./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/ldv-races/race-1_2-join.i --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/race-1_2-join.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e7c74aec 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/ldv-races/race-1_2-join.i ./goblint.2024-02-07_10-47-16.files/SV-COMP24_unreach-call/race-1_2-join.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-wip.fs.fix-undeclared-acsl-variable-e7c74ae-m [2024-02-07 19:31:18,766 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-02-07 19:31:18,831 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-02-07 19:31:18,844 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-02-07 19:31:18,845 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-02-07 19:31:18,875 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-02-07 19:31:18,875 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-02-07 19:31:18,876 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-02-07 19:31:18,876 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-02-07 19:31:18,879 INFO L153 SettingsManager]: * Use memory slicer=true [2024-02-07 19:31:18,879 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-02-07 19:31:18,880 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-02-07 19:31:18,881 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-02-07 19:31:18,882 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-02-07 19:31:18,882 INFO L153 SettingsManager]: * Use SBE=true [2024-02-07 19:31:18,882 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-02-07 19:31:18,882 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-02-07 19:31:18,883 INFO L153 SettingsManager]: * sizeof long=4 [2024-02-07 19:31:18,883 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-02-07 19:31:18,883 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-02-07 19:31:18,884 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-02-07 19:31:18,884 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-02-07 19:31:18,884 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-02-07 19:31:18,885 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-02-07 19:31:18,885 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-02-07 19:31:18,885 INFO L153 SettingsManager]: * sizeof long double=12 [2024-02-07 19:31:18,885 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-02-07 19:31:18,885 INFO L153 SettingsManager]: * Use constant arrays=true [2024-02-07 19:31:18,886 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-02-07 19:31:18,886 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-02-07 19:31:18,887 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-02-07 19:31:18,887 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-02-07 19:31:18,887 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-07 19:31:18,887 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-02-07 19:31:18,888 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-02-07 19:31:18,888 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-02-07 19:31:18,888 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-02-07 19:31:18,888 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-02-07 19:31:18,888 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-02-07 19:31:18,889 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-02-07 19:31:18,889 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-02-07 19:31:18,889 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-02-07 19:31:18,889 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-02-07 19:31:18,889 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-02-07 19:31:19,079 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-02-07 19:31:19,096 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-02-07 19:31:19,098 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-02-07 19:31:19,099 INFO L270 PluginConnector]: Initializing CDTParser... [2024-02-07 19:31:19,100 INFO L274 PluginConnector]: CDTParser initialized [2024-02-07 19:31:19,101 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-races/race-1_2-join.i [2024-02-07 19:31:20,131 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-02-07 19:31:20,365 INFO L384 CDTParser]: Found 1 translation units. [2024-02-07 19:31:20,365 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-1_2-join.i [2024-02-07 19:31:20,406 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eae36f0ea/45850eb2f81547dab754fdfd2ec27140/FLAG665175256 [2024-02-07 19:31:20,416 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eae36f0ea/45850eb2f81547dab754fdfd2ec27140 [2024-02-07 19:31:20,420 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-02-07 19:31:20,421 INFO L274 PluginConnector]: Witness Parser initialized [2024-02-07 19:31:20,423 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-02-07_10-47-16.files/SV-COMP24_unreach-call/race-1_2-join.yml/witness.yml [2024-02-07 19:31:20,504 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-02-07 19:31:20,505 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-02-07 19:31:20,506 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-02-07 19:31:20,506 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-02-07 19:31:20,510 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-02-07 19:31:20,511 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 07:31:20" (1/2) ... [2024-02-07 19:31:20,512 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@546bac49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:31:20, skipping insertion in model container [2024-02-07 19:31:20,512 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 07:31:20" (1/2) ... [2024-02-07 19:31:20,513 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2f14b825 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:31:20, skipping insertion in model container [2024-02-07 19:31:20,514 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 07:31:20" (2/2) ... [2024-02-07 19:31:20,514 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@546bac49 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 07:31:20, skipping insertion in model container [2024-02-07 19:31:20,514 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 07:31:20" (2/2) ... [2024-02-07 19:31:20,514 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-02-07 19:31:20,616 INFO L74 edCorrectnessWitness]: Found the following entries in the witness: [2024-02-07 19:31:20,618 INFO L76 edCorrectnessWitness]: Location invariant before [L1710-L1710] pdev == 1 [2024-02-07 19:31:20,618 INFO L76 edCorrectnessWitness]: Location invariant before [L1717-L1717] (((((0 <= pdev) && (1 <= pdev)) && (pdev <= 6)) && (pdev <= 127)) && (pdev != 0)) && (((pdev == 1 || pdev == 2) || pdev == 5) || pdev == 6) [2024-02-07 19:31:20,618 INFO L76 edCorrectnessWitness]: Location invariant before [L1695-L1695] (expression == 1 || ((0 <= expression && expression <= 1) && (expression == 0 || expression == 1))) || ((0 <= expression && expression <= 1) && (expression == 0 || expression == 1)) [2024-02-07 19:31:20,618 INFO L76 edCorrectnessWitness]: Location invariant before [L1729-L1729] (unsigned long )status == 0UL [2024-02-07 19:31:20,618 INFO L76 edCorrectnessWitness]: Location invariant before [L1703-L1703] (((((0 <= pdev) && (1 <= pdev)) && (pdev <= 6)) && (pdev <= 127)) && (pdev != 0)) && (((pdev == 1 || pdev == 2) || pdev == 5) || pdev == 6) [2024-02-07 19:31:20,619 INFO L76 edCorrectnessWitness]: Location invariant before [L1715-L1715] (((((0 <= pdev) && (1 <= pdev)) && (pdev <= 6)) && (pdev <= 127)) && (pdev != 0)) && (((pdev == 1 || pdev == 2) || pdev == 5) || pdev == 6) [2024-02-07 19:31:20,619 INFO L76 edCorrectnessWitness]: Location invariant before [L1731-L1731] (((((0 <= pdev) && (1 <= pdev)) && (pdev <= 6)) && (pdev <= 127)) && (pdev != 0)) && (((pdev == 1 || pdev == 2) || pdev == 5) || pdev == 6) [2024-02-07 19:31:20,619 INFO L76 edCorrectnessWitness]: Location invariant before [L1722-L1722] pdev == 3 [2024-02-07 19:31:20,660 INFO L181 MainTranslator]: Built tables and reachable declarations [2024-02-07 19:31:21,112 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-1_2-join.i[76153,76166] [2024-02-07 19:31:21,148 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-02-07 19:31:21,167 INFO L206 MainTranslator]: Completed pre-run Start Parsing Local [2024-02-07 19:31:21,259 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-1_2-join.i[76153,76166] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-02-07 19:31:21,289 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-02-07 19:31:21,414 INFO L211 MainTranslator]: Completed translation [2024-02-07 19:31:21,415 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 07:31:21 WrapperNode [2024-02-07 19:31:21,415 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-02-07 19:31:21,416 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-02-07 19:31:21,416 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-02-07 19:31:21,417 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-02-07 19:31:21,422 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 07:31:21" (1/1) ... [2024-02-07 19:31:21,454 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 07:31:21" (1/1) ... [2024-02-07 19:31:21,489 INFO L138 Inliner]: procedures = 483, calls = 35, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 102 [2024-02-07 19:31:21,489 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-02-07 19:31:21,490 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-02-07 19:31:21,490 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-02-07 19:31:21,490 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-02-07 19:31:21,499 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 07:31:21" (1/1) ... [2024-02-07 19:31:21,499 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 07:31:21" (1/1) ... [2024-02-07 19:31:21,505 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 07:31:21" (1/1) ... [2024-02-07 19:31:21,523 INFO L175 MemorySlicer]: Split 12 memory accesses to 4 slices as follows [2, 3, 5, 2]. 42 percent of accesses are in the largest equivalence class. The 8 initializations are split as follows [2, 1, 5, 0]. The 2 writes are split as follows [0, 1, 0, 1]. [2024-02-07 19:31:21,524 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 07:31:21" (1/1) ... [2024-02-07 19:31:21,524 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 07:31:21" (1/1) ... [2024-02-07 19:31:21,532 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 07:31:21" (1/1) ... [2024-02-07 19:31:21,535 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 07:31:21" (1/1) ... [2024-02-07 19:31:21,538 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 07:31:21" (1/1) ... [2024-02-07 19:31:21,540 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 07:31:21" (1/1) ... [2024-02-07 19:31:21,545 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-02-07 19:31:21,546 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-02-07 19:31:21,546 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-02-07 19:31:21,546 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-02-07 19:31:21,546 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 07:31:21" (1/1) ... [2024-02-07 19:31:21,551 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-07 19:31:21,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-07 19:31:21,570 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 19:31:21,578 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 19:31:21,603 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-02-07 19:31:21,603 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-02-07 19:31:21,603 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-02-07 19:31:21,603 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-02-07 19:31:21,603 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-02-07 19:31:21,604 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-02-07 19:31:21,604 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-02-07 19:31:21,604 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-02-07 19:31:21,604 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-02-07 19:31:21,604 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-02-07 19:31:21,604 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-02-07 19:31:21,604 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-02-07 19:31:21,604 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-02-07 19:31:21,604 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-02-07 19:31:21,605 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-02-07 19:31:21,605 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-02-07 19:31:21,605 