./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/bench-exp3x3.wvr.c --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-02-07_10-47-16.files/SV-COMP24_unreach-call/bench-exp3x3.wvr.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 958ec4d9 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/weaver/bench-exp3x3.wvr.c ./goblint.2024-02-07_10-47-16.files/SV-COMP24_unreach-call/bench-exp3x3.wvr.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 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-958ec4d-m [2024-02-07 14:28:58,401 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-02-07 14:28:58,462 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-02-07 14:28:58,467 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-02-07 14:28:58,467 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-02-07 14:28:58,493 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-02-07 14:28:58,494 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-02-07 14:28:58,494 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-02-07 14:28:58,494 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-02-07 14:28:58,497 INFO L153 SettingsManager]: * Use memory slicer=true [2024-02-07 14:28:58,498 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-02-07 14:28:58,498 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-02-07 14:28:58,499 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-02-07 14:28:58,499 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-02-07 14:28:58,500 INFO L153 SettingsManager]: * Use SBE=true [2024-02-07 14:28:58,500 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-02-07 14:28:58,500 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-02-07 14:28:58,500 INFO L153 SettingsManager]: * sizeof long=4 [2024-02-07 14:28:58,501 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-02-07 14:28:58,501 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-02-07 14:28:58,501 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-02-07 14:28:58,501 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-02-07 14:28:58,501 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-02-07 14:28:58,502 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-02-07 14:28:58,502 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-02-07 14:28:58,502 INFO L153 SettingsManager]: * sizeof long double=12 [2024-02-07 14:28:58,502 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-02-07 14:28:58,502 INFO L153 SettingsManager]: * Use constant arrays=true [2024-02-07 14:28:58,503 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-02-07 14:28:58,503 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-02-07 14:28:58,504 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-02-07 14:28:58,504 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-02-07 14:28:58,504 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-07 14:28:58,504 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-02-07 14:28:58,505 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-02-07 14:28:58,505 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-02-07 14:28:58,505 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-02-07 14:28:58,505 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-02-07 14:28:58,505 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-02-07 14:28:58,505 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-02-07 14:28:58,506 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-02-07 14:28:58,506 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-02-07 14:28:58,506 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-02-07 14:28:58,506 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-02-07 14:28:58,707 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-02-07 14:28:58,729 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-02-07 14:28:58,731 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-02-07 14:28:58,732 INFO L270 PluginConnector]: Initializing CDTParser... [2024-02-07 14:28:58,732 INFO L274 PluginConnector]: CDTParser initialized [2024-02-07 14:28:58,733 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/bench-exp3x3.wvr.c [2024-02-07 14:28:59,843 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-02-07 14:28:59,978 INFO L384 CDTParser]: Found 1 translation units. [2024-02-07 14:28:59,979 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/bench-exp3x3.wvr.c [2024-02-07 14:28:59,986 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/72b023a49/762893b021a94208ba319c65e550df84/FLAGa69ac4311 [2024-02-07 14:28:59,999 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/72b023a49/762893b021a94208ba319c65e550df84 [2024-02-07 14:29:00,001 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-02-07 14:29:00,002 INFO L274 PluginConnector]: Witness Parser initialized [2024-02-07 14:29:00,002 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-02-07_10-47-16.files/SV-COMP24_unreach-call/bench-exp3x3.wvr.yml/witness.yml [2024-02-07 14:29:00,062 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-02-07 14:29:00,063 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-02-07 14:29:00,064 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-02-07 14:29:00,064 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-02-07 14:29:00,068 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-02-07 14:29:00,068 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 02:28:59" (1/2) ... [2024-02-07 14:29:00,069 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7af3f9d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:29:00, skipping insertion in model container [2024-02-07 14:29:00,069 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 02:28:59" (1/2) ... [2024-02-07 14:29:00,071 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1933c11c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:29:00, skipping insertion in model container [2024-02-07 14:29:00,071 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 02:29:00" (2/2) ... [2024-02-07 14:29:00,072 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7af3f9d8 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:29:00, skipping insertion in model container [2024-02-07 14:29:00,072 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 02:29:00" (2/2) ... [2024-02-07 14:29:00,072 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-02-07 14:29:00,089 INFO L74 edCorrectnessWitness]: Found the following entries in the witness: [2024-02-07 14:29:00,091 INFO L76 edCorrectnessWitness]: Location invariant before [L89-L89] ((((0LL - (long long )n) + (long long )x1 >= 0LL) && ((long long )n + (long long )x1 >= 0LL)) && ((0LL - (long long )n) - (long long )x1 >= 0LL)) && ((long long )n - (long long )x1 >= 0LL) [2024-02-07 14:29:00,109 INFO L178 MainTranslator]: Built tables and reachable declarations [2024-02-07 14:29:00,260 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/bench-exp3x3.wvr.c[2703,2716] [2024-02-07 14:29:00,264 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-02-07 14:29:00,274 INFO L203 MainTranslator]: Completed pre-run Start Parsing Local [2024-02-07 14:29:00,320 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/bench-exp3x3.wvr.c[2703,2716] [2024-02-07 14:29:00,322 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-02-07 14:29:00,333 INFO L207 MainTranslator]: Completed translation [2024-02-07 14:29:00,334 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:29:00 WrapperNode [2024-02-07 14:29:00,334 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-02-07 14:29:00,335 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-02-07 14:29:00,335 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-02-07 14:29:00,335 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-02-07 14:29:00,340 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 07.02 02:29:00" (1/1) ... [2024-02-07 14:29:00,352 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 07.02 02:29:00" (1/1) ... [2024-02-07 14:29:00,371 INFO L138 Inliner]: procedures = 22, calls = 44, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 132 [2024-02-07 14:29:00,371 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-02-07 14:29:00,372 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-02-07 14:29:00,372 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-02-07 14:29:00,372 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-02-07 14:29:00,380 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:29:00" (1/1) ... [2024-02-07 14:29:00,380 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:29:00" (1/1) ... [2024-02-07 14:29:00,383 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:29:00" (1/1) ... [2024-02-07 14:29:00,401 INFO L175 MemorySlicer]: Split 14 memory accesses to 7 slices as follows [2, 2, 2, 2, 2, 2, 2]. 