./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread/lazy01.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-05-07_14-17-48.files/protection/lazy01.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b44c8288 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread/lazy01.i ./goblint.2024-05-07_14-17-48.files/protection/lazy01.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.witness-ghost-b44c828-m [2024-05-12 12:56:52,374 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-05-12 12:56:52,456 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-05-12 12:56:52,460 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-05-12 12:56:52,461 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-05-12 12:56:52,491 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-05-12 12:56:52,493 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-05-12 12:56:52,493 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-05-12 12:56:52,494 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-05-12 12:56:52,498 INFO L153 SettingsManager]: * Use memory slicer=true [2024-05-12 12:56:52,498 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-05-12 12:56:52,498 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-05-12 12:56:52,499 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-05-12 12:56:52,500 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-05-12 12:56:52,500 INFO L153 SettingsManager]: * Use SBE=true [2024-05-12 12:56:52,501 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-05-12 12:56:52,501 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-05-12 12:56:52,501 INFO L153 SettingsManager]: * sizeof long=4 [2024-05-12 12:56:52,502 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-05-12 12:56:52,502 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-05-12 12:56:52,502 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-05-12 12:56:52,502 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-05-12 12:56:52,503 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-05-12 12:56:52,503 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-05-12 12:56:52,503 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-05-12 12:56:52,503 INFO L153 SettingsManager]: * sizeof long double=12 [2024-05-12 12:56:52,504 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-05-12 12:56:52,504 INFO L153 SettingsManager]: * Use constant arrays=true [2024-05-12 12:56:52,505 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-05-12 12:56:52,505 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-05-12 12:56:52,506 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-05-12 12:56:52,506 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-05-12 12:56:52,506 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-05-12 12:56:52,506 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-05-12 12:56:52,507 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-05-12 12:56:52,507 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-05-12 12:56:52,507 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-05-12 12:56:52,507 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-05-12 12:56:52,507 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-05-12 12:56:52,508 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-05-12 12:56:52,508 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-05-12 12:56:52,508 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-05-12 12:56:52,508 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-05-12 12:56:52,509 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-05-12 12:56:52,743 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-05-12 12:56:52,765 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-05-12 12:56:52,767 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-05-12 12:56:52,769 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-05-12 12:56:52,769 INFO L274 PluginConnector]: Witness Parser initialized [2024-05-12 12:56:52,771 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-07_14-17-48.files/protection/lazy01.yml/witness.yml [2024-05-12 12:56:52,880 INFO L270 PluginConnector]: Initializing CDTParser... [2024-05-12 12:56:52,880 INFO L274 PluginConnector]: CDTParser initialized [2024-05-12 12:56:52,881 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/lazy01.i [2024-05-12 12:56:54,062 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-05-12 12:56:54,344 INFO L384 CDTParser]: Found 1 translation units. [2024-05-12 12:56:54,345 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/lazy01.i [2024-05-12 12:56:54,366 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f16c43208/e0ad181a662b4a71abd77842e6490672/FLAG701a2d356 [2024-05-12 12:56:54,379 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f16c43208/e0ad181a662b4a71abd77842e6490672 [2024-05-12 12:56:54,379 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-05-12 12:56:54,381 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-05-12 12:56:54,382 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-05-12 12:56:54,382 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-05-12 12:56:54,394 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-05-12 12:56:54,394 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 12:56:52" (1/2) ... [2024-05-12 12:56:54,395 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@749ad4f1 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 12:56:54, skipping insertion in model container [2024-05-12 12:56:54,395 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 12:56:52" (1/2) ... [2024-05-12 12:56:54,396 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1a38e246 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 12:56:54, skipping insertion in model container [2024-05-12 12:56:54,397 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.05 12:56:54" (2/2) ... [2024-05-12 12:56:54,397 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@749ad4f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:56:54, skipping insertion in model container [2024-05-12 12:56:54,397 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.05 12:56:54" (2/2) ... [2024-05-12 12:56:54,397 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-05-12 12:56:54,431 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-05-12 12:56:54,432 INFO L97 edCorrectnessWitness]: Location invariant before [L734-L734] ! multithreaded || 0 <= data [2024-05-12 12:56:54,432 INFO L97 edCorrectnessWitness]: Location invariant before [L733-L733] ! multithreaded || 0 <= data [2024-05-12 12:56:54,432 INFO L97 edCorrectnessWitness]: Location invariant before [L735-L735] ! multithreaded || 0 <= data [2024-05-12 12:56:54,433 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-05-12 12:56:54,433 INFO L103 edCorrectnessWitness]: ghost_variable mutex_locked = 0 [2024-05-12 12:56:54,433 INFO L106 edCorrectnessWitness]: ghost_update [L708-L708] mutex_locked = 0; [2024-05-12 12:56:54,433 INFO L106 edCorrectnessWitness]: ghost_update [L725-L725] mutex_locked = 0; [2024-05-12 12:56:54,433 INFO L106 edCorrectnessWitness]: ghost_update [L715-L715] mutex_locked = 0; [2024-05-12 12:56:54,433 INFO L106 edCorrectnessWitness]: ghost_update [L713-L713] mutex_locked = 1; [2024-05-12 12:56:54,434 INFO L106 edCorrectnessWitness]: ghost_update [L732-L732] multithreaded = 1; [2024-05-12 12:56:54,434 INFO L106 edCorrectnessWitness]: ghost_update [L706-L706] mutex_locked = 1; [2024-05-12 12:56:54,434 INFO L106 edCorrectnessWitness]: ghost_update [L720-L720] mutex_locked = 1; [2024-05-12 12:56:54,475 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-05-12 12:56:54,809 WARN L246 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/lazy01.i[31042,31055] [2024-05-12 12:56:54,822 