-28 03:01:18,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:01:18,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:01:18,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 140 transitions. [2024-06-28 03:01:18,821 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3645833333333333 [2024-06-28 03:01:18,821 INFO L175 Difference]: Start difference. First operand has 453 places, 502 transitions, 7724 flow. Second operand 12 states and 140 transitions. [2024-06-28 03:01:18,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 464 places, 519 transitions, 8853 flow [2024-06-28 03:01:20,684 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 460 places, 519 transitions, 8577 flow, removed 102 selfloop flow, removed 4 redundant places. [2024-06-28 03:01:20,690 INFO L231 Difference]: Finished difference. Result has 462 places, 506 transitions, 7579 flow [2024-06-28 03:01:20,690 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7448, PETRI_DIFFERENCE_MINUEND_PLACES=449, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=502, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=479, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7579, PETRI_PLACES=462, PETRI_TRANSITIONS=506} [2024-06-28 03:01:20,690 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 431 predicate places. [2024-06-28 03:01:20,691 INFO L495 AbstractCegarLoop]: Abstraction has has 462 places, 506 transitions, 7579 flow [2024-06-28 03:01:20,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:01:20,691 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:01:20,691 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:01:20,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-06-28 03:01:20,691 INFO L420 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:01:20,691 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:01:20,691 INFO L85 PathProgramCache]: Analyzing trace with hash -1551456349, now seen corresponding path program 9 times [2024-06-28 03:01:20,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:01:20,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49395736] [2024-06-28 03:01:20,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:01:20,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:01:20,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:01:21,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:01:21,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:01:21,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49395736] [2024-06-28 03:01:21,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49395736] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:01:21,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:01:21,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:01:21,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747557773] [2024-06-28 03:01:21,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:01:21,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:01:21,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:01:21,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:01:21,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:01:22,116 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 03:01:22,117 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 462 places, 506 transitions, 7579 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:01:22,117 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:01:22,117 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 03:01:22,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:01:22,750 INFO L124 PetriNetUnfolderBase]: 1002/1853 cut-off events. [2024-06-28 03:01:22,751 INFO L125 PetriNetUnfolderBase]: For 422399/422399 co-relation queries the response was YES. [2024-06-28 03:01:22,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19229 conditions, 1853 events. 1002/1853 cut-off events. For 422399/422399 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 11451 event pairs, 47 based on Foata normal form. 2/1850 useless extension candidates. Maximal degree in co-relation 19017. Up to 1644 conditions per place. [2024-06-28 03:01:22,779 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 478 selfloop transitions, 37 changer transitions 0/518 dead transitions. [2024-06-28 03:01:22,779 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 472 places, 518 transitions, 8683 flow [2024-06-28 03:01:22,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:01:22,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:01:22,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-28 03:01:22,780 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3664772727272727 [2024-06-28 03:01:22,780 INFO L175 Difference]: Start difference. First operand has 462 places, 506 transitions, 7579 flow. Second operand 11 states and 129 transitions. [2024-06-28 03:01:22,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 472 places, 518 transitions, 8683 flow [2024-06-28 03:01:24,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 463 places, 518 transitions, 8588 flow, removed 26 selfloop flow, removed 9 redundant places. [2024-06-28 03:01:24,866 INFO L231 Difference]: Finished difference. Result has 464 places, 507 transitions, 7614 flow [2024-06-28 03:01:24,866 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7484, PETRI_DIFFERENCE_MINUEND_PLACES=453, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=506, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=469, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7614, PETRI_PLACES=464, PETRI_TRANSITIONS=507} [2024-06-28 03:01:24,867 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 433 predicate places. [2024-06-28 03:01:24,867 INFO L495 AbstractCegarLoop]: Abstraction has has 464 places, 507 transitions, 7614 flow [2024-06-28 03:01:24,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:01:24,867 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:01:24,867 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:01:24,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-06-28 03:01:24,867 INFO L420 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:01:24,867 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:01:24,867 INFO L85 PathProgramCache]: Analyzing trace with hash -1329820237, now seen corresponding path program 23 times [2024-06-28 03:01:24,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:01:24,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342100003] [2024-06-28 03:01:24,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:01:24,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:01:24,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:01:26,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:01:26,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:01:26,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342100003] [2024-06-28 03:01:26,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342100003] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:01:26,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:01:26,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:01:26,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467529045] [2024-06-28 03:01:26,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:01:26,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:01:26,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:01:26,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:01:26,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:01:26,168 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 03:01:26,168 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 464 places, 507 transitions, 7614 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:01:26,168 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:01:26,168 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 03:01:26,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:01:26,856 INFO L124 PetriNetUnfolderBase]: 1010/1869 cut-off events. [2024-06-28 03:01:26,856 INFO L125 PetriNetUnfolderBase]: For 429540/429540 co-relation queries the response was YES. [2024-06-28 03:01:26,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19617 conditions, 1869 events. 1010/1869 cut-off events. For 429540/429540 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 11599 event pairs, 50 based on Foata normal form. 1/1865 useless extension candidates. Maximal degree in co-relation 19406. Up to 1504 conditions per place. [2024-06-28 03:01:26,887 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 436 selfloop transitions, 90 changer transitions 0/529 dead transitions. [2024-06-28 03:01:26,887 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 474 places, 529 transitions, 9981 flow [2024-06-28 03:01:26,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:01:26,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:01:26,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 147 transitions. [2024-06-28 03:01:26,887 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41761363636363635 [2024-06-28 03:01:26,888 INFO L175 Difference]: Start difference. First operand has 464 places, 507 transitions, 7614 flow. Second operand 11 states and 147 transitions. [2024-06-28 03:01:26,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 474 places, 529 transitions, 9981 flow [2024-06-28 03:01:29,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 462 places, 529 transitions, 9829 flow, removed 25 selfloop flow, removed 12 redundant places. [2024-06-28 03:01:29,088 INFO L231 Difference]: Finished difference. Result has 464 places, 516 transitions, 8088 flow [2024-06-28 03:01:29,088 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7462, PETRI_DIFFERENCE_MINUEND_PLACES=452, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=507, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=422, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8088, PETRI_PLACES=464, PETRI_TRANSITIONS=516} [2024-06-28 03:01:29,088 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 433 predicate places. [2024-06-28 03:01:29,088 INFO L495 AbstractCegarLoop]: Abstraction has has 464 places, 516 transitions, 8088 flow [2024-06-28 03:01:29,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:01:29,089 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:01:29,089 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:01:29,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2024-06-28 03:01:29,089 INFO L420 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:01:29,089 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:01:29,089 INFO L85 PathProgramCache]: Analyzing trace with hash -1329819989, now seen corresponding path program 6 times [2024-06-28 03:01:29,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:01:29,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355470574] [2024-06-28 03:01:29,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:01:29,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:01:29,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:01:30,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:01:30,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:01:30,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355470574] [2024-06-28 03:01:30,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355470574] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:01:30,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:01:30,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:01:30,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130391201] [2024-06-28 03:01:30,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:01:30,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:01:30,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:01:30,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:01:30,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:01:30,524 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 03:01:30,525 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 464 places, 516 transitions, 8088 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:01:30,525 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:01:30,525 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 03:01:30,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:01:31,174 INFO L124 PetriNetUnfolderBase]: 1013/1872 cut-off events. [2024-06-28 03:01:31,174 INFO L125 PetriNetUnfolderBase]: For 434943/434943 co-relation queries the response was YES. [2024-06-28 03:01:31,195 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19794 conditions, 1872 events. 1013/1872 cut-off events. For 434943/434943 co-relation queries the response was YES. Maximal size of possible extension queue 220. Compared 11595 event pairs, 56 based on Foata normal form. 1/1868 useless extension candidates. Maximal degree in co-relation 19582. Up to 1522 conditions per place. [2024-06-28 03:01:31,201 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 445 selfloop transitions, 81 changer transitions 0/529 dead transitions. [2024-06-28 03:01:31,201 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 474 places, 529 transitions, 9234 flow [2024-06-28 03:01:31,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:01:31,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:01:31,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 143 transitions. [2024-06-28 03:01:31,201 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-28 03:01:31,202 INFO L175 Difference]: Start difference. First operand has 464 places, 516 transitions, 8088 flow. Second operand 11 states and 143 transitions. [2024-06-28 03:01:31,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 474 places, 529 transitions, 9234 flow [2024-06-28 03:01:33,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 469 places, 529 transitions, 9004 flow, removed 80 selfloop flow, removed 5 redundant places. [2024-06-28 03:01:33,234 INFO L231 Difference]: Finished difference. Result has 470 places, 518 transitions, 8097 flow [2024-06-28 03:01:33,234 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7858, PETRI_DIFFERENCE_MINUEND_PLACES=459, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=516, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=435, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8097, PETRI_PLACES=470, PETRI_TRANSITIONS=518} [2024-06-28 03:01:33,234 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 439 predicate places. [2024-06-28 03:01:33,234 INFO L495 AbstractCegarLoop]: Abstraction has has 470 places, 518 transitions, 8097 flow [2024-06-28 03:01:33,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:01:33,235 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:01:33,235 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:01:33,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2024-06-28 03:01:33,235 INFO L420 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:01:33,235 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:01:33,235 INFO L85 PathProgramCache]: Analyzing trace with hash -1941344783, now seen corresponding path program 10 times [2024-06-28 03:01:33,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:01:33,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796078897] [2024-06-28 03:01:33,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:01:33,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:01:33,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:01:34,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:01:34,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:01:34,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796078897] [2024-06-28 03:01:34,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796078897] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:01:34,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:01:34,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:01:34,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009461357] [2024-06-28 03:01:34,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:01:34,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:01:34,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:01:34,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:01:34,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:01:34,767 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 03:01:34,768 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 470 places, 518 transitions, 8097 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:01:34,768 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:01:34,768 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 03:01:34,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:01:35,421 INFO L124 PetriNetUnfolderBase]: 1017/1882 cut-off events. [2024-06-28 03:01:35,422 INFO L125 PetriNetUnfolderBase]: For 452389/452389 co-relation queries the response was YES. [2024-06-28 03:01:35,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19911 conditions, 1882 events. 1017/1882 cut-off events. For 452389/452389 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 11695 event pairs, 113 based on Foata normal form. 2/1882 useless extension candidates. Maximal degree in co-relation 19697. Up to 1699 conditions per place. [2024-06-28 03:01:35,451 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 508 selfloop transitions, 20 changer transitions 0/531 dead transitions. [2024-06-28 03:01:35,451 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 480 places, 531 transitions, 9231 flow [2024-06-28 03:01:35,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:01:35,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:01:35,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 128 transitions. [2024-06-28 03:01:35,452 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-28 03:01:35,452 INFO L175 Difference]: Start difference. First operand has 470 places, 518 transitions, 8097 flow. Second operand 11 states and 128 transitions. [2024-06-28 03:01:35,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 480 places, 531 transitions, 9231 flow [2024-06-28 03:01:37,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 471 places, 531 transitions, 9008 flow, removed 32 selfloop flow, removed 9 redundant places. [2024-06-28 03:01:37,565 INFO L231 Difference]: Finished difference. Result has 472 places, 519 transitions, 7972 flow [2024-06-28 03:01:37,565 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7874, PETRI_DIFFERENCE_MINUEND_PLACES=461, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=518, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=498, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7972, PETRI_PLACES=472, PETRI_TRANSITIONS=519} [2024-06-28 03:01:37,565 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 441 predicate places. [2024-06-28 03:01:37,565 INFO L495 AbstractCegarLoop]: Abstraction has has 472 places, 519 transitions, 7972 flow [2024-06-28 03:01:37,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:01:37,565 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:01:37,565 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:01:37,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2024-06-28 03:01:37,566 INFO L420 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:01:37,566 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:01:37,566 INFO L85 PathProgramCache]: Analyzing trace with hash -1551702427, now seen corresponding path program 24 times [2024-06-28 03:01:37,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:01:37,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666873219] [2024-06-28 03:01:37,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:01:37,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:01:37,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:01:38,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:01:38,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:01:38,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666873219] [2024-06-28 03:01:38,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666873219] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:01:38,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:01:38,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:01:38,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20487025] [2024-06-28 03:01:38,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:01:38,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:01:38,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:01:38,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:01:38,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:01:38,727 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 03:01:38,727 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 472 places, 519 transitions, 7972 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:01:38,727 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:01:38,727 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 03:01:38,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:01:39,460 INFO L124 PetriNetUnfolderBase]: 1020/1889 cut-off events. [2024-06-28 03:01:39,460 INFO L125 PetriNetUnfolderBase]: For 447150/447150 co-relation queries the response was YES. [2024-06-28 03:01:39,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19872 conditions, 1889 events. 1020/1889 cut-off events. For 447150/447150 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 11749 event pairs, 52 based on Foata normal form. 1/1885 useless extension candidates. Maximal degree in co-relation 19657. Up to 1564 conditions per place. [2024-06-28 03:01:39,489 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 450 selfloop transitions, 79 changer transitions 0/532 dead transitions. [2024-06-28 03:01:39,489 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 482 places, 532 transitions, 9442 flow [2024-06-28 03:01:39,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:01:39,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:01:39,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 140 transitions. [2024-06-28 03:01:39,490 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3977272727272727 [2024-06-28 03:01:39,490 INFO L175 Difference]: Start difference. First operand has 472 places, 519 transitions, 7972 flow. Second operand 11 states and 140 transitions. [2024-06-28 03:01:39,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 482 places, 532 transitions, 9442 flow [2024-06-28 03:01:41,590 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 473 places, 532 transitions, 9349 flow, removed 26 selfloop flow, removed 9 redundant places. [2024-06-28 03:01:41,596 INFO L231 Difference]: Finished difference. Result has 474 places, 521 transitions, 8132 flow [2024-06-28 03:01:41,596 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7879, PETRI_DIFFERENCE_MINUEND_PLACES=463, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=519, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=442, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8132, PETRI_PLACES=474, PETRI_TRANSITIONS=521} [2024-06-28 03:01:41,597 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 443 predicate places. [2024-06-28 03:01:41,597 INFO L495 AbstractCegarLoop]: Abstraction has has 474 places, 521 transitions, 8132 flow [2024-06-28 03:01:41,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:01:41,597 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:01:41,597 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:01:41,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2024-06-28 03:01:41,597 INFO L420 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:01:41,598 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:01:41,598 INFO L85 PathProgramCache]: Analyzing trace with hash -1551695917, now seen corresponding path program 25 times [2024-06-28 03:01:41,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:01:41,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860918571] [2024-06-28 03:01:41,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:01:41,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:01:41,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:01:42,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:01:42,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:01:42,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860918571] [2024-06-28 03:01:42,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860918571] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:01:42,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:01:42,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:01:42,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653819520] [2024-06-28 03:01:42,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:01:42,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:01:42,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:01:42,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:01:42,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:01:42,727 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 03:01:42,728 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 474 places, 521 transitions, 8132 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:01:42,728 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:01:42,728 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 03:01:42,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:01:43,428 INFO L124 PetriNetUnfolderBase]: 1018/1886 cut-off events. [2024-06-28 03:01:43,428 INFO L125 PetriNetUnfolderBase]: For 440764/440764 co-relation queries the response was YES. [2024-06-28 03:01:43,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19727 conditions, 1886 events. 1018/1886 cut-off events. For 440764/440764 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 11722 event pairs, 52 based on Foata normal form. 1/1882 useless extension candidates. Maximal degree in co-relation 19512. Up to 1562 conditions per place. [2024-06-28 03:01:43,456 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 450 selfloop transitions, 79 changer transitions 0/532 dead transitions. [2024-06-28 03:01:43,456 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 484 places, 532 transitions, 9229 flow [2024-06-28 03:01:43,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:01:43,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:01:43,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 140 transitions. [2024-06-28 03:01:43,457 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3977272727272727 [2024-06-28 03:01:43,457 INFO L175 Difference]: Start difference. First operand has 474 places, 521 transitions, 8132 flow. Second operand 11 states and 140 transitions. [2024-06-28 03:01:43,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 484 places, 532 transitions, 9229 flow [2024-06-28 03:01:45,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 474 places, 532 transitions, 8880 flow, removed 79 selfloop flow, removed 10 redundant places. [2024-06-28 03:01:45,711 INFO L231 Difference]: Finished difference. Result has 475 places, 522 transitions, 7963 flow [2024-06-28 03:01:45,711 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7790, PETRI_DIFFERENCE_MINUEND_PLACES=464, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=521, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=443, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7963, PETRI_PLACES=475, PETRI_TRANSITIONS=522} [2024-06-28 03:01:45,711 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 444 predicate places. [2024-06-28 03:01:45,711 INFO L495 AbstractCegarLoop]: Abstraction has has 475 places, 522 transitions, 7963 flow [2024-06-28 03:01:45,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:01:45,712 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:01:45,712 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:01:45,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2024-06-28 03:01:45,712 INFO L420 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:01:45,712 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:01:45,712 INFO L85 PathProgramCache]: Analyzing trace with hash -1329811619, now seen corresponding path program 7 times [2024-06-28 03:01:45,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:01:45,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065247098] [2024-06-28 03:01:45,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:01:45,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:01:45,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:01:47,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:01:47,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:01:47,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065247098] [2024-06-28 03:01:47,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065247098] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:01:47,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:01:47,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:01:47,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101697253] [2024-06-28 03:01:47,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:01:47,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:01:47,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:01:47,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:01:47,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:01:47,170 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 03:01:47,170 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 475 places, 522 transitions, 7963 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:01:47,170 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:01:47,170 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 03:01:47,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:01:47,823 INFO L124 PetriNetUnfolderBase]: 1026/1901 cut-off events. [2024-06-28 03:01:47,823 INFO L125 PetriNetUnfolderBase]: For 458635/458635 co-relation queries the response was YES. [2024-06-28 03:01:47,847 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19946 conditions, 1901 events. 1026/1901 cut-off events. For 458635/458635 co-relation queries the response was YES. Maximal size of possible extension queue 224. Compared 11874 event pairs, 55 based on Foata normal form. 1/1897 useless extension candidates. Maximal degree in co-relation 19731. Up to 1535 conditions per place. [2024-06-28 03:01:47,854 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 448 selfloop transitions, 87 changer transitions 0/538 dead transitions. [2024-06-28 03:01:47,855 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 485 places, 538 transitions, 9507 flow [2024-06-28 03:01:47,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:01:47,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:01:47,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 145 transitions. [2024-06-28 03:01:47,856 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4119318181818182 [2024-06-28 03:01:47,856 INFO L175 Difference]: Start difference. First operand has 475 places, 522 transitions, 7963 flow. Second operand 11 states and 145 transitions. [2024-06-28 03:01:47,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 485 places, 538 transitions, 9507 flow [2024-06-28 03:01:50,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 478 places, 538 transitions, 9364 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-28 03:01:50,196 INFO L231 Difference]: Finished difference. Result has 479 places, 526 transitions, 8147 flow [2024-06-28 03:01:50,196 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7820, PETRI_DIFFERENCE_MINUEND_PLACES=468, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=522, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=437, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8147, PETRI_PLACES=479, PETRI_TRANSITIONS=526} [2024-06-28 03:01:50,196 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 448 predicate places. [2024-06-28 03:01:50,196 INFO L495 AbstractCegarLoop]: Abstraction has has 479 places, 526 transitions, 8147 flow [2024-06-28 03:01:50,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:01:50,197 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:01:50,197 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:01:50,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2024-06-28 03:01:50,197 INFO L420 AbstractCegarLoop]: === Iteration 154 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:01:50,197 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:01:50,197 INFO L85 PathProgramCache]: Analyzing trace with hash -1329811309, now seen corresponding path program 11 times [2024-06-28 03:01:50,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:01:50,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548793458] [2024-06-28 03:01:50,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:01:50,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:01:50,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:01:51,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:01:51,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:01:51,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548793458] [2024-06-28 03:01:51,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548793458] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:01:51,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:01:51,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:01:51,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537101447] [2024-06-28 03:01:51,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:01:51,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:01:51,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:01:51,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:01:51,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:01:51,723 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 03:01:51,723 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 479 places, 526 transitions, 8147 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:01:51,723 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:01:51,723 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 03:01:51,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:01:52,335 INFO L124 PetriNetUnfolderBase]: 1030/1909 cut-off events. [2024-06-28 03:01:52,335 INFO L125 PetriNetUnfolderBase]: For 475657/475657 co-relation queries the response was YES. [2024-06-28 03:01:52,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20140 conditions, 1909 events. 1030/1909 cut-off events. For 475657/475657 co-relation queries the response was YES. Maximal size of possible extension queue 225. Compared 11927 event pairs, 50 based on Foata normal form. 2/1907 useless extension candidates. Maximal degree in co-relation 19924. Up to 1678 conditions per place. [2024-06-28 03:01:52,367 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 491 selfloop transitions, 44 changer transitions 0/538 dead transitions. [2024-06-28 03:01:52,367 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 489 places, 538 transitions, 9295 flow [2024-06-28 03:01:52,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:01:52,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:01:52,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-28 03:01:52,368 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3778409090909091 [2024-06-28 03:01:52,368 INFO L175 Difference]: Start difference. First operand has 479 places, 526 transitions, 8147 flow. Second operand 11 states and 133 transitions. [2024-06-28 03:01:52,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 489 places, 538 transitions, 9295 flow [2024-06-28 03:01:54,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 482 places, 538 transitions, 9119 flow, removed 38 selfloop flow, removed 7 redundant places. [2024-06-28 03:01:54,623 INFO L231 Difference]: Finished difference. Result has 483 places, 527 transitions, 8119 flow [2024-06-28 03:01:54,623 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7971, PETRI_DIFFERENCE_MINUEND_PLACES=472, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=526, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=482, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8119, PETRI_PLACES=483, PETRI_TRANSITIONS=527} [2024-06-28 03:01:54,623 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 452 predicate places. [2024-06-28 03:01:54,623 INFO L495 AbstractCegarLoop]: Abstraction has has 483 places, 527 transitions, 8119 flow [2024-06-28 03:01:54,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:01:54,624 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:01:54,624 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:01:54,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2024-06-28 03:01:54,624 INFO L420 AbstractCegarLoop]: === Iteration 155 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:01:54,624 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:01:54,624 INFO L85 PathProgramCache]: Analyzing trace with hash -729396505, now seen corresponding path program 12 times [2024-06-28 03:01:54,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:01:54,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366388627] [2024-06-28 03:01:54,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:01:54,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:01:54,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:01:55,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:01:55,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:01:55,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366388627] [2024-06-28 03:01:55,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366388627] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:01:55,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:01:55,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:01:55,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596468558] [2024-06-28 03:01:55,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:01:55,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:01:55,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:01:55,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:01:55,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:01:55,940 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 03:01:55,940 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 483 places, 527 transitions, 8119 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:01:55,940 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:01:55,940 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 03:01:55,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:01:56,608 INFO L124 PetriNetUnfolderBase]: 1034/1915 cut-off events. [2024-06-28 03:01:56,609 INFO L125 PetriNetUnfolderBase]: For 482010/482010 co-relation queries the response was YES. [2024-06-28 03:01:56,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20277 conditions, 1915 events. 1034/1915 cut-off events. For 482010/482010 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 11963 event pairs, 115 based on Foata normal form. 2/1915 useless extension candidates. Maximal degree in co-relation 20059. Up to 1679 conditions per place. [2024-06-28 03:01:56,641 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 512 selfloop transitions, 26 changer transitions 0/541 dead transitions. [2024-06-28 03:01:56,641 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 493 places, 541 transitions, 9279 flow [2024-06-28 03:01:56,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:01:56,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:01:56,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-28 03:01:56,642 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3664772727272727 [2024-06-28 03:01:56,642 INFO L175 Difference]: Start difference. First operand has 483 places, 527 transitions, 8119 flow. Second operand 11 states and 129 transitions. [2024-06-28 03:01:56,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 493 places, 541 transitions, 9279 flow [2024-06-28 03:01:59,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 484 places, 541 transitions, 9141 flow, removed 26 selfloop flow, removed 9 redundant places. [2024-06-28 03:01:59,156 INFO L231 Difference]: Finished difference. Result has 485 places, 528 transitions, 8095 flow [2024-06-28 03:01:59,156 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7981, PETRI_DIFFERENCE_MINUEND_PLACES=474, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=527, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=501, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8095, PETRI_PLACES=485, PETRI_TRANSITIONS=528} [2024-06-28 03:01:59,157 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 454 predicate places. [2024-06-28 03:01:59,157 INFO L495 AbstractCegarLoop]: Abstraction has has 485 places, 528 transitions, 8095 flow [2024-06-28 03:01:59,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:01:59,157 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:01:59,157 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:01:59,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2024-06-28 03:01:59,157 INFO L420 AbstractCegarLoop]: === Iteration 156 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:01:59,157 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:01:59,158 INFO L85 PathProgramCache]: Analyzing trace with hash -1330057387, now seen corresponding path program 26 times [2024-06-28 03:01:59,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:01:59,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210332812] [2024-06-28 03:01:59,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:01:59,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:01:59,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:02:00,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:02:00,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:02:00,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210332812] [2024-06-28 03:02:00,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210332812] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:02:00,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:02:00,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:02:00,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210439590] [2024-06-28 03:02:00,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:02:00,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:02:00,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:02:00,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:02:00,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:02:00,485 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 03:02:00,485 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 485 places, 528 transitions, 8095 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:02:00,485 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:02:00,485 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 03:02:00,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:02:01,244 INFO L124 PetriNetUnfolderBase]: 1037/1924 cut-off events. [2024-06-28 03:02:01,244 INFO L125 PetriNetUnfolderBase]: For 477634/477634 co-relation queries the response was YES. [2024-06-28 03:02:01,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20288 conditions, 1924 events. 1037/1924 cut-off events. For 477634/477634 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 12090 event pairs, 54 based on Foata normal form. 1/1920 useless extension candidates. Maximal degree in co-relation 20069. Up to 1552 conditions per place. [2024-06-28 03:02:01,276 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 440 selfloop transitions, 98 changer transitions 0/541 dead transitions. [2024-06-28 03:02:01,276 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 495 places, 541 transitions, 9583 flow [2024-06-28 03:02:01,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:02:01,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:02:01,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 143 transitions. [2024-06-28 03:02:01,277 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-28 03:02:01,277 INFO L175 Difference]: Start difference. First operand has 485 places, 528 transitions, 8095 flow. Second operand 11 states and 143 transitions. [2024-06-28 03:02:01,277 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 495 places, 541 transitions, 9583 flow [2024-06-28 03:02:03,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 486 places, 541 transitions, 9479 flow, removed 27 selfloop flow, removed 9 redundant places. [2024-06-28 03:02:03,775 INFO L231 Difference]: Finished difference. Result has 487 places, 530 transitions, 8272 flow [2024-06-28 03:02:03,775 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7991, PETRI_DIFFERENCE_MINUEND_PLACES=476, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=528, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=432, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8272, PETRI_PLACES=487, PETRI_TRANSITIONS=530} [2024-06-28 03:02:03,775 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 456 predicate places. [2024-06-28 03:02:03,775 INFO L495 AbstractCegarLoop]: Abstraction has has 487 places, 530 transitions, 8272 flow [2024-06-28 03:02:03,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:02:03,776 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:02:03,776 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:02:03,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2024-06-28 03:02:03,776 INFO L420 AbstractCegarLoop]: === Iteration 157 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:02:03,777 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:02:03,777 INFO L85 PathProgramCache]: Analyzing trace with hash 2076555983, now seen corresponding path program 13 times [2024-06-28 03:02:03,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:02:03,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187020493] [2024-06-28 03:02:03,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:02:03,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:02:03,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:02:05,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:02:05,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:02:05,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187020493] [2024-06-28 03:02:05,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187020493] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:02:05,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:02:05,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:02:05,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392305140] [2024-06-28 03:02:05,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:02:05,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:02:05,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:02:05,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:02:05,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:02:05,369 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 03:02:05,370 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 487 places, 530 transitions, 8272 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:02:05,370 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:02:05,370 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 03:02:05,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:02:05,993 INFO L124 PetriNetUnfolderBase]: 1041/1930 cut-off events. [2024-06-28 03:02:05,993 INFO L125 PetriNetUnfolderBase]: For 494321/494321 co-relation queries the response was YES. [2024-06-28 03:02:06,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20492 conditions, 1930 events. 