14 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0, 0, 0]. The 6 writes are split as follows [0, 1, 1, 1, 1, 1, 1]. [2024-02-07 14:29:00,401 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:29:00" (1/1) ... [2024-02-07 14:29:00,401 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:29:00" (1/1) ... [2024-02-07 14:29:00,407 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:29:00" (1/1) ... [2024-02-07 14:29:00,410 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:29:00" (1/1) ... [2024-02-07 14:29:00,411 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:29:00" (1/1) ... [2024-02-07 14:29:00,412 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:29:00" (1/1) ... [2024-02-07 14:29:00,418 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-02-07 14:29:00,425 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-02-07 14:29:00,425 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-02-07 14:29:00,425 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-02-07 14:29:00,426 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:29:00" (1/1) ... [2024-02-07 14:29:00,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-07 14:29:00,436 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-07 14:29:00,447 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) [2024-02-07 14:29:00,452 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 [2024-02-07 14:29:00,474 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-02-07 14:29:00,475 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-02-07 14:29:00,475 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-02-07 14:29:00,475 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-02-07 14:29:00,475 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-02-07 14:29:00,475 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-02-07 14:29:00,475 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-02-07 14:29:00,476 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-02-07 14:29:00,476 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-02-07 14:29:00,476 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-02-07 14:29:00,476 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-02-07 14:29:00,476 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-02-07 14:29:00,476 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-02-07 14:29:00,476 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-02-07 14:29:00,476 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-02-07 14:29:00,477 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-02-07 14:29:00,477 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2024-02-07 14:29:00,477 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2024-02-07 14:29:00,477 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2024-02-07 14:29:00,477 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2024-02-07 14:29:00,477 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-02-07 14:29:00,477 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-02-07 14:29:00,478 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-02-07 14:29:00,478 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-02-07 14:29:00,478 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-02-07 14:29:00,478 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-02-07 14:29:00,478 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-02-07 14:29:00,478 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-02-07 14:29:00,478 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-02-07 14:29:00,478 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-02-07 14:29:00,479 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-02-07 14:29:00,479 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-02-07 14:29:00,479 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-02-07 14:29:00,479 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-02-07 14:29:00,479 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-02-07 14:29:00,479 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-02-07 14:29:00,479 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-02-07 14:29:00,479 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-02-07 14:29:00,481 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-02-07 14:29:00,589 INFO L244 CfgBuilder]: Building ICFG [2024-02-07 14:29:00,591 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-02-07 14:29:00,804 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-02-07 14:29:00,804 INFO L293 CfgBuilder]: Performing block encoding [2024-02-07 14:29:00,936 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-02-07 14:29:00,936 INFO L320 CfgBuilder]: Removed 6 assume(true) statements. [2024-02-07 14:29:00,937 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.02 02:29:00 BoogieIcfgContainer [2024-02-07 14:29:00,937 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-02-07 14:29:00,939 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-02-07 14:29:00,939 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-02-07 14:29:00,942 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-02-07 14:29:00,942 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.02 02:28:59" (1/4) ... [2024-02-07 14:29:00,943 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@500d80d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 02:29:00, skipping insertion in model container [2024-02-07 14:29:00,944 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 02:29:00" (2/4) ... [2024-02-07 14:29:00,944 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@500d80d3 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 07.02 02:29:00, skipping insertion in model container [2024-02-07 14:29:00,944 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:29:00" (3/4) ... [2024-02-07 14:29:00,944 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@500d80d3 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 07.02 02:29:00, skipping insertion in model container [2024-02-07 14:29:00,944 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.02 02:29:00" (4/4) ... [2024-02-07 14:29:00,945 INFO L112 eAbstractionObserver]: Analyzing ICFG bench-exp3x3.wvr.c [2024-02-07 14:29:00,958 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-02-07 14:29:00,958 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-02-07 14:29:00,959 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-02-07 14:29:01,020 INFO L144 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2024-02-07 14:29:01,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 66 places, 53 transitions, 148 flow [2024-02-07 14:29:01,087 INFO L124 PetriNetUnfolderBase]: 6/47 cut-off events. [2024-02-07 14:29:01,087 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-02-07 14:29:01,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72 conditions, 47 events. 6/47 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 32 event pairs, 0 based on Foata normal form. 0/39 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2024-02-07 14:29:01,092 INFO L82 GeneralOperation]: Start removeDead. Operand has 66 places, 53 transitions, 148 flow [2024-02-07 14:29:01,095 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 59 places, 46 transitions, 128 flow [2024-02-07 14:29:01,108 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-07 14:29:01,113 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;@4a7d13d0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-07 14:29:01,114 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-02-07 14:29:01,116 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-07 14:29:01,116 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2024-02-07 14:29:01,116 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-07 14:29:01,116 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:29:01,117 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-02-07 14:29:01,118 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2024-02-07 14:29:01,122 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:29:01,122 INFO L85 PathProgramCache]: Analyzing trace with hash 13922, now seen corresponding path program 1 times [2024-02-07 14:29:01,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:29:01,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667467387] [2024-02-07 14:29:01,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:29:01,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:29:01,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:29:01,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:29:01,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:29:01,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667467387] [2024-02-07 14:29:01,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667467387] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:29:01,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:29:01,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-02-07 14:29:01,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118293900] [2024-02-07 14:29:01,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:29:01,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 14:29:01,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:29:01,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 14:29:01,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 14:29:01,504 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 53 [2024-02-07 14:29:01,506 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 46 transitions, 128 flow. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:29:01,506 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:29:01,506 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 53 [2024-02-07 14:29:01,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:29:02,785 INFO L124 PetriNetUnfolderBase]: 16776/19691 cut-off events. [2024-02-07 14:29:02,786 INFO L125 PetriNetUnfolderBase]: For 647/647 co-relation queries the response was YES. [2024-02-07 14:29:02,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40118 conditions, 19691 events. 16776/19691 cut-off events. For 647/647 co-relation queries the response was YES. Maximal size of possible extension queue 620. Compared 68023 event pairs, 8023 based on Foata normal form. 0/10695 useless extension candidates. Maximal degree in co-relation 29529. Up to 19327 conditions per place. [2024-02-07 14:29:02,918 INFO L140 encePairwiseOnDemand]: 50/53 looper letters, 36 selfloop transitions, 2 changer transitions 0/45 dead transitions. [2024-02-07 14:29:02,919 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 45 transitions, 202 flow [2024-02-07 14:29:02,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 14:29:02,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 14:29:02,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 78 transitions. [2024-02-07 14:29:02,930 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49056603773584906 [2024-02-07 14:29:02,931 INFO L175 Difference]: Start difference. First operand has 59 places, 46 transitions, 128 flow. Second operand 3 states and 78 transitions. [2024-02-07 14:29:02,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 45 transitions, 202 flow [2024-02-07 14:29:02,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 45 transitions, 178 flow, removed 0 selfloop flow, removed 12 redundant places. [2024-02-07 14:29:02,986 INFO L231 Difference]: Finished difference. Result has 48 places, 45 transitions, 106 flow [2024-02-07 14:29:02,988 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=106, PETRI_PLACES=48, PETRI_TRANSITIONS=45} [2024-02-07 14:29:02,992 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, -11 predicate places. [2024-02-07 14:29:02,992 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 45 transitions, 106 flow [2024-02-07 14:29:02,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:29:02,993 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:29:02,993 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:29:02,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-02-07 14:29:02,993 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2024-02-07 14:29:02,994 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:29:02,994 INFO L85 PathProgramCache]: Analyzing trace with hash -802080569, now seen corresponding path program 1 times [2024-02-07 14:29:02,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:29:02,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196089887] [2024-02-07 14:29:02,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:29:02,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:29:03,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:29:03,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:29:03,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:29:03,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196089887] [2024-02-07 14:29:03,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196089887] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:29:03,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:29:03,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-07 14:29:03,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475589460] [2024-02-07 14:29:03,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:29:03,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 14:29:03,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:29:03,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 14:29:03,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 14:29:03,434 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 53 [2024-02-07 14:29:03,437 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 45 transitions, 106 flow. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:29:03,437 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:29:03,437 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 53 [2024-02-07 14:29:03,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:29:04,611 INFO L124 PetriNetUnfolderBase]: 21341/24684 cut-off events. [2024-02-07 14:29:04,612 INFO L125 PetriNetUnfolderBase]: For 301/301 co-relation queries the response was YES. [2024-02-07 14:29:04,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49730 conditions, 24684 events. 21341/24684 cut-off events. For 301/301 co-relation queries the response was YES. Maximal size of possible extension queue 722. Compared 79736 event pairs, 1773 based on Foata normal form. 1/13586 useless extension candidates. Maximal degree in co-relation 49721. Up to 23405 conditions per place. [2024-02-07 14:29:04,721 INFO L140 encePairwiseOnDemand]: 45/53 looper letters, 64 selfloop transitions, 7 changer transitions 1/79 dead transitions. [2024-02-07 14:29:04,722 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 79 transitions, 329 flow [2024-02-07 14:29:04,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 14:29:04,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 14:29:04,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 115 transitions. [2024-02-07 14:29:04,732 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7232704402515723 [2024-02-07 14:29:04,733 INFO L175 Difference]: Start difference. First operand has 48 places, 45 transitions, 106 flow. Second operand 3 states and 115 transitions. [2024-02-07 14:29:04,733 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 79 transitions, 329 flow [2024-02-07 14:29:04,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 79 transitions, 325 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-07 14:29:04,735 INFO L231 Difference]: Finished difference. Result has 49 places, 51 transitions, 149 flow [2024-02-07 14:29:04,736 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=149, PETRI_PLACES=49, PETRI_TRANSITIONS=51} [2024-02-07 14:29:04,736 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, -10 predicate places. [2024-02-07 14:29:04,736 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 51 transitions, 149 flow [2024-02-07 14:29:04,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:29:04,737 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:29:04,737 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:29:04,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-02-07 14:29:04,737 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2024-02-07 14:29:04,738 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:29:04,738 INFO L85 PathProgramCache]: Analyzing trace with hash -1805683468, now seen corresponding path program 1 times [2024-02-07 14:29:04,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:29:04,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662439293] [2024-02-07 14:29:04,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:29:04,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:29:04,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:29:04,862 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:29:04,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:29:04,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662439293] [2024-02-07 14:29:04,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662439293] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:29:04,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:29:04,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-07 14:29:04,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218854089] [2024-02-07 14:29:04,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:29:04,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 14:29:04,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:29:04,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 14:29:04,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-07 14:29:04,868 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 53 [2024-02-07 14:29:04,869 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 51 transitions, 149 flow. Second operand has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:29:04,869 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:29:04,869 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 53 [2024-02-07 14:29:04,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:29:06,578 INFO L124 PetriNetUnfolderBase]: 27885/32439 cut-off events. [2024-02-07 14:29:06,579 INFO L125 PetriNetUnfolderBase]: For 7656/7656 co-relation queries the response was YES. [2024-02-07 14:29:06,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80514 conditions, 32439 events. 