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-02-07 19:31:21,605 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-02-07 19:31:21,605 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-02-07 19:31:21,605 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-02-07 19:31:21,605 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-02-07 19:31:21,605 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-02-07 19:31:21,606 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-02-07 19:31:21,606 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-02-07 19:31:21,606 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-02-07 19:31:21,606 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-02-07 19:31:21,606 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-02-07 19:31:21,606 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-02-07 19:31:21,606 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-02-07 19:31:21,606 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-02-07 19:31:21,607 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-02-07 19:31:21,608 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 19:31:21,844 INFO L244 CfgBuilder]: Building ICFG [2024-02-07 19:31:21,846 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-02-07 19:31:22,012 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-02-07 19:31:22,013 INFO L293 CfgBuilder]: Performing block encoding [2024-02-07 19:31:22,134 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-02-07 19:31:22,135 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-02-07 19:31:22,135 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.02 07:31:22 BoogieIcfgContainer [2024-02-07 19:31:22,135 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-02-07 19:31:22,138 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-02-07 19:31:22,138 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-02-07 19:31:22,140 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-02-07 19:31:22,140 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.02 07:31:20" (1/4) ... [2024-02-07 19:31:22,142 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a827d5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 07:31:22, skipping insertion in model container [2024-02-07 19:31:22,142 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 07:31:20" (2/4) ... [2024-02-07 19:31:22,142 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a827d5a and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 07.02 07:31:22, skipping insertion in model container [2024-02-07 19:31:22,143 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 07:31:21" (3/4) ... [2024-02-07 19:31:22,143 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a827d5a and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 07.02 07:31:22, skipping insertion in model container [2024-02-07 19:31:22,144 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.02 07:31:22" (4/4) ... [2024-02-07 19:31:22,145 INFO L112 eAbstractionObserver]: Analyzing ICFG race-1_2-join.i [2024-02-07 19:31:22,160 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-02-07 19:31:22,160 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 15 error locations. [2024-02-07 19:31:22,160 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-02-07 19:31:22,202 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-02-07 19:31:22,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 54 places, 55 transitions, 117 flow [2024-02-07 19:31:22,263 INFO L124 PetriNetUnfolderBase]: 4/58 cut-off events. [2024-02-07 19:31:22,263 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-02-07 19:31:22,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63 conditions, 58 events. 4/58 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 117 event pairs, 0 based on Foata normal form. 0/37 useless extension candidates. Maximal degree in co-relation 25. Up to 3 conditions per place. [2024-02-07 19:31:22,265 INFO L82 GeneralOperation]: Start removeDead. Operand has 54 places, 55 transitions, 117 flow [2024-02-07 19:31:22,269 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 51 places, 48 transitions, 102 flow [2024-02-07 19:31:22,280 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-07 19:31:22,285 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;@5faf9f56, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-07 19:31:22,285 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2024-02-07 19:31:22,287 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-07 19:31:22,287 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2024-02-07 19:31:22,287 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-07 19:31:22,287 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:31:22,288 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-02-07 19:31:22,289 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 14 more)] === [2024-02-07 19:31:22,294 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:31:22,295 INFO L85 PathProgramCache]: Analyzing trace with hash 10399, now seen corresponding path program 1 times [2024-02-07 19:31:22,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:31:22,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737838112] [2024-02-07 19:31:22,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:31:22,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:31:22,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:31:22,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:31:22,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:31:22,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737838112] [2024-02-07 19:31:22,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737838112] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:31:22,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:31:22,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-02-07 19:31:22,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672984723] [2024-02-07 19:31:22,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:31:22,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 19:31:22,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:31:22,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 19:31:22,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 19:31:22,612 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 55 [2024-02-07 19:31:22,615 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 48 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:31:22,615 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:31:22,615 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 55 [2024-02-07 19:31:22,618 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:31:22,704 INFO L124 PetriNetUnfolderBase]: 36/116 cut-off events. [2024-02-07 19:31:22,704 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-02-07 19:31:22,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 219 conditions, 116 events. 