1041/1930 cut-off events. For 494321/494321 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 12127 event pairs, 52 based on Foata normal form. 2/1928 useless extension candidates. Maximal degree in co-relation 20272. Up to 1603 conditions per place. [2024-06-28 03:02:06,024 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 454 selfloop transitions, 85 changer transitions 0/542 dead transitions. [2024-06-28 03:02:06,024 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 497 places, 542 transitions, 9432 flow [2024-06-28 03:02:06,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:02:06,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:02:06,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-28 03:02:06,025 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38636363636363635 [2024-06-28 03:02:06,025 INFO L175 Difference]: Start difference. First operand has 487 places, 530 transitions, 8272 flow. Second operand 11 states and 136 transitions. [2024-06-28 03:02:06,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 497 places, 542 transitions, 9432 flow [2024-06-28 03:02:08,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 489 places, 542 transitions, 9165 flow, removed 43 selfloop flow, removed 8 redundant places. [2024-06-28 03:02:08,380 INFO L231 Difference]: Finished difference. Result has 490 places, 531 transitions, 8239 flow [2024-06-28 03:02:08,381 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=8005, PETRI_DIFFERENCE_MINUEND_PLACES=479, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=530, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=445, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8239, PETRI_PLACES=490, PETRI_TRANSITIONS=531} [2024-06-28 03:02:08,381 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 459 predicate places. [2024-06-28 03:02:08,381 INFO L495 AbstractCegarLoop]: Abstraction has has 490 places, 531 transitions, 8239 flow [2024-06-28 03:02:08,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:02:08,381 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:02:08,381 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:02:08,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2024-06-28 03:02:08,382 INFO L420 AbstractCegarLoop]: === Iteration 158 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:02:08,382 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:02:08,382 INFO L85 PathProgramCache]: Analyzing trace with hash 2076566213, now seen corresponding path program 14 times [2024-06-28 03:02:08,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:02:08,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088205762] [2024-06-28 03:02:08,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:02:08,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:02:08,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:02:09,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:02:09,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:02:09,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088205762] [2024-06-28 03:02:09,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088205762] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:02:09,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:02:09,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:02:09,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316981357] [2024-06-28 03:02:09,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:02:09,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:02:09,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:02:09,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:02:09,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:02:09,964 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 03:02:09,964 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 490 places, 531 transitions, 8239 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:02:09,964 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:02:09,964 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 03:02:09,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:02:10,606 INFO L124 PetriNetUnfolderBase]: 1052/1951 cut-off events. [2024-06-28 03:02:10,606 INFO L125 PetriNetUnfolderBase]: For 528989/528989 co-relation queries the response was YES. [2024-06-28 03:02:10,631 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21074 conditions, 1951 events. 1052/1951 cut-off events. For 528989/528989 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 12261 event pairs, 50 based on Foata normal form. 2/1949 useless extension candidates. Maximal degree in co-relation 20853. Up to 1599 conditions per place. [2024-06-28 03:02:10,639 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 456 selfloop transitions, 87 changer transitions 0/546 dead transitions. [2024-06-28 03:02:10,639 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 500 places, 546 transitions, 9785 flow [2024-06-28 03:02:10,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:02:10,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:02:10,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2024-06-28 03:02:10,639 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39204545454545453 [2024-06-28 03:02:10,639 INFO L175 Difference]: Start difference. First operand has 490 places, 531 transitions, 8239 flow. Second operand 11 states and 138 transitions. [2024-06-28 03:02:10,640 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 500 places, 546 transitions, 9785 flow [2024-06-28 03:02:13,097 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 491 places, 546 transitions, 9561 flow, removed 28 selfloop flow, removed 9 redundant places. [2024-06-28 03:02:13,104 INFO L231 Difference]: Finished difference. Result has 492 places, 533 transitions, 8315 flow [2024-06-28 03:02:13,104 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=8015, PETRI_DIFFERENCE_MINUEND_PLACES=481, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=531, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=445, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8315, PETRI_PLACES=492, PETRI_TRANSITIONS=533} [2024-06-28 03:02:13,104 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 461 predicate places. [2024-06-28 03:02:13,104 INFO L495 AbstractCegarLoop]: Abstraction has has 492 places, 533 transitions, 8315 flow [2024-06-28 03:02:13,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:02:13,105 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:02:13,105 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:02:13,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2024-06-28 03:02:13,105 INFO L420 AbstractCegarLoop]: === Iteration 159 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:02:13,106 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:02:13,106 INFO L85 PathProgramCache]: Analyzing trace with hash 2067984545, now seen corresponding path program 27 times [2024-06-28 03:02:13,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:02:13,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766018546] [2024-06-28 03:02:13,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:02:13,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:02:13,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:02:14,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:02:14,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:02:14,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766018546] [2024-06-28 03:02:14,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766018546] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:02:14,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:02:14,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:02:14,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295715906] [2024-06-28 03:02:14,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:02:14,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:02:14,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:02:14,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:02:14,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:02:14,172 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 03:02:14,172 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 492 places, 533 transitions, 8315 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:02:14,172 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:02:14,172 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 03:02:14,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:02:14,938 INFO L124 PetriNetUnfolderBase]: 1069/1986 cut-off events. [2024-06-28 03:02:14,938 INFO L125 PetriNetUnfolderBase]: For 560610/560610 co-relation queries the response was YES. [2024-06-28 03:02:14,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21839 conditions, 1986 events. 1069/1986 cut-off events. For 560610/560610 co-relation queries the response was YES. Maximal size of possible extension queue 238. Compared 12548 event pairs, 58 based on Foata normal form. 2/1983 useless extension candidates. Maximal degree in co-relation 21617. Up to 814 conditions per place. [2024-06-28 03:02:14,967 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 303 selfloop transitions, 247 changer transitions 0/553 dead transitions. [2024-06-28 03:02:14,967 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 502 places, 553 transitions, 10659 flow [2024-06-28 03:02:14,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:02:14,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:02:14,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 151 transitions. [2024-06-28 03:02:14,968 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4289772727272727 [2024-06-28 03:02:14,968 INFO L175 Difference]: Start difference. First operand has 492 places, 533 transitions, 8315 flow. Second operand 11 states and 151 transitions. [2024-06-28 03:02:14,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 502 places, 553 transitions, 10659 flow [2024-06-28 03:02:17,612 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 494 places, 553 transitions, 10471 flow, removed 37 selfloop flow, removed 8 redundant places. [2024-06-28 03:02:17,618 INFO L231 Difference]: Finished difference. Result has 495 places, 538 transitions, 8820 flow [2024-06-28 03:02:17,619 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=8127, PETRI_DIFFERENCE_MINUEND_PLACES=484, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=533, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=242, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=290, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8820, PETRI_PLACES=495, PETRI_TRANSITIONS=538} [2024-06-28 03:02:17,619 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 464 predicate places. [2024-06-28 03:02:17,619 INFO L495 AbstractCegarLoop]: Abstraction has has 495 places, 538 transitions, 8820 flow [2024-06-28 03:02:17,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:02:17,619 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:02:17,619 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:02:17,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2024-06-28 03:02:17,620 INFO L420 AbstractCegarLoop]: === Iteration 160 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:02:17,620 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:02:17,620 INFO L85 PathProgramCache]: Analyzing trace with hash 2076267683, now seen corresponding path program 15 times [2024-06-28 03:02:17,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:02:17,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512742535] [2024-06-28 03:02:17,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:02:17,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:02:17,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:02:19,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:02:19,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:02:19,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512742535] [2024-06-28 03:02:19,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512742535] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:02:19,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:02:19,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:02:19,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293739593] [2024-06-28 03:02:19,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:02:19,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:02:19,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:02:19,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:02:19,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:02:19,154 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 03:02:19,154 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 495 places, 538 transitions, 8820 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:02:19,154 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:02:19,154 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 03:02:19,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:02:19,801 INFO L124 PetriNetUnfolderBase]: 1073/1996 cut-off events. [2024-06-28 03:02:19,802 INFO L125 PetriNetUnfolderBase]: For 570969/570969 co-relation queries the response was YES. [2024-06-28 03:02:19,827 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22349 conditions, 1996 events. 1073/1996 cut-off events. For 570969/570969 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 12670 event pairs, 51 based on Foata normal form. 2/1994 useless extension candidates. Maximal degree in co-relation 22126. Up to 1669 conditions per place. [2024-06-28 03:02:19,835 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 467 selfloop transitions, 80 changer transitions 0/550 dead transitions. [2024-06-28 03:02:19,835 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 505 places, 550 transitions, 9986 flow [2024-06-28 03:02:19,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:02:19,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:02:19,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-28 03:02:19,836 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835227272727273 [2024-06-28 03:02:19,836 INFO L175 Difference]: Start difference. First operand has 495 places, 538 transitions, 8820 flow. Second operand 11 states and 135 transitions. [2024-06-28 03:02:19,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 505 places, 550 transitions, 9986 flow [2024-06-28 03:02:22,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 498 places, 550 transitions, 9419 flow, removed 53 selfloop flow, removed 7 redundant places. [2024-06-28 03:02:22,663 INFO L231 Difference]: Finished difference. Result has 499 places, 539 transitions, 8467 flow [2024-06-28 03:02:22,663 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=8253, PETRI_DIFFERENCE_MINUEND_PLACES=488, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=538, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=458, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8467, PETRI_PLACES=499, PETRI_TRANSITIONS=539} [2024-06-28 03:02:22,663 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 468 predicate places. [2024-06-28 03:02:22,663 INFO L495 AbstractCegarLoop]: Abstraction has has 499 places, 539 transitions, 8467 flow [2024-06-28 03:02:22,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:02:22,664 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:02:22,664 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:02:22,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2024-06-28 03:02:22,664 INFO L420 AbstractCegarLoop]: === Iteration 161 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:02:22,664 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:02:22,664 INFO L85 PathProgramCache]: Analyzing trace with hash 2067984793, now seen corresponding path program 8 times [2024-06-28 03:02:22,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:02:22,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605405075] [2024-06-28 03:02:22,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:02:22,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:02:22,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:02:23,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:02:23,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:02:23,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605405075] [2024-06-28 03:02:23,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605405075] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:02:23,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:02:23,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:02:23,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675736573] [2024-06-28 03:02:23,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:02:23,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:02:23,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:02:23,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:02:23,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:02:23,932 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 03:02:23,932 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 499 places, 539 transitions, 8467 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:02:23,932 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:02:23,932 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 03:02:23,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:02:24,599 INFO L124 PetriNetUnfolderBase]: 1070/1988 cut-off events. [2024-06-28 03:02:24,599 INFO L125 PetriNetUnfolderBase]: For 549560/549560 co-relation queries the response was YES. [2024-06-28 03:02:24,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21656 conditions, 1988 events. 1070/1988 cut-off events. For 549560/549560 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 12577 event pairs, 61 based on Foata normal form. 1/1984 useless extension candidates. Maximal degree in co-relation 21432. Up to 1164 conditions per place. [2024-06-28 03:02:24,633 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 358 selfloop transitions, 190 changer transitions 0/551 dead transitions. [2024-06-28 03:02:24,634 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 508 places, 551 transitions, 9951 flow [2024-06-28 03:02:24,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:02:24,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:02:24,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 137 transitions. [2024-06-28 03:02:24,634 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.428125 [2024-06-28 03:02:24,634 INFO L175 Difference]: Start difference. First operand has 499 places, 539 transitions, 8467 flow. Second operand 10 states and 137 transitions. [2024-06-28 03:02:24,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 508 places, 551 transitions, 9951 flow [2024-06-28 03:02:27,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 499 places, 551 transitions, 9717 flow, removed 38 selfloop flow, removed 9 redundant places. [2024-06-28 03:02:27,343 INFO L231 Difference]: Finished difference. Result has 500 places, 539 transitions, 8619 flow [2024-06-28 03:02:27,343 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=8233, PETRI_DIFFERENCE_MINUEND_PLACES=490, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=539, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=190, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=349, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8619, PETRI_PLACES=500, PETRI_TRANSITIONS=539} [2024-06-28 03:02:27,343 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 469 predicate places. [2024-06-28 03:02:27,343 INFO L495 AbstractCegarLoop]: Abstraction has has 500 places, 539 transitions, 8619 flow [2024-06-28 03:02:27,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:02:27,344 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:02:27,344 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:02:27,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2024-06-28 03:02:27,344 INFO L420 AbstractCegarLoop]: === Iteration 162 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:02:27,344 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:02:27,344 INFO L85 PathProgramCache]: Analyzing trace with hash 2068224113, now seen corresponding path program 16 times [2024-06-28 03:02:27,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:02:27,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110437013] [2024-06-28 03:02:27,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:02:27,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:02:27,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:02:28,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:02:28,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:02:28,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110437013] [2024-06-28 03:02:28,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110437013] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:02:28,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:02:28,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:02:28,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155625733] [2024-06-28 03:02:28,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:02:28,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:02:28,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:02:28,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:02:28,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:02:28,887 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 03:02:28,887 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 500 places, 539 transitions, 8619 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:02:28,887 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:02:28,887 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 03:02:28,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:02:29,603 INFO L124 PetriNetUnfolderBase]: 1067/1989 cut-off events. [2024-06-28 03:02:29,603 INFO L125 PetriNetUnfolderBase]: For 541486/541486 co-relation queries the response was YES. [2024-06-28 03:02:29,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21472 conditions, 1989 events. 1067/1989 cut-off events. For 541486/541486 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 12632 event pairs, 51 based on Foata normal form. 2/1987 useless extension candidates. Maximal degree in co-relation 21247. Up to 1659 conditions per place. [2024-06-28 03:02:29,637 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 466 selfloop transitions, 81 changer transitions 0/550 dead transitions. [2024-06-28 03:02:29,637 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 510 places, 550 transitions, 9737 flow [2024-06-28 03:02:29,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:02:29,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:02:29,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-28 03:02:29,638 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3806818181818182 [2024-06-28 03:02:29,638 INFO L175 Difference]: Start difference. First operand has 500 places, 539 transitions, 8619 flow. Second operand 11 states and 134 transitions. [2024-06-28 03:02:29,638 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 510 places, 550 transitions, 9737 flow [2024-06-28 03:02:32,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 501 places, 550 transitions, 9307 flow, removed 23 selfloop flow, removed 9 redundant places. [2024-06-28 03:02:32,191 INFO L231 Difference]: Finished difference. Result has 502 places, 539 transitions, 8355 flow [2024-06-28 03:02:32,191 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=8189, PETRI_DIFFERENCE_MINUEND_PLACES=491, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=539, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=458, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8355, PETRI_PLACES=502, PETRI_TRANSITIONS=539} [2024-06-28 03:02:32,191 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 471 predicate places. [2024-06-28 03:02:32,191 INFO L495 AbstractCegarLoop]: Abstraction has has 502 places, 539 transitions, 8355 flow [2024-06-28 03:02:32,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:02:32,191 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:02:32,191 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:02:32,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2024-06-28 03:02:32,192 INFO L420 AbstractCegarLoop]: === Iteration 163 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:02:32,192 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:02:32,192 INFO L85 PathProgramCache]: Analyzing trace with hash 295671475, now seen corresponding path program 28 times [2024-06-28 03:02:32,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:02:32,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463814963] [2024-06-28 03:02:32,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:02:32,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:02:32,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:02:33,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:02:33,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:02:33,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463814963] [2024-06-28 03:02:33,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463814963] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:02:33,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:02:33,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:02:33,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052651562] [2024-06-28 03:02:33,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:02:33,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:02:33,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:02:33,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:02:33,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:02:33,322 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 03:02:33,323 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 502 places, 539 transitions, 8355 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:02:33,323 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:02:33,323 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 03:02:33,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:02:34,038 INFO L124 PetriNetUnfolderBase]: 1065/1982 cut-off events. [2024-06-28 03:02:34,038 INFO L125 PetriNetUnfolderBase]: For 515432/515432 co-relation queries the response was YES. [2024-06-28 03:02:34,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20929 conditions, 1982 events. 1065/1982 cut-off events. For 515432/515432 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 12593 event pairs, 57 based on Foata normal form. 1/1978 useless extension candidates. Maximal degree in co-relation 20703. Up to 1605 conditions per place. [2024-06-28 03:02:34,073 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 451 selfloop transitions, 96 changer transitions 0/550 dead transitions. [2024-06-28 03:02:34,073 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 512 places, 550 transitions, 9793 flow [2024-06-28 03:02:34,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:02:34,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:02:34,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 144 transitions. [2024-06-28 03:02:34,074 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-06-28 03:02:34,074 INFO L175 Difference]: Start difference. First operand has 502 places, 539 transitions, 8355 flow. Second operand 11 states and 144 transitions. [2024-06-28 03:02:34,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 512 places, 550 transitions, 9793 flow [2024-06-28 03:02:36,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 502 places, 550 transitions, 9559 flow, removed 33 selfloop flow, removed 10 redundant places. [2024-06-28 03:02:36,844 INFO L231 Difference]: Finished difference. Result has 503 places, 539 transitions, 8318 flow [2024-06-28 03:02:36,844 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=8121, PETRI_DIFFERENCE_MINUEND_PLACES=492, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=539, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=443, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8318, PETRI_PLACES=503, PETRI_TRANSITIONS=539} [2024-06-28 03:02:36,845 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 472 predicate places. [2024-06-28 03:02:36,845 INFO L495 AbstractCegarLoop]: Abstraction has has 503 places, 539 transitions, 8318 flow [2024-06-28 03:02:36,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:02:36,845 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:02:36,845 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:02:36,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2024-06-28 03:02:36,845 INFO L420 AbstractCegarLoop]: === Iteration 164 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:02:36,845 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:02:36,845 INFO L85 PathProgramCache]: Analyzing trace with hash 295671723, now seen corresponding path program 9 times [2024-06-28 03:02:36,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:02:36,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300830216] [2024-06-28 03:02:36,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:02:36,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:02:36,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:02:38,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:02:38,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:02:38,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300830216] [2024-06-28 03:02:38,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300830216] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:02:38,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:02:38,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:02:38,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170272309] [2024-06-28 03:02:38,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:02:38,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:02:38,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:02:38,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:02:38,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:02:38,428 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 03:02:38,428 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 503 places, 539 transitions, 8318 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:02:38,428 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:02:38,428 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 03:02:38,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:02:39,100 INFO L124 PetriNetUnfolderBase]: 1063/1979 cut-off events. [2024-06-28 03:02:39,100 INFO L125 PetriNetUnfolderBase]: For 508500/508500 co-relation queries the response was YES. [2024-06-28 03:02:39,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20729 conditions, 1979 events. 1063/1979 cut-off events. For 508500/508500 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 12560 event pairs, 58 based on Foata normal form. 1/1975 useless extension candidates. Maximal degree in co-relation 20502. Up to 1615 conditions per place. [2024-06-28 03:02:39,134 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 464 selfloop transitions, 83 changer transitions 0/550 dead transitions. [2024-06-28 03:02:39,134 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 513 places, 550 transitions, 9438 flow [2024-06-28 03:02:39,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:02:39,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:02:39,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 142 transitions. [2024-06-28 03:02:39,134 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4034090909090909 [2024-06-28 03:02:39,134 INFO L175 Difference]: Start difference. First operand has 503 places, 539 transitions, 8318 flow. Second operand 11 states and 142 transitions. [2024-06-28 03:02:39,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 513 places, 550 transitions, 9438 flow [2024-06-28 03:02:41,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 504 places, 550 transitions, 9213 flow, removed 19 selfloop flow, removed 9 redundant places. [2024-06-28 03:02:41,801 INFO L231 Difference]: Finished difference. Result has 505 places, 539 transitions, 8264 flow [2024-06-28 03:02:41,801 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=8093, PETRI_DIFFERENCE_MINUEND_PLACES=494, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=539, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=456, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8264, PETRI_PLACES=505, PETRI_TRANSITIONS=539} [2024-06-28 03:02:41,801 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 474 predicate places. [2024-06-28 03:02:41,801 INFO L495 AbstractCegarLoop]: Abstraction has has 505 places, 539 transitions, 8264 flow [2024-06-28 03:02:41,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:02:41,801 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:02:41,801 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:02:41,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2024-06-28 03:02:41,801 INFO L420 AbstractCegarLoop]: === Iteration 165 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:02:41,802 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:02:41,802 INFO L85 PathProgramCache]: Analyzing trace with hash 1698357927, now seen corresponding path program 17 times [2024-06-28 03:02:41,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:02:41,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646531752] [2024-06-28 03:02:41,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:02:41,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:02:41,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:02:43,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:02:43,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:02:43,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646531752] [2024-06-28 03:02:43,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646531752] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:02:43,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:02:43,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:02:43,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992249357] [2024-06-28 03:02:43,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:02:43,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:02:43,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:02:43,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:02:43,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:02:43,368 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 03:02:43,368 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 505 places, 539 transitions, 8264 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:02:43,368 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:02:43,368 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 03:02:43,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:02:44,038 INFO L124 PetriNetUnfolderBase]: 1067/1987 cut-off events. [2024-06-28 03:02:44,038 INFO L125 PetriNetUnfolderBase]: For 528890/528890 co-relation queries the response was YES. [2024-06-28 03:02:44,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20838 conditions, 1987 events. 1067/1987 cut-off events. For 528890/528890 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 12626 event pairs, 52 based on Foata normal form. 2/1985 useless extension candidates. Maximal degree in co-relation 20610. Up to 1748 conditions per place. [2024-06-28 03:02:44,074 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 503 selfloop transitions, 45 changer transitions 0/551 dead transitions. [2024-06-28 03:02:44,074 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 515 places, 551 transitions, 9444 flow [2024-06-28 03:02:44,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:02:44,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:02:44,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-28 03:02:44,074 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-28 03:02:44,074 INFO L175 Difference]: Start difference. First operand has 505 places, 539 transitions, 8264 flow. Second operand 11 states and 132 transitions. [2024-06-28 03:02:44,075 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 515 places, 551 transitions, 9444 flow [2024-06-28 03:02:47,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 505 places, 551 transitions, 9266 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-28 03:02:47,029 INFO L231 Difference]: Finished difference. Result has 506 places, 540 transitions, 8242 flow [2024-06-28 03:02:47,029 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=8086, PETRI_DIFFERENCE_MINUEND_PLACES=495, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=539, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=494, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8242, PETRI_PLACES=506, PETRI_TRANSITIONS=540} [2024-06-28 03:02:47,029 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 475 predicate places. [2024-06-28 03:02:47,029 INFO L495 AbstractCegarLoop]: Abstraction has has 506 places, 540 transitions, 8242 flow [2024-06-28 03:02:47,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:02:47,030 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:02:47,030 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:02:47,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2024-06-28 03:02:47,030 INFO L420 AbstractCegarLoop]: === Iteration 166 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:02:47,031 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:02:47,031 INFO L85 PathProgramCache]: Analyzing trace with hash 2067978035, now seen corresponding path program 29 times [2024-06-28 03:02:47,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:02:47,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426766822] [2024-06-28 03:02:47,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:02:47,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:02:47,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:02:48,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:02:48,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:02:48,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426766822] [2024-06-28 03:02:48,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426766822] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:02:48,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:02:48,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:02:48,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426188529] [2024-06-28 03:02:48,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:02:48,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:02:48,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:02:48,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:02:48,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:02:48,375 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 03:02:48,376 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 506 places, 540 transitions, 8242 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:02:48,376 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:02:48,376 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 03:02:48,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:02:49,223 INFO L124 PetriNetUnfolderBase]: 1065/1984 cut-off events. [2024-06-28 03:02:49,223 INFO L125 PetriNetUnfolderBase]: For 508370/508370 co-relation queries the response was YES. [2024-06-28 03:02:49,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20585 conditions, 1984 events. 1065/1984 cut-off events. For 508370/508370 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 12621 event pairs, 57 based on Foata normal form. 1/1980 useless extension candidates. Maximal degree in co-relation 20356. Up to 1209 conditions per place. [2024-06-28 03:02:49,254 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 319 selfloop transitions, 236 changer transitions 0/558 dead transitions. [2024-06-28 03:02:49,254 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 516 places, 558 transitions, 10236 flow [2024-06-28 03:02:49,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:02:49,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:02:49,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 143 transitions. [2024-06-28 03:02:49,255 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-28 03:02:49,255 INFO L175 Difference]: Start difference. First operand has 506 places, 540 transitions, 8242 flow. Second operand 11 states and 143 transitions. [2024-06-28 03:02:49,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 516 places, 558 transitions, 10236 flow [2024-06-28 03:02:51,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 507 places, 558 transitions, 10090 flow, removed 29 selfloop flow, removed 9 redundant places. [2024-06-28 03:02:51,966 INFO L231 Difference]: Finished difference. Result has 509 places, 546 transitions, 8804 flow [2024-06-28 03:02:51,967 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=8096, PETRI_DIFFERENCE_MINUEND_PLACES=497, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=540, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=231, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=305, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8804, PETRI_PLACES=509, PETRI_TRANSITIONS=546} [2024-06-28 03:02:51,967 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 478 predicate places. [2024-06-28 03:02:51,967 INFO L495 AbstractCegarLoop]: Abstraction has has 509 places, 546 transitions, 8804 flow [2024-06-28 03:02:51,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:02:51,967 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:02:51,967 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:02:51,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2024-06-28 03:02:51,968 INFO L420 AbstractCegarLoop]: === Iteration 167 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:02:51,968 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:02:51,968 INFO L85 PathProgramCache]: Analyzing trace with hash -1321469209, now seen corresponding path program 18 times [2024-06-28 03:02:51,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:02:51,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40916204] [2024-06-28 03:02:51,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:02:51,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:02:51,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:02:53,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:02:53,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:02:53,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40916204] [2024-06-28 03:02:53,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40916204] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:02:53,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:02:53,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:02:53,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100873626] [2024-06-28 03:02:53,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:02:53,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:02:53,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:02:53,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:02:53,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:02:53,335 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 03:02:53,335 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 509 places, 546 transitions, 8804 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:02:53,335 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:02:53,335 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 03:02:53,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:02:54,015 INFO L124 PetriNetUnfolderBase]: 1069/1990 cut-off events. [2024-06-28 03:02:54,015 INFO L125 PetriNetUnfolderBase]: For 529693/529693 co-relation queries the response was YES. [2024-06-28 03:02:54,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21100 conditions, 1990 events. 