27885/32439 cut-off events. For 7656/7656 co-relation queries the response was YES. Maximal size of possible extension queue 972. Compared 114074 event pairs, 2675 based on Foata normal form. 294/32673 useless extension candidates. Maximal degree in co-relation 21802. Up to 14314 conditions per place. [2024-02-07 14:29:06,742 INFO L140 encePairwiseOnDemand]: 47/53 looper letters, 116 selfloop transitions, 11 changer transitions 0/134 dead transitions. [2024-02-07 14:29:06,742 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 134 transitions, 639 flow [2024-02-07 14:29:06,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-07 14:29:06,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-07 14:29:06,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 187 transitions. [2024-02-07 14:29:06,744 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7056603773584905 [2024-02-07 14:29:06,744 INFO L175 Difference]: Start difference. First operand has 49 places, 51 transitions, 149 flow. Second operand 5 states and 187 transitions. [2024-02-07 14:29:06,744 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 134 transitions, 639 flow [2024-02-07 14:29:06,754 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 134 transitions, 627 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-02-07 14:29:06,756 INFO L231 Difference]: Finished difference. Result has 54 places, 58 transitions, 211 flow [2024-02-07 14:29:06,756 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=211, PETRI_PLACES=54, PETRI_TRANSITIONS=58} [2024-02-07 14:29:06,756 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, -5 predicate places. [2024-02-07 14:29:06,757 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 58 transitions, 211 flow [2024-02-07 14:29:06,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:29:06,757 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:29:06,757 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:29:06,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-02-07 14:29:06,758 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2024-02-07 14:29:06,758 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:29:06,758 INFO L85 PathProgramCache]: Analyzing trace with hash -268858041, now seen corresponding path program 1 times [2024-02-07 14:29:06,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:29:06,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041755632] [2024-02-07 14:29:06,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:29:06,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:29:06,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:29:06,849 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:29:06,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:29:06,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041755632] [2024-02-07 14:29:06,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041755632] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:29:06,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:29:06,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-07 14:29:06,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866382789] [2024-02-07 14:29:06,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:29:06,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 14:29:06,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:29:06,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 14:29:06,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-07 14:29:06,855 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 53 [2024-02-07 14:29:06,856 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 58 transitions, 211 flow. Second operand has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:29:06,856 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:29:06,856 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 53 [2024-02-07 14:29:06,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:29:08,627 INFO L124 PetriNetUnfolderBase]: 27399/31953 cut-off events. [2024-02-07 14:29:08,627 INFO L125 PetriNetUnfolderBase]: For 22904/22904 co-relation queries the response was YES. [2024-02-07 14:29:08,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89361 conditions, 31953 events. 27399/31953 cut-off events. For 22904/22904 co-relation queries the response was YES. Maximal size of possible extension queue 958. Compared 114520 event pairs, 2133 based on Foata normal form. 486/32379 useless extension candidates. Maximal degree in co-relation 45925. Up to 13828 conditions per place. [2024-02-07 14:29:08,790 INFO L140 encePairwiseOnDemand]: 47/53 looper letters, 116 selfloop transitions, 9 changer transitions 0/132 dead transitions. [2024-02-07 14:29:08,791 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 132 transitions, 664 flow [2024-02-07 14:29:08,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-07 14:29:08,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-07 14:29:08,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 186 transitions. [2024-02-07 14:29:08,795 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7018867924528301 [2024-02-07 14:29:08,795 INFO L175 Difference]: Start difference. First operand has 54 places, 58 transitions, 211 flow. Second operand 5 states and 186 transitions. [2024-02-07 14:29:08,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 132 transitions, 664 flow [2024-02-07 14:29:08,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 132 transitions, 664 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-02-07 14:29:08,809 INFO L231 Difference]: Finished difference. Result has 59 places, 57 transitions, 227 flow [2024-02-07 14:29:08,809 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=197, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=227, PETRI_PLACES=59, PETRI_TRANSITIONS=57} [2024-02-07 14:29:08,811 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 0 predicate places. [2024-02-07 14:29:08,811 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 57 transitions, 227 flow [2024-02-07 14:29:08,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:29:08,812 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:29:08,812 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:29:08,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-02-07 14:29:08,813 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2024-02-07 14:29:08,813 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:29:08,813 INFO L85 PathProgramCache]: Analyzing trace with hash 633570210, now seen corresponding path program 1 times [2024-02-07 14:29:08,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:29:08,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086506733] [2024-02-07 14:29:08,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:29:08,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:29:08,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:29:08,934 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:29:08,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:29:08,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086506733] [2024-02-07 14:29:08,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086506733] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-07 14:29:08,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1793301736] [2024-02-07 14:29:08,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:29:08,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-07 14:29:08,938 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-07 14:29:08,961 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-07 14:29:08,980 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-02-07 14:29:09,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:29:09,111 INFO L262 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 3 conjunts are in the unsatisfiable core [2024-02-07 14:29:09,116 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-07 14:29:09,424 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:29:09,424 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-07 14:29:09,525 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:29:09,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1793301736] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-07 14:29:09,525 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-07 14:29:09,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2024-02-07 14:29:09,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712358795] [2024-02-07 14:29:09,526 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-07 14:29:09,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-07 14:29:09,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:29:09,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-07 14:29:09,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-02-07 14:29:09,532 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 53 [2024-02-07 14:29:09,532 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 57 transitions, 227 flow. Second operand has 6 states, 6 states have (on average 21.333333333333332) internal successors, (128), 6 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:29:09,533 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:29:09,533 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 53 [2024-02-07 14:29:09,533 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:29:11,720 INFO L124 PetriNetUnfolderBase]: 36977/43925 cut-off events. [2024-02-07 14:29:11,720 INFO L125 PetriNetUnfolderBase]: For 48274/48274 co-relation queries the response was YES. [2024-02-07 14:29:11,776 INFO L83 FinitePrefix]: Finished finitePrefix Result has 131123 conditions, 43925 events. 