36/116 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 336 event pairs, 22 based on Foata normal form. 1/95 useless extension candidates. Maximal degree in co-relation 174. Up to 89 conditions per place. [2024-02-07 19:31:22,707 INFO L140 encePairwiseOnDemand]: 46/55 looper letters, 23 selfloop transitions, 4 changer transitions 2/47 dead transitions. [2024-02-07 19:31:22,708 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 47 transitions, 158 flow [2024-02-07 19:31:22,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 19:31:22,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 19:31:22,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 99 transitions. [2024-02-07 19:31:22,718 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-02-07 19:31:22,720 INFO L175 Difference]: Start difference. First operand has 51 places, 48 transitions, 102 flow. Second operand 3 states and 99 transitions. [2024-02-07 19:31:22,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 47 transitions, 158 flow [2024-02-07 19:31:22,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 47 transitions, 154 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-07 19:31:22,726 INFO L231 Difference]: Finished difference. Result has 48 places, 43 transitions, 104 flow [2024-02-07 19:31:22,728 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=48, PETRI_TRANSITIONS=43} [2024-02-07 19:31:22,731 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, -3 predicate places. [2024-02-07 19:31:22,732 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 43 transitions, 104 flow [2024-02-07 19:31:22,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:31:22,732 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:31:22,732 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-02-07 19:31:22,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-02-07 19:31:22,733 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 14 more)] === [2024-02-07 19:31:22,734 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:31:22,734 INFO L85 PathProgramCache]: Analyzing trace with hash 322666, now seen corresponding path program 1 times [2024-02-07 19:31:22,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:31:22,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323117718] [2024-02-07 19:31:22,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:31:22,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:31:22,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:31:22,868 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 19:31:22,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:31:22,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323117718] [2024-02-07 19:31:22,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323117718] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:31:22,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:31:22,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 19:31:22,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340259673] [2024-02-07 19:31:22,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:31:22,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 19:31:22,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:31:22,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 19:31:22,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-07 19:31:22,910 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 55 [2024-02-07 19:31:22,911 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 43 transitions, 104 flow. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:31:22,911 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:31:22,911 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 55 [2024-02-07 19:31:22,911 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:31:23,000 INFO L124 PetriNetUnfolderBase]: 28/92 cut-off events. [2024-02-07 19:31:23,000 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2024-02-07 19:31:23,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 198 conditions, 92 events. 28/92 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 235 event pairs, 16 based on Foata normal form. 4/84 useless extension candidates. Maximal degree in co-relation 101. Up to 72 conditions per place. [2024-02-07 19:31:23,003 INFO L140 encePairwiseOnDemand]: 44/55 looper letters, 22 selfloop transitions, 6 changer transitions 2/39 dead transitions. [2024-02-07 19:31:23,004 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 39 transitions, 154 flow [2024-02-07 19:31:23,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-07 19:31:23,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-07 19:31:23,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 108 transitions. [2024-02-07 19:31:23,007 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3927272727272727 [2024-02-07 19:31:23,007 INFO L175 Difference]: Start difference. First operand has 48 places, 43 transitions, 104 flow. Second operand 5 states and 108 transitions. [2024-02-07 19:31:23,007 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 39 transitions, 154 flow [2024-02-07 19:31:23,008 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 39 transitions, 150 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-02-07 19:31:23,009 INFO L231 Difference]: Finished difference. Result has 43 places, 35 transitions, 96 flow [2024-02-07 19:31:23,009 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=96, PETRI_PLACES=43, PETRI_TRANSITIONS=35} [2024-02-07 19:31:23,010 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, -8 predicate places. [2024-02-07 19:31:23,010 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 35 transitions, 96 flow [2024-02-07 19:31:23,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:31:23,010 