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-05-12 12:56:54,833 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-05-12 12:56:54,939 WARN L246 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/lazy01.i[31042,31055] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-05-12 12:56:54,953 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-05-12 12:56:54,994 INFO L206 MainTranslator]: Completed translation [2024-05-12 12:56:54,995 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:56:54 WrapperNode [2024-05-12 12:56:54,996 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-05-12 12:56:54,997 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-05-12 12:56:54,997 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-05-12 12:56:54,997 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-05-12 12:56:55,004 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:56:54" (1/1) ... [2024-05-12 12:56:55,032 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:56:54" (1/1) ... [2024-05-12 12:56:55,060 INFO L138 Inliner]: procedures = 170, calls = 36, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 68 [2024-05-12 12:56:55,062 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-05-12 12:56:55,063 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-05-12 12:56:55,063 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-05-12 12:56:55,063 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-05-12 12:56:55,072 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:56:54" (1/1) ... [2024-05-12 12:56:55,072 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:56:54" (1/1) ... [2024-05-12 12:56:55,085 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:56:54" (1/1) ... [2024-05-12 12:56:55,113 INFO L175 MemorySlicer]: Split 13 memory accesses to 5 slices as follows [2, 5, 2, 2, 2]. 38 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 5, 0, 0, 0]. The 3 writes are split as follows [0, 0, 1, 1, 1]. [2024-05-12 12:56:55,115 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:56:54" (1/1) ... [2024-05-12 12:56:55,115 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:56:54" (1/1) ... [2024-05-12 12:56:55,126 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:56:54" (1/1) ... [2024-05-12 12:56:55,130 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:56:54" (1/1) ... [2024-05-12 12:56:55,139 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:56:54" (1/1) ... [2024-05-12 12:56:55,141 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:56:54" (1/1) ... [2024-05-12 12:56:55,143 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-05-12 12:56:55,147 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-05-12 12:56:55,147 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-05-12 12:56:55,148 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-05-12 12:56:55,149 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:56:54" (1/1) ... [2024-05-12 12:56:55,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-05-12 12:56:55,163 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-05-12 12:56:55,182 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) [2024-05-12 12:56:55,189 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 [2024-05-12 12:56:55,218 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-05-12 12:56:55,218 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-05-12 12:56:55,219 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-05-12 12:56:55,219 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-05-12 12:56:55,220 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-05-12 12:56:55,220 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-05-12 12:56:55,221 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-05-12 12:56:55,222 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-05-12 12:56:55,222 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-05-12 12:56:55,222 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-05-12 12:56:55,223 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-05-12 12:56:55,223 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-05-12 12:56:55,223 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-05-12 12:56:55,223 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-05-12 12:56:55,223 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-05-12 12:56:55,223 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-05-12 12:56:55,223 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-05-12 12:56:55,224 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-05-12 12:56:55,224 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-05-12 12:56:55,224 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-05-12 12:56:55,224 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-05-12 12:56:55,224 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-05-12 12:56:55,224 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-05-12 12:56:55,224 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-05-12 12:56:55,225 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-05-12 12:56:55,225 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-05-12 12:56:55,225 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-05-12 12:56:55,225 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-05-12 12:56:55,227 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-05-12 12:56:55,392 INFO L244 CfgBuilder]: Building ICFG [2024-05-12 12:56:55,393 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-05-12 12:56:55,550 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-05-12 12:56:55,551 INFO L293 CfgBuilder]: Performing block encoding [2024-05-12 12:56:55,676 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-05-12 12:56:55,676 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-05-12 12:56:55,676 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.05 12:56:55 BoogieIcfgContainer [2024-05-12 12:56:55,677 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-05-12 12:56:55,679 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-05-12 12:56:55,679 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-05-12 12:56:55,682 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-05-12 12:56:55,682 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 12:56:52" (1/4) ... [2024-05-12 12:56:55,698 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e1b4d04 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 12.05 12:56:55, skipping insertion in model container [2024-05-12 12:56:55,699 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.05 12:56:54" (2/4) ... [2024-05-12 12:56:55,700 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e1b4d04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.05 12:56:55, skipping insertion in model container [2024-05-12 12:56:55,700 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:56:54" (3/4) ... [2024-05-12 12:56:55,701 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e1b4d04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.05 12:56:55, skipping insertion in model container [2024-05-12 12:56:55,701 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.05 12:56:55" (4/4) ... [2024-05-12 12:56:55,702 INFO L112 eAbstractionObserver]: Analyzing ICFG lazy01.i [2024-05-12 12:56:55,721 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-05-12 12:56:55,721 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-05-12 12:56:55,721 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-05-12 12:56:55,779 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-05-12 12:56:55,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 52 places, 43 transitions, 107 flow [2024-05-12 12:56:55,834 INFO L124 PetriNetUnfolderBase]: 1/40 cut-off events. [2024-05-12 12:56:55,835 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-05-12 12:56:55,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53 conditions, 40 events. 