36977/43925 cut-off events. For 48274/48274 co-relation queries the response was YES. Maximal size of possible extension queue 1426. Compared 177776 event pairs, 5688 based on Foata normal form. 912/44577 useless extension candidates. Maximal degree in co-relation 68730. Up to 21123 conditions per place. [2024-02-07 14:29:11,930 INFO L140 encePairwiseOnDemand]: 47/53 looper letters, 138 selfloop transitions, 9 changer transitions 0/154 dead transitions. [2024-02-07 14:29:11,930 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 154 transitions, 922 flow [2024-02-07 14:29:11,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-07 14:29:11,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-07 14:29:11,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 203 transitions. [2024-02-07 14:29:11,931 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6383647798742138 [2024-02-07 14:29:11,932 INFO L175 Difference]: Start difference. First operand has 59 places, 57 transitions, 227 flow. Second operand 6 states and 203 transitions. [2024-02-07 14:29:11,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 154 transitions, 922 flow [2024-02-07 14:29:11,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 154 transitions, 893 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-07 14:29:11,939 INFO L231 Difference]: Finished difference. Result has 65 places, 62 transitions, 273 flow [2024-02-07 14:29:11,939 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=273, PETRI_PLACES=65, PETRI_TRANSITIONS=62} [2024-02-07 14:29:11,940 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 6 predicate places. [2024-02-07 14:29:11,940 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 62 transitions, 273 flow [2024-02-07 14:29:11,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.333333333333332) internal successors, (128), 6 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:29:11,940 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:29:11,940 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:29:11,952 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-02-07 14:29:12,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-07 14:29:12,153 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2024-02-07 14:29:12,153 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:29:12,153 INFO L85 PathProgramCache]: Analyzing trace with hash -1049044396, now seen corresponding path program 1 times [2024-02-07 14:29:12,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:29:12,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885753746] [2024-02-07 14:29:12,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:29:12,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:29:12,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:29:12,292 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:29:12,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:29:12,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885753746] [2024-02-07 14:29:12,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885753746] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-07 14:29:12,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [267174870] [2024-02-07 14:29:12,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:29:12,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-07 14:29:12,293 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-07 14:29:12,294 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-07 14:29:12,297 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-02-07 14:29:12,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:29:12,404 INFO L262 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 3 conjunts are in the unsatisfiable core [2024-02-07 14:29:12,406 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-07 14:29:12,536 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:29:12,536 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-07 14:29:12,629 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:29:12,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [267174870] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-07 14:29:12,630 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-07 14:29:12,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2024-02-07 14:29:12,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719402460] [2024-02-07 14:29:12,630 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-07 14:29:12,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-07 14:29:12,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:29:12,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-07 14:29:12,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-02-07 14:29:12,636 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 53 [2024-02-07 14:29:12,637 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 62 transitions, 273 flow. Second operand has 6 states, 6 states have (on average 22.666666666666668) internal successors, (136), 6 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:29:12,637 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:29:12,637 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 53 [2024-02-07 14:29:12,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:29:15,944 INFO L124 PetriNetUnfolderBase]: 49645/60084 cut-off events. [2024-02-07 14:29:15,944 INFO L125 PetriNetUnfolderBase]: For 106394/106442 co-relation queries the response was YES. [2024-02-07 14:29:16,048 INFO L83 FinitePrefix]: Finished finitePrefix Result has 207869 conditions, 60084 events. 49645/60084 cut-off events. For 106394/106442 co-relation queries the response was YES. Maximal size of possible extension queue 2117. Compared 271073 event pairs, 8210 based on Foata normal form. 1160/60568 useless extension candidates. Maximal degree in co-relation 112992. Up to 26532 conditions per place. [2024-02-07 14:29:16,438 INFO L140 encePairwiseOnDemand]: 47/53 looper letters, 150 selfloop transitions, 9 changer transitions 0/166 dead transitions. [2024-02-07 14:29:16,439 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 166 transitions, 1089 flow [2024-02-07 14:29:16,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-07 14:29:16,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-07 14:29:16,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 195 transitions. [2024-02-07 14:29:16,440 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6132075471698113 [2024-02-07 14:29:16,440 INFO L175 Difference]: Start difference. First operand has 65 places, 62 transitions, 273 flow. Second operand 6 states and 195 transitions. [2024-02-07 14:29:16,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 166 transitions, 1089 flow [2024-02-07 14:29:16,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 166 transitions, 1087 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-02-07 14:29:16,477 INFO L231 Difference]: Finished difference. Result has 72 places, 67 transitions, 328 flow [2024-02-07 14:29:16,477 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=271, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=328, PETRI_PLACES=72, PETRI_TRANSITIONS=67} [2024-02-07 14:29:16,478 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 13 predicate places. [2024-02-07 14:29:16,478 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 67 transitions, 328 flow [2024-02-07 14:29:16,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.666666666666668) internal successors, (136), 6 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:29:16,478 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:29:16,478 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:29:16,489 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-02-07 14:29:16,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-02-07 14:29:16,685 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2024-02-07 14:29:16,685 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:29:16,685 INFO L85 PathProgramCache]: Analyzing trace with hash 797931788, now seen corresponding path program 2 times [2024-02-07 14:29:16,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:29:16,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788536837] [2024-02-07 