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:31:23,010 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-02-07 19:31:23,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-02-07 19:31:23,011 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 14 more)] === [2024-02-07 19:31:23,011 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:31:23,011 INFO L85 PathProgramCache]: Analyzing trace with hash 1645451011, now seen corresponding path program 1 times [2024-02-07 19:31:23,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:31:23,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282575832] [2024-02-07 19:31:23,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:31:23,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:31:23,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:31:23,064 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 19:31:23,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:31:23,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282575832] [2024-02-07 19:31:23,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282575832] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:31:23,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:31:23,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 19:31:23,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095109382] [2024-02-07 19:31:23,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:31:23,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 19:31:23,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:31:23,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 19:31:23,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 19:31:23,070 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 55 [2024-02-07 19:31:23,070 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 35 transitions, 96 flow. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 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 19:31:23,070 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:31:23,071 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 55 [2024-02-07 19:31:23,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:31:23,114 INFO L124 PetriNetUnfolderBase]: 28/89 cut-off events. [2024-02-07 19:31:23,114 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-02-07 19:31:23,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 194 conditions, 89 events. 28/89 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 228 event pairs, 25 based on Foata normal form. 1/78 useless extension candidates. Maximal degree in co-relation 98. Up to 77 conditions per place. [2024-02-07 19:31:23,115 INFO L140 encePairwiseOnDemand]: 53/55 looper letters, 22 selfloop transitions, 0 changer transitions 1/34 dead transitions. [2024-02-07 19:31:23,116 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 34 transitions, 140 flow [2024-02-07 19:31:23,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 19:31:23,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 19:31:23,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 88 transitions. [2024-02-07 19:31:23,117 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5333333333333333 [2024-02-07 19:31:23,117 INFO L175 Difference]: Start difference. First operand has 43 places, 35 transitions, 96 flow. Second operand 3 states and 88 transitions. [2024-02-07 19:31:23,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 34 transitions, 140 flow [2024-02-07 19:31:23,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 34 transitions, 130 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-02-07 19:31:23,118 INFO L231 Difference]: Finished difference. Result has 38 places, 33 transitions, 80 flow [2024-02-07 19:31:23,119 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=80, PETRI_PLACES=38, PETRI_TRANSITIONS=33} [2024-02-07 19:31:23,119 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, -13 predicate places. [2024-02-07 19:31:23,119 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 33 transitions, 80 flow [2024-02-07 19:31:23,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 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 19:31:23,120 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:31:23,120 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 19:31:23,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-02-07 19:31:23,120 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 14 more)] === [2024-02-07 19:31:23,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:31:23,121 INFO L85 PathProgramCache]: Analyzing trace with hash 1169414756, now seen corresponding path program 1 times [2024-02-07 19:31:23,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:31:23,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286523853] [2024-02-07 19:31:23,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:31:23,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:31:23,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:31:23,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:31:23,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:31:23,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286523853] [2024-02-07 19:31:23,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286523853] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:31:23,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:31:23,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 19:31:23,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851188330] [2024-02-07 19:31:23,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:31:23,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 19:31:23,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:31:23,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 19:31:23,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 19:31:23,213 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 55 [2024-02-07 19:31:23,213 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 33 transitions, 80 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 19:31:23,213 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:31:23,214 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 55 [2024-02-07 19:31:23,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:31:23,276 INFO L124 PetriNetUnfolderBase]: 30/104 cut-off events. [2024-02-07 19:31:23,276 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-02-07 19:31:23,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 211 conditions, 104 events. 