1069/1990 cut-off events. For 529693/529693 co-relation queries the response was YES. Maximal size of possible extension queue 243. Compared 12658 event pairs, 50 based on Foata normal form. 2/1988 useless extension candidates. Maximal degree in co-relation 20869. Up to 1706 conditions per place. [2024-06-28 03:02:54,047 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 501 selfloop transitions, 56 changer transitions 0/560 dead transitions. [2024-06-28 03:02:54,048 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 519 places, 560 transitions, 10336 flow [2024-06-28 03:02:54,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:02:54,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:02:54,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-28 03:02:54,048 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835227272727273 [2024-06-28 03:02:54,048 INFO L175 Difference]: Start difference. First operand has 509 places, 546 transitions, 8804 flow. Second operand 11 states and 135 transitions. [2024-06-28 03:02:54,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 519 places, 560 transitions, 10336 flow [2024-06-28 03:02:56,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 511 places, 560 transitions, 9841 flow, removed 59 selfloop flow, removed 8 redundant places. [2024-06-28 03:02:56,786 INFO L231 Difference]: Finished difference. Result has 512 places, 547 transitions, 8487 flow [2024-06-28 03:02:56,787 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=8309, PETRI_DIFFERENCE_MINUEND_PLACES=501, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=546, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=491, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8487, PETRI_PLACES=512, PETRI_TRANSITIONS=547} [2024-06-28 03:02:56,787 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 481 predicate places. [2024-06-28 03:02:56,787 INFO L495 AbstractCegarLoop]: Abstraction has has 512 places, 547 transitions, 8487 flow [2024-06-28 03:02:56,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:02:56,787 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:02:56,787 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:02:56,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2024-06-28 03:02:56,787 INFO L420 AbstractCegarLoop]: === Iteration 168 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:02:56,787 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:02:56,787 INFO L85 PathProgramCache]: Analyzing trace with hash 2068215185, now seen corresponding path program 30 times [2024-06-28 03:02:56,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:02:56,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561013820] [2024-06-28 03:02:56,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:02:56,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:02:56,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:02:57,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:02:57,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:02:57,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561013820] [2024-06-28 03:02:57,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561013820] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:02:57,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:02:57,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:02:57,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796626471] [2024-06-28 03:02:57,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:02:57,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:02:57,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:02:57,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:02:57,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:02:57,942 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 03:02:57,942 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 512 places, 547 transitions, 8487 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:02:57,942 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:02:57,942 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 03:02:57,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:02:58,677 INFO L124 PetriNetUnfolderBase]: 1070/1992 cut-off events. [2024-06-28 03:02:58,677 INFO L125 PetriNetUnfolderBase]: For 518226/518226 co-relation queries the response was YES. [2024-06-28 03:02:58,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20641 conditions, 1992 events. 1070/1992 cut-off events. For 518226/518226 co-relation queries the response was YES. Maximal size of possible extension queue 243. Compared 12649 event pairs, 57 based on Foata normal form. 2/1989 useless extension candidates. Maximal degree in co-relation 20409. Up to 830 conditions per place. [2024-06-28 03:02:58,712 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 314 selfloop transitions, 247 changer transitions 0/564 dead transitions. [2024-06-28 03:02:58,712 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 522 places, 564 transitions, 11044 flow [2024-06-28 03:02:58,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:02:58,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:02:58,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 154 transitions. [2024-06-28 03:02:58,713 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-06-28 03:02:58,713 INFO L175 Difference]: Start difference. First operand has 512 places, 547 transitions, 8487 flow. Second operand 11 states and 154 transitions. [2024-06-28 03:02:58,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 522 places, 564 transitions, 11044 flow [2024-06-28 03:03:01,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 512 places, 564 transitions, 10689 flow, removed 79 selfloop flow, removed 10 redundant places. [2024-06-28 03:03:01,290 INFO L231 Difference]: Finished difference. Result has 513 places, 549 transitions, 8712 flow [2024-06-28 03:03:01,290 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=8142, PETRI_DIFFERENCE_MINUEND_PLACES=502, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=547, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=245, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=302, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8712, PETRI_PLACES=513, PETRI_TRANSITIONS=549} [2024-06-28 03:03:01,291 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 482 predicate places. [2024-06-28 03:03:01,291 INFO L495 AbstractCegarLoop]: Abstraction has has 513 places, 549 transitions, 8712 flow [2024-06-28 03:03:01,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:01,291 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:03:01,291 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:03:01,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2024-06-28 03:03:01,291 INFO L420 AbstractCegarLoop]: === Iteration 169 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:03:01,291 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:03:01,291 INFO L85 PathProgramCache]: Analyzing trace with hash -1321768049, now seen corresponding path program 10 times [2024-06-28 03:03:01,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:03:01,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801834126] [2024-06-28 03:03:01,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:03:01,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:03:01,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:03:02,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:03:02,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:03:02,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801834126] [2024-06-28 03:03:02,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801834126] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:03:02,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:03:02,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:03:02,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632110909] [2024-06-28 03:03:02,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:03:02,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:03:02,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:03:02,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:03:02,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:03:02,800 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 03:03:02,800 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 513 places, 549 transitions, 8712 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:02,800 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:03:02,800 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 03:03:02,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:03:03,515 INFO L124 PetriNetUnfolderBase]: 1078/2005 cut-off events. [2024-06-28 03:03:03,515 INFO L125 PetriNetUnfolderBase]: For 526094/526094 co-relation queries the response was YES. [2024-06-28 03:03:03,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21011 conditions, 2005 events. 1078/2005 cut-off events. For 526094/526094 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 12766 event pairs, 60 based on Foata normal form. 1/2001 useless extension candidates. Maximal degree in co-relation 20780. Up to 1636 conditions per place. [2024-06-28 03:03:03,550 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 474 selfloop transitions, 88 changer transitions 0/565 dead transitions. [2024-06-28 03:03:03,550 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 523 places, 565 transitions, 10352 flow [2024-06-28 03:03:03,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:03:03,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:03:03,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 145 transitions. [2024-06-28 03:03:03,551 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4119318181818182 [2024-06-28 03:03:03,551 INFO L175 Difference]: Start difference. First operand has 513 places, 549 transitions, 8712 flow. Second operand 11 states and 145 transitions. [2024-06-28 03:03:03,551 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 523 places, 565 transitions, 10352 flow [2024-06-28 03:03:06,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 513 places, 565 transitions, 9704 flow, removed 44 selfloop flow, removed 10 redundant places. [2024-06-28 03:03:06,349 INFO L231 Difference]: Finished difference. Result has 514 places, 553 transitions, 8405 flow [2024-06-28 03:03:06,349 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=8068, PETRI_DIFFERENCE_MINUEND_PLACES=503, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=549, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=463, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8405, PETRI_PLACES=514, PETRI_TRANSITIONS=553} [2024-06-28 03:03:06,350 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 483 predicate places. [2024-06-28 03:03:06,350 INFO L495 AbstractCegarLoop]: Abstraction has has 514 places, 553 transitions, 8405 flow [2024-06-28 03:03:06,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:06,350 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:03:06,350 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:03:06,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2024-06-28 03:03:06,350 INFO L420 AbstractCegarLoop]: === Iteration 170 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:03:06,350 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:03:06,350 INFO L85 PathProgramCache]: Analyzing trace with hash -1321776667, now seen corresponding path program 31 times [2024-06-28 03:03:06,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:03:06,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942920813] [2024-06-28 03:03:06,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:03:06,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:03:06,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:03:07,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:03:07,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:03:07,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942920813] [2024-06-28 03:03:07,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942920813] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:03:07,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:03:07,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:03:07,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229970662] [2024-06-28 03:03:07,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:03:07,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:03:07,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:03:07,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:03:07,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:03:07,596 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 03:03:07,596 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 514 places, 553 transitions, 8405 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:07,596 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:03:07,596 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 03:03:07,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:03:08,307 INFO L124 PetriNetUnfolderBase]: 1076/2000 cut-off events. [2024-06-28 03:03:08,307 INFO L125 PetriNetUnfolderBase]: For 514876/514876 co-relation queries the response was YES. [2024-06-28 03:03:08,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20220 conditions, 2000 events. 1076/2000 cut-off events. For 514876/514876 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 12718 event pairs, 57 based on Foata normal form. 1/1996 useless extension candidates. Maximal degree in co-relation 19990. Up to 1628 conditions per place. [2024-06-28 03:03:08,341 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 460 selfloop transitions, 100 changer transitions 0/563 dead transitions. [2024-06-28 03:03:08,341 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 524 places, 563 transitions, 9547 flow [2024-06-28 03:03:08,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:03:08,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:03:08,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 141 transitions. [2024-06-28 03:03:08,341 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4005681818181818 [2024-06-28 03:03:08,342 INFO L175 Difference]: Start difference. First operand has 514 places, 553 transitions, 8405 flow. Second operand 11 states and 141 transitions. [2024-06-28 03:03:08,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 524 places, 563 transitions, 9547 flow [2024-06-28 03:03:10,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 516 places, 563 transitions, 9253 flow, removed 74 selfloop flow, removed 8 redundant places. [2024-06-28 03:03:10,736 INFO L231 Difference]: Finished difference. Result has 517 places, 553 transitions, 8316 flow [2024-06-28 03:03:10,736 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=8111, PETRI_DIFFERENCE_MINUEND_PLACES=506, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=553, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=453, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8316, PETRI_PLACES=517, PETRI_TRANSITIONS=553} [2024-06-28 03:03:10,736 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 486 predicate places. [2024-06-28 03:03:10,736 INFO L495 AbstractCegarLoop]: Abstraction has has 517 places, 553 transitions, 8316 flow [2024-06-28 03:03:10,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:10,736 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:03:10,736 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:03:10,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2024-06-28 03:03:10,737 INFO L420 AbstractCegarLoop]: === Iteration 171 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:03:10,737 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:03:10,737 INFO L85 PathProgramCache]: Analyzing trace with hash -1321776419, now seen corresponding path program 11 times [2024-06-28 03:03:10,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:03:10,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302324902] [2024-06-28 03:03:10,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:03:10,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:03:10,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:03:12,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:03:12,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:03:12,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302324902] [2024-06-28 03:03:12,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302324902] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:03:12,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:03:12,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:03:12,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953289140] [2024-06-28 03:03:12,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:03:12,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:03:12,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:03:12,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:03:12,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:03:12,214 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 03:03:12,214 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 517 places, 553 transitions, 8316 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:12,214 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:03:12,214 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 03:03:12,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:03:12,860 INFO L124 PetriNetUnfolderBase]: 1074/1997 cut-off events. [2024-06-28 03:03:12,860 INFO L125 PetriNetUnfolderBase]: For 505232/505232 co-relation queries the response was YES. [2024-06-28 03:03:12,887 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19969 conditions, 1997 events. 1074/1997 cut-off events. For 505232/505232 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 12706 event pairs, 60 based on Foata normal form. 1/1993 useless extension candidates. Maximal degree in co-relation 19738. Up to 1637 conditions per place. [2024-06-28 03:03:12,894 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 476 selfloop transitions, 85 changer transitions 0/564 dead transitions. [2024-06-28 03:03:12,894 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 527 places, 564 transitions, 9464 flow [2024-06-28 03:03:12,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:03:12,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:03:12,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 142 transitions. [2024-06-28 03:03:12,895 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4034090909090909 [2024-06-28 03:03:12,895 INFO L175 Difference]: Start difference. First operand has 517 places, 553 transitions, 8316 flow. Second operand 11 states and 142 transitions. [2024-06-28 03:03:12,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 527 places, 564 transitions, 9464 flow [2024-06-28 03:03:15,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 516 places, 564 transitions, 9224 flow, removed 22 selfloop flow, removed 11 redundant places. [2024-06-28 03:03:15,443 INFO L231 Difference]: Finished difference. Result has 517 places, 553 transitions, 8251 flow [2024-06-28 03:03:15,444 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=8076, PETRI_DIFFERENCE_MINUEND_PLACES=506, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=553, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=468, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8251, PETRI_PLACES=517, PETRI_TRANSITIONS=553} [2024-06-28 03:03:15,444 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 486 predicate places. [2024-06-28 03:03:15,444 INFO L495 AbstractCegarLoop]: Abstraction has has 517 places, 553 transitions, 8251 flow [2024-06-28 03:03:15,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:15,444 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:03:15,444 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:03:15,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2024-06-28 03:03:15,444 INFO L420 AbstractCegarLoop]: === Iteration 172 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:03:15,445 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:03:15,445 INFO L85 PathProgramCache]: Analyzing trace with hash -1321479439, now seen corresponding path program 19 times [2024-06-28 03:03:15,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:03:15,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129346892] [2024-06-28 03:03:15,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:03:15,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:03:15,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:03:16,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:03:16,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:03:16,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129346892] [2024-06-28 03:03:16,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129346892] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:03:16,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:03:16,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:03:16,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784764385] [2024-06-28 03:03:16,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:03:16,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:03:16,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:03:16,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:03:16,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:03:16,827 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 03:03:16,827 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 517 places, 553 transitions, 8251 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:16,827 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:03:16,827 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 03:03:16,828 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:03:17,523 INFO L124 PetriNetUnfolderBase]: 1071/1996 cut-off events. [2024-06-28 03:03:17,524 INFO L125 PetriNetUnfolderBase]: For 496527/496527 co-relation queries the response was YES. [2024-06-28 03:03:17,545 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19547 conditions, 1996 events. 1071/1996 cut-off events. For 496527/496527 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 12719 event pairs, 51 based on Foata normal form. 2/1994 useless extension candidates. Maximal degree in co-relation 19315. Up to 1745 conditions per place. [2024-06-28 03:03:17,552 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 509 selfloop transitions, 52 changer transitions 0/564 dead transitions. [2024-06-28 03:03:17,552 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 527 places, 564 transitions, 9397 flow [2024-06-28 03:03:17,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:03:17,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:03:17,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-28 03:03:17,553 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3778409090909091 [2024-06-28 03:03:17,553 INFO L175 Difference]: Start difference. First operand has 517 places, 553 transitions, 8251 flow. Second operand 11 states and 133 transitions. [2024-06-28 03:03:17,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 527 places, 564 transitions, 9397 flow [2024-06-28 03:03:19,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 517 places, 564 transitions, 9182 flow, removed 21 selfloop flow, removed 10 redundant places. [2024-06-28 03:03:19,849 INFO L231 Difference]: Finished difference. Result has 518 places, 553 transitions, 8144 flow [2024-06-28 03:03:19,849 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=8036, PETRI_DIFFERENCE_MINUEND_PLACES=507, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=553, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=501, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8144, PETRI_PLACES=518, PETRI_TRANSITIONS=553} [2024-06-28 03:03:19,850 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 487 predicate places. [2024-06-28 03:03:19,850 INFO L495 AbstractCegarLoop]: Abstraction has has 518 places, 553 transitions, 8144 flow [2024-06-28 03:03:19,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:19,850 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:03:19,850 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:03:19,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2024-06-28 03:03:19,850 INFO L420 AbstractCegarLoop]: === Iteration 173 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:03:19,850 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:03:19,850 INFO L85 PathProgramCache]: Analyzing trace with hash -1321479749, now seen corresponding path program 12 times [2024-06-28 03:03:19,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:03:19,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739037978] [2024-06-28 03:03:19,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:03:19,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:03:19,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:03:20,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:03:20,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:03:20,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739037978] [2024-06-28 03:03:20,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739037978] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:03:20,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:03:20,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:03:20,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991848788] [2024-06-28 03:03:20,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:03:20,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:03:20,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:03:20,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:03:20,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:03:21,075 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 03:03:21,075 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 518 places, 553 transitions, 8144 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:21,076 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:03:21,076 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 03:03:21,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:03:21,747 INFO L124 PetriNetUnfolderBase]: 1069/1991 cut-off events. [2024-06-28 03:03:21,747 INFO L125 PetriNetUnfolderBase]: For 471812/471812 co-relation queries the response was YES. [2024-06-28 03:03:21,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19216 conditions, 1991 events. 1069/1991 cut-off events. For 471812/471812 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 12678 event pairs, 56 based on Foata normal form. 1/1987 useless extension candidates. Maximal degree in co-relation 18983. Up to 1606 conditions per place. [2024-06-28 03:03:21,778 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 452 selfloop transitions, 108 changer transitions 0/563 dead transitions. [2024-06-28 03:03:21,778 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 528 places, 563 transitions, 9286 flow [2024-06-28 03:03:21,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:03:21,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:03:21,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 144 transitions. [2024-06-28 03:03:21,779 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-06-28 03:03:21,779 INFO L175 Difference]: Start difference. First operand has 518 places, 553 transitions, 8144 flow. Second operand 11 states and 144 transitions. [2024-06-28 03:03:21,779 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 528 places, 563 transitions, 9286 flow [2024-06-28 03:03:24,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 517 places, 563 transitions, 9067 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-28 03:03:24,237 INFO L231 Difference]: Finished difference. Result has 518 places, 553 transitions, 8146 flow [2024-06-28 03:03:24,237 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7925, PETRI_DIFFERENCE_MINUEND_PLACES=507, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=553, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=445, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8146, PETRI_PLACES=518, PETRI_TRANSITIONS=553} [2024-06-28 03:03:24,237 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 487 predicate places. [2024-06-28 03:03:24,238 INFO L495 AbstractCegarLoop]: Abstraction has has 518 places, 553 transitions, 8146 flow [2024-06-28 03:03:24,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:24,238 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:03:24,238 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:03:24,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2024-06-28 03:03:24,238 INFO L420 AbstractCegarLoop]: === Iteration 174 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:03:24,238 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:03:24,238 INFO L85 PathProgramCache]: Analyzing trace with hash -1386981885, now seen corresponding path program 32 times [2024-06-28 03:03:24,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:03:24,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414004445] [2024-06-28 03:03:24,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:03:24,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:03:24,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:03:25,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:03:25,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:03:25,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414004445] [2024-06-28 03:03:25,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414004445] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:03:25,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:03:25,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:03:25,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907903836] [2024-06-28 03:03:25,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:03:25,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:03:25,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:03:25,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:03:25,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:03:25,460 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 03:03:25,460 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 518 places, 553 transitions, 8146 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:25,460 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:03:25,460 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 03:03:25,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:03:26,272 INFO L124 PetriNetUnfolderBase]: 1182/2187 cut-off events. [2024-06-28 03:03:26,272 INFO L125 PetriNetUnfolderBase]: For 601234/601234 co-relation queries the response was YES. [2024-06-28 03:03:26,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22247 conditions, 2187 events. 1182/2187 cut-off events. For 601234/601234 co-relation queries the response was YES. Maximal size of possible extension queue 262. Compared 14009 event pairs, 47 based on Foata normal form. 2/2187 useless extension candidates. Maximal degree in co-relation 22013. Up to 1609 conditions per place. [2024-06-28 03:03:26,309 INFO L140 encePairwiseOnDemand]: 18/32 looper letters, 532 selfloop transitions, 132 changer transitions 0/667 dead transitions. [2024-06-28 03:03:26,309 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 529 places, 667 transitions, 12121 flow [2024-06-28 03:03:26,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:03:26,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:03:26,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 162 transitions. [2024-06-28 03:03:26,310 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.421875 [2024-06-28 03:03:26,310 INFO L175 Difference]: Start difference. First operand has 518 places, 553 transitions, 8146 flow. Second operand 12 states and 162 transitions. [2024-06-28 03:03:26,310 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 529 places, 667 transitions, 12121 flow [2024-06-28 03:03:29,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 513 places, 667 transitions, 11268 flow, removed 59 selfloop flow, removed 16 redundant places. [2024-06-28 03:03:29,303 INFO L231 Difference]: Finished difference. Result has 518 places, 605 transitions, 8941 flow [2024-06-28 03:03:29,303 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7385, PETRI_DIFFERENCE_MINUEND_PLACES=502, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=553, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=423, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8941, PETRI_PLACES=518, PETRI_TRANSITIONS=605} [2024-06-28 03:03:29,304 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 487 predicate places. [2024-06-28 03:03:29,304 INFO L495 AbstractCegarLoop]: Abstraction has has 518 places, 605 transitions, 8941 flow [2024-06-28 03:03:29,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:29,304 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:03:29,304 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:03:29,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2024-06-28 03:03:29,304 INFO L420 AbstractCegarLoop]: === Iteration 175 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:03:29,304 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:03:29,304 INFO L85 PathProgramCache]: Analyzing trace with hash -1377821923, now seen corresponding path program 1 times [2024-06-28 03:03:29,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:03:29,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423267701] [2024-06-28 03:03:29,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:03:29,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:03:29,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:03:30,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:03:30,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:03:30,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423267701] [2024-06-28 03:03:30,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423267701] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:03:30,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:03:30,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:03:30,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807065993] [2024-06-28 03:03:30,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:03:30,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:03:30,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:03:30,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:03:30,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:03:30,449 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 03:03:30,449 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 518 places, 605 transitions, 8941 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:30,449 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:03:30,449 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 03:03:30,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:03:31,318 INFO L124 PetriNetUnfolderBase]: 1186/2199 cut-off events. [2024-06-28 03:03:31,319 INFO L125 PetriNetUnfolderBase]: For 609498/609498 co-relation queries the response was YES. [2024-06-28 03:03:31,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21850 conditions, 2199 events. 1186/2199 cut-off events. For 609498/609498 co-relation queries the response was YES. Maximal size of possible extension queue 263. Compared 14136 event pairs, 64 based on Foata normal form. 2/2199 useless extension candidates. Maximal degree in co-relation 21618. Up to 1935 conditions per place. [2024-06-28 03:03:31,355 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 594 selfloop transitions, 31 changer transitions 0/628 dead transitions. [2024-06-28 03:03:31,355 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 528 places, 628 transitions, 10293 flow [2024-06-28 03:03:31,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:03:31,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:03:31,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-28 03:03:31,356 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38636363636363635 [2024-06-28 03:03:31,356 INFO L175 Difference]: Start difference. First operand has 518 places, 605 transitions, 8941 flow. Second operand 11 states and 136 transitions. [2024-06-28 03:03:31,356 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 528 places, 628 transitions, 10293 flow [2024-06-28 03:03:34,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 523 places, 628 transitions, 10174 flow, removed 33 selfloop flow, removed 5 redundant places. [2024-06-28 03:03:34,239 INFO L231 Difference]: Finished difference. Result has 524 places, 606 transitions, 8936 flow [2024-06-28 03:03:34,239 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=8822, PETRI_DIFFERENCE_MINUEND_PLACES=513, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=605, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=574, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8936, PETRI_PLACES=524, PETRI_TRANSITIONS=606} [2024-06-28 03:03:34,239 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 493 predicate places. [2024-06-28 03:03:34,239 INFO L495 AbstractCegarLoop]: Abstraction has has 524 places, 606 transitions, 8936 flow [2024-06-28 03:03:34,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:34,239 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:03:34,239 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:03:34,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2024-06-28 03:03:34,240 INFO L420 AbstractCegarLoop]: === Iteration 176 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:03:34,240 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:03:34,240 INFO L85 PathProgramCache]: Analyzing trace with hash -496109441, now seen corresponding path program 2 times [2024-06-28 03:03:34,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:03:34,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765453348] [2024-06-28 03:03:34,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:03:34,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:03:34,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:03:35,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:03:35,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:03:35,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765453348] [2024-06-28 03:03:35,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765453348] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:03:35,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:03:35,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:03:35,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888977417] [2024-06-28 03:03:35,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:03:35,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:03:35,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:03:35,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:03:35,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:03:35,311 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 03:03:35,311 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 524 places, 606 transitions, 8936 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:35,311 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:03:35,311 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 03:03:35,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:03:36,101 INFO L124 PetriNetUnfolderBase]: 1190/2207 cut-off events. [2024-06-28 03:03:36,102 INFO L125 PetriNetUnfolderBase]: For 616173/616173 co-relation queries the response was YES. [2024-06-28 03:03:36,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21999 conditions, 2207 events. 1190/2207 cut-off events. For 616173/616173 co-relation queries the response was YES. Maximal size of possible extension queue 265. Compared 14213 event pairs, 82 based on Foata normal form. 2/2207 useless extension candidates. Maximal degree in co-relation 21765. Up to 1965 conditions per place. [2024-06-28 03:03:36,138 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 591 selfloop transitions, 33 changer transitions 0/627 dead transitions. [2024-06-28 03:03:36,139 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 534 places, 627 transitions, 10284 flow [2024-06-28 03:03:36,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:03:36,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:03:36,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-28 03:03:36,139 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38920454545454547 [2024-06-28 03:03:36,139 INFO L175 Difference]: Start difference. First operand has 524 places, 606 transitions, 8936 flow. Second operand 11 states and 137 transitions. [2024-06-28 03:03:36,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 534 places, 627 transitions, 10284 flow [2024-06-28 03:03:39,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 525 places, 627 transitions, 10180 flow, removed 22 selfloop flow, removed 9 redundant places. [2024-06-28 03:03:39,187 INFO L231 Difference]: Finished difference. Result has 526 places, 607 transitions, 8952 flow [2024-06-28 03:03:39,187 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=8832, PETRI_DIFFERENCE_MINUEND_PLACES=515, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=606, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=573, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8952, PETRI_PLACES=526, PETRI_TRANSITIONS=607} [2024-06-28 03:03:39,187 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 495 predicate places. [2024-06-28 03:03:39,187 INFO L495 AbstractCegarLoop]: Abstraction has has 526 places, 607 transitions, 8952 flow [2024-06-28 03:03:39,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:39,187 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:03:39,187 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:03:39,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2024-06-28 03:03:39,188 INFO L420 AbstractCegarLoop]: === Iteration 177 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:03:39,188 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:03:39,188 INFO L85 PathProgramCache]: Analyzing trace with hash -1434706317, now seen corresponding path program 3 times [2024-06-28 03:03:39,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:03:39,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181679746] [2024-06-28 03:03:39,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:03:39,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:03:39,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:03:40,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:03:40,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:03:40,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181679746] [2024-06-28 03:03:40,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181679746] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:03:40,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:03:40,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:03:40,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833030124] [2024-06-28 03:03:40,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:03:40,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:03:40,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:03:40,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:03:40,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:03:40,311 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 03:03:40,311 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 526 places, 607 transitions, 8952 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:40,311 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:03:40,311 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 03:03:40,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:03:41,103 INFO L124 PetriNetUnfolderBase]: 1194/2215 cut-off events. [2024-06-28 03:03:41,103 INFO L125 PetriNetUnfolderBase]: For 629621/629621 co-relation queries the response was YES. [2024-06-28 03:03:41,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22076 conditions, 2215 events. 1194/2215 cut-off events. For 629621/629621 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 14299 event pairs, 80 based on Foata normal form. 2/2215 useless extension candidates. Maximal degree in co-relation 21841. Up to 1968 conditions per place. [2024-06-28 03:03:41,140 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 594 selfloop transitions, 32 changer transitions 0/629 dead transitions. [2024-06-28 03:03:41,141 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 536 places, 629 transitions, 10308 flow [2024-06-28 03:03:41,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:03:41,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:03:41,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-28 03:03:41,141 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38920454545454547 [2024-06-28 03:03:41,141 INFO L175 Difference]: Start difference. First operand has 526 places, 607 transitions, 8952 flow. Second operand 11 states and 137 transitions. [2024-06-28 03:03:41,141 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 536 places, 629 transitions, 10308 flow [2024-06-28 03:03:44,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 527 places, 629 transitions, 10198 flow, removed 23 selfloop flow, removed 9 redundant places. [2024-06-28 03:03:44,214 INFO L231 Difference]: Finished difference. Result has 528 places, 608 transitions, 8962 flow [2024-06-28 03:03:44,214 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=8842, PETRI_DIFFERENCE_MINUEND_PLACES=517, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=607, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=575, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8962, PETRI_PLACES=528, PETRI_TRANSITIONS=608} [2024-06-28 03:03:44,214 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 497 predicate places. [2024-06-28 03:03:44,214 INFO L495 AbstractCegarLoop]: Abstraction has has 528 places, 608 transitions, 8962 flow [2024-06-28 03:03:44,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:44,214 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:03:44,214 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:03:44,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2024-06-28 03:03:44,214 INFO L420 AbstractCegarLoop]: === Iteration 178 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:03:44,215 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:03:44,215 INFO L85 PathProgramCache]: Analyzing trace with hash -1217050467, now seen corresponding path program 4 times [2024-06-28 03:03:44,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:03:44,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177325488] [2024-06-28 03:03:44,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:03:44,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:03:44,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:03:45,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:03:45,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:03:45,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177325488] [2024-06-28 03:03:45,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177325488] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:03:45,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:03:45,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:03:45,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734901256] [2024-06-28 03:03:45,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:03:45,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:03:45,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:03:45,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:03:45,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:03:45,431 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 03:03:45,431 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 528 places, 608 transitions, 8962 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:45,431 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:03:45,431 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 03:03:45,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:03:46,246 INFO L124 PetriNetUnfolderBase]: 1198/2223 cut-off events. [2024-06-28 03:03:46,246 INFO L125 PetriNetUnfolderBase]: For 636778/636778 co-relation queries the response was YES. [2024-06-28 03:03:46,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22151 conditions, 2223 events. 