14:29:16,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:29:16,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:29:16,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:29:16,798 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:29:16,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:29:16,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788536837] [2024-02-07 14:29:16,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788536837] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:29:16,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:29:16,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-07 14:29:16,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550856021] [2024-02-07 14:29:16,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:29:16,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 14:29:16,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:29:16,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 14:29:16,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-07 14:29:16,804 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 53 [2024-02-07 14:29:16,804 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 67 transitions, 328 flow. Second operand has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:29:16,804 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:29:16,804 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 53 [2024-02-07 14:29:16,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:29:19,724 INFO L124 PetriNetUnfolderBase]: 43205/51706 cut-off events. [2024-02-07 14:29:19,724 INFO L125 PetriNetUnfolderBase]: For 107216/107288 co-relation queries the response was YES. [2024-02-07 14:29:19,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 201466 conditions, 51706 events. 43205/51706 cut-off events. For 107216/107288 co-relation queries the response was YES. Maximal size of possible extension queue 1794. Compared 219979 event pairs, 2866 based on Foata normal form. 664/52306 useless extension candidates. Maximal degree in co-relation 111442. Up to 22830 conditions per place. [2024-02-07 14:29:20,237 INFO L140 encePairwiseOnDemand]: 47/53 looper letters, 158 selfloop transitions, 12 changer transitions 0/177 dead transitions. [2024-02-07 14:29:20,237 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 177 transitions, 1222 flow [2024-02-07 14:29:20,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-07 14:29:20,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-07 14:29:20,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 183 transitions. [2024-02-07 14:29:20,238 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.690566037735849 [2024-02-07 14:29:20,239 INFO L175 Difference]: Start difference. First operand has 72 places, 67 transitions, 328 flow. Second operand 5 states and 183 transitions. [2024-02-07 14:29:20,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 177 transitions, 1222 flow [2024-02-07 14:29:20,716 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 177 transitions, 1220 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-02-07 14:29:20,718 INFO L231 Difference]: Finished difference. Result has 76 places, 72 transitions, 389 flow [2024-02-07 14:29:20,718 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=326, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=389, PETRI_PLACES=76, PETRI_TRANSITIONS=72} [2024-02-07 14:29:20,718 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 17 predicate places. [2024-02-07 14:29:20,719 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 72 transitions, 389 flow [2024-02-07 14:29:20,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:29:20,719 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:29:20,719 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:29:20,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-02-07 14:29:20,719 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2024-02-07 14:29:20,720 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:29:20,720 INFO L85 PathProgramCache]: Analyzing trace with hash 2030853027, now seen corresponding path program 1 times [2024-02-07 14:29:20,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:29:20,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775308189] [2024-02-07 14:29:20,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:29:20,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:29:20,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:29:20,785 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:29:20,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:29:20,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775308189] [2024-02-07 14:29:20,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775308189] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:29:20,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:29:20,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-07 14:29:20,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221565076] [2024-02-07 14:29:20,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:29:20,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 14:29:20,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:29:20,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 14:29:20,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-07 14:29:20,789 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 53 [2024-02-07 14:29:20,790 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 72 transitions, 389 flow. Second operand has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:29:20,790 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:29:20,790 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 53 [2024-02-07 14:29:20,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:29:23,847 INFO L124 PetriNetUnfolderBase]: 42713/51442 cut-off events. [2024-02-07 14:29:23,848 INFO L125 PetriNetUnfolderBase]: For 135650/135698 co-relation queries the response was YES. [2024-02-07 14:29:23,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 211913 conditions, 51442 events. 42713/51442 cut-off events. For 135650/135698 co-relation queries the response was YES. Maximal size of possible extension queue 1806. Compared 220653 event pairs, 1884 based on Foata normal form. 504/51582 useless extension candidates. Maximal degree in co-relation 118132. Up to 22338 conditions per place. [2024-02-07 14:29:24,185 INFO L140 encePairwiseOnDemand]: 47/53 looper letters, 174 selfloop transitions, 11 changer transitions 0/192 dead transitions. [2024-02-07 14:29:24,186 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 192 transitions, 1453 flow [2024-02-07 14:29:24,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-07 14:29:24,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-07 14:29:24,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 179 transitions. [2024-02-07 14:29:24,187 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6754716981132075 [2024-02-07 14:29:24,187 INFO L175 Difference]: Start difference. First operand has 76 places, 72 transitions, 389 flow. Second operand 5 states and 179 transitions. [2024-02-07 14:29:24,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 192 transitions, 1453 flow [2024-02-07 14:29:24,830 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 192 transitions, 1429 flow, removed 12 selfloop flow, removed 0 redundant places. [2024-02-07 14:29:24,833 INFO L231 Difference]: Finished difference. Result has 81 places, 77 transitions, 448 flow [2024-02-07 14:29:24,834 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=383, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=448, PETRI_PLACES=81, PETRI_TRANSITIONS=77} [2024-02-07 14:29:24,837 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 22 predicate places. [2024-02-07 14:29:24,837 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 77 transitions, 448 flow [2024-02-07 14:29:24,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:29:24,837 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:29:24,837 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:29:24,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-02-07 14:29:24,838 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2024-02-07 14:29:24,838 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:29:24,838 INFO L85 PathProgramCache]: Analyzing trace with hash -1702835069, now seen corresponding path program 1 times [2024-02-07 14:29:24,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:29:24,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117843392] [2024-02-07 14:29:24,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:29:24,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:29:24,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:29:24,936 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:29:24,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:29:24,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117843392] [2024-02-07 