30/104 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 306 event pairs, 8 based on Foata normal form. 0/95 useless extension candidates. Maximal degree in co-relation 207. Up to 53 conditions per place. [2024-02-07 19:31:23,277 INFO L140 encePairwiseOnDemand]: 49/55 looper letters, 27 selfloop transitions, 5 changer transitions 0/42 dead transitions. [2024-02-07 19:31:23,277 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 42 transitions, 163 flow [2024-02-07 19:31:23,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 19:31:23,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 19:31:23,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 99 transitions. [2024-02-07 19:31:23,278 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-02-07 19:31:23,279 INFO L175 Difference]: Start difference. First operand has 38 places, 33 transitions, 80 flow. Second operand 3 states and 99 transitions. [2024-02-07 19:31:23,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 42 transitions, 163 flow [2024-02-07 19:31:23,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 42 transitions, 163 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-02-07 19:31:23,280 INFO L231 Difference]: Finished difference. Result has 40 places, 35 transitions, 112 flow [2024-02-07 19:31:23,280 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=112, PETRI_PLACES=40, PETRI_TRANSITIONS=35} [2024-02-07 19:31:23,281 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, -11 predicate places. [2024-02-07 19:31:23,281 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 35 transitions, 112 flow [2024-02-07 19:31:23,281 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 19:31:23,281 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:31:23,282 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 19:31:23,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-02-07 19:31:23,282 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 14 more)] === [2024-02-07 19:31:23,282 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:31:23,282 INFO L85 PathProgramCache]: Analyzing trace with hash -1616777919, now seen corresponding path program 1 times [2024-02-07 19:31:23,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:31:23,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061447655] [2024-02-07 19:31:23,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:31:23,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:31:23,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:31:23,344 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 19:31:23,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:31:23,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061447655] [2024-02-07 19:31:23,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061447655] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:31:23,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:31:23,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 19:31:23,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640321092] [2024-02-07 19:31:23,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:31:23,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 19:31:23,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:31:23,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 19:31:23,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 19:31:23,351 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 55 [2024-02-07 19:31:23,351 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 35 transitions, 112 flow. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:31:23,351 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:31:23,351 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 55 [2024-02-07 19:31:23,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:31:23,392 INFO L124 PetriNetUnfolderBase]: 25/96 cut-off events. [2024-02-07 19:31:23,393 INFO L125 PetriNetUnfolderBase]: For 47/47 co-relation queries the response was YES. [2024-02-07 19:31:23,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 226 conditions, 96 events. 25/96 cut-off events. For 47/47 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 269 event pairs, 7 based on Foata normal form. 3/96 useless extension candidates. Maximal degree in co-relation 220. Up to 48 conditions per place. [2024-02-07 19:31:23,393 INFO L140 encePairwiseOnDemand]: 50/55 looper letters, 26 selfloop transitions, 4 changer transitions 0/40 dead transitions. [2024-02-07 19:31:23,394 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 40 transitions, 177 flow [2024-02-07 19:31:23,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 19:31:23,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 19:31:23,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 97 transitions. [2024-02-07 19:31:23,395 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5878787878787879 [2024-02-07 19:31:23,395 INFO L175 Difference]: Start difference. First operand has 40 places, 35 transitions, 112 flow. Second operand 3 states and 97 transitions. [2024-02-07 19:31:23,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 40 transitions, 177 flow [2024-02-07 19:31:23,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 40 transitions, 167 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-02-07 19:31:23,396 INFO L231 Difference]: Finished difference. Result has 39 places, 33 transitions, 100 flow [2024-02-07 19:31:23,396 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=39, PETRI_TRANSITIONS=33} [2024-02-07 19:31:23,397 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, -12 predicate places. [2024-02-07 19:31:23,397 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 33 transitions, 100 flow [2024-02-07 19:31:23,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:31:23,398 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:31:23,398 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 19:31:23,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-02-07 19:31:23,398 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 14 more)] === [2024-02-07 19:31:23,398 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:31:23,398 INFO L85 PathProgramCache]: Analyzing trace with hash -1574311327, now