1/40 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 58 event pairs, 0 based on Foata normal form. 0/35 useless extension candidates. Maximal degree in co-relation 34. Up to 2 conditions per place. [2024-05-12 12:56:55,838 INFO L82 GeneralOperation]: Start removeDead. Operand has 52 places, 43 transitions, 107 flow [2024-05-12 12:56:55,841 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 47 places, 38 transitions, 91 flow [2024-05-12 12:56:55,850 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-05-12 12:56:55,857 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;@72056775, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-05-12 12:56:55,857 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-05-12 12:56:55,861 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-05-12 12:56:55,862 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-05-12 12:56:55,862 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-05-12 12:56:55,862 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:56:55,863 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-05-12 12:56:55,863 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-05-12 12:56:55,868 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:56:55,869 INFO L85 PathProgramCache]: Analyzing trace with hash -1274751012, now seen corresponding path program 1 times [2024-05-12 12:56:55,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:56:55,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547343128] [2024-05-12 12:56:55,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:56:55,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:56:55,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:56:56,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:56:56,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:56:56,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547343128] [2024-05-12 12:56:56,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547343128] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:56:56,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:56:56,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-05-12 12:56:56,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967381433] [2024-05-12 12:56:56,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:56:56,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-05-12 12:56:56,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:56:56,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-05-12 12:56:56,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-05-12 12:56:56,250 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 43 [2024-05-12 12:56:56,256 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 38 transitions, 91 flow. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:56:56,256 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:56:56,256 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 43 [2024-05-12 12:56:56,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:56:56,690 INFO L124 PetriNetUnfolderBase]: 1242/1986 cut-off events. [2024-05-12 12:56:56,690 INFO L125 PetriNetUnfolderBase]: For 88/88 co-relation queries the response was YES. [2024-05-12 12:56:56,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3970 conditions, 1986 events. 1242/1986 cut-off events. For 88/88 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 10835 event pairs, 446 based on Foata normal form. 104/1934 useless extension candidates. Maximal degree in co-relation 3629. Up to 1735 conditions per place. [2024-05-12 12:56:56,708 INFO L140 encePairwiseOnDemand]: 35/43 looper letters, 43 selfloop transitions, 3 changer transitions 0/52 dead transitions. [2024-05-12 12:56:56,708 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 52 transitions, 217 flow [2024-05-12 12:56:56,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-05-12 12:56:56,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-05-12 12:56:56,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 78 transitions. [2024-05-12 12:56:56,761 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6046511627906976 [2024-05-12 12:56:56,762 INFO L175 Difference]: Start difference. First operand has 47 places, 38 transitions, 91 flow. Second operand 3 states and 78 transitions. [2024-05-12 12:56:56,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 52 transitions, 217 flow [2024-05-12 12:56:56,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 52 transitions, 205 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-05-12 12:56:56,773 INFO L231 Difference]: Finished difference. Result has 45 places, 39 transitions, 105 flow [2024-05-12 12:56:56,775 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=105, PETRI_PLACES=45, PETRI_TRANSITIONS=39} [2024-05-12 12:56:56,778 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, -2 predicate places. [2024-05-12 12:56:56,779 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 39 transitions, 105 flow [2024-05-12 12:56:56,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:56:56,779 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:56:56,779 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:56:56,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-05-12 12:56:56,780 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-05-12 12:56:56,780 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:56:56,781 INFO L85 PathProgramCache]: Analyzing trace with hash 15200812, now seen corresponding path program 1 times [2024-05-12 12:56:56,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:56:56,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517557783] [2024-05-12 12:56:56,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:56:56,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:56:56,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:56:56,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:56:56,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:56:56,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517557783] [2024-05-12 12:56:56,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517557783] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:56:56,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:56:56,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-05-12 12:56:56,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781920405] [2024-05-12 12:56:56,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:56:56,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-05-12 12:56:56,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:56:56,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-05-12 12:56:56,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-05-12 12:56:56,886 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 43 [2024-05-12 12:56:56,887 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 39 transitions, 105 flow. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:56:56,887 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:56:56,888 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 43 [2024-05-12 12:56:56,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:56:57,095 INFO L124 PetriNetUnfolderBase]: 964/1558 cut-off events. [2024-05-12 12:56:57,096 INFO L125 PetriNetUnfolderBase]: For 277/287 co-relation queries the response was YES. [2024-05-12 12:56:57,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3418 conditions, 1558 events. 964/1558 cut-off events. For 277/287 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 8205 event pairs, 285 based on Foata normal form. 132/1663 useless extension candidates. Maximal degree in co-relation 1893. Up to 1327 conditions per place. [2024-05-12