14:29:24,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117843392] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:29:24,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:29:24,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-07 14:29:24,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961683179] [2024-02-07 14:29:24,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:29:24,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 14:29:24,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:29:24,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 14:29:24,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-07 14:29:24,942 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 53 [2024-02-07 14:29:24,942 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 77 transitions, 448 flow. Second operand has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:29:24,942 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:29:24,942 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 53 [2024-02-07 14:29:24,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:29:28,329 INFO L124 PetriNetUnfolderBase]: 42005/50506 cut-off events. [2024-02-07 14:29:28,329 INFO L125 PetriNetUnfolderBase]: For 145321/145393 co-relation queries the response was YES. [2024-02-07 14:29:28,446 INFO L83 FinitePrefix]: Finished finitePrefix Result has 215341 conditions, 50506 events. 42005/50506 cut-off events. For 145321/145393 co-relation queries the response was YES. Maximal size of possible extension queue 1793. Compared 220421 event pairs, 2444 based on Foata normal form. 720/51174 useless extension candidates. Maximal degree in co-relation 123820. Up to 22811 conditions per place. [2024-02-07 14:29:28,661 INFO L140 encePairwiseOnDemand]: 47/53 looper letters, 177 selfloop transitions, 9 changer transitions 0/193 dead transitions. [2024-02-07 14:29:28,661 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 193 transitions, 1478 flow [2024-02-07 14:29:28,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-07 14:29:28,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-07 14:29:28,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 182 transitions. [2024-02-07 14:29:28,663 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6867924528301886 [2024-02-07 14:29:28,663 INFO L175 Difference]: Start difference. First operand has 81 places, 77 transitions, 448 flow. Second operand 5 states and 182 transitions. [2024-02-07 14:29:28,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 193 transitions, 1478 flow [2024-02-07 14:29:29,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 193 transitions, 1441 flow, removed 16 selfloop flow, removed 1 redundant places. [2024-02-07 14:29:29,056 INFO L231 Difference]: Finished difference. Result has 85 places, 76 transitions, 451 flow [2024-02-07 14:29:29,056 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=417, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=451, PETRI_PLACES=85, PETRI_TRANSITIONS=76} [2024-02-07 14:29:29,057 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 26 predicate places. [2024-02-07 14:29:29,057 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 76 transitions, 451 flow [2024-02-07 14:29:29,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:29:29,057 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:29:29,057 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:29:29,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-02-07 14:29:29,058 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2024-02-07 14:29:29,058 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:29:29,058 INFO L85 PathProgramCache]: Analyzing trace with hash -1810557016, now seen corresponding path program 2 times [2024-02-07 14:29:29,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:29:29,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421317617] [2024-02-07 14:29:29,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:29:29,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:29:29,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:29:29,122 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:29:29,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:29:29,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421317617] [2024-02-07 14:29:29,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421317617] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:29:29,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:29:29,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-07 14:29:29,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635151442] [2024-02-07 14:29:29,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:29:29,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 14:29:29,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:29:29,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 14:29:29,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-07 14:29:29,126 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 53 [2024-02-07 14:29:29,126 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 76 transitions, 451 flow. Second operand has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:29:29,126 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:29:29,126 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 53 [2024-02-07 14:29:29,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:29:32,145 INFO L124 PetriNetUnfolderBase]: 37497/45226 cut-off events. [2024-02-07 14:29:32,146 INFO L125 PetriNetUnfolderBase]: For 140843/140891 co-relation queries the response was YES. [2024-02-07 14:29:32,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 196476 conditions, 45226 events. 37497/45226 cut-off events. For 140843/140891 co-relation queries the response was YES. Maximal size of possible extension queue 1581. Compared 190195 event pairs, 2388 based on Foata normal form. 496/45382 useless extension candidates. Maximal degree in co-relation 134552. Up to 19058 conditions per place. [2024-02-07 14:29:32,440 INFO L140 encePairwiseOnDemand]: 47/53 looper letters, 170 selfloop transitions, 10 changer transitions 0/187 dead transitions. [2024-02-07 14:29:32,440 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 187 transitions, 1466 flow [2024-02-07 14:29:32,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-07 14:29:32,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-07 14:29:32,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 178 transitions. [2024-02-07 14:29:32,460 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6716981132075471 [2024-02-07 14:29:32,461 INFO L175 Difference]: Start difference. First operand has 85 places, 76 transitions, 451 flow. Second operand 5 states and 178 transitions. [2024-02-07 14:29:32,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 187 transitions, 1466 flow [2024-02-07 14:29:32,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 187 transitions, 1414 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-02-07 14:29:32,792 INFO L231 Difference]: Finished difference. Result has 87 places, 75 transitions, 446 flow [2024-02-07 14:29:32,792 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=411, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=446, PETRI_PLACES=87, PETRI_TRANSITIONS=75} [2024-02-07 14:29:32,793 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 28 predicate places. [2024-02-07 14:29:32,793 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 75 transitions, 446 flow [2024-02-07 14:29:32,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:29:32,793 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:29:32,793 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:29:32,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-02-07 14:29:32,793 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2024-02-07 14:29:32,794 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:29:32,794 INFO L85 PathProgramCache]: Analyzing trace with hash 1459317947, now seen corresponding path program 2 times [2024-02-07 14:29:32,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:29:32,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127087793] [2024-02-07 14:29:32,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:29:32,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:29:32,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:29:32,861 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:29:32,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:29:32,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127087793] [2024-02-07 14:29:32,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127087793] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-07 14:29:32,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [71126005] [2024-02-07 14:29:32,862 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-02-07 14:29:32,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-07 14:29:32,862 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-07 14:29:32,877 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-07 