seen corresponding path program 1 times [2024-02-07 19:31:23,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:31:23,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47364439] [2024-02-07 19:31:23,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:31:23,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:31:23,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-07 19:31:23,438 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-02-07 19:31:23,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-07 19:31:23,478 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-02-07 19:31:23,478 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-02-07 19:31:23,479 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION (16 of 17 remaining) [2024-02-07 19:31:23,482 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (15 of 17 remaining) [2024-02-07 19:31:23,482 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (14 of 17 remaining) [2024-02-07 19:31:23,482 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (13 of 17 remaining) [2024-02-07 19:31:23,482 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (12 of 17 remaining) [2024-02-07 19:31:23,483 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONWITNESS_INVARIANT (11 of 17 remaining) [2024-02-07 19:31:23,483 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONWITNESS_INVARIANT (10 of 17 remaining) [2024-02-07 19:31:23,483 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT (9 of 17 remaining) [2024-02-07 19:31:23,483 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT (8 of 17 remaining) [2024-02-07 19:31:23,486 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 17 remaining) [2024-02-07 19:31:23,486 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION (6 of 17 remaining) [2024-02-07 19:31:23,487 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 17 remaining) [2024-02-07 19:31:23,487 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 17 remaining) [2024-02-07 19:31:23,487 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 17 remaining) [2024-02-07 19:31:23,487 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION (2 of 17 remaining) [2024-02-07 19:31:23,487 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 17 remaining) [2024-02-07 19:31:23,487 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 17 remaining) [2024-02-07 19:31:23,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-02-07 19:31:23,488 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2024-02-07 19:31:23,493 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-02-07 19:31:23,493 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-02-07 19:31:23,517 INFO L503 ceAbstractionStarter]: Automizer considered 11 witness invariants [2024-02-07 19:31:23,517 INFO L504 ceAbstractionStarter]: WitnessConsidered=11 [2024-02-07 19:31:23,518 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.02 07:31:23 BasicIcfg [2024-02-07 19:31:23,518 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-02-07 19:31:23,519 INFO L158 Benchmark]: Toolchain (without parser) took 3013.89ms. Allocated memory was 146.8MB in the beginning and 222.3MB in the end (delta: 75.5MB). Free memory was 87.2MB in the beginning and 175.6MB in the end (delta: -88.4MB). There was no memory consumed. Max. memory is 16.1GB. [2024-02-07 19:31:23,521 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 146.8MB. Free memory is still 114.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-02-07 19:31:23,521 INFO L158 Benchmark]: Witness Parser took 0.41ms. Allocated memory is still 146.8MB. Free memory is still 90.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-02-07 19:31:23,523 INFO L158 Benchmark]: CACSL2BoogieTranslator took 908.88ms. Allocated memory is still 146.8MB. Free memory was 87.2MB in the beginning and 89.2MB in the end (delta: -2.0MB). Peak memory consumption was 57.9MB. Max. memory is 16.1GB. [2024-02-07 19:31:23,523 INFO L158 Benchmark]: Boogie Procedure Inliner took 73.47ms. Allocated memory is still 146.8MB. Free memory was 89.2MB in the beginning and 85.8MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-02-07 19:31:23,523 INFO L158 Benchmark]: Boogie Preprocessor took 55.07ms. Allocated memory is still 146.8MB. Free memory was 85.8MB in the beginning and 81.6MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-02-07 19:31:23,523 INFO L158 Benchmark]: RCFGBuilder took 589.90ms. Allocated memory is still 146.8MB. Free memory was 81.6MB in the beginning and 109.5MB in the end (delta: -27.8MB). Peak memory consumption was 44.4MB. Max. memory is 16.1GB. [2024-02-07 19:31:23,523 INFO L158 Benchmark]: TraceAbstraction took 1380.66ms. Allocated memory was 146.8MB in the beginning and 222.3MB in the end (delta: 75.5MB). Free memory was 108.3MB in the beginning and 175.6MB in the end (delta: -67.3MB). Peak memory consumption was 7.0MB. Max. memory is 16.1GB. [2024-02-07 19:31:23,526 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 146.8MB. Free memory is still 114.4MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.41ms. Allocated memory is still 146.8MB. Free memory is still 90.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 908.88ms. Allocated memory is still 146.8MB. Free memory was 87.2MB in the beginning and 89.2MB in the end (delta: -2.0MB). Peak memory consumption was 57.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 73.47ms. Allocated memory is still 146.8MB. Free memory was 89.2MB in the beginning and 85.8MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 55.07ms. Allocated memory is still 146.8MB. Free memory was 85.8MB in the beginning and 81.6MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 589.90ms. Allocated memory is still 146.8MB. Free memory was 81.6MB in the beginning and 109.5MB in the end (delta: -27.8MB). Peak memory consumption was 44.4MB. Max. memory is 16.1GB. * TraceAbstraction took 1380.66ms. Allocated memory was 146.8MB in the beginning and 222.3MB in the end (delta: 75.5MB). Free memory was 108.3MB in the beginning and 175.6MB in the end (delta: -67.3MB). Peak memory consumption was 7.0MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1695]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L1696] 0 pthread_t t1; [L1696] 0 pthread_t t1; [L1697] 0 pthread_mutex_t mutex; [L1697] 0 pthread_mutex_t