1198/2223 cut-off events. For 636778/636778 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 14368 event pairs, 79 based on Foata normal form. 2/2223 useless extension candidates. Maximal degree in co-relation 21915. Up to 1969 conditions per place. [2024-06-28 03:03:46,283 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 581 selfloop transitions, 43 changer transitions 0/627 dead transitions. [2024-06-28 03:03:46,283 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 538 places, 627 transitions, 10315 flow [2024-06-28 03:03:46,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:03:46,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:03:46,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-28 03:03:46,284 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3806818181818182 [2024-06-28 03:03:46,284 INFO L175 Difference]: Start difference. First operand has 528 places, 608 transitions, 8962 flow. Second operand 11 states and 134 transitions. [2024-06-28 03:03:46,284 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 538 places, 627 transitions, 10315 flow [2024-06-28 03:03:49,353 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 529 places, 627 transitions, 10205 flow, removed 24 selfloop flow, removed 9 redundant places. [2024-06-28 03:03:49,360 INFO L231 Difference]: Finished difference. Result has 531 places, 610 transitions, 9017 flow [2024-06-28 03:03:49,360 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=8852, PETRI_DIFFERENCE_MINUEND_PLACES=519, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=608, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=565, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9017, PETRI_PLACES=531, PETRI_TRANSITIONS=610} [2024-06-28 03:03:49,360 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 500 predicate places. [2024-06-28 03:03:49,360 INFO L495 AbstractCegarLoop]: Abstraction has has 531 places, 610 transitions, 9017 flow [2024-06-28 03:03:49,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:49,361 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:03:49,361 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:03:49,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2024-06-28 03:03:49,361 INFO L420 AbstractCegarLoop]: === Iteration 179 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:03:49,361 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:03:49,361 INFO L85 PathProgramCache]: Analyzing trace with hash -1217198337, now seen corresponding path program 5 times [2024-06-28 03:03:49,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:03:49,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216725726] [2024-06-28 03:03:49,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:03:49,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:03:49,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:03:50,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:03:50,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:03:50,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216725726] [2024-06-28 03:03:50,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216725726] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:03:50,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:03:50,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:03:50,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762286500] [2024-06-28 03:03:50,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:03:50,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:03:50,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:03:50,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:03:50,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:03:50,485 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 03:03:50,486 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 531 places, 610 transitions, 9017 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:50,486 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:03:50,486 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 03:03:50,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:03:51,264 INFO L124 PetriNetUnfolderBase]: 1202/2231 cut-off events. [2024-06-28 03:03:51,264 INFO L125 PetriNetUnfolderBase]: For 644247/644247 co-relation queries the response was YES. [2024-06-28 03:03:51,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22266 conditions, 2231 events. 1202/2231 cut-off events. For 644247/644247 co-relation queries the response was YES. Maximal size of possible extension queue 269. Compared 14404 event pairs, 78 based on Foata normal form. 2/2231 useless extension candidates. Maximal degree in co-relation 22028. Up to 1975 conditions per place. [2024-06-28 03:03:51,304 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 585 selfloop transitions, 41 changer transitions 0/629 dead transitions. [2024-06-28 03:03:51,304 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 541 places, 629 transitions, 10367 flow [2024-06-28 03:03:51,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:03:51,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:03:51,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-28 03:03:51,305 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3806818181818182 [2024-06-28 03:03:51,305 INFO L175 Difference]: Start difference. First operand has 531 places, 610 transitions, 9017 flow. Second operand 11 states and 134 transitions. [2024-06-28 03:03:51,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 541 places, 629 transitions, 10367 flow [2024-06-28 03:03:54,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 533 places, 629 transitions, 10241 flow, removed 25 selfloop flow, removed 8 redundant places. [2024-06-28 03:03:54,369 INFO L231 Difference]: Finished difference. Result has 534 places, 611 transitions, 9033 flow [2024-06-28 03:03:54,369 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=8891, PETRI_DIFFERENCE_MINUEND_PLACES=523, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=610, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=569, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9033, PETRI_PLACES=534, PETRI_TRANSITIONS=611} [2024-06-28 03:03:54,369 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 503 predicate places. [2024-06-28 03:03:54,369 INFO L495 AbstractCegarLoop]: Abstraction has has 534 places, 611 transitions, 9033 flow [2024-06-28 03:03:54,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:54,369 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:03:54,370 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:03:54,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2024-06-28 03:03:54,370 INFO L420 AbstractCegarLoop]: === Iteration 180 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:03:54,370 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:03:54,370 INFO L85 PathProgramCache]: Analyzing trace with hash -1290667917, now seen corresponding path program 6 times [2024-06-28 03:03:54,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:03:54,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93689002] [2024-06-28 03:03:54,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:03:54,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:03:54,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:03:55,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:03:55,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:03:55,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93689002] [2024-06-28 03:03:55,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93689002] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:03:55,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:03:55,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:03:55,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822974365] [2024-06-28 03:03:55,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:03:55,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:03:55,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:03:55,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:03:55,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:03:55,427 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 03:03:55,427 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 534 places, 611 transitions, 9033 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:55,427 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:03:55,427 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 03:03:55,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:03:56,346 INFO L124 PetriNetUnfolderBase]: 1206/2239 cut-off events. [2024-06-28 03:03:56,346 INFO L125 PetriNetUnfolderBase]: For 651742/651742 co-relation queries the response was YES. [2024-06-28 03:03:56,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22347 conditions, 2239 events. 1206/2239 cut-off events. For 651742/651742 co-relation queries the response was YES. Maximal size of possible extension queue 270. Compared 14499 event pairs, 76 based on Foata normal form. 2/2239 useless extension candidates. Maximal degree in co-relation 22108. Up to 1969 conditions per place. [2024-06-28 03:03:56,382 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 579 selfloop transitions, 47 changer transitions 0/629 dead transitions. [2024-06-28 03:03:56,382 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 544 places, 629 transitions, 10383 flow [2024-06-28 03:03:56,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:03:56,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:03:56,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-28 03:03:56,383 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38636363636363635 [2024-06-28 03:03:56,383 INFO L175 Difference]: Start difference. First operand has 534 places, 611 transitions, 9033 flow. Second operand 11 states and 136 transitions. [2024-06-28 03:03:56,383 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 544 places, 629 transitions, 10383 flow [2024-06-28 03:03:59,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 535 places, 629 transitions, 10251 flow, removed 26 selfloop flow, removed 9 redundant places. [2024-06-28 03:03:59,738 INFO L231 Difference]: Finished difference. Result has 536 places, 612 transitions, 9058 flow [2024-06-28 03:03:59,738 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=8901, PETRI_DIFFERENCE_MINUEND_PLACES=525, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=611, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=564, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9058, PETRI_PLACES=536, PETRI_TRANSITIONS=612} [2024-06-28 03:03:59,738 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 505 predicate places. [2024-06-28 03:03:59,738 INFO L495 AbstractCegarLoop]: Abstraction has has 536 places, 612 transitions, 9058 flow [2024-06-28 03:03:59,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:59,738 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:03:59,738 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:03:59,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2024-06-28 03:03:59,739 INFO L420 AbstractCegarLoop]: === Iteration 181 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:03:59,739 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:03:59,739 INFO L85 PathProgramCache]: Analyzing trace with hash -1290452436, now seen corresponding path program 1 times [2024-06-28 03:03:59,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:03:59,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640682932] [2024-06-28 03:03:59,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:03:59,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:03:59,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:04:01,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:04:01,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:04:01,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640682932] [2024-06-28 03:04:01,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640682932] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:04:01,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:04:01,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:04:01,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797344957] [2024-06-28 03:04:01,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:04:01,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:04:01,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:04:01,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:04:01,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:04:01,214 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 03:04:01,214 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 536 places, 612 transitions, 9058 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:01,214 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:04:01,214 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 03:04:01,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:04:02,107 INFO L124 PetriNetUnfolderBase]: 1222/2272 cut-off events. [2024-06-28 03:04:02,107 INFO L125 PetriNetUnfolderBase]: For 779990/779990 co-relation queries the response was YES. [2024-06-28 03:04:02,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22581 conditions, 2272 events. 1222/2272 cut-off events. For 779990/779990 co-relation queries the response was YES. Maximal size of possible extension queue 271. Compared 14739 event pairs, 77 based on Foata normal form. 10/2277 useless extension candidates. Maximal degree in co-relation 22341. Up to 1951 conditions per place. [2024-06-28 03:04:02,147 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 574 selfloop transitions, 52 changer transitions 5/634 dead transitions. [2024-06-28 03:04:02,148 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 547 places, 634 transitions, 10474 flow [2024-06-28 03:04:02,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:04:02,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:04:02,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 151 transitions. [2024-06-28 03:04:02,148 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3932291666666667 [2024-06-28 03:04:02,148 INFO L175 Difference]: Start difference. First operand has 536 places, 612 transitions, 9058 flow. Second operand 12 states and 151 transitions. [2024-06-28 03:04:02,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 547 places, 634 transitions, 10474 flow [2024-06-28 03:04:05,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 538 places, 634 transitions, 10329 flow, removed 27 selfloop flow, removed 9 redundant places. [2024-06-28 03:04:05,488 INFO L231 Difference]: Finished difference. Result has 539 places, 611 transitions, 9011 flow [2024-06-28 03:04:05,488 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=8913, PETRI_DIFFERENCE_MINUEND_PLACES=527, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=612, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=560, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9011, PETRI_PLACES=539, PETRI_TRANSITIONS=611} [2024-06-28 03:04:05,489 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 508 predicate places. [2024-06-28 03:04:05,489 INFO L495 AbstractCegarLoop]: Abstraction has has 539 places, 611 transitions, 9011 flow [2024-06-28 03:04:05,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:05,489 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:04:05,489 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:04:05,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2024-06-28 03:04:05,489 INFO L420 AbstractCegarLoop]: === Iteration 182 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:04:05,489 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:04:05,489 INFO L85 PathProgramCache]: Analyzing trace with hash -658930985, now seen corresponding path program 1 times [2024-06-28 03:04:05,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:04:05,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342481776] [2024-06-28 03:04:05,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:04:05,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:04:05,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:04:06,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:04:06,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:04:06,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342481776] [2024-06-28 03:04:06,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342481776] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:04:06,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:04:06,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:04:06,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538162904] [2024-06-28 03:04:06,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:04:06,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:04:06,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:04:06,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:04:06,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:04:07,159 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 03:04:07,160 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 539 places, 611 transitions, 9011 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:07,160 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:04:07,160 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 03:04:07,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:04:08,311 INFO L124 PetriNetUnfolderBase]: 1220/2273 cut-off events. [2024-06-28 03:04:08,311 INFO L125 PetriNetUnfolderBase]: For 666748/666748 co-relation queries the response was YES. [2024-06-28 03:04:08,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22623 conditions, 2273 events. 1220/2273 cut-off events. For 666748/666748 co-relation queries the response was YES. Maximal size of possible extension queue 272. Compared 14792 event pairs, 75 based on Foata normal form. 2/2273 useless extension candidates. Maximal degree in co-relation 22382. Up to 1955 conditions per place. [2024-06-28 03:04:08,345 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 560 selfloop transitions, 70 changer transitions 0/633 dead transitions. [2024-06-28 03:04:08,345 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 550 places, 633 transitions, 10847 flow [2024-06-28 03:04:08,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:04:08,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:04:08,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 151 transitions. [2024-06-28 03:04:08,346 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3932291666666667 [2024-06-28 03:04:08,346 INFO L175 Difference]: Start difference. First operand has 539 places, 611 transitions, 9011 flow. Second operand 12 states and 151 transitions. [2024-06-28 03:04:08,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 550 places, 633 transitions, 10847 flow [2024-06-28 03:04:11,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 540 places, 633 transitions, 10727 flow, removed 8 selfloop flow, removed 10 redundant places. [2024-06-28 03:04:11,522 INFO L231 Difference]: Finished difference. Result has 541 places, 615 transitions, 9213 flow [2024-06-28 03:04:11,522 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=8891, PETRI_DIFFERENCE_MINUEND_PLACES=529, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=611, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=545, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9213, PETRI_PLACES=541, PETRI_TRANSITIONS=615} [2024-06-28 03:04:11,522 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 510 predicate places. [2024-06-28 03:04:11,522 INFO L495 AbstractCegarLoop]: Abstraction has has 541 places, 615 transitions, 9213 flow [2024-06-28 03:04:11,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:11,522 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:04:11,522 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:04:11,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181 [2024-06-28 03:04:11,523 INFO L420 AbstractCegarLoop]: === Iteration 183 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:04:11,523 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:04:11,523 INFO L85 PathProgramCache]: Analyzing trace with hash -658729175, now seen corresponding path program 2 times [2024-06-28 03:04:11,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:04:11,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156222899] [2024-06-28 03:04:11,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:04:11,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:04:11,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:04:12,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:04:12,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:04:12,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156222899] [2024-06-28 03:04:12,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156222899] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:04:12,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:04:12,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:04:12,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924400231] [2024-06-28 03:04:12,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:04:12,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:04:12,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:04:12,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:04:12,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:04:13,098 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 03:04:13,099 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 541 places, 615 transitions, 9213 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:13,099 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:04:13,099 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 03:04:13,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:04:14,003 INFO L124 PetriNetUnfolderBase]: 1216/2267 cut-off events. [2024-06-28 03:04:14,004 INFO L125 PetriNetUnfolderBase]: For 641494/641494 co-relation queries the response was YES. [2024-06-28 03:04:14,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22224 conditions, 2267 events. 1216/2267 cut-off events. For 641494/641494 co-relation queries the response was YES. Maximal size of possible extension queue 272. Compared 14746 event pairs, 76 based on Foata normal form. 2/2267 useless extension candidates. Maximal degree in co-relation 21982. Up to 1975 conditions per place. [2024-06-28 03:04:14,042 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 567 selfloop transitions, 62 changer transitions 0/632 dead transitions. [2024-06-28 03:04:14,042 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 552 places, 632 transitions, 10513 flow [2024-06-28 03:04:14,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:04:14,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:04:14,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 147 transitions. [2024-06-28 03:04:14,043 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3828125 [2024-06-28 03:04:14,043 INFO L175 Difference]: Start difference. First operand has 541 places, 615 transitions, 9213 flow. Second operand 12 states and 147 transitions. [2024-06-28 03:04:14,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 552 places, 632 transitions, 10513 flow [2024-06-28 03:04:17,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 542 places, 632 transitions, 10161 flow, removed 106 selfloop flow, removed 10 redundant places. [2024-06-28 03:04:17,150 INFO L231 Difference]: Finished difference. Result has 543 places, 615 transitions, 8993 flow [2024-06-28 03:04:17,150 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=8861, PETRI_DIFFERENCE_MINUEND_PLACES=531, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=615, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=553, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8993, PETRI_PLACES=543, PETRI_TRANSITIONS=615} [2024-06-28 03:04:17,150 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 512 predicate places. [2024-06-28 03:04:17,150 INFO L495 AbstractCegarLoop]: Abstraction has has 543 places, 615 transitions, 8993 flow [2024-06-28 03:04:17,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:17,150 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:04:17,150 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:04:17,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182 [2024-06-28 03:04:17,151 INFO L420 AbstractCegarLoop]: === Iteration 184 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:04:17,151 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:04:17,151 INFO L85 PathProgramCache]: Analyzing trace with hash 342468701, now seen corresponding path program 7 times [2024-06-28 03:04:17,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:04:17,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594810702] [2024-06-28 03:04:17,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:04:17,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:04:17,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:04:18,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:04:18,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:04:18,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594810702] [2024-06-28 03:04:18,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594810702] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:04:18,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:04:18,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:04:18,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215248856] [2024-06-28 03:04:18,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:04:18,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:04:18,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:04:18,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:04:18,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:04:18,627 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 03:04:18,627 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 543 places, 615 transitions, 8993 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:18,627 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:04:18,627 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 03:04:18,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:04:19,531 INFO L124 PetriNetUnfolderBase]: 1220/2275 cut-off events. [2024-06-28 03:04:19,531 INFO L125 PetriNetUnfolderBase]: For 646394/646394 co-relation queries the response was YES. [2024-06-28 03:04:19,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22169 conditions, 2275 events. 1220/2275 cut-off events. For 646394/646394 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 14784 event pairs, 83 based on Foata normal form. 2/2275 useless extension candidates. Maximal degree in co-relation 21926. Up to 1981 conditions per place. [2024-06-28 03:04:19,569 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 580 selfloop transitions, 50 changer transitions 0/633 dead transitions. [2024-06-28 03:04:19,569 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 553 places, 633 transitions, 10361 flow [2024-06-28 03:04:19,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:04:19,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:04:19,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-28 03:04:19,570 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835227272727273 [2024-06-28 03:04:19,570 INFO L175 Difference]: Start difference. First operand has 543 places, 615 transitions, 8993 flow. Second operand 11 states and 135 transitions. [2024-06-28 03:04:19,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 553 places, 633 transitions, 10361 flow [2024-06-28 03:04:22,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 541 places, 633 transitions, 10136 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-06-28 03:04:22,780 INFO L231 Difference]: Finished difference. Result has 543 places, 617 transitions, 8950 flow [2024-06-28 03:04:22,780 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=8768, PETRI_DIFFERENCE_MINUEND_PLACES=531, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=615, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=565, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8950, PETRI_PLACES=543, PETRI_TRANSITIONS=617} [2024-06-28 03:04:22,780 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 512 predicate places. [2024-06-28 03:04:22,780 INFO L495 AbstractCegarLoop]: Abstraction has has 543 places, 617 transitions, 8950 flow [2024-06-28 03:04:22,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:22,781 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:04:22,781 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:04:22,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183 [2024-06-28 03:04:22,781 INFO L420 AbstractCegarLoop]: === Iteration 185 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:04:22,781 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:04:22,781 INFO L85 PathProgramCache]: Analyzing trace with hash -377352479, now seen corresponding path program 8 times [2024-06-28 03:04:22,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:04:22,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462902200] [2024-06-28 03:04:22,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:04:22,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:04:22,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:04:23,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:04:23,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:04:23,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462902200] [2024-06-28 03:04:23,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462902200] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:04:23,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:04:23,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:04:23,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062037090] [2024-06-28 03:04:23,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:04:23,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:04:23,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:04:23,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:04:23,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:04:24,096 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 03:04:24,096 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 543 places, 617 transitions, 8950 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:24,097 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:04:24,097 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 03:04:24,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:04:24,952 INFO L124 PetriNetUnfolderBase]: 1224/2283 cut-off events. [2024-06-28 03:04:24,953 INFO L125 PetriNetUnfolderBase]: For 654471/654471 co-relation queries the response was YES. [2024-06-28 03:04:24,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22257 conditions, 2283 events. 1224/2283 cut-off events. For 654471/654471 co-relation queries the response was YES. Maximal size of possible extension queue 275. Compared 14879 event pairs, 82 based on Foata normal form. 2/2283 useless extension candidates. Maximal degree in co-relation 22012. Up to 2008 conditions per place. [2024-06-28 03:04:24,994 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 582 selfloop transitions, 49 changer transitions 0/634 dead transitions. [2024-06-28 03:04:24,994 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 553 places, 634 transitions, 10310 flow [2024-06-28 03:04:24,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:04:24,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:04:24,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-28 03:04:24,994 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3806818181818182 [2024-06-28 03:04:24,995 INFO L175 Difference]: Start difference. First operand has 543 places, 617 transitions, 8950 flow. Second operand 11 states and 134 transitions. [2024-06-28 03:04:24,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 553 places, 634 transitions, 10310 flow [2024-06-28 03:04:28,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 545 places, 634 transitions, 10162 flow, removed 28 selfloop flow, removed 8 redundant places. [2024-06-28 03:04:28,516 INFO L231 Difference]: Finished difference. Result has 546 places, 618 transitions, 8966 flow [2024-06-28 03:04:28,516 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=8802, PETRI_DIFFERENCE_MINUEND_PLACES=535, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=617, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=568, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8966, PETRI_PLACES=546, PETRI_TRANSITIONS=618} [2024-06-28 03:04:28,517 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 515 predicate places. [2024-06-28 03:04:28,517 INFO L495 AbstractCegarLoop]: Abstraction has has 546 places, 618 transitions, 8966 flow [2024-06-28 03:04:28,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:28,517 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:04:28,517 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:04:28,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184 [2024-06-28 03:04:28,517 INFO L420 AbstractCegarLoop]: === Iteration 186 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:04:28,517 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:04:28,517 INFO L85 PathProgramCache]: Analyzing trace with hash -371842229, now seen corresponding path program 9 times [2024-06-28 03:04:28,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:04:28,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801068014] [2024-06-28 03:04:28,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:04:28,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:04:28,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:04:29,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:04:29,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:04:29,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801068014] [2024-06-28 03:04:29,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801068014] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:04:29,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:04:29,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:04:29,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744685315] [2024-06-28 03:04:29,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:04:29,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:04:29,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:04:29,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:04:29,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:04:29,750 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 03:04:29,750 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 546 places, 618 transitions, 8966 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:29,750 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:04:29,750 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 03:04:29,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:04:30,579 INFO L124 PetriNetUnfolderBase]: 1228/2291 cut-off events. [2024-06-28 03:04:30,579 INFO L125 PetriNetUnfolderBase]: For 661858/661858 co-relation queries the response was YES. [2024-06-28 03:04:30,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22335 conditions, 2291 events. 1228/2291 cut-off events. For 661858/661858 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 14973 event pairs, 80 based on Foata normal form. 2/2291 useless extension candidates. Maximal degree in co-relation 22089. Up to 2006 conditions per place. [2024-06-28 03:04:30,620 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 576 selfloop transitions, 55 changer transitions 0/634 dead transitions. [2024-06-28 03:04:30,620 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 556 places, 634 transitions, 10326 flow [2024-06-28 03:04:30,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:04:30,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:04:30,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-28 03:04:30,637 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38636363636363635 [2024-06-28 03:04:30,637 INFO L175 Difference]: Start difference. First operand has 546 places, 618 transitions, 8966 flow. Second operand 11 states and 136 transitions. [2024-06-28 03:04:30,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 556 places, 634 transitions, 10326 flow [2024-06-28 03:04:33,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 547 places, 634 transitions, 10172 flow, removed 29 selfloop flow, removed 9 redundant places. [2024-06-28 03:04:33,917 INFO L231 Difference]: Finished difference. Result has 548 places, 619 transitions, 8991 flow [2024-06-28 03:04:33,918 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=8812, PETRI_DIFFERENCE_MINUEND_PLACES=537, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=618, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=563, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8991, PETRI_PLACES=548, PETRI_TRANSITIONS=619} [2024-06-28 03:04:33,918 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 517 predicate places. [2024-06-28 03:04:33,918 INFO L495 AbstractCegarLoop]: Abstraction has has 548 places, 619 transitions, 8991 flow [2024-06-28 03:04:33,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:33,918 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:04:33,918 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:04:33,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185 [2024-06-28 03:04:33,919 INFO L420 AbstractCegarLoop]: === Iteration 187 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:04:33,919 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:04:33,919 INFO L85 PathProgramCache]: Analyzing trace with hash -177902819, now seen corresponding path program 10 times [2024-06-28 03:04:33,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:04:33,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379112556] [2024-06-28 03:04:33,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:04:33,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:04:33,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:04:35,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:04:35,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:04:35,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379112556] [2024-06-28 03:04:35,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379112556] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:04:35,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:04:35,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:04:35,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629018155] [2024-06-28 03:04:35,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:04:35,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:04:35,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:04:35,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:04:35,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:04:35,363 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 03:04:35,364 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 548 places, 619 transitions, 8991 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:35,364 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:04:35,364 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 03:04:35,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:04:36,263 INFO L124 PetriNetUnfolderBase]: 1232/2299 cut-off events. [2024-06-28 03:04:36,263 INFO L125 PetriNetUnfolderBase]: For 669398/669398 co-relation queries the response was YES. [2024-06-28 03:04:36,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22426 conditions, 2299 events. 1232/2299 cut-off events. For 669398/669398 co-relation queries the response was YES. Maximal size of possible extension queue 277. Compared 15091 event pairs, 71 based on Foata normal form. 2/2299 useless extension candidates. Maximal degree in co-relation 22179. Up to 1965 conditions per place. [2024-06-28 03:04:36,303 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 563 selfloop transitions, 69 changer transitions 0/635 dead transitions. [2024-06-28 03:04:36,303 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 558 places, 635 transitions, 10355 flow [2024-06-28 03:04:36,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:04:36,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:04:36,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-28 03:04:36,304 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38636363636363635 [2024-06-28 03:04:36,304 INFO L175 Difference]: Start difference. First operand has 548 places, 619 transitions, 8991 flow. Second operand 11 states and 136 transitions. [2024-06-28 03:04:36,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 558 places, 635 transitions, 10355 flow [2024-06-28 03:04:39,694 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 549 places, 635 transitions, 10188 flow, removed 30 selfloop flow, removed 9 redundant places. [2024-06-28 03:04:39,701 INFO L231 Difference]: Finished difference. Result has 550 places, 620 transitions, 9033 flow [2024-06-28 03:04:39,701 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=8824, PETRI_DIFFERENCE_MINUEND_PLACES=539, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=619, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=550, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9033, PETRI_PLACES=550, PETRI_TRANSITIONS=620} [2024-06-28 03:04:39,701 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 519 predicate places. [2024-06-28 03:04:39,701 INFO L495 AbstractCegarLoop]: Abstraction has has 550 places, 620 transitions, 9033 flow [2024-06-28 03:04:39,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:39,701 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:04:39,701 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:04:39,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186 [2024-06-28 03:04:39,702 INFO L420 AbstractCegarLoop]: === Iteration 188 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:04:39,702 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:04:39,702 INFO L85 PathProgramCache]: Analyzing trace with hash -177695057, now seen corresponding path program 3 times [2024-06-28 03:04:39,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:04:39,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424935920] [2024-06-28 03:04:39,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:04:39,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:04:39,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:04:41,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:04:41,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:04:41,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424935920] [2024-06-28 03:04:41,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424935920] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:04:41,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:04:41,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:04:41,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226066394] [2024-06-28 03:04:41,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:04:41,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:04:41,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:04:41,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:04:41,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:04:41,666 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 03:04:41,666 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 550 places, 620 transitions, 9033 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:41,666 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:04:41,666 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 03:04:41,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:04:42,674 INFO L124 PetriNetUnfolderBase]: 1248/2329 cut-off events. [2024-06-28 03:04:42,674 INFO L125 PetriNetUnfolderBase]: For 658611/658611 co-relation queries the response was YES. [2024-06-28 03:04:42,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22609 conditions, 2329 events. 1248/2329 cut-off events. For 658611/658611 co-relation queries the response was YES. Maximal size of possible extension queue 280. Compared 15325 event pairs, 59 based on Foata normal form. 1/2324 useless extension candidates. Maximal degree in co-relation 22361. Up to 1998 conditions per place. [2024-06-28 03:04:42,716 INFO L140 encePairwiseOnDemand]: 18/32 looper letters, 591 selfloop transitions, 69 changer transitions 0/663 dead transitions. [2024-06-28 03:04:42,717 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 562 places, 663 transitions, 10763 flow [2024-06-28 03:04:42,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 03:04:42,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 03:04:42,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 163 transitions. [2024-06-28 03:04:42,717 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3918269230769231 [2024-06-28 03:04:42,717 INFO L175 Difference]: Start difference. First operand has 550 places, 620 transitions, 9033 flow. Second operand 13 states and 163 transitions. [2024-06-28 03:04:42,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 562 places, 663 transitions, 10763 flow [2024-06-28 03:04:46,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 553 places, 663 transitions, 10548 flow, removed 31 selfloop flow, removed 9 redundant places. [2024-06-28 03:04:46,258 INFO L231 Difference]: Finished difference. Result has 559 places, 635 transitions, 9281 flow [2024-06-28 03:04:46,258 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=8836, PETRI_DIFFERENCE_MINUEND_PLACES=541, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=620, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=555, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=9281, PETRI_PLACES=559, PETRI_TRANSITIONS=635} [2024-06-28 03:04:46,259 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 528 predicate places. [2024-06-28 03:04:46,259 INFO L495 AbstractCegarLoop]: Abstraction has has 559 places, 635 transitions, 9281 flow [2024-06-28 03:04:46,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:46,259 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:04:46,259 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:04:46,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187 [2024-06-28 03:04:46,259 INFO L420 AbstractCegarLoop]: === Iteration 189 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:04:46,260 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:04:46,260 INFO L85 PathProgramCache]: Analyzing trace with hash 375063812, now seen corresponding path program 2 times [2024-06-28 03:04:46,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:04:46,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840355549] [2024-06-28 03:04:46,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:04:46,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:04:46,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:04:47,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:04:47,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:04:47,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840355549] [2024-06-28 03:04:47,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840355549] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:04:47,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:04:47,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:04:47,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892626731] [2024-06-28 03:04:47,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:04:47,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:04:47,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:04:47,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:04:47,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:04:47,652 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 03:04:47,653 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 559 places, 635 transitions, 9281 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:47,653 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:04:47,653 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 03:04:47,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:04:48,690 INFO L124 PetriNetUnfolderBase]: 1252/2325 cut-off events. [2024-06-28 03:04:48,690 INFO L125 PetriNetUnfolderBase]: For 681881/681881 co-relation queries the response was YES. [2024-06-28 03:04:48,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22700 conditions, 2325 events. 1252/2325 cut-off events. For 681881/681881 co-relation queries the response was YES. Maximal size of possible extension queue 281. Compared 15243 event pairs, 62 based on Foata normal form. 2/2315 useless extension candidates. Maximal degree in co-relation 22446. Up to 1920 conditions per place. [2024-06-28 03:04:48,730 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 560 selfloop transitions, 90 changer transitions 0/653 dead transitions. [2024-06-28 03:04:48,730 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 570 places, 653 transitions, 10659 flow [2024-06-28 03:04:48,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:04:48,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:04:48,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 150 transitions. [2024-06-28 03:04:48,731 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-28 03:04:48,731 INFO L175 Difference]: Start difference. First operand has 559 places, 635 transitions, 9281 flow. Second operand 12 states and 150 transitions. [2024-06-28 03:04:48,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 570 places, 653 transitions, 10659 flow [2024-06-28 03:04:52,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 567 places, 653 transitions, 10516 flow, removed 46 selfloop flow, removed 3 redundant places. [2024-06-28 03:04:52,544 INFO L231 Difference]: Finished difference. Result has 569 places, 637 transitions, 9373 flow [2024-06-28 03:04:52,544 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=9138, PETRI_DIFFERENCE_MINUEND_PLACES=556, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=635, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=545, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9373, PETRI_PLACES=569, PETRI_TRANSITIONS=637} [2024-06-28 03:04:52,544 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 538 predicate places. [2024-06-28 03:04:52,544 INFO L495 AbstractCegarLoop]: Abstraction has has 569 places, 637 transitions, 9373 flow [2024-06-28 03:04:52,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:52,544 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:04:52,544 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:04:52,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188 [2024-06-28 03:04:52,544 INFO L420 AbstractCegarLoop]: === Iteration 190 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:04:52,545 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:04:52,545 INFO L85 PathProgramCache]: Analyzing trace with hash -450606578, now seen corresponding path program 3 times [2024-06-28 03:04:52,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:04:52,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70554187] [2024-06-28 03:04:52,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:04:52,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:04:52,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:04:54,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:04:54,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:04:54,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70554187] [2024-06-28 03:04:54,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70554187] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:04:54,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:04:54,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:04:54,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169875751] [2024-06-28 03:04:54,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:04:54,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:04:54,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:04:54,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:04:54,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:04:54,272 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 03:04:54,272 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 569 places, 637 transitions, 9373 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:54,272 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:04:54,272 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 03:04:54,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:04:55,244 INFO L124 PetriNetUnfolderBase]: 1268/2369 cut-off events. [2024-06-28 03:04:55,244 INFO L125 PetriNetUnfolderBase]: For 823647/823647 co-relation queries the response was YES. [2024-06-28 03:04:55,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23073 conditions, 2369 events. 1268/2369 cut-off events. For 823647/823647 co-relation queries the response was YES. Maximal size of possible extension queue 282. Compared 15595 event pairs, 83 based on Foata normal form. 10/2375 useless extension candidates. Maximal degree in co-relation 22816. Up to 2005 conditions per place. [2024-06-28 03:04:55,287 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 585 selfloop transitions, 64 changer transitions 5/657 dead transitions. [2024-06-28 03:04:55,287 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 580 places, 657 transitions, 10833 flow [2024-06-28 03:04:55,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:04:55,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:04:55,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 152 transitions. [2024-06-28 03:04:55,288 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3958333333333333 [2024-06-28 03:04:55,288 INFO L175 Difference]: Start difference. First operand has 569 places, 637 transitions, 9373 flow. Second operand 12 states and 152 transitions. [2024-06-28 03:04:55,288 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 580 places, 657 transitions, 10833 flow [2024-06-28 03:04:59,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 571 places, 657 transitions, 10628 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-06-28 03:04:59,129 INFO L231 Difference]: Finished difference. Result has 572 places, 636 transitions, 9300 flow [2024-06-28 03:04:59,130 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=9168, PETRI_DIFFERENCE_MINUEND_PLACES=560, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=637, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=573, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9300, PETRI_PLACES=572, PETRI_TRANSITIONS=636} [2024-06-28 03:04:59,130 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 541 predicate places. [2024-06-28 03:04:59,130 INFO L495 AbstractCegarLoop]: Abstraction has has 572 places, 636 transitions, 9300 flow [2024-06-28 03:04:59,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:59,130 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:04:59,131 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:04:59,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable189 [2024-06-28 03:04:59,131 INFO L420 AbstractCegarLoop]: === Iteration 191 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:04:59,131 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:04:59,131 INFO L85 PathProgramCache]: Analyzing trace with hash -371627027, now seen corresponding path program 4 times [2024-06-28 03:04:59,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:04:59,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517887124] [2024-06-28 03:04:59,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:04:59,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:04:59,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:05:00,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:05:00,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:05:00,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517887124] [2024-06-28 03:05:00,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517887124] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:05:00,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:05:00,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:05:00,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786493950] [2024-06-28 03:05:00,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:05:00,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:05:00,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:05:00,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:05:00,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:05:00,471 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 03:05:00,471 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 572 places, 636 transitions, 9300 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:05:00,471 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:05:00,471 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 03:05:00,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:05:01,414 INFO L124 PetriNetUnfolderBase]: 1266/2371 cut-off events. [2024-06-28 03:05:01,414 INFO L125 PetriNetUnfolderBase]: For 698370/698370 co-relation queries the response was YES. [2024-06-28 03:05:01,446 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23086 conditions, 2371 events. 1266/2371 cut-off events. For 698370/698370 co-relation queries the response was YES. Maximal size of possible extension queue 283. Compared 15672 event pairs, 81 based on Foata normal form. 2/2371 useless extension candidates. Maximal degree in co-relation 22828. Up to 2011 conditions per place. [2024-06-28 03:05:01,454 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 575 selfloop transitions, 77 changer transitions 0/655 dead transitions. [2024-06-28 03:05:01,454 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 582 places, 655 transitions, 11190 flow [2024-06-28 03:05:01,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:05:01,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:05:01,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 141 transitions. [2024-06-28 03:05:01,455 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4005681818181818 [2024-06-28 03:05:01,455 INFO L175 Difference]: Start difference. First operand has 572 places, 636 transitions, 9300 flow. Second operand 11 states and 141 transitions. [2024-06-28 03:05:01,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 582 places, 655 transitions, 11190 flow [2024-06-28 03:05:05,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 572 places, 655 transitions, 11042 flow, removed 10 selfloop flow, removed 10 redundant places. [2024-06-28 03:05:05,341 INFO L231 Difference]: Finished difference. Result has 573 places, 640 transitions, 9492 flow [2024-06-28 03:05:05,341 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=9152, PETRI_DIFFERENCE_MINUEND_PLACES=562, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=636, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=563, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9492, PETRI_PLACES=573, PETRI_TRANSITIONS=640} [2024-06-28 03:05:05,342 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 542 predicate places. [2024-06-28 03:05:05,342 INFO L495 AbstractCegarLoop]: Abstraction has has 573 places, 640 transitions, 9492 flow [2024-06-28 03:05:05,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:05:05,342 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:05:05,342 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:05:05,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190 [2024-06-28 03:05:05,343 INFO L420 AbstractCegarLoop]: === Iteration 192 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:05:05,343 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:05:05,343 INFO L85 PathProgramCache]: Analyzing trace with hash 2702475, now seen corresponding path program 5 times [2024-06-28 03:05:05,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:05:05,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221810772] [2024-06-28 03:05:05,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:05:05,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:05:05,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:05:06,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:05:06,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:05:06,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221810772] [2024-06-28 03:05:06,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221810772] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:05:06,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:05:06,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:05:06,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012950005] [2024-06-28 03:05:06,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:05:06,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:05:06,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:05:06,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:05:06,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:05:06,982 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 03:05:06,982 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 573 places, 640 transitions, 9492 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:05:06,982 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:05:06,982 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 03:05:06,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:05:07,913 INFO L124 PetriNetUnfolderBase]: 1262/2365 cut-off events. [2024-06-28 03:05:07,913 INFO L125 PetriNetUnfolderBase]: For 670119/670119 co-relation queries the response was YES. [2024-06-28 03:05:07,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22667 conditions, 2365 events. 1262/2365 cut-off events. For 670119/670119 co-relation queries the response was YES. Maximal size of possible extension queue 283. Compared 15630 event pairs, 63 based on Foata normal form. 2/2365 useless extension candidates. Maximal degree in co-relation 22408. Up to 1941 conditions per place. [2024-06-28 03:05:07,955 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 535 selfloop transitions, 117 changer transitions 0/655 dead transitions. [2024-06-28 03:05:07,955 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 584 places, 655 transitions, 10832 flow [2024-06-28 03:05:07,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:05:07,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:05:07,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 148 transitions. [2024-06-28 03:05:07,956 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3854166666666667 [2024-06-28 03:05:07,956 INFO L175 Difference]: Start difference. First operand has 573 places, 640 transitions, 9492 flow. Second operand 12 states and 148 transitions. [2024-06-28 03:05:07,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 584 places, 655 transitions, 10832 flow [2024-06-28 03:05:11,418 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 573 places, 655 transitions, 10321 flow, removed 117 selfloop flow, removed 11 redundant places. [2024-06-28 03:05:11,426 INFO L231 Difference]: Finished difference. Result has 574 places, 640 transitions, 9223 flow [2024-06-28 03:05:11,426 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=8981, PETRI_DIFFERENCE_MINUEND_PLACES=562, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=640, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=523, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9223, PETRI_PLACES=574, PETRI_TRANSITIONS=640} [2024-06-28 03:05:11,426 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 543 predicate places. [2024-06-28 03:05:11,426 INFO L495 AbstractCegarLoop]: Abstraction has has 574 places, 640 transitions, 9223 flow [2024-06-28 03:05:11,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:05:11,426 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:05:11,426 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:05:11,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191 [2024-06-28 03:05:11,427 INFO L420 AbstractCegarLoop]: === Iteration 193 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:05:11,427 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:05:11,427 INFO L85 PathProgramCache]: Analyzing trace with hash -170537498, now seen corresponding path program 4 times [2024-06-28 03:05:11,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:05:11,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458253779] [2024-06-28 03:05:11,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:05:11,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:05:11,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:05:12,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:05:12,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:05:12,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458253779] [2024-06-28 03:05:12,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458253779] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:05:12,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:05:12,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:05:12,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070205160] [2024-06-28 03:05:12,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:05:12,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:05:12,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:05:12,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:05:12,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:05:12,951 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 03:05:12,951 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 574 places, 640 transitions, 9223 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:05:12,951 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:05:12,951 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 03:05:12,951 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:05:13,871 INFO L124 PetriNetUnfolderBase]: 1272/2375 cut-off events. [2024-06-28 03:05:13,871 INFO L125 PetriNetUnfolderBase]: For 665926/665926 co-relation queries the response was YES. [2024-06-28 03:05:13,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22619 conditions, 2375 events. 1272/2375 cut-off events. For 665926/665926 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 15695 event pairs, 72 based on Foata normal form. 2/2367 useless extension candidates. Maximal degree in co-relation 22360. Up to 2011 conditions per place. [2024-06-28 03:05:13,908 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 571 selfloop transitions, 86 changer transitions 0/660 dead transitions. [2024-06-28 03:05:13,908 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 585 places, 660 transitions, 10653 flow [2024-06-28 03:05:13,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:05:13,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:05:13,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 148 transitions. [2024-06-28 03:05:13,909 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3854166666666667 [2024-06-28 03:05:13,909 INFO L175 Difference]: Start difference. First operand has 574 places, 640 transitions, 9223 flow. Second operand 12 states and 148 transitions. [2024-06-28 03:05:13,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 585 places, 660 transitions, 10653 flow [2024-06-28 03:05:17,865 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 575 places, 660 transitions, 10440 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-28 03:05:17,872 INFO L231 Difference]: Finished difference. Result has 577 places, 644 transitions, 9278 flow [2024-06-28 03:05:17,872 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=9013, PETRI_DIFFERENCE_MINUEND_PLACES=564, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=640, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=554, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9278, PETRI_PLACES=577, PETRI_TRANSITIONS=644} [2024-06-28 03:05:17,873 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 546 predicate places. [2024-06-28 03:05:17,873 INFO L495 AbstractCegarLoop]: Abstraction has has 577 places, 644 transitions, 9278 flow [2024-06-28 03:05:17,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:05:17,873 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:05:17,873 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:05:17,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192 [2024-06-28 03:05:17,873 INFO L420 AbstractCegarLoop]: === Iteration 194 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:05:17,874 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:05:17,874 INFO L85 PathProgramCache]: Analyzing trace with hash -371634467, now seen corresponding path program 6 times [2024-06-28 03:05:17,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:05:17,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514863384] [2024-06-28 03:05:17,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:05:17,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:05:17,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:05:19,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:05:19,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:05:19,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514863384] [2024-06-28 03:05:19,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514863384] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:05:19,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:05:19,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:05:19,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155053766] [2024-06-28 03:05:19,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:05:19,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:05:19,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:05:19,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:05:19,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:05:19,563 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 03:05:19,563 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 577 places, 644 transitions, 9278 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:05:19,563 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:05:19,563 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 03:05:19,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:05:20,560 INFO L124 PetriNetUnfolderBase]: 1278/2393 cut-off events. [2024-06-28 03:05:20,560 INFO L125 PetriNetUnfolderBase]: For 674061/674061 co-relation queries the response was YES. [2024-06-28 03:05:20,596 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22814 conditions, 2393 events. 1278/2393 cut-off events. For 674061/674061 co-relation queries the response was YES. Maximal size of possible extension queue 287. Compared 15852 event pairs, 87 based on Foata normal form. 2/2393 useless extension candidates. Maximal degree in co-relation 22554. Up to 2083 conditions per place. [2024-06-28 03:05:20,604 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 590 selfloop transitions, 70 changer transitions 0/663 dead transitions. [2024-06-28 03:05:20,604 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 588 places, 663 transitions, 10796 flow [2024-06-28 03:05:20,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:05:20,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:05:20,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 147 transitions. [2024-06-28 03:05:20,605 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3828125 [2024-06-28 03:05:20,605 INFO L175 Difference]: Start difference. First operand has 577 places, 644 transitions, 9278 flow. Second operand 12 states and 147 transitions. [2024-06-28 03:05:20,605 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 588 places, 663 transitions, 10796 flow [2024-06-28 03:05:24,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 579 places, 663 transitions, 10596 flow, removed 18 selfloop flow, removed 9 redundant places. [2024-06-28 03:05:24,670 INFO L231 Difference]: Finished difference. Result has 580 places, 648 transitions, 9396 flow [2024-06-28 03:05:24,670 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=9078, PETRI_DIFFERENCE_MINUEND_PLACES=568, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=644, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=574, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9396, PETRI_PLACES=580, PETRI_TRANSITIONS=648} [2024-06-28 03:05:24,670 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 549 predicate places. [2024-06-28 03:05:24,670 INFO L495 AbstractCegarLoop]: Abstraction has has 580 places, 648 transitions, 9396 flow [2024-06-28 03:05:24,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:05:24,670 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:05:24,670 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:05:24,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable193 [2024-06-28 03:05:24,670 INFO L420 AbstractCegarLoop]: === Iteration 195 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:05:24,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:05:24,671 INFO L85 PathProgramCache]: Analyzing trace with hash -371836277, now seen corresponding path program 7 times [2024-06-28 03:05:24,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:05:24,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584072258] [2024-06-28 03:05:24,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:05:24,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:05:24,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:05:26,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:05:26,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:05:26,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584072258] [2024-06-28 03:05:26,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584072258] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:05:26,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:05:26,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:05:26,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389145656] [2024-06-28 03:05:26,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:05:26,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:05:26,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:05:26,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:05:26,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:05:26,388 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 03:05:26,389 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 580 places, 648 transitions, 9396 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:05:26,389 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:05:26,389 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 03:05:26,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:05:27,351 INFO L124 PetriNetUnfolderBase]: 1274/2387 cut-off events. [2024-06-28 03:05:27,352 INFO L125 PetriNetUnfolderBase]: For 644119/644119 co-relation queries the response was YES. [2024-06-28 03:05:27,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22279 conditions, 2387 events. 1274/2387 cut-off events. For 644119/644119 co-relation queries the response was YES. Maximal size of possible extension queue 287. Compared 15853 event pairs, 87 based on Foata normal form. 2/2387 useless extension candidates. Maximal degree in co-relation 22018. Up to 2077 conditions per place. [2024-06-28 03:05:27,395 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 591 selfloop transitions, 69 changer transitions 0/663 dead transitions. [2024-06-28 03:05:27,395 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 591 places, 663 transitions, 10752 flow [2024-06-28 03:05:27,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:05:27,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:05:27,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 148 transitions. [2024-06-28 03:05:27,396 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3854166666666667 [2024-06-28 03:05:27,396 INFO L175 Difference]: Start difference. First operand has 580 places, 648 transitions, 9396 flow. Second operand 12 states and 148 transitions. [2024-06-28 03:05:27,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 591 places, 663 transitions, 10752 flow [2024-06-28 03:05:31,170 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 581 places, 663 transitions, 10402 flow, removed 108 selfloop flow, removed 10 redundant places. [2024-06-28 03:05:31,177 INFO L231 Difference]: Finished difference. Result has 582 places, 648 transitions, 9192 flow [2024-06-28 03:05:31,178 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=9046, PETRI_DIFFERENCE_MINUEND_PLACES=570, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=648, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=579, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9192, PETRI_PLACES=582, PETRI_TRANSITIONS=648} [2024-06-28 03:05:31,178 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 551 predicate places. [2024-06-28 03:05:31,178 INFO L495 AbstractCegarLoop]: Abstraction has has 582 places, 648 transitions, 9192 flow [2024-06-28 03:05:31,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:05:31,178 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:05:31,178 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:05:31,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable194 [2024-06-28 03:05:31,178 INFO L420 AbstractCegarLoop]: === Iteration 196 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:05:31,178 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:05:31,178 INFO L85 PathProgramCache]: Analyzing trace with hash -170268728, now seen corresponding path program 5 times [2024-06-28 03:05:31,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:05:31,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494432460] [2024-06-28 03:05:31,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:05:31,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:05:31,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:05:32,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:05:32,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:05:32,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494432460] [2024-06-28 03:05:32,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494432460] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:05:32,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:05:32,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:05:32,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090961565] [2024-06-28 03:05:32,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:05:32,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:05:32,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:05:32,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:05:32,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:05:32,494 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 03:05:32,494 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 582 places, 648 transitions, 9192 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:05:32,494 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:05:32,494 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 03:05:32,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:05:33,415 INFO L124 PetriNetUnfolderBase]: 1307/2443 cut-off events. [2024-06-28 03:05:33,415 INFO L125 PetriNetUnfolderBase]: For 827874/827874 co-relation queries the response was YES. [2024-06-28 03:05:33,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24513 conditions, 2443 events. 1307/2443 cut-off events. For 827874/827874 co-relation queries the response was YES. Maximal size of possible extension queue 290. Compared 16152 event pairs, 84 based on Foata normal form. 2/2432 useless extension candidates. Maximal degree in co-relation 24251. Up to 1880 conditions per place. [2024-06-28 03:05:33,461 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 574 selfloop transitions, 93 changer transitions 1/671 dead transitions. [2024-06-28 03:05:33,461 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 592 places, 671 transitions, 11152 flow [2024-06-28 03:05:33,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:05:33,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:05:33,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 145 transitions. [2024-06-28 03:05:33,462 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4119318181818182 [2024-06-28 03:05:33,462 INFO L175 Difference]: Start difference. First operand has 582 places, 648 transitions, 9192 flow. Second operand 11 states and 145 transitions. [2024-06-28 03:05:33,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 592 places, 671 transitions, 11152 flow [2024-06-28 03:05:38,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 581 places, 671 transitions, 10975 flow, removed 12 selfloop flow, removed 11 redundant places. [2024-06-28 03:05:38,466 INFO L231 Difference]: Finished difference. Result has 582 places, 650 transitions, 9283 flow [2024-06-28 03:05:38,466 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=9015, PETRI_DIFFERENCE_MINUEND_PLACES=571, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=648, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=556, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9283, PETRI_PLACES=582, PETRI_TRANSITIONS=650} [2024-06-28 03:05:38,466 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 551 predicate places. [2024-06-28 03:05:38,467 INFO L495 AbstractCegarLoop]: Abstraction has has 582 places, 650 transitions, 9283 flow [2024-06-28 03:05:38,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:05:38,467 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:05:38,467 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:05:38,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195 [2024-06-28 03:05:38,467 INFO L420 AbstractCegarLoop]: === Iteration 197 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:05:38,467 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:05:38,467 INFO L85 PathProgramCache]: Analyzing trace with hash 382473122, now seen corresponding path program 6 times [2024-06-28 03:05:38,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:05:38,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815362286] [2024-06-28 03:05:38,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:05:38,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:05:38,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:05:39,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:05:39,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:05:39,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815362286] [2024-06-28 03:05:39,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815362286] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:05:39,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:05:39,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:05:39,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446664053] [2024-06-28 03:05:39,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:05:39,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:05:39,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:05:39,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:05:39,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:05:39,731 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 03:05:39,731 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 582 places, 650 transitions, 9283 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:05:39,731 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:05:39,731 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 03:05:39,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:05:40,815 INFO L124 PetriNetUnfolderBase]: 1304/2438 cut-off events. [2024-06-28 03:05:40,815 INFO L125 PetriNetUnfolderBase]: For 799083/799083 co-relation queries the response was YES. [2024-06-28 03:05:40,848 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24188 conditions, 2438 events. 1304/2438 cut-off events. For 799083/799083 co-relation queries the response was YES. Maximal size of possible extension queue 290. Compared 16115 event pairs, 85 based on Foata normal form. 2/2427 useless extension candidates. Maximal degree in co-relation 23925. Up to 2022 conditions per place. [2024-06-28 03:05:40,855 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 568 selfloop transitions, 94 changer transitions 0/665 dead transitions. [2024-06-28 03:05:40,855 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 592 places, 665 transitions, 10643 flow [2024-06-28 03:05:40,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:05:40,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:05:40,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 140 transitions. [2024-06-28 03:05:40,856 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3977272727272727 [2024-06-28 03:05:40,856 INFO L175 Difference]: Start difference. First operand has 582 places, 650 transitions, 9283 flow. Second operand 11 states and 140 transitions. [2024-06-28 03:05:40,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 592 places, 665 transitions, 10643 flow [2024-06-28 03:05:45,858 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 585 places, 665 transitions, 10484 flow, removed 18 selfloop flow, removed 7 redundant places. [2024-06-28 03:05:45,865 INFO L231 Difference]: Finished difference. Result has 586 places, 650 transitions, 9320 flow [2024-06-28 03:05:45,865 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=9124, PETRI_DIFFERENCE_MINUEND_PLACES=575, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=650, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=556, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9320, PETRI_PLACES=586, PETRI_TRANSITIONS=650} [2024-06-28 03:05:45,866 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 555 predicate places. [2024-06-28 03:05:45,866 INFO L495 AbstractCegarLoop]: Abstraction has has 586 places, 650 transitions, 9320 flow [2024-06-28 03:05:45,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:05:45,866 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:05:45,866 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:05:45,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196 [2024-06-28 03:05:45,866 INFO L420 AbstractCegarLoop]: === Iteration 198 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:05:45,866 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:05:45,866 INFO L85 PathProgramCache]: Analyzing trace with hash -177896867, now seen corresponding path program 8 times [2024-06-28 03:05:45,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:05:45,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902027299] [2024-06-28 03:05:45,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:05:45,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:05:45,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:05:47,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:05:47,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:05:47,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902027299] [2024-06-28 03:05:47,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902027299] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:05:47,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:05:47,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:05:47,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995208685] [2024-06-28 03:05:47,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:05:47,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:05:47,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:05:47,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:05:47,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:05:47,403 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 03:05:47,403 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 586 places, 650 transitions, 9320 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:05:47,403 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:05:47,403 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 03:05:47,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:05:48,455 INFO L124 PetriNetUnfolderBase]: 1305/2451 cut-off events. [2024-06-28 03:05:48,455 INFO L125 PetriNetUnfolderBase]: For 788336/788336 co-relation queries the response was YES. [2024-06-28 03:05:48,493 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24176 conditions, 2451 events. 1305/2451 cut-off events. For 788336/788336 co-relation queries the response was YES. Maximal size of possible extension queue 291. Compared 16262 event pairs, 76 based on Foata normal form. 2/2451 useless extension candidates. Maximal degree in co-relation 23911. Up to 1909 conditions per place. [2024-06-28 03:05:48,502 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 518 selfloop transitions, 146 changer transitions 0/667 dead transitions. [2024-06-28 03:05:48,502 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 596 places, 667 transitions, 11154 flow [2024-06-28 03:05:48,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:05:48,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:05:48,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 144 transitions. [2024-06-28 03:05:48,503 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-06-28 03:05:48,503 INFO L175 Difference]: Start difference. First operand has 586 places, 650 transitions, 9320 flow. Second operand 11 states and 144 transitions. [2024-06-28 03:05:48,503 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 596 places, 667 transitions, 11154 flow [2024-06-28 03:05:53,317 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 586 places, 667 transitions, 10915 flow, removed 17 selfloop flow, removed 10 redundant places. [2024-06-28 03:05:53,325 INFO L231 Difference]: Finished difference. Result has 587 places, 652 transitions, 9465 flow [2024-06-28 03:05:53,325 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=9081, PETRI_DIFFERENCE_MINUEND_PLACES=576, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=650, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=144, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=506, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9465, PETRI_PLACES=587, PETRI_TRANSITIONS=652} [2024-06-28 03:05:53,325 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 556 predicate places. [2024-06-28 03:05:53,325 INFO L495 AbstractCegarLoop]: Abstraction has has 587 places, 652 transitions, 9465 flow [2024-06-28 03:05:53,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:05:53,325 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:05:53,325 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:05:53,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197 [2024-06-28 03:05:53,325 INFO L420 AbstractCegarLoop]: === Iteration 199 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:05:53,326 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:05:53,326 INFO L85 PathProgramCache]: Analyzing trace with hash -31414197, now seen corresponding path program 11 times [2024-06-28 03:05:53,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:05:53,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224735591] [2024-06-28 03:05:53,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:05:53,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:05:53,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:05:54,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:05:54,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:05:54,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224735591] [2024-06-28 03:05:54,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224735591] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:05:54,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:05:54,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:05:54,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554561554] [2024-06-28 03:05:54,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:05:54,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:05:54,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:05:54,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:05:54,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:05:54,398 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 03:05:54,398 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 587 places, 652 transitions, 9465 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:05:54,398 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:05:54,398 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 03:05:54,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:05:55,332 INFO L124 PetriNetUnfolderBase]: 1309/2460 cut-off events. [2024-06-28 03:05:55,332 INFO L125 PetriNetUnfolderBase]: For 798615/798615 co-relation queries the response was YES. [2024-06-28 03:05:55,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24353 conditions, 2460 events. 1309/2460 cut-off events. For 798615/798615 co-relation queries the response was YES. Maximal size of possible extension queue 292. Compared 16327 event pairs, 77 based on Foata normal form. 2/2460 useless extension candidates. Maximal degree in co-relation 24087. Up to 2038 conditions per place. [2024-06-28 03:05:55,371 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 565 selfloop transitions, 98 changer transitions 0/666 dead transitions. [2024-06-28 03:05:55,371 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 597 places, 666 transitions, 10887 flow [2024-06-28 03:05:55,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:05:55,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:05:55,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-28 03:05:55,381 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38636363636363635 [2024-06-28 03:05:55,381 INFO L175 Difference]: Start difference. First operand has 587 places, 652 transitions, 9465 flow. Second operand 11 states and 136 transitions. [2024-06-28 03:05:55,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 597 places, 666 transitions, 10887 flow [2024-06-28 03:06:00,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 589 places, 666 transitions, 10514 flow, removed 60 selfloop flow, removed 8 redundant places. [2024-06-28 03:06:00,580 INFO L231 Difference]: Finished difference. Result has 590 places, 653 transitions, 9361 flow [2024-06-28 03:06:00,580 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=9092, PETRI_DIFFERENCE_MINUEND_PLACES=579, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=652, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=554, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9361, PETRI_PLACES=590, PETRI_TRANSITIONS=653} [2024-06-28 03:06:00,581 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 559 predicate places. [2024-06-28 03:06:00,581 INFO L495 AbstractCegarLoop]: Abstraction has has 590 places, 653 transitions, 9361 flow [2024-06-28 03:06:00,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:06:00,581 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:06:00,581 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:06:00,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable198 [2024-06-28 03:06:00,581 INFO L420 AbstractCegarLoop]: === Iteration 200 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:06:00,581 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:06:00,581 INFO L85 PathProgramCache]: Analyzing trace with hash 1493584745, now seen corresponding path program 12 times [2024-06-28 03:06:00,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:06:00,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293091946] [2024-06-28 03:06:00,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:06:00,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:06:00,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:06:01,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:06:01,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:06:01,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293091946] [2024-06-28 03:06:01,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293091946] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:06:01,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:06:01,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:06:01,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194823382] [2024-06-28 03:06:01,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:06:01,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:06:01,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:06:01,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:06:01,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:06:01,831 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 03:06:01,831 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 590 places, 653 transitions, 9361 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:06:01,831 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:06:01,831 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 03:06:01,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:06:02,719 INFO L124 PetriNetUnfolderBase]: 1313/2466 cut-off events. [2024-06-28 03:06:02,719 INFO L125 PetriNetUnfolderBase]: For 806674/806674 co-relation queries the response was YES. [2024-06-28 03:06:02,756 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24371 conditions, 2466 events. 1313/2466 cut-off events. For 806674/806674 co-relation queries the response was YES. Maximal size of possible extension queue 295. Compared 16368 event pairs, 77 based on Foata normal form. 2/2466 useless extension candidates. Maximal degree in co-relation 24104. Up to 2155 conditions per place. [2024-06-28 03:06:02,764 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 602 selfloop transitions, 62 changer transitions 0/667 dead transitions. [2024-06-28 03:06:02,764 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 600 places, 667 transitions, 10787 flow [2024-06-28 03:06:02,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:06:02,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:06:02,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-28 03:06:02,765 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835227272727273 [2024-06-28 03:06:02,765 INFO L175 Difference]: Start difference. First operand has 590 places, 653 transitions, 9361 flow. Second operand 11 states and 135 transitions. [2024-06-28 03:06:02,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 600 places, 667 transitions, 10787 flow [2024-06-28 03:06:07,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 591 places, 667 transitions, 10530 flow, removed 32 selfloop flow, removed 9 redundant places. [2024-06-28 03:06:07,808 INFO L231 Difference]: Finished difference. Result has 592 places, 654 transitions, 9303 flow [2024-06-28 03:06:07,809 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=9104, PETRI_DIFFERENCE_MINUEND_PLACES=581, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=653, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=591, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9303, PETRI_PLACES=592, PETRI_TRANSITIONS=654} [2024-06-28 03:06:07,809 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 561 predicate places. [2024-06-28 03:06:07,809 INFO L495 AbstractCegarLoop]: Abstraction has has 592 places, 654 transitions, 9303 flow [2024-06-28 03:06:07,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:06:07,809 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:06:07,809 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:06:07,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable199 [2024-06-28 03:06:07,809 INFO L420 AbstractCegarLoop]: === Iteration 201 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:06:07,809 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:06:07,809 INFO L85 PathProgramCache]: Analyzing trace with hash -904222777, now seen corresponding path program 13 times [2024-06-28 03:06:07,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:06:07,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702459112] [2024-06-28 03:06:07,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:06:07,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:06:07,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:06:08,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:06:08,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:06:08,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702459112] [2024-06-28 03:06:08,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702459112] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:06:08,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:06:08,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:06:08,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514760007] [2024-06-28 03:06:08,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:06:08,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:06:08,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:06:08,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:06:08,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:06:08,982 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 03:06:08,982 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 592 places, 654 transitions, 9303 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:06:08,982 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:06:08,982 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 03:06:08,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:06:09,849 INFO L124 PetriNetUnfolderBase]: 1317/2474 cut-off events. [2024-06-28 03:06:09,849 INFO L125 PetriNetUnfolderBase]: For 814836/814836 co-relation queries the response was YES. [2024-06-28 03:06:09,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24355 conditions, 2474 events. 1317/2474 cut-off events. For 814836/814836 co-relation queries the response was YES. Maximal size of possible extension queue 295. Compared 16462 event pairs, 77 based on Foata normal form. 2/2474 useless extension candidates. Maximal degree in co-relation 24087. Up to 2175 conditions per place. [2024-06-28 03:06:09,894 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 607 selfloop transitions, 59 changer transitions 0/669 dead transitions. [2024-06-28 03:06:09,894 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 602 places, 669 transitions, 10745 flow [2024-06-28 03:06:09,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:06:09,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:06:09,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-28 03:06:09,895 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3778409090909091 [2024-06-28 03:06:09,895 INFO L175 Difference]: Start difference. First operand has 592 places, 654 transitions, 9303 flow. Second operand 11 states and 133 transitions. [2024-06-28 03:06:09,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 602 places, 669 transitions, 10745 flow [2024-06-28 03:06:14,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 593 places, 669 transitions, 10556 flow, removed 33 selfloop flow, removed 9 redundant places. [2024-06-28 03:06:14,734 INFO L231 Difference]: Finished difference. Result has 595 places, 656 transitions, 9326 flow [2024-06-28 03:06:14,734 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=9116, PETRI_DIFFERENCE_MINUEND_PLACES=583, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=654, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=595, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9326, PETRI_PLACES=595, PETRI_TRANSITIONS=656} [2024-06-28 03:06:14,735 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 564 predicate places. [2024-06-28 03:06:14,735 INFO L495 AbstractCegarLoop]: Abstraction has has 595 places, 656 transitions, 9326 flow [2024-06-28 03:06:14,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:06:14,735 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:06:14,735 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:06:14,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable200 [2024-06-28 03:06:14,735 INFO L420 AbstractCegarLoop]: === Iteration 202 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:06:14,736 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:06:14,736 INFO L85 PathProgramCache]: Analyzing trace with hash -704776837, now seen corresponding path program 14 times [2024-06-28 03:06:14,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:06:14,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820651993] [2024-06-28 03:06:14,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:06:14,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:06:14,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:06:16,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:06:16,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:06:16,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820651993] [2024-06-28 03:06:16,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820651993] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:06:16,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:06:16,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:06:16,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9708624] [2024-06-28 03:06:16,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:06:16,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:06:16,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:06:16,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:06:16,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:06:16,209 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 03:06:16,209 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 595 places, 656 transitions, 9326 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:06:16,209 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:06:16,209 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 03:06:16,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:06:17,152 INFO L124 PetriNetUnfolderBase]: 1321/2482 cut-off events. [2024-06-28 03:06:17,152 INFO L125 PetriNetUnfolderBase]: For 822983/822983 co-relation queries the response was YES. [2024-06-28 03:06:17,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24434 conditions, 2482 events. 1321/2482 cut-off events. For 822983/822983 co-relation queries the response was YES. Maximal size of possible extension queue 297. Compared 16509 event pairs, 79 based on Foata normal form. 2/2482 useless extension candidates. Maximal degree in co-relation 24164. Up to 2153 conditions per place. [2024-06-28 03:06:17,199 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 600 selfloop transitions, 67 changer transitions 0/670 dead transitions. [2024-06-28 03:06:17,200 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 605 places, 670 transitions, 10762 flow [2024-06-28 03:06:17,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:06:17,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:06:17,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-28 03:06:17,200 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38920454545454547 [2024-06-28 03:06:17,200 INFO L175 Difference]: Start difference. First operand has 595 places, 656 transitions, 9326 flow. Second operand 11 states and 137 transitions. [2024-06-28 03:06:17,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 605 places, 670 transitions, 10762 flow [2024-06-28 03:06:22,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 597 places, 670 transitions, 10584 flow, removed 34 selfloop flow, removed 8 redundant places. [2024-06-28 03:06:22,718 INFO L231 Difference]: Finished difference. Result has 598 places, 657 transitions, 9361 flow [2024-06-28 03:06:22,718 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=9148, PETRI_DIFFERENCE_MINUEND_PLACES=587, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=656, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=589, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9361, PETRI_PLACES=598, PETRI_TRANSITIONS=657} [2024-06-28 03:06:22,718 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 567 predicate places. [2024-06-28 03:06:22,718 INFO L495 AbstractCegarLoop]: Abstraction has has 598 places, 657 transitions, 9361 flow [2024-06-28 03:06:22,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:06:22,718 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:06:22,718 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:06:22,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable201 [2024-06-28 03:06:22,718 INFO L420 AbstractCegarLoop]: === Iteration 203 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:06:22,719 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:06:22,719 INFO L85 PathProgramCache]: Analyzing trace with hash 2040825645, now seen corresponding path program 15 times [2024-06-28 03:06:22,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:06:22,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370131120] [2024-06-28 03:06:22,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:06:22,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:06:22,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:06:23,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:06:23,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:06:23,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370131120] [2024-06-28 03:06:23,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370131120] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:06:23,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:06:23,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:06:23,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131933193] [2024-06-28 03:06:23,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:06:23,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:06:23,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:06:23,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:06:23,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:06:24,035 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 03:06:24,036 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 598 places, 657 transitions, 9361 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:06:24,036 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:06:24,036 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 03:06:24,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:06:24,960 INFO L124 PetriNetUnfolderBase]: 1325/2492 cut-off events. [2024-06-28 03:06:24,960 INFO L125 PetriNetUnfolderBase]: For 831700/831700 co-relation queries the response was YES. [2024-06-28 03:06:24,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24546 conditions, 2492 events. 1325/2492 cut-off events. For 831700/831700 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 16623 event pairs, 77 based on Foata normal form. 2/2492 useless extension candidates. Maximal degree in co-relation 24275. Up to 2189 conditions per place. [2024-06-28 03:06:25,007 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 612 selfloop transitions, 57 changer transitions 0/672 dead transitions. [2024-06-28 03:06:25,007 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 608 places, 672 transitions, 10805 flow [2024-06-28 03:06:25,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:06:25,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:06:25,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-28 03:06:25,008 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3778409090909091 [2024-06-28 03:06:25,008 INFO L175 Difference]: Start difference. First operand has 598 places, 657 transitions, 9361 flow. Second operand 11 states and 133 transitions. [2024-06-28 03:06:25,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 608 places, 672 transitions, 10805 flow [2024-06-28 03:06:30,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 599 places, 672 transitions, 10604 flow, removed 35 selfloop flow, removed 9 redundant places. [2024-06-28 03:06:30,141 INFO L231 Difference]: Finished difference. Result has 600 places, 658 transitions, 9354 flow [2024-06-28 03:06:30,141 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=9160, PETRI_DIFFERENCE_MINUEND_PLACES=589, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=657, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=600, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9354, PETRI_PLACES=600, PETRI_TRANSITIONS=658} [2024-06-28 03:06:30,141 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 569 predicate places. [2024-06-28 03:06:30,141 INFO L495 AbstractCegarLoop]: Abstraction has has 600 places, 658 transitions, 9354 flow [2024-06-28 03:06:30,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:06:30,141 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:06:30,141 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:06:30,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable202 [2024-06-28 03:06:30,142 INFO L420 AbstractCegarLoop]: === Iteration 204 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:06:30,142 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:06:30,142 INFO L85 PathProgramCache]: Analyzing trace with hash 2046551097, now seen corresponding path program 9 times [2024-06-28 03:06:30,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:06:30,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5621219] [2024-06-28 03:06:30,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:06:30,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:06:30,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:06:31,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:06:31,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:06:31,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5621219] [2024-06-28 03:06:31,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5621219] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:06:31,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:06:31,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:06:31,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044457555] [2024-06-28 03:06:31,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:06:31,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:06:31,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:06:31,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:06:31,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:06:31,446 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 03:06:31,446 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 600 places, 658 transitions, 9354 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:06:31,446 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:06:31,446 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 03:06:31,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:06:32,499 INFO L124 PetriNetUnfolderBase]: 1341/2520 cut-off events. [2024-06-28 03:06:32,499 INFO L125 PetriNetUnfolderBase]: For 881162/881162 co-relation queries the response was YES. [2024-06-28 03:06:32,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25302 conditions, 2520 events. 1341/2520 cut-off events. For 881162/881162 co-relation queries the response was YES. Maximal size of possible extension queue 304. Compared 16847 event pairs, 79 based on Foata normal form. 2/2520 useless extension candidates. Maximal degree in co-relation 25030. Up to 2159 conditions per place. [2024-06-28 03:06:32,549 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 591 selfloop transitions, 87 changer transitions 0/681 dead transitions. [2024-06-28 03:06:32,549 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 612 places, 681 transitions, 11500 flow [2024-06-28 03:06:32,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 03:06:32,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 03:06:32,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 158 transitions. [2024-06-28 03:06:32,549 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3798076923076923 [2024-06-28 03:06:32,550 INFO L175 Difference]: Start difference. First operand has 600 places, 658 transitions, 9354 flow. Second operand 13 states and 158 transitions. [2024-06-28 03:06:32,550 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 612 places, 681 transitions, 11500 flow [2024-06-28 03:06:37,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 603 places, 681 transitions, 11316 flow, removed 36 selfloop flow, removed 9 redundant places. [2024-06-28 03:06:37,886 INFO L231 Difference]: Finished difference. Result has 604 places, 666 transitions, 9715 flow [2024-06-28 03:06:37,887 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=9170, PETRI_DIFFERENCE_MINUEND_PLACES=591, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=658, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=575, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=9715, PETRI_PLACES=604, PETRI_TRANSITIONS=666} [2024-06-28 03:06:37,887 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 573 predicate places. [2024-06-28 03:06:37,887 INFO L495 AbstractCegarLoop]: Abstraction has has 604 places, 666 transitions, 9715 flow [2024-06-28 03:06:37,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:06:37,887 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:06:37,887 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:06:37,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable203 [2024-06-28 03:06:37,887 INFO L420 AbstractCegarLoop]: === Iteration 205 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:06:37,887 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:06:37,887 INFO L85 PathProgramCache]: Analyzing trace with hash 2046551376, now seen corresponding path program 7 times [2024-06-28 03:06:37,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:06:37,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036789625] [2024-06-28 03:06:37,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:06:37,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:06:37,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:06:38,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:06:38,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:06:38,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036789625] [2024-06-28 03:06:38,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036789625] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:06:38,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:06:38,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:06:38,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452419501] [2024-06-28 03:06:38,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:06:38,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:06:38,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:06:38,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:06:38,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:06:39,059 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 03:06:39,059 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 604 places, 666 transitions, 9715 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:06:39,059 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:06:39,059 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 03:06:39,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:06:40,043 INFO L124 PetriNetUnfolderBase]: 1361/2564 cut-off events. [2024-06-28 03:06:40,043 INFO L125 PetriNetUnfolderBase]: For 1085707/1085707 co-relation queries the response was YES. [2024-06-28 03:06:40,084 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25696 conditions, 2564 events. 1361/2564 cut-off events. For 1085707/1085707 co-relation queries the response was YES. Maximal size of possible extension queue 307. Compared 17220 event pairs, 83 based on Foata normal form. 12/2574 useless extension candidates. Maximal degree in co-relation 25423. Up to 2183 conditions per place. [2024-06-28 03:06:40,094 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 609 selfloop transitions, 63 changer transitions 9/684 dead transitions. [2024-06-28 03:06:40,094 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 614 places, 684 transitions, 11271 flow [2024-06-28 03:06:40,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:06:40,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:06:40,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 141 transitions. [2024-06-28 03:06:40,095 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4005681818181818 [2024-06-28 03:06:40,095 INFO L175 Difference]: Start difference. First operand has 604 places, 666 transitions, 9715 flow. Second operand 11 states and 141 transitions. [2024-06-28 03:06:40,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 614 places, 684 transitions, 11271 flow [2024-06-28 03:06:46,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 605 places, 684 transitions, 11005 flow, removed 84 selfloop flow, removed 9 redundant places. [2024-06-28 03:06:46,331 INFO L231 Difference]: Finished difference. Result has 606 places, 662 transitions, 9537 flow [2024-06-28 03:06:46,332 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=9449, PETRI_DIFFERENCE_MINUEND_PLACES=595, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=666, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=603, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9537, PETRI_PLACES=606, PETRI_TRANSITIONS=662} [2024-06-28 03:06:46,332 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 575 predicate places. [2024-06-28 03:06:46,332 INFO L495 AbstractCegarLoop]: Abstraction has has 606 places, 662 transitions, 9537 flow [2024-06-28 03:06:46,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:06:46,332 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:06:46,332 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:06:46,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable204 [2024-06-28 03:06:46,332 INFO L420 AbstractCegarLoop]: === Iteration 206 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:06:46,333 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:06:46,333 INFO L85 PathProgramCache]: Analyzing trace with hash 1493792507, now seen corresponding path program 10 times [2024-06-28 03:06:46,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:06:46,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219625447] [2024-06-28 03:06:46,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:06:46,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:06:46,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:06:48,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:06:48,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:06:48,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219625447] [2024-06-28 03:06:48,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219625447] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:06:48,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:06:48,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:06:48,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819144618] [2024-06-28 03:06:48,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:06:48,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:06:48,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:06:48,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:06:48,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:06:48,176 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 03:06:48,176 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 606 places, 662 transitions, 9537 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:06:48,176 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:06:48,176 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 03:06:48,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:06:49,158 INFO L124 PetriNetUnfolderBase]: 1335/2514 cut-off events. [2024-06-28 03:06:49,158 INFO L125 PetriNetUnfolderBase]: For 895743/895743 co-relation queries the response was YES. [2024-06-28 03:06:49,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25297 conditions, 2514 events. 1335/2514 cut-off events. For 895743/895743 co-relation queries the response was YES. Maximal size of possible extension queue 305. Compared 16822 event pairs, 79 based on Foata normal form. 2/2514 useless extension candidates. Maximal degree in co-relation 25022. Up to 2183 conditions per place. [2024-06-28 03:06:49,209 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 601 selfloop transitions, 75 changer transitions 0/679 dead transitions. [2024-06-28 03:06:49,209 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 617 places, 679 transitions, 11077 flow [2024-06-28 03:06:49,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:06:49,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:06:49,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 146 transitions. [2024-06-28 03:06:49,210 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3802083333333333 [2024-06-28 03:06:49,210 INFO L175 Difference]: Start difference. First operand has 606 places, 662 transitions, 9537 flow. Second operand 12 states and 146 transitions. [2024-06-28 03:06:49,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 617 places, 679 transitions, 11077 flow [2024-06-28 03:06:55,394 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 608 places, 679 transitions, 10916 flow, removed 19 selfloop flow, removed 9 redundant places. [2024-06-28 03:06:55,402 INFO L231 Difference]: Finished difference. Result has 609 places, 666 transitions, 9700 flow [2024-06-28 03:06:55,402 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=9376, PETRI_DIFFERENCE_MINUEND_PLACES=597, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=662, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=587, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9700, PETRI_PLACES=609, PETRI_TRANSITIONS=666} [2024-06-28 03:06:55,402 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 578 predicate places. [2024-06-28 03:06:55,402 INFO L495 AbstractCegarLoop]: Abstraction has has 609 places, 666 transitions, 9700 flow [2024-06-28 03:06:55,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:06:55,402 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:06:55,402 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:06:55,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable205 [2024-06-28 03:06:55,403 INFO L420 AbstractCegarLoop]: === Iteration 207 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:06:55,403 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:06:55,403 INFO L85 PathProgramCache]: Analyzing trace with hash 225301794, now seen corresponding path program 8 times [2024-06-28 03:06:55,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:06:55,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127750708] [2024-06-28 03:06:55,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:06:55,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:06:55,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:06:57,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:06:57,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:06:57,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127750708] [2024-06-28 03:06:57,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127750708] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:06:57,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:06:57,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:06:57,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371458662] [2024-06-28 03:06:57,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:06:57,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:06:57,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:06:57,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:06:57,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:06:57,200 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 03:06:57,200 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 609 places, 666 transitions, 9700 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:06:57,200 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:06:57,200 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 03:06:57,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:06:58,139 INFO L124 PetriNetUnfolderBase]: 1345/2531 cut-off events. [2024-06-28 03:06:58,139 INFO L125 PetriNetUnfolderBase]: For 904957/904957 co-relation queries the response was YES. [2024-06-28 03:06:58,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25468 conditions, 2531 events. 1345/2531 cut-off events. For 904957/904957 co-relation queries the response was YES. Maximal size of possible extension queue 307. Compared 16939 event pairs, 79 based on Foata normal form. 2/2531 useless extension candidates. Maximal degree in co-relation 25192. Up to 1993 conditions per place. [2024-06-28 03:06:58,189 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 542 selfloop transitions, 143 changer transitions 0/688 dead transitions. [2024-06-28 03:06:58,189 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 620 places, 688 transitions, 11254 flow [2024-06-28 03:06:58,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:06:58,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:06:58,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 150 transitions. [2024-06-28 03:06:58,190 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-28 03:06:58,190 INFO L175 Difference]: Start difference. First operand has 609 places, 666 transitions, 9700 flow. Second operand 12 states and 150 transitions. [2024-06-28 03:06:58,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 620 places, 688 transitions, 11254 flow [2024-06-28 03:07:04,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 610 places, 688 transitions, 10998 flow, removed 56 selfloop flow, removed 10 redundant places. [2024-06-28 03:07:04,176 INFO L231 Difference]: Finished difference. Result has 613 places, 674 transitions, 9968 flow [2024-06-28 03:07:04,177 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=9444, PETRI_DIFFERENCE_MINUEND_PLACES=599, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=666, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=135, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=525, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9968, PETRI_PLACES=613, PETRI_TRANSITIONS=674} [2024-06-28 03:07:04,177 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 582 predicate places. [2024-06-28 03:07:04,177 INFO L495 AbstractCegarLoop]: Abstraction has has 613 places, 674 transitions, 9968 flow [2024-06-28 03:07:04,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:07:04,177 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:07:04,177 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:07:04,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable206 [2024-06-28 03:07:04,178 INFO L420 AbstractCegarLoop]: === Iteration 208 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:07:04,178 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:07:04,178 INFO L85 PathProgramCache]: Analyzing trace with hash 1493590697, now seen corresponding path program 11 times [2024-06-28 03:07:04,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:07:04,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619386803] [2024-06-28 03:07:04,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:07:04,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:07:04,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:07:05,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:07:05,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:07:05,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619386803] [2024-06-28 03:07:05,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619386803] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:07:05,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:07:05,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:07:05,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580216208] [2024-06-28 03:07:05,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:07:05,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:07:05,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:07:05,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:07:05,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:07:06,066 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 03:07:06,066 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 613 places, 674 transitions, 9968 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:07:06,067 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:07:06,067 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 03:07:06,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:07:07,273 INFO L124 PetriNetUnfolderBase]: 1341/2526 cut-off events. [2024-06-28 03:07:07,273 INFO L125 PetriNetUnfolderBase]: For 870841/870841 co-relation queries the response was YES. [2024-06-28 03:07:07,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25255 conditions, 2526 events. 1341/2526 cut-off events. For 870841/870841 co-relation queries the response was YES. Maximal size of possible extension queue 308. Compared 16913 event pairs, 81 based on Foata normal form. 2/2526 useless extension candidates. Maximal degree in co-relation 24976. Up to 2195 conditions per place. [2024-06-28 03:07:07,322 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 609 selfloop transitions, 75 changer transitions 0/687 dead transitions. [2024-06-28 03:07:07,323 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 624 places, 687 transitions, 11366 flow [2024-06-28 03:07:07,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:07:07,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:07:07,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 147 transitions. [2024-06-28 03:07:07,323 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3828125 [2024-06-28 03:07:07,323 INFO L175 Difference]: Start difference. First operand has 613 places, 674 transitions, 9968 flow. Second operand 12 states and 147 transitions. [2024-06-28 03:07:07,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 624 places, 687 transitions, 11366 flow [2024-06-28 03:07:12,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 617 places, 687 transitions, 10991 flow, removed 83 selfloop flow, removed 7 redundant places. [2024-06-28 03:07:12,958 INFO L231 Difference]: Finished difference. Result has 618 places, 674 transitions, 9751 flow [2024-06-28 03:07:12,959 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=9593, PETRI_DIFFERENCE_MINUEND_PLACES=606, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=674, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=599, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9751, PETRI_PLACES=618, PETRI_TRANSITIONS=674} [2024-06-28 03:07:12,959 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 587 predicate places. [2024-06-28 03:07:12,959 INFO L495 AbstractCegarLoop]: Abstraction has has 618 places, 674 transitions, 9751 flow [2024-06-28 03:07:12,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:07:12,959 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:07:12,959 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:07:12,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable207 [2024-06-28 03:07:12,959 INFO L420 AbstractCegarLoop]: === Iteration 209 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:07:12,959 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:07:12,959 INFO L85 PathProgramCache]: Analyzing trace with hash 146590734, now seen corresponding path program 9 times [2024-06-28 03:07:12,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:07:12,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022063033] [2024-06-28 03:07:12,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:07:12,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:07:12,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:07:14,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:07:14,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:07:14,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022063033] [2024-06-28 03:07:14,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022063033] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:07:14,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:07:14,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:07:14,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901494895] [2024-06-28 03:07:14,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:07:14,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:07:14,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:07:14,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:07:14,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:07:14,428 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 03:07:14,428 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 618 places, 674 transitions, 9751 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:07:14,428 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:07:14,429 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 03:07:14,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:07:15,404 INFO L124 PetriNetUnfolderBase]: 1358/2558 cut-off events. [2024-06-28 03:07:15,405 INFO L125 PetriNetUnfolderBase]: For 920630/920630 co-relation queries the response was YES. [2024-06-28 03:07:15,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25708 conditions, 2558 events. 1358/2558 cut-off events. For 920630/920630 co-relation queries the response was YES. Maximal size of possible extension queue 312. Compared 17223 event pairs, 80 based on Foata normal form. 2/2558 useless extension candidates. Maximal degree in co-relation 25428. Up to 1979 conditions per place. [2024-06-28 03:07:15,457 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 543 selfloop transitions, 149 changer transitions 0/695 dead transitions. [2024-06-28 03:07:15,457 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 629 places, 695 transitions, 11711 flow [2024-06-28 03:07:15,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:07:15,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:07:15,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 154 transitions. [2024-06-28 03:07:15,458 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4010416666666667 [2024-06-28 03:07:15,458 INFO L175 Difference]: Start difference. First operand has 618 places, 674 transitions, 9751 flow. Second operand 12 states and 154 transitions. [2024-06-28 03:07:15,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 629 places, 695 transitions, 11711 flow [2024-06-28 03:07:21,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 618 places, 695 transitions, 11534 flow, removed 8 selfloop flow, removed 11 redundant places. [2024-06-28 03:07:21,494 INFO L231 Difference]: Finished difference. Result has 620 places, 679 transitions, 10026 flow [2024-06-28 03:07:21,494 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=9574, PETRI_DIFFERENCE_MINUEND_PLACES=607, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=674, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=145, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=526, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=10026, PETRI_PLACES=620, PETRI_TRANSITIONS=679} [2024-06-28 03:07:21,494 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 589 predicate places. [2024-06-28 03:07:21,495 INFO L495 AbstractCegarLoop]: Abstraction has has 620 places, 679 transitions, 10026 flow [2024-06-28 03:07:21,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:07:21,495 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:07:21,495 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:07:21,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable208 [2024-06-28 03:07:21,495 INFO L420 AbstractCegarLoop]: === Iteration 210 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:07:21,495 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:07:21,495 INFO L85 PathProgramCache]: Analyzing trace with hash 515219183, now seen corresponding path program 12 times [2024-06-28 03:07:21,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:07:21,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194012742] [2024-06-28 03:07:21,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:07:21,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:07:21,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:07:23,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:07:23,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:07:23,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194012742] [2024-06-28 03:07:23,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194012742] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:07:23,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:07:23,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:07:23,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265881022] [2024-06-28 03:07:23,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:07:23,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:07:23,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:07:23,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:07:23,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:07:23,222 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 03:07:23,222 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 620 places, 679 transitions, 10026 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:07:23,222 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:07:23,222 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 03:07:23,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:07:24,324 INFO L124 PetriNetUnfolderBase]: 1367/2576 cut-off events. [2024-06-28 03:07:24,325 INFO L125 PetriNetUnfolderBase]: For 952981/952981 co-relation queries the response was YES. [2024-06-28 03:07:24,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26224 conditions, 2576 events. 1367/2576 cut-off events. For 952981/952981 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 17372 event pairs, 82 based on Foata normal form. 3/2577 useless extension candidates. Maximal degree in co-relation 25942. Up to 1639 conditions per place. [2024-06-28 03:07:24,378 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 438 selfloop transitions, 261 changer transitions 0/702 dead transitions. [2024-06-28 03:07:24,378 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 631 places, 702 transitions, 12938 flow [2024-06-28 03:07:24,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:07:24,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:07:24,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 160 transitions. [2024-06-28 03:07:24,379 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-28 03:07:24,379 INFO L175 Difference]: Start difference. First operand has 620 places, 679 transitions, 10026 flow. Second operand 12 states and 160 transitions. [2024-06-28 03:07:24,379 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 631 places, 702 transitions, 12938 flow [2024-06-28 03:07:30,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 624 places, 702 transitions, 12684 flow, removed 29 selfloop flow, removed 7 redundant places. [2024-06-28 03:07:30,938 INFO L231 Difference]: Finished difference. Result has 626 places, 685 transitions, 10547 flow [2024-06-28 03:07:30,938 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=9773, PETRI_DIFFERENCE_MINUEND_PLACES=613, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=679, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=255, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=424, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=10547, PETRI_PLACES=626, PETRI_TRANSITIONS=685} [2024-06-28 03:07:30,938 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 595 predicate places. [2024-06-28 03:07:30,938 INFO L495 AbstractCegarLoop]: Abstraction has has 626 places, 685 transitions, 10547 flow [2024-06-28 03:07:30,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:07:30,938 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:07:30,938 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:07:30,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable209 [2024-06-28 03:07:30,939 INFO L420 AbstractCegarLoop]: === Iteration 211 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:07:30,939 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:07:30,939 INFO L85 PathProgramCache]: Analyzing trace with hash -31198716, now seen corresponding path program 10 times [2024-06-28 03:07:30,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:07:30,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605185765] [2024-06-28 03:07:30,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:07:30,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:07:30,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:07:32,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:07:32,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:07:32,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605185765] [2024-06-28 03:07:32,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605185765] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:07:32,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:07:32,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:07:32,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176243516] [2024-06-28 03:07:32,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:07:32,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:07:32,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:07:32,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:07:32,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:07:32,492 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 03:07:32,492 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 626 places, 685 transitions, 10547 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:07:32,492 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:07:32,492 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 03:07:32,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:07:33,577 INFO L124 PetriNetUnfolderBase]: 1371/2584 cut-off events. [2024-06-28 03:07:33,577 INFO L125 PetriNetUnfolderBase]: For 951690/951690 co-relation queries the response was YES. [2024-06-28 03:07:33,615 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26731 conditions, 2584 events. 1371/2584 cut-off events. For 951690/951690 co-relation queries the response was YES. Maximal size of possible extension queue 319. Compared 17489 event pairs, 84 based on Foata normal form. 2/2584 useless extension candidates. Maximal degree in co-relation 26446. Up to 1944 conditions per place. [2024-06-28 03:07:33,625 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 542 selfloop transitions, 155 changer transitions 0/700 dead transitions. [2024-06-28 03:07:33,625 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 636 places, 700 transitions, 12028 flow [2024-06-28 03:07:33,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:07:33,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:07:33,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 143 transitions. [2024-06-28 03:07:33,626 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-28 03:07:33,626 INFO L175 Difference]: Start difference. First operand has 626 places, 685 transitions, 10547 flow. Second operand 11 states and 143 transitions. [2024-06-28 03:07:33,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 636 places, 700 transitions, 12028 flow [2024-06-28 03:07:39,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 625 places, 700 transitions, 11326 flow, removed 88 selfloop flow, removed 11 redundant places. [2024-06-28 03:07:39,850 INFO L231 Difference]: Finished difference. Result has 626 places, 686 transitions, 10208 flow [2024-06-28 03:07:39,850 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=9845, PETRI_DIFFERENCE_MINUEND_PLACES=615, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=685, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=154, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=530, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10208, PETRI_PLACES=626, PETRI_TRANSITIONS=686} [2024-06-28 03:07:39,850 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 595 predicate places. [2024-06-28 03:07:39,850 INFO L495 AbstractCegarLoop]: Abstraction has has 626 places, 686 transitions, 10208 flow [2024-06-28 03:07:39,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:07:39,850 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:07:39,850 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:07:39,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable210 [2024-06-28 03:07:39,850 INFO L420 AbstractCegarLoop]: === Iteration 212 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:07:39,851 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:07:39,851 INFO L85 PathProgramCache]: Analyzing trace with hash 234824994, now seen corresponding path program 11 times [2024-06-28 03:07:39,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:07:39,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565816751] [2024-06-28 03:07:39,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:07:39,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:07:39,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:07:41,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:07:41,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:07:41,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565816751] [2024-06-28 03:07:41,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565816751] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:07:41,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:07:41,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:07:41,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367291373] [2024-06-28 03:07:41,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:07:41,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:07:41,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:07:41,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:07:41,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:07:41,794 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 03:07:41,794 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 626 places, 686 transitions, 10208 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:07:41,794 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:07:41,794 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 03:07:41,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:07:42,855 INFO L124 PetriNetUnfolderBase]: 1404/2650 cut-off events. [2024-06-28 03:07:42,855 INFO L125 PetriNetUnfolderBase]: For 1148418/1148418 co-relation queries the response was YES. [2024-06-28 03:07:42,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29004 conditions, 2650 events. 1404/2650 cut-off events. For 1148418/1148418 co-relation queries the response was YES. Maximal size of possible extension queue 322. Compared 17951 event pairs, 97 based on Foata normal form. 2/2650 useless extension candidates. Maximal degree in co-relation 28720. Up to 1682 conditions per place. [2024-06-28 03:07:42,909 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 497 selfloop transitions, 208 changer transitions 0/708 dead transitions. [2024-06-28 03:07:42,909 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 637 places, 708 transitions, 12246 flow [2024-06-28 03:07:42,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:07:42,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:07:42,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 159 transitions. [2024-06-28 03:07:42,909 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4140625 [2024-06-28 03:07:42,909 INFO L175 Difference]: Start difference. First operand has 626 places, 686 transitions, 10208 flow. Second operand 12 states and 159 transitions. [2024-06-28 03:07:42,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 637 places, 708 transitions, 12246 flow [2024-06-28 03:07:51,397 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 628 places, 708 transitions, 11895 flow, removed 22 selfloop flow, removed 9 redundant places. [2024-06-28 03:07:51,404 INFO L231 Difference]: Finished difference. Result has 629 places, 688 transitions, 10375 flow [2024-06-28 03:07:51,404 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=9857, PETRI_DIFFERENCE_MINUEND_PLACES=617, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=686, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=207, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=479, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=10375, PETRI_PLACES=629, PETRI_TRANSITIONS=688} [2024-06-28 03:07:51,405 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 598 predicate places. [2024-06-28 03:07:51,405 INFO L495 AbstractCegarLoop]: Abstraction has has 629 places, 688 transitions, 10375 flow [2024-06-28 03:07:51,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:07:51,405 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:07:51,405 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:07:51,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable211 [2024-06-28 03:07:51,405 INFO L420 AbstractCegarLoop]: === Iteration 213 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:07:51,406 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:07:51,406 INFO L85 PathProgramCache]: Analyzing trace with hash 1878886198, now seen corresponding path program 12 times [2024-06-28 03:07:51,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:07:51,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098922487] [2024-06-28 03:07:51,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:07:51,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:07:51,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:07:52,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:07:52,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:07:52,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098922487] [2024-06-28 03:07:52,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098922487] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:07:52,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:07:52,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:07:52,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738995908] [2024-06-28 03:07:52,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:07:52,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:07:52,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:07:52,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:07:52,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:07:52,503 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 03:07:52,503 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 629 places, 688 transitions, 10375 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:07:52,503 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:07:52,503 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 03:07:52,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:07:53,488 INFO L124 PetriNetUnfolderBase]: 1415/2670 cut-off events. [2024-06-28 03:07:53,488 INFO L125 PetriNetUnfolderBase]: For 1203358/1203358 co-relation queries the response was YES. [2024-06-28 03:07:53,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29845 conditions, 2670 events. 1415/2670 cut-off events. For 1203358/1203358 co-relation queries the response was YES. Maximal size of possible extension queue 327. Compared 18126 event pairs, 100 based on Foata normal form. 2/2670 useless extension candidates. Maximal degree in co-relation 29560. Up to 2005 conditions per place. [2024-06-28 03:07:53,541 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 555 selfloop transitions, 147 changer transitions 0/705 dead transitions. [2024-06-28 03:07:53,541 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 639 places, 705 transitions, 12329 flow [2024-06-28 03:07:53,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:07:53,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:07:53,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 145 transitions. [2024-06-28 03:07:53,542 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4119318181818182 [2024-06-28 03:07:53,542 INFO L175 Difference]: Start difference. First operand has 629 places, 688 transitions, 10375 flow. Second operand 11 states and 145 transitions. [2024-06-28 03:07:53,542 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 639 places, 705 transitions, 12329 flow [2024-06-28 03:08:01,651 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 631 places, 705 transitions, 11952 flow, removed 37 selfloop flow, removed 8 redundant places. [2024-06-28 03:08:01,659 INFO L231 Difference]: Finished difference. Result has 632 places, 690 transitions, 10398 flow [2024-06-28 03:08:01,659 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=10002, PETRI_DIFFERENCE_MINUEND_PLACES=621, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=688, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=146, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=542, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10398, PETRI_PLACES=632, PETRI_TRANSITIONS=690} [2024-06-28 03:08:01,660 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 601 predicate places. [2024-06-28 03:08:01,660 INFO L495 AbstractCegarLoop]: Abstraction has has 632 places, 690 transitions, 10398 flow [2024-06-28 03:08:01,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:08:01,660 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:08:01,660 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:08:01,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable212 [2024-06-28 03:08:01,660 INFO L420 AbstractCegarLoop]: === Iteration 214 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:08:01,660 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:08:01,661 INFO L85 PathProgramCache]: Analyzing trace with hash -31408245, now seen corresponding path program 13 times [2024-06-28 03:08:01,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:08:01,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307794193] [2024-06-28 03:08:01,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:08:01,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:08:01,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:08:03,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:08:03,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:08:03,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307794193] [2024-06-28 03:08:03,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307794193] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:08:03,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:08:03,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:08:03,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614260505] [2024-06-28 03:08:03,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:08:03,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:08:03,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:08:03,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:08:03,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:08:03,365 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 03:08:03,365 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 632 places, 690 transitions, 10398 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:08:03,365 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:08:03,365 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 03:08:03,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:08:04,711 INFO L124 PetriNetUnfolderBase]: 1411/2666 cut-off events. [2024-06-28 03:08:04,711 INFO L125 PetriNetUnfolderBase]: For 1176292/1176292 co-relation queries the response was YES. [2024-06-28 03:08:04,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29299 conditions, 2666 events. 1411/2666 cut-off events. For 1176292/1176292 co-relation queries the response was YES. Maximal size of possible extension queue 326. Compared 18102 event pairs, 104 based on Foata normal form. 2/2666 useless extension candidates. Maximal degree in co-relation 29013. Up to 1731 conditions per place. [2024-06-28 03:08:04,765 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 430 selfloop transitions, 272 changer transitions 0/705 dead transitions. [2024-06-28 03:08:04,765 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 643 places, 705 transitions, 12672 flow [2024-06-28 03:08:04,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:08:04,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:08:04,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 157 transitions. [2024-06-28 03:08:04,766 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4088541666666667 [2024-06-28 03:08:04,766 INFO L175 Difference]: Start difference. First operand has 632 places, 690 transitions, 10398 flow. Second operand 12 states and 157 transitions. [2024-06-28 03:08:04,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 643 places, 705 transitions, 12672 flow [2024-06-28 03:08:12,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 636 places, 705 transitions, 12329 flow, removed 78 selfloop flow, removed 7 redundant places. [2024-06-28 03:08:12,890 INFO L231 Difference]: Finished difference. Result has 637 places, 690 transitions, 10607 flow [2024-06-28 03:08:12,890 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=10055, PETRI_DIFFERENCE_MINUEND_PLACES=625, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=690, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=272, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=418, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=10607, PETRI_PLACES=637, PETRI_TRANSITIONS=690} [2024-06-28 03:08:12,890 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 606 predicate places. [2024-06-28 03:08:12,890 INFO L495 AbstractCegarLoop]: Abstraction has has 637 places, 690 transitions, 10607 flow [2024-06-28 03:08:12,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:08:12,890 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:08:12,890 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:08:12,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable213 [2024-06-28 03:08:12,890 INFO L420 AbstractCegarLoop]: === Iteration 215 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:08:12,891 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:08:12,891 INFO L85 PathProgramCache]: Analyzing trace with hash 528694555, now seen corresponding path program 14 times [2024-06-28 03:08:12,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:08:12,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875578791] [2024-06-28 03:08:12,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:08:12,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:08:12,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:08:14,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:08:14,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:08:14,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875578791] [2024-06-28 03:08:14,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875578791] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:08:14,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:08:14,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:08:14,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18667816] [2024-06-28 03:08:14,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:08:14,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:08:14,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:08:14,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:08:14,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:08:14,569 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 03:08:14,569 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 637 places, 690 transitions, 10607 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:08:14,569 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:08:14,569 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 03:08:14,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:08:15,836 INFO L124 PetriNetUnfolderBase]: 1407/2660 cut-off events. [2024-06-28 03:08:15,836 INFO L125 PetriNetUnfolderBase]: For 1141909/1141909 co-relation queries the response was YES. [2024-06-28 03:08:15,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29128 conditions, 2660 events. 1407/2660 cut-off events. For 1141909/1141909 co-relation queries the response was YES. Maximal size of possible extension queue 326. Compared 18096 event pairs, 104 based on Foata normal form. 2/2660 useless extension candidates. Maximal degree in co-relation 28840. Up to 1727 conditions per place. [2024-06-28 03:08:15,884 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 451 selfloop transitions, 252 changer transitions 0/706 dead transitions. [2024-06-28 03:08:15,884 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 648 places, 706 transitions, 12898 flow [2024-06-28 03:08:15,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:08:15,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:08:15,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 159 transitions. [2024-06-28 03:08:15,885 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4140625 [2024-06-28 03:08:15,885 INFO L175 Difference]: Start difference. First operand has 637 places, 690 transitions, 10607 flow. Second operand 12 states and 159 transitions. [2024-06-28 03:08:15,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 648 places, 706 transitions, 12898 flow [2024-06-28 03:08:23,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 637 places, 706 transitions, 12228 flow, removed 58 selfloop flow, removed 11 redundant places. [2024-06-28 03:08:23,771 INFO L231 Difference]: Finished difference. Result has 638 places, 690 transitions, 10449 flow [2024-06-28 03:08:23,771 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=9937, PETRI_DIFFERENCE_MINUEND_PLACES=626, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=690, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=252, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=438, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=10449, PETRI_PLACES=638, PETRI_TRANSITIONS=690} [2024-06-28 03:08:23,772 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 607 predicate places. [2024-06-28 03:08:23,772 INFO L495 AbstractCegarLoop]: Abstraction has has 638 places, 690 transitions, 10449 flow [2024-06-28 03:08:23,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:08:23,772 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:08:23,772 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:08:23,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable214 [2024-06-28 03:08:23,772 INFO L420 AbstractCegarLoop]: === Iteration 216 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:08:23,772 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:08:23,772 INFO L85 PathProgramCache]: Analyzing trace with hash 778045225, now seen corresponding path program 15 times [2024-06-28 03:08:23,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:08:23,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655558993] [2024-06-28 03:08:23,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:08:23,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:08:23,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:08:25,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:08:25,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:08:25,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655558993] [2024-06-28 03:08:25,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655558993] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:08:25,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:08:25,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:08:25,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089767290] [2024-06-28 03:08:25,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:08:25,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:08:25,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:08:25,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:08:25,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:08:25,459 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 03:08:25,459 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 638 places, 690 transitions, 10449 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:08:25,459 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:08:25,459 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 03:08:25,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:08:26,732 INFO L124 PetriNetUnfolderBase]: 1403/2654 cut-off events. [2024-06-28 03:08:26,732 INFO L125 PetriNetUnfolderBase]: For 1107033/1107033 co-relation queries the response was YES. [2024-06-28 03:08:26,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28510 conditions, 2654 events. 1403/2654 cut-off events. For 1107033/1107033 co-relation queries the response was YES. Maximal size of possible extension queue 326. Compared 18036 event pairs, 104 based on Foata normal form. 2/2654 useless extension candidates. Maximal degree in co-relation 28221. Up to 1723 conditions per place. [2024-06-28 03:08:26,780 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 428 selfloop transitions, 273 changer transitions 0/704 dead transitions. [2024-06-28 03:08:26,781 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 649 places, 704 transitions, 12305 flow [2024-06-28 03:08:26,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:08:26,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:08:26,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 154 transitions. [2024-06-28 03:08:26,781 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4010416666666667 [2024-06-28 03:08:26,781 INFO L175 Difference]: Start difference. First operand has 638 places, 690 transitions, 10449 flow. Second operand 12 states and 154 transitions. [2024-06-28 03:08:26,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 649 places, 704 transitions, 12305 flow [2024-06-28 03:08:35,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 639 places, 704 transitions, 11835 flow, removed 58 selfloop flow, removed 10 redundant places. [2024-06-28 03:08:35,093 INFO L231 Difference]: Finished difference. Result has 640 places, 690 transitions, 10533 flow [2024-06-28 03:08:35,093 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=9979, PETRI_DIFFERENCE_MINUEND_PLACES=628, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=690, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=273, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=417, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=10533, PETRI_PLACES=640, PETRI_TRANSITIONS=690} [2024-06-28 03:08:35,093 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 609 predicate places. [2024-06-28 03:08:35,093 INFO L495 AbstractCegarLoop]: Abstraction has has 640 places, 690 transitions, 10533 flow [2024-06-28 03:08:35,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:08:35,093 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:08:35,093 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:08:35,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable215 [2024-06-28 03:08:35,094 INFO L420 AbstractCegarLoop]: === Iteration 217 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:08:35,094 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:08:35,094 INFO L85 PathProgramCache]: Analyzing trace with hash -23789406, now seen corresponding path program 13 times [2024-06-28 03:08:35,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:08:35,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579803515] [2024-06-28 03:08:35,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:08:35,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:08:35,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:08:36,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:08:36,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:08:36,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579803515] [2024-06-28 03:08:36,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579803515] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:08:36,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:08:36,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:08:36,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810909708] [2024-06-28 03:08:36,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:08:36,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:08:36,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:08:36,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:08:36,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:08:36,205 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 03:08:36,205 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 640 places, 690 transitions, 10533 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:08:36,205 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:08:36,205 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 03:08:36,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:08:37,125 INFO L124 PetriNetUnfolderBase]: 1400/2647 cut-off events. [2024-06-28 03:08:37,125 INFO L125 PetriNetUnfolderBase]: For 1073240/1073240 co-relation queries the response was YES. [2024-06-28 03:08:37,170 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28082 conditions, 2647 events. 1400/2647 cut-off events. For 1073240/1073240 co-relation queries the response was YES. Maximal size of possible extension queue 327. Compared 17978 event pairs, 101 based on Foata normal form. 2/2647 useless extension candidates. Maximal degree in co-relation 27792. Up to 2009 conditions per place. [2024-06-28 03:08:37,180 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 553 selfloop transitions, 148 changer transitions 0/704 dead transitions. [2024-06-28 03:08:37,181 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 650 places, 704 transitions, 11976 flow [2024-06-28 03:08:37,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:08:37,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:08:37,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 144 transitions. [2024-06-28 03:08:37,181 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-06-28 03:08:37,181 INFO L175 Difference]: Start difference. First operand has 640 places, 690 transitions, 10533 flow. Second operand 11 states and 144 transitions. [2024-06-28 03:08:37,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 650 places, 704 transitions, 11976 flow [2024-06-28 03:08:43,426 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 639 places, 704 transitions, 11372 flow, removed 21 selfloop flow, removed 11 redundant places. [2024-06-28 03:08:43,433 INFO L231 Difference]: Finished difference. Result has 640 places, 690 transitions, 10230 flow [2024-06-28 03:08:43,434 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=9929, PETRI_DIFFERENCE_MINUEND_PLACES=629, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=690, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=148, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=542, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10230, PETRI_PLACES=640, PETRI_TRANSITIONS=690} [2024-06-28 03:08:43,434 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 609 predicate places. [2024-06-28 03:08:43,434 INFO L495 AbstractCegarLoop]: Abstraction has has 640 places, 690 transitions, 10230 flow [2024-06-28 03:08:43,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:08:43,434 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:08:43,434 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:08:43,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable216 [2024-06-28 03:08:43,434 INFO L420 AbstractCegarLoop]: === Iteration 218 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:08:43,434 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:08:43,434 INFO L85 PathProgramCache]: Analyzing trace with hash 225561264, now seen corresponding path program 14 times [2024-06-28 03:08:43,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:08:43,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509062570] [2024-06-28 03:08:43,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:08:43,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:08:43,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:08:44,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:08:44,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:08:44,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509062570] [2024-06-28 03:08:44,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509062570] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:08:44,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:08:44,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:08:44,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709274512] [2024-06-28 03:08:44,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:08:44,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:08:44,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:08:44,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:08:44,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:08:44,589 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 03:08:44,589 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 640 places, 690 transitions, 10230 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:08:44,589 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:08:44,589 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 03:08:44,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:08:45,527 INFO L124 PetriNetUnfolderBase]: 1401/2650 cut-off events. [2024-06-28 03:08:45,527 INFO L125 PetriNetUnfolderBase]: For 1081746/1081746 co-relation queries the response was YES. [2024-06-28 03:08:45,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27450 conditions, 2650 events. 1401/2650 cut-off events. For 1081746/1081746 co-relation queries the response was YES. Maximal size of possible extension queue 329. Compared 18016 event pairs, 102 based on Foata normal form. 4/2652 useless extension candidates. Maximal degree in co-relation 27159. Up to 1996 conditions per place. [2024-06-28 03:08:45,580 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 538 selfloop transitions, 163 changer transitions 0/704 dead transitions. [2024-06-28 03:08:45,580 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 650 places, 704 transitions, 11712 flow [2024-06-28 03:08:45,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:08:45,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:08:45,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 142 transitions. [2024-06-28 03:08:45,580 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4034090909090909 [2024-06-28 03:08:45,581 INFO L175 Difference]: Start difference. First operand has 640 places, 690 transitions, 10230 flow. Second operand 11 states and 142 transitions. [2024-06-28 03:08:45,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 650 places, 704 transitions, 11712 flow [2024-06-28 03:08:52,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 640 places, 704 transitions, 11376 flow, removed 17 selfloop flow, removed 10 redundant places. [2024-06-28 03:08:52,109 INFO L231 Difference]: Finished difference. Result has 641 places, 691 transitions, 10283 flow [2024-06-28 03:08:52,109 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=9894, PETRI_DIFFERENCE_MINUEND_PLACES=630, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=690, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=162, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=527, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10283, PETRI_PLACES=641, PETRI_TRANSITIONS=691} [2024-06-28 03:08:52,109 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 610 predicate places. [2024-06-28 03:08:52,109 INFO L495 AbstractCegarLoop]: Abstraction has has 641 places, 691 transitions, 10283 flow [2024-06-28 03:08:52,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:08:52,110 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:08:52,110 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:08:52,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable217 [2024-06-28 03:08:52,110 INFO L420 AbstractCegarLoop]: === Iteration 219 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:08:52,110 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:08:52,110 INFO L85 PathProgramCache]: Analyzing trace with hash 234507864, now seen corresponding path program 15 times [2024-06-28 03:08:52,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:08:52,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550404981] [2024-06-28 03:08:52,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:08:52,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:08:52,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:08:53,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:08:53,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:08:53,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550404981] [2024-06-28 03:08:53,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550404981] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:08:53,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:08:53,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:08:53,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149938759] [2024-06-28 03:08:53,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:08:53,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:08:53,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:08:53,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:08:53,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:08:54,125 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 03:08:54,125 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 641 places, 691 transitions, 10283 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:08:54,125 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:08:54,126 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 03:08:54,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:08:55,121 INFO L124 PetriNetUnfolderBase]: 1405/2657 cut-off events. [2024-06-28 03:08:55,121 INFO L125 PetriNetUnfolderBase]: For 1046459/1046459 co-relation queries the response was YES. [2024-06-28 03:08:55,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27601 conditions, 2657 events. 1405/2657 cut-off events. For 1046459/1046459 co-relation queries the response was YES. Maximal size of possible extension queue 327. Compared 18115 event pairs, 100 based on Foata normal form. 2/2657 useless extension candidates. Maximal degree in co-relation 27309. Up to 1961 conditions per place. [2024-06-28 03:08:55,174 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 506 selfloop transitions, 198 changer transitions 0/707 dead transitions. [2024-06-28 03:08:55,175 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 652 places, 707 transitions, 11777 flow [2024-06-28 03:08:55,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:08:55,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:08:55,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 155 transitions. [2024-06-28 03:08:55,175 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4036458333333333 [2024-06-28 03:08:55,175 INFO L175 Difference]: Start difference. First operand has 641 places, 691 transitions, 10283 flow. Second operand 12 states and 155 transitions. [2024-06-28 03:08:55,175 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 652 places, 707 transitions, 11777 flow [2024-06-28 03:09:01,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 643 places, 707 transitions, 11418 flow, removed 21 selfloop flow, removed 9 redundant places. [2024-06-28 03:09:01,543 INFO L231 Difference]: Finished difference. Result has 644 places, 692 transitions, 10378 flow [2024-06-28 03:09:01,543 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=9924, PETRI_DIFFERENCE_MINUEND_PLACES=632, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=691, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=197, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=493, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=10378, PETRI_PLACES=644, PETRI_TRANSITIONS=692} [2024-06-28 03:09:01,543 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 613 predicate places. [2024-06-28 03:09:01,543 INFO L495 AbstractCegarLoop]: Abstraction has has 644 places, 692 transitions, 10378 flow [2024-06-28 03:09:01,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:09:01,543 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:09:01,544 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:09:01,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable218 [2024-06-28 03:09:01,544 INFO L420 AbstractCegarLoop]: === Iteration 220 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:09:01,544 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:09:01,544 INFO L85 PathProgramCache]: Analyzing trace with hash 1687731917, now seen corresponding path program 16 times [2024-06-28 03:09:01,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:09:01,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821663071] [2024-06-28 03:09:01,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:09:01,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:09:01,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:09:02,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:09:02,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:09:02,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821663071] [2024-06-28 03:09:02,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821663071] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:09:02,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:09:02,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:09:02,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804798308] [2024-06-28 03:09:02,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:09:02,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:09:02,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:09:02,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:09:02,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:09:02,974 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 03:09:02,974 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 644 places, 692 transitions, 10378 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:09:02,974 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:09:02,974 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 03:09:02,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:09:04,193 INFO L124 PetriNetUnfolderBase]: 1427/2698 cut-off events. [2024-06-28 03:09:04,193 INFO L125 PetriNetUnfolderBase]: For 1148357/1148357 co-relation queries the response was YES. [2024-06-28 03:09:04,237 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28786 conditions, 2698 events. 1427/2698 cut-off events. For 1148357/1148357 co-relation queries the response was YES. Maximal size of possible extension queue 338. Compared 18460 event pairs, 100 based on Foata normal form. 4/2700 useless extension candidates. Maximal degree in co-relation 28493. Up to 2229 conditions per place. [2024-06-28 03:09:04,247 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 601 selfloop transitions, 115 changer transitions 0/719 dead transitions. [2024-06-28 03:09:04,247 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 655 places, 719 transitions, 13274 flow [2024-06-28 03:09:04,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:09:04,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:09:04,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 158 transitions. [2024-06-28 03:09:04,248 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4114583333333333 [2024-06-28 03:09:04,248 INFO L175 Difference]: Start difference. First operand has 644 places, 692 transitions, 10378 flow. Second operand 12 states and 158 transitions. [2024-06-28 03:09:04,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 655 places, 719 transitions, 13274 flow [2024-06-28 03:09:11,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 646 places, 719 transitions, 12820 flow, removed 29 selfloop flow, removed 9 redundant places. [2024-06-28 03:09:11,759 INFO L231 Difference]: Finished difference. Result has 648 places, 704 transitions, 10744 flow [2024-06-28 03:09:11,759 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=9924, PETRI_DIFFERENCE_MINUEND_PLACES=635, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=692, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=589, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=10744, PETRI_PLACES=648, PETRI_TRANSITIONS=704} [2024-06-28 03:09:11,759 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 617 predicate places. [2024-06-28 03:09:11,759 INFO L495 AbstractCegarLoop]: Abstraction has has 648 places, 704 transitions, 10744 flow [2024-06-28 03:09:11,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:09:11,759 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:09:11,759 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:09:11,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable219 [2024-06-28 03:09:11,760 INFO L420 AbstractCegarLoop]: === Iteration 221 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:09:11,760 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:09:11,760 INFO L85 PathProgramCache]: Analyzing trace with hash 1687739636, now seen corresponding path program 16 times [2024-06-28 03:09:11,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:09:11,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883462738] [2024-06-28 03:09:11,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:09:11,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:09:11,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:09:13,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:09:13,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:09:13,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883462738] [2024-06-28 03:09:13,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883462738] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:09:13,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:09:13,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:09:13,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574360782] [2024-06-28 03:09:13,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:09:13,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:09:13,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:09:13,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:09:13,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:09:13,311 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 03:09:13,311 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 648 places, 704 transitions, 10744 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:09:13,311 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:09:13,311 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 03:09:13,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:09:14,380 INFO L124 PetriNetUnfolderBase]: 1431/2708 cut-off events. [2024-06-28 03:09:14,380 INFO L125 PetriNetUnfolderBase]: For 1123654/1123654 co-relation queries the response was YES. [2024-06-28 03:09:14,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28667 conditions, 2708 events. 1431/2708 cut-off events. For 1123654/1123654 co-relation queries the response was YES. Maximal size of possible extension queue 338. Compared 18533 event pairs, 102 based on Foata normal form. 2/2708 useless extension candidates. Maximal degree in co-relation 28373. Up to 2349 conditions per place. [2024-06-28 03:09:14,436 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 642 selfloop transitions, 74 changer transitions 0/719 dead transitions. [2024-06-28 03:09:14,436 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 659 places, 719 transitions, 12262 flow [2024-06-28 03:09:14,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:09:14,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:09:14,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 149 transitions. [2024-06-28 03:09:14,437 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3880208333333333 [2024-06-28 03:09:14,437 INFO L175 Difference]: Start difference. First operand has 648 places, 704 transitions, 10744 flow. Second operand 12 states and 149 transitions. [2024-06-28 03:09:14,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 659 places, 719 transitions, 12262 flow [2024-06-28 03:09:22,716 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 647 places, 719 transitions, 11230 flow, removed 173 selfloop flow, removed 12 redundant places. [2024-06-28 03:09:22,724 INFO L231 Difference]: Finished difference. Result has 648 places, 705 transitions, 9921 flow [2024-06-28 03:09:22,724 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=9712, PETRI_DIFFERENCE_MINUEND_PLACES=636, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=704, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=630, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9921, PETRI_PLACES=648, PETRI_TRANSITIONS=705} [2024-06-28 03:09:22,724 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 617 predicate places. [2024-06-28 03:09:22,724 INFO L495 AbstractCegarLoop]: Abstraction has has 648 places, 705 transitions, 9921 flow [2024-06-28 03:09:22,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:09:22,725 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:09:22,725 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:09:22,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable220 [2024-06-28 03:09:22,725 INFO L420 AbstractCegarLoop]: === Iteration 222 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:09:22,725 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:09:22,725 INFO L85 PathProgramCache]: Analyzing trace with hash 1695148946, now seen corresponding path program 17 times [2024-06-28 03:09:22,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:09:22,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629208209] [2024-06-28 03:09:22,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:09:22,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:09:22,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:09:23,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:09:23,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:09:23,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629208209] [2024-06-28 03:09:23,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629208209] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:09:23,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:09:23,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:09:23,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499605375] [2024-06-28 03:09:23,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:09:23,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:09:23,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:09:23,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:09:23,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:09:24,111 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 03:09:24,111 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 648 places, 705 transitions, 9921 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:09:24,111 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:09:24,111 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 03:09:24,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:09:25,154 INFO L124 PetriNetUnfolderBase]: 1435/2715 cut-off events. [2024-06-28 03:09:25,154 INFO L125 PetriNetUnfolderBase]: For 1114949/1114949 co-relation queries the response was YES. [2024-06-28 03:09:25,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27948 conditions, 2715 events. 1435/2715 cut-off events. For 1114949/1114949 co-relation queries the response was YES. Maximal size of possible extension queue 340. Compared 18572 event pairs, 104 based on Foata normal form. 2/2715 useless extension candidates. Maximal degree in co-relation 27656. Up to 2303 conditions per place. [2024-06-28 03:09:25,210 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 633 selfloop transitions, 83 changer transitions 0/719 dead transitions. [2024-06-28 03:09:25,210 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 658 places, 719 transitions, 11439 flow [2024-06-28 03:09:25,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:09:25,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:09:25,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 141 transitions. [2024-06-28 03:09:25,211 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4005681818181818 [2024-06-28 03:09:25,211 INFO L175 Difference]: Start difference. First operand has 648 places, 705 transitions, 9921 flow. Second operand 11 states and 141 transitions. [2024-06-28 03:09:25,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 658 places, 719 transitions, 11439 flow [2024-06-28 03:09:32,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 645 places, 719 transitions, 11198 flow, removed 25 selfloop flow, removed 13 redundant places. [2024-06-28 03:09:32,486 INFO L231 Difference]: Finished difference. Result has 646 places, 706 transitions, 9911 flow [2024-06-28 03:09:32,486 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=9680, PETRI_DIFFERENCE_MINUEND_PLACES=635, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=705, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=622, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9911, PETRI_PLACES=646, PETRI_TRANSITIONS=706} [2024-06-28 03:09:32,486 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 615 predicate places. [2024-06-28 03:09:32,486 INFO L495 AbstractCegarLoop]: Abstraction has has 646 places, 706 transitions, 9911 flow [2024-06-28 03:09:32,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:09:32,486 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:09:32,486 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:09:32,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable221 [2024-06-28 03:09:32,487 INFO L420 AbstractCegarLoop]: === Iteration 223 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:09:32,487 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:09:32,487 INFO L85 PathProgramCache]: Analyzing trace with hash 1695158246, now seen corresponding path program 18 times [2024-06-28 03:09:32,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:09:32,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236488509] [2024-06-28 03:09:32,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:09:32,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:09:32,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:09:33,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:09:33,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:09:33,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236488509] [2024-06-28 03:09:33,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236488509] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:09:33,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:09:33,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:09:33,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379496352] [2024-06-28 03:09:33,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:09:33,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:09:33,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:09:33,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:09:33,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:09:33,871 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 03:09:33,872 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 646 places, 706 transitions, 9911 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:09:33,872 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:09:33,872 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 03:09:33,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:09:34,863 INFO L124 PetriNetUnfolderBase]: 1432/2708 cut-off events. [2024-06-28 03:09:34,863 INFO L125 PetriNetUnfolderBase]: For 1076354/1076354 co-relation queries the response was YES. [2024-06-28 03:09:34,908 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27390 conditions, 2708 events. 1432/2708 cut-off events. For 1076354/1076354 co-relation queries the response was YES. Maximal size of possible extension queue 340. Compared 18553 event pairs, 101 based on Foata normal form. 2/2708 useless extension candidates. Maximal degree in co-relation 27097. Up to 2266 conditions per place. [2024-06-28 03:09:34,917 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 632 selfloop transitions, 85 changer transitions 0/720 dead transitions. [2024-06-28 03:09:34,917 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 656 places, 720 transitions, 11377 flow [2024-06-28 03:09:34,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:09:34,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:09:34,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 141 transitions. [2024-06-28 03:09:34,918 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4005681818181818 [2024-06-28 03:09:34,918 INFO L175 Difference]: Start difference. First operand has 646 places, 706 transitions, 9911 flow. Second operand 11 states and 141 transitions. [2024-06-28 03:09:34,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 656 places, 720 transitions, 11377 flow [2024-06-28 03:09:42,394 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 647 places, 720 transitions, 11164 flow, removed 26 selfloop flow, removed 9 redundant places. [2024-06-28 03:09:42,402 INFO L231 Difference]: Finished difference. Result has 648 places, 706 transitions, 9872 flow [2024-06-28 03:09:42,402 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=9698, PETRI_DIFFERENCE_MINUEND_PLACES=637, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=706, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=621, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9872, PETRI_PLACES=648, PETRI_TRANSITIONS=706} [2024-06-28 03:09:42,402 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 617 predicate places. [2024-06-28 03:09:42,402 INFO L495 AbstractCegarLoop]: Abstraction has has 648 places, 706 transitions, 9872 flow [2024-06-28 03:09:42,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:09:42,402 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:09:42,402 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:09:42,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable222 [2024-06-28 03:09:42,403 INFO L420 AbstractCegarLoop]: === Iteration 224 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:09:42,403 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:09:42,403 INFO L85 PathProgramCache]: Analyzing trace with hash 1694881757, now seen corresponding path program 17 times [2024-06-28 03:09:42,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:09:42,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080544839] [2024-06-28 03:09:42,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:09:42,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:09:42,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:09:44,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:09:44,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:09:44,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080544839] [2024-06-28 03:09:44,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080544839] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:09:44,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:09:44,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:09:44,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567148899] [2024-06-28 03:09:44,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:09:44,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:09:44,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:09:44,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:09:44,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:09:44,270 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 03:09:44,270 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 648 places, 706 transitions, 9872 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:09:44,270 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:09:44,271 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 03:09:44,271 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:09:45,393 INFO L124 PetriNetUnfolderBase]: 1438/2722 cut-off events. [2024-06-28 03:09:45,393 INFO L125 PetriNetUnfolderBase]: For 1086386/1086386 co-relation queries the response was YES. [2024-06-28 03:09:45,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27522 conditions, 2722 events. 1438/2722 cut-off events. For 1086386/1086386 co-relation queries the response was YES. Maximal size of possible extension queue 344. Compared 18691 event pairs, 103 based on Foata normal form. 2/2722 useless extension candidates. Maximal degree in co-relation 27228. Up to 2302 conditions per place. [2024-06-28 03:09:45,450 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 619 selfloop transitions, 101 changer transitions 0/723 dead transitions. [2024-06-28 03:09:45,450 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 659 places, 723 transitions, 11500 flow [2024-06-28 03:09:45,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:09:45,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:09:45,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 150 transitions. [2024-06-28 03:09:45,450 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-28 03:09:45,451 INFO L175 Difference]: Start difference. First operand has 648 places, 706 transitions, 9872 flow. Second operand 12 states and 150 transitions. [2024-06-28 03:09:45,451 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 659 places, 723 transitions, 11500 flow [2024-06-28 03:09:52,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 647 places, 723 transitions, 11040 flow, removed 27 selfloop flow, removed 12 redundant places. [2024-06-28 03:09:52,808 INFO L231 Difference]: Finished difference. Result has 648 places, 710 transitions, 9788 flow [2024-06-28 03:09:52,809 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=9412, PETRI_DIFFERENCE_MINUEND_PLACES=636, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=706, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=605, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9788, PETRI_PLACES=648, PETRI_TRANSITIONS=710} [2024-06-28 03:09:52,809 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 617 predicate places. [2024-06-28 03:09:52,809 INFO L495 AbstractCegarLoop]: Abstraction has has 648 places, 710 transitions, 9788 flow [2024-06-28 03:09:52,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:09:52,809 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:09:52,809 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:09:52,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable223 [2024-06-28 03:09:52,810 INFO L420 AbstractCegarLoop]: === Iteration 225 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:09:52,810 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:09:52,810 INFO L85 PathProgramCache]: Analyzing trace with hash 1687530107, now seen corresponding path program 18 times [2024-06-28 03:09:52,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:09:52,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055797929] [2024-06-28 03:09:52,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:09:52,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:09:52,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:09:54,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:09:54,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:09:54,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055797929] [2024-06-28 03:09:54,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055797929] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:09:54,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:09:54,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:09:54,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031149890] [2024-06-28 03:09:54,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:09:54,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:09:54,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:09:54,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:09:54,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:09:54,433 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 03:09:54,433 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 648 places, 710 transitions, 9788 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:09:54,433 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:09:54,433 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 03:09:54,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:09:55,628 INFO L124 PetriNetUnfolderBase]: 1434/2717 cut-off events. [2024-06-28 03:09:55,628 INFO L125 PetriNetUnfolderBase]: For 1046313/1046313 co-relation queries the response was YES. [2024-06-28 03:09:55,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26403 conditions, 2717 events. 1434/2717 cut-off events. For 1046313/1046313 co-relation queries the response was YES. Maximal size of possible extension queue 343. Compared 18639 event pairs, 103 based on Foata normal form. 2/2717 useless extension candidates. Maximal degree in co-relation 26110. Up to 2244 conditions per place. [2024-06-28 03:09:55,681 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 595 selfloop transitions, 126 changer transitions 0/724 dead transitions. [2024-06-28 03:09:55,682 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 659 places, 724 transitions, 11702 flow [2024-06-28 03:09:55,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:09:55,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:09:55,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 155 transitions. [2024-06-28 03:09:55,682 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4036458333333333 [2024-06-28 03:09:55,682 INFO L175 Difference]: Start difference. First operand has 648 places, 710 transitions, 9788 flow. Second operand 12 states and 155 transitions. [2024-06-28 03:09:55,682 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 659 places, 724 transitions, 11702 flow [2024-06-28 03:10:03,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 649 places, 724 transitions, 11282 flow, removed 112 selfloop flow, removed 10 redundant places. [2024-06-28 03:10:03,242 INFO L231 Difference]: Finished difference. Result has 650 places, 710 transitions, 9628 flow [2024-06-28 03:10:03,243 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=9368, PETRI_DIFFERENCE_MINUEND_PLACES=638, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=710, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=584, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9628, PETRI_PLACES=650, PETRI_TRANSITIONS=710} [2024-06-28 03:10:03,243 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 619 predicate places. [2024-06-28 03:10:03,243 INFO L495 AbstractCegarLoop]: Abstraction has has 650 places, 710 transitions, 9628 flow [2024-06-28 03:10:03,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:10:03,243 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:10:03,243 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:10:03,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable224 [2024-06-28 03:10:03,243 INFO L420 AbstractCegarLoop]: === Iteration 226 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:10:03,244 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:10:03,244 INFO L85 PathProgramCache]: Analyzing trace with hash -2047067479, now seen corresponding path program 19 times [2024-06-28 03:10:03,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:10:03,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23876077] [2024-06-28 03:10:03,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:10:03,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:10:03,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:10:04,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:10:04,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:10:04,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23876077] [2024-06-28 03:10:04,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23876077] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:10:04,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:10:04,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:10:04,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560374988] [2024-06-28 03:10:04,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:10:04,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:10:04,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:10:04,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:10:04,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:10:04,811 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 03:10:04,811 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 650 places, 710 transitions, 9628 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:10:04,811 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:10:04,811 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 03:10:04,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:10:05,923 INFO L124 PetriNetUnfolderBase]: 1440/2730 cut-off events. [2024-06-28 03:10:05,923 INFO L125 PetriNetUnfolderBase]: For 1055156/1055156 co-relation queries the response was YES. [2024-06-28 03:10:05,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26482 conditions, 2730 events. 1440/2730 cut-off events. For 1055156/1055156 co-relation queries the response was YES. Maximal size of possible extension queue 346. Compared 18764 event pairs, 103 based on Foata normal form. 2/2730 useless extension candidates. Maximal degree in co-relation 26188. Up to 2226 conditions per place. [2024-06-28 03:10:05,979 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 582 selfloop transitions, 143 changer transitions 0/728 dead transitions. [2024-06-28 03:10:05,980 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 661 places, 728 transitions, 11726 flow [2024-06-28 03:10:05,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:10:05,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:10:05,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 153 transitions. [2024-06-28 03:10:05,980 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3984375 [2024-06-28 03:10:05,980 INFO L175 Difference]: Start difference. First operand has 650 places, 710 transitions, 9628 flow. Second operand 12 states and 153 transitions. [2024-06-28 03:10:05,980 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 661 places, 728 transitions, 11726 flow [2024-06-28 03:10:13,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 651 places, 728 transitions, 11457 flow, removed 16 selfloop flow, removed 10 redundant places. [2024-06-28 03:10:13,213 INFO L231 Difference]: Finished difference. Result has 652 places, 714 transitions, 9826 flow [2024-06-28 03:10:13,213 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=9371, PETRI_DIFFERENCE_MINUEND_PLACES=640, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=710, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=139, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=571, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9826, PETRI_PLACES=652, PETRI_TRANSITIONS=714} [2024-06-28 03:10:13,213 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 621 predicate places. [2024-06-28 03:10:13,213 INFO L495 AbstractCegarLoop]: Abstraction has has 652 places, 714 transitions, 9826 flow [2024-06-28 03:10:13,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:10:13,213 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:10:13,213 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:10:13,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable225 [2024-06-28 03:10:13,213 INFO L420 AbstractCegarLoop]: === Iteration 227 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:10:13,214 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:10:13,214 INFO L85 PathProgramCache]: Analyzing trace with hash 1694889197, now seen corresponding path program 20 times [2024-06-28 03:10:13,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:10:13,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952048762] [2024-06-28 03:10:13,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:10:13,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:10:13,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:10:15,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:10:15,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:10:15,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952048762] [2024-06-28 03:10:15,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952048762] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:10:15,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:10:15,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:10:15,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219634616] [2024-06-28 03:10:15,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:10:15,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:10:15,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:10:15,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:10:15,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:10:15,203 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 03:10:15,203 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 652 places, 714 transitions, 9826 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:10:15,203 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:10:15,203 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 03:10:15,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:10:16,382 INFO L124 PetriNetUnfolderBase]: 1436/2724 cut-off events. [2024-06-28 03:10:16,382 INFO L125 PetriNetUnfolderBase]: For 1015430/1015430 co-relation queries the response was YES. [2024-06-28 03:10:16,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26000 conditions, 2724 events. 1436/2724 cut-off events. For 1015430/1015430 co-relation queries the response was YES. Maximal size of possible extension queue 346. Compared 18745 event pairs, 103 based on Foata normal form. 2/2724 useless extension candidates. Maximal degree in co-relation 25705. Up to 2288 conditions per place. [2024-06-28 03:10:16,438 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 617 selfloop transitions, 108 changer transitions 0/728 dead transitions. [2024-06-28 03:10:16,438 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 664 places, 728 transitions, 11308 flow [2024-06-28 03:10:16,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 03:10:16,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 03:10:16,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 161 transitions. [2024-06-28 03:10:16,438 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870192307692308 [2024-06-28 03:10:16,438 INFO L175 Difference]: Start difference. First operand has 652 places, 714 transitions, 9826 flow. Second operand 13 states and 161 transitions. [2024-06-28 03:10:16,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 664 places, 728 transitions, 11308 flow [2024-06-28 03:10:23,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 654 places, 728 transitions, 10645 flow, removed 124 selfloop flow, removed 10 redundant places. [2024-06-28 03:10:23,043 INFO L231 Difference]: Finished difference. Result has 655 places, 714 transitions, 9386 flow [2024-06-28 03:10:23,043 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=9163, PETRI_DIFFERENCE_MINUEND_PLACES=642, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=714, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=606, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=9386, PETRI_PLACES=655, PETRI_TRANSITIONS=714} [2024-06-28 03:10:23,043 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 624 predicate places. [2024-06-28 03:10:23,044 INFO L495 AbstractCegarLoop]: Abstraction has has 655 places, 714 transitions, 9386 flow [2024-06-28 03:10:23,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:10:23,044 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:10:23,044 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:10:23,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable226 [2024-06-28 03:10:23,044 INFO L420 AbstractCegarLoop]: === Iteration 228 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:10:23,044 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:10:23,045 INFO L85 PathProgramCache]: Analyzing trace with hash -317195219, now seen corresponding path program 16 times [2024-06-28 03:10:23,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:10:23,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209994486] [2024-06-28 03:10:23,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:10:23,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:10:23,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:10:24,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:10:24,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:10:24,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209994486] [2024-06-28 03:10:24,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209994486] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:10:24,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:10:24,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:10:24,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070888893] [2024-06-28 03:10:24,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:10:24,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:10:24,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:10:24,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:10:24,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:10:24,379 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 03:10:24,379 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 655 places, 714 transitions, 9386 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:10:24,379 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:10:24,379 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 03:10:24,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:10:25,359 INFO L124 PetriNetUnfolderBase]: 1440/2733 cut-off events. [2024-06-28 03:10:25,359 INFO L125 PetriNetUnfolderBase]: For 1022430/1022430 co-relation queries the response was YES. [2024-06-28 03:10:25,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25863 conditions, 2733 events. 1440/2733 cut-off events. For 1022430/1022430 co-relation queries the response was YES. Maximal size of possible extension queue 347. Compared 18842 event pairs, 112 based on Foata normal form. 2/2730 useless extension candidates. Maximal degree in co-relation 25567. Up to 2237 conditions per place. [2024-06-28 03:10:25,416 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 603 selfloop transitions, 120 changer transitions 0/726 dead transitions. [2024-06-28 03:10:25,417 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 665 places, 726 transitions, 10932 flow [2024-06-28 03:10:25,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:10:25,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:10:25,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-28 03:10:25,417 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38636363636363635 [2024-06-28 03:10:25,417 INFO L175 Difference]: Start difference. First operand has 655 places, 714 transitions, 9386 flow. Second operand 11 states and 136 transitions. [2024-06-28 03:10:25,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 665 places, 726 transitions, 10932 flow [2024-06-28 03:10:32,619 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 652 places, 726 transitions, 10667 flow, removed 0 selfloop flow, removed 13 redundant places. [2024-06-28 03:10:32,626 INFO L231 Difference]: Finished difference. Result has 653 places, 715 transitions, 9443 flow [2024-06-28 03:10:32,626 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=9121, PETRI_DIFFERENCE_MINUEND_PLACES=642, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=714, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=594, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9443, PETRI_PLACES=653, PETRI_TRANSITIONS=715} [2024-06-28 03:10:32,627 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 622 predicate places. [2024-06-28 03:10:32,627 INFO L495 AbstractCegarLoop]: Abstraction has has 653 places, 715 transitions, 9443 flow [2024-06-28 03:10:32,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:10:32,627 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:10:32,627 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:10:32,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable227 [2024-06-28 03:10:32,627 INFO L420 AbstractCegarLoop]: === Iteration 229 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:10:32,627 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:10:32,627 INFO L85 PathProgramCache]: Analyzing trace with hash -52462450, now seen corresponding path program 19 times [2024-06-28 03:10:32,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:10:32,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967990584] [2024-06-28 03:10:32,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:10:32,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:10:32,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:10:34,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:10:34,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:10:34,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967990584] [2024-06-28 03:10:34,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967990584] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:10:34,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:10:34,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:10:34,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890747940] [2024-06-28 03:10:34,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:10:34,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:10:34,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:10:34,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:10:34,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:10:34,275 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 03:10:34,275 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 653 places, 715 transitions, 9443 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:10:34,276 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:10:34,276 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 03:10:34,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:10:35,558 INFO L124 PetriNetUnfolderBase]: 1464/2778 cut-off events. [2024-06-28 03:10:35,559 INFO L125 PetriNetUnfolderBase]: For 1083789/1083789 co-relation queries the response was YES. [2024-06-28 03:10:35,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26731 conditions, 2778 events. 1464/2778 cut-off events. For 1083789/1083789 co-relation queries the response was YES. Maximal size of possible extension queue 353. Compared 19217 event pairs, 225 based on Foata normal form. 2/2778 useless extension candidates. Maximal degree in co-relation 26434. Up to 2523 conditions per place. [2024-06-28 03:10:35,612 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 704 selfloop transitions, 31 changer transitions 0/738 dead transitions. [2024-06-28 03:10:35,612 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 664 places, 738 transitions, 11542 flow [2024-06-28 03:10:35,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:10:35,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:10:35,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 144 transitions. [2024-06-28 03:10:35,613 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-28 03:10:35,613 INFO L175 Difference]: Start difference. First operand has 653 places, 715 transitions, 9443 flow. Second operand 12 states and 144 transitions. [2024-06-28 03:10:35,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 664 places, 738 transitions, 11542 flow [2024-06-28 03:10:43,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 655 places, 738 transitions, 11230 flow, removed 37 selfloop flow, removed 9 redundant places. [2024-06-28 03:10:43,288 INFO L231 Difference]: Finished difference. Result has 657 places, 723 transitions, 9349 flow [2024-06-28 03:10:43,288 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=9131, PETRI_DIFFERENCE_MINUEND_PLACES=644, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=715, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=690, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9349, PETRI_PLACES=657, PETRI_TRANSITIONS=723} [2024-06-28 03:10:43,288 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 626 predicate places. [2024-06-28 03:10:43,288 INFO L495 AbstractCegarLoop]: Abstraction has has 657 places, 723 transitions, 9349 flow [2024-06-28 03:10:43,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:10:43,288 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:10:43,289 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:10:43,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable228 [2024-06-28 03:10:43,289 INFO L420 AbstractCegarLoop]: === Iteration 230 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:10:43,289 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:10:43,289 INFO L85 PathProgramCache]: Analyzing trace with hash 765966852, now seen corresponding path program 20 times [2024-06-28 03:10:43,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:10:43,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96282678] [2024-06-28 03:10:43,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:10:43,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:10:43,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:10:44,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:10:44,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:10:44,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96282678] [2024-06-28 03:10:44,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96282678] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:10:44,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:10:44,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:10:44,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470780136] [2024-06-28 03:10:44,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:10:44,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:10:44,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:10:44,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:10:44,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:10:44,534 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-28 03:10:44,534 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 657 places, 723 transitions, 9349 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:10:44,534 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:10:44,534 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-28 03:10:44,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:10:45,495 INFO L124 PetriNetUnfolderBase]: 1465/2779 cut-off events. [2024-06-28 03:10:45,495 INFO L125 PetriNetUnfolderBase]: For 1091282/1091282 co-relation queries the response was YES. [2024-06-28 03:10:45,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26049 conditions, 2779 events. 1465/2779 cut-off events. For 1091282/1091282 co-relation queries the response was YES. Maximal size of possible extension queue 354. Compared 19217 event pairs, 226 based on Foata normal form. 4/2781 useless extension candidates. Maximal degree in co-relation 25750. Up to 2535 conditions per place. [2024-06-28 03:10:45,553 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 700 selfloop transitions, 32 changer transitions 0/735 dead transitions. [2024-06-28 03:10:45,553 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 667 places, 735 transitions, 10887 flow [2024-06-28 03:10:45,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:10:45,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:10:45,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-28 03:10:45,554 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3664772727272727 [2024-06-28 03:10:45,554 INFO L175 Difference]: Start difference. First operand has 657 places, 723 transitions, 9349 flow. Second operand 11 states and 129 transitions. [2024-06-28 03:10:45,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 667 places, 735 transitions, 10887 flow Killed by 15