14:29:32,878 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-02-07 14:29:33,004 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-02-07 14:29:33,005 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-07 14:29:33,006 INFO L262 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 3 conjunts are in the unsatisfiable core [2024-02-07 14:29:33,008 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-07 14:29:33,430 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:29:33,431 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-07 14:29:33,557 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:29:33,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [71126005] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-07 14:29:33,557 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-07 14:29:33,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2024-02-07 14:29:33,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131689839] [2024-02-07 14:29:33,558 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-07 14:29:33,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-07 14:29:33,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:29:33,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-07 14:29:33,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-02-07 14:29:33,563 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 53 [2024-02-07 14:29:33,563 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 75 transitions, 446 flow. Second operand has 6 states, 6 states have (on average 24.166666666666668) internal successors, (145), 6 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:29:33,564 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:29:33,564 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 53 [2024-02-07 14:29:33,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:29:36,441 INFO L124 PetriNetUnfolderBase]: 36529/44402 cut-off events. [2024-02-07 14:29:36,442 INFO L125 PetriNetUnfolderBase]: For 128230/128278 co-relation queries the response was YES. [2024-02-07 14:29:36,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 195649 conditions, 44402 events. 36529/44402 cut-off events. For 128230/128278 co-relation queries the response was YES. Maximal size of possible extension queue 1526. Compared 196744 event pairs, 6226 based on Foata normal form. 980/44898 useless extension candidates. Maximal degree in co-relation 126650. Up to 23229 conditions per place. [2024-02-07 14:29:37,004 INFO L140 encePairwiseOnDemand]: 47/53 looper letters, 165 selfloop transitions, 9 changer transitions 0/181 dead transitions. [2024-02-07 14:29:37,004 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 181 transitions, 1392 flow [2024-02-07 14:29:37,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-07 14:29:37,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-07 14:29:37,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 189 transitions. [2024-02-07 14:29:37,006 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5943396226415094 [2024-02-07 14:29:37,006 INFO L175 Difference]: Start difference. First operand has 87 places, 75 transitions, 446 flow. Second operand 6 states and 189 transitions. [2024-02-07 14:29:37,006 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 181 transitions, 1392 flow [2024-02-07 14:29:37,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 181 transitions, 1379 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-02-07 14:29:37,261 INFO L231 Difference]: Finished difference. Result has 92 places, 78 transitions, 485 flow [2024-02-07 14:29:37,261 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=433, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=485, PETRI_PLACES=92, PETRI_TRANSITIONS=78} [2024-02-07 14:29:37,262 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 33 predicate places. [2024-02-07 14:29:37,262 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 78 transitions, 485 flow [2024-02-07 14:29:37,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.166666666666668) internal successors, (145), 6 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:29:37,262 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:29:37,262 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:29:37,274 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-02-07 14:29:37,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-07 14:29:37,473 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2024-02-07 14:29:37,474 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:29:37,474 INFO L85 PathProgramCache]: Analyzing trace with hash 201465547, now seen corresponding path program 2 times [2024-02-07 14:29:37,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:29:37,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383207894] [2024-02-07 14:29:37,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:29:37,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:29:37,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:29:37,561 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:29:37,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:29:37,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383207894] [2024-02-07 14:29:37,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383207894] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-07 14:29:37,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1376962884] [2024-02-07 14:29:37,562 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-02-07 14:29:37,562 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-07 14:29:37,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-07 14:29:37,576 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-07 14:29:37,639 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-02-07 14:29:37,732 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-02-07 14:29:37,732 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-07 14:29:37,734 INFO L262 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 3 conjunts are in the unsatisfiable core [2024-02-07 14:29:37,735 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-07 14:29:37,824 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:29:37,824 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-07 14:29:37,883 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:29:37,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1376962884] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-07 14:29:37,884 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-07 14:29:37,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2024-02-07 14:29:37,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720213961] [2024-02-07 14:29:37,886 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-07 14:29:37,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-07 14:29:37,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:29:37,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-07 14:29:37,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-02-07 14:29:37,891 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 53 [2024-02-07 14:29:37,891 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 78 transitions, 485 flow. Second operand has 6 states, 6 states have (on average 22.166666666666668) internal successors, (133), 6 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:29:37,891 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:29:37,891 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 53 [2024-02-07 14:29:37,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:29:40,698 INFO L124 PetriNetUnfolderBase]: 35377/43046 cut-off events. [2024-02-07 14:29:40,698 INFO L125 PetriNetUnfolderBase]: For 133814/134102 co-relation queries the response was YES. [2024-02-07 14:29:41,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 197428 conditions, 43046 events. 35377/43046 cut-off events. For 133814/134102 co-relation queries the response was YES. Maximal size of possible extension queue 1446. Compared 191914 event pairs, 7062 based on Foata normal form. 1200/44050 useless extension candidates. Maximal degree in co-relation 176164. Up to 23805 conditions per place. [2024-02-07 14:29:41,347 INFO L140 encePairwiseOnDemand]: 47/53 looper letters, 181 selfloop transitions, 9 changer transitions 0/197 dead transitions. [2024-02-07 14:29:41,348 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 197 transitions, 1606 flow [2024-02-07 14:29:41,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-07 14:29:41,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-07 14:29:41,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 193 transitions. [2024-02-07 14:29:41,349 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6069182389937107 [2024-02-07 14:29:41,349 INFO L175 Difference]: Start difference. First operand has 92 places, 78 transitions, 485 flow. Second operand 6 states and 193 transitions. [2024-02-07 14:29:41,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 197 transitions, 1606 flow