mutex; [L1697] 0 pthread_mutex_t mutex; [L1697] 0 pthread_mutex_t mutex; [L1697] 0 pthread_mutex_t mutex; [L1697] 0 pthread_mutex_t mutex; [L1698] 0 int pdev; [L1734] CALL 0 module_init() [L1709] 0 pdev = 1 VAL [mutex={4:0}, pdev=1, t1={3:0}] [L1710] 0 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,IdentifierExpression[pdev],IntegerLiteral[1]]]] [L1710] CALL 0 ldv_assert(pdev==1) [L1695] 0 CodeAnnotStmt[Assertion[BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[expression],IntegerLiteral[1]],BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[expression]],BinaryExpression[COMPLEQ,IdentifierExpression[expression],IntegerLiteral[1]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[expression],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[expression],IntegerLiteral[1]]]]],BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[expression]],BinaryExpression[COMPLEQ,IdentifierExpression[expression],IntegerLiteral[1]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[expression],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[expression],IntegerLiteral[1]]]]]]] VAL [\old(expression)=1, expression=1, mutex={4:0}, pdev=1, t1={3:0}] [L1695] COND FALSE 0 !(!expression) VAL [\old(expression)=1, expression=1, mutex={4:0}, pdev=1, t1={3:0}] [L1710] RET 0 ldv_assert(pdev==1) [L1711] COND TRUE 0 __VERIFIER_nondet_int() [L1712] FCALL, FORK 0 pthread_create(&t1, ((void *)0), thread1, ((void *)0)) VAL [arg={0:0}, mutex={4:0}, pdev=1, t1={3:0}] [L1714] 0 pdev = 2 [L1715] 0 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[pdev]],BinaryExpression[COMPLEQ,IntegerLiteral[1],IdentifierExpression[pdev]]],BinaryExpression[COMPLEQ,IdentifierExpression[pdev],IntegerLiteral[6]]],BinaryExpression[COMPLEQ,IdentifierExpression[pdev],IntegerLiteral[127]]],BinaryExpression[COMPNEQ,IdentifierExpression[pdev],IntegerLiteral[0]]],BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[pdev],IntegerLiteral[1]],BinaryExpression[COMPEQ,IdentifierExpression[pdev],IntegerLiteral[2]]],BinaryExpression[COMPEQ,IdentifierExpression[pdev],IntegerLiteral[5]]],BinaryExpression[COMPEQ,IdentifierExpression[pdev],IntegerLiteral[6]]]]]] VAL [arg={0:0}, arg={0:0}, mutex={4:0}, pdev=2, t1={3:0}] [L1702] 1 pdev = 6 [L1703] 1 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[pdev]],BinaryExpression[COMPLEQ,IntegerLiteral[1],IdentifierExpression[pdev]]],BinaryExpression[COMPLEQ,IdentifierExpression[pdev],IntegerLiteral[6]]],BinaryExpression[COMPLEQ,IdentifierExpression[pdev],IntegerLiteral[127]]],BinaryExpression[COMPNEQ,IdentifierExpression[pdev],IntegerLiteral[0]]],BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[pdev],IntegerLiteral[1]],BinaryExpression[COMPEQ,IdentifierExpression[pdev],IntegerLiteral[2]]],BinaryExpression[COMPEQ,IdentifierExpression[pdev],IntegerLiteral[5]]],BinaryExpression[COMPEQ,IdentifierExpression[pdev],IntegerLiteral[6]]]]]] VAL [arg={0:0}, arg={0:0}, mutex={4:0}, pdev=6, t1={3:0}] [L1717] 0 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[pdev]],BinaryExpression[COMPLEQ,IntegerLiteral[1],IdentifierExpression[pdev]]],BinaryExpression[COMPLEQ,IdentifierExpression[pdev],IntegerLiteral[6]]],BinaryExpression[COMPLEQ,IdentifierExpression[pdev],IntegerLiteral[127]]],BinaryExpression[COMPNEQ,IdentifierExpression[pdev],IntegerLiteral[0]]],BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[pdev],IntegerLiteral[1]],BinaryExpression[COMPEQ,IdentifierExpression[pdev],IntegerLiteral[2]]],BinaryExpression[COMPEQ,IdentifierExpression[pdev],IntegerLiteral[5]]],BinaryExpression[COMPEQ,IdentifierExpression[pdev],IntegerLiteral[6]]]]]] [L1717] CALL 0 ldv_assert(pdev==2) [L1695] 0 CodeAnnotStmt[Assertion[BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[expression],IntegerLiteral[1]],BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[expression]],BinaryExpression[COMPLEQ,IdentifierExpression[expression],IntegerLiteral[1]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[expression],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[expression],IntegerLiteral[1]]]]],BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[expression]],BinaryExpression[COMPLEQ,IdentifierExpression[expression],IntegerLiteral[1]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[expression],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[expression],IntegerLiteral[1]]]]]]] [L1695] COND TRUE 0 !expression [L1695] 0 reach_error() VAL [\old(expression)=0, arg={0:0}, arg={0:0}, expression=0, mutex={4:0}, pdev=6, t1={3:0}] - UnprovableResult [Line: 1703]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 1710]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 1695]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 1695]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1722]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 1695]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 1715]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 1717]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 1695]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 1695]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1729]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 1731]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 1695]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 1695]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1712]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 60 locations, 17 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 1.3s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 104 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 65 mSDsluCounter, 16 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 15 mSDsCounter, 22 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 284 IncrementalHoareTripleChecker+Invalid, 306 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 22 mSolverCounterUnsat, 1 mSDtfsCounter, 284 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=112occurred in iteration=4, InterpolantAutomatonStates: 17, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 50 NumberOfCodeBlocks, 50 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 31 ConstructedInterpolants, 0 QuantifiedInterpolants, 43 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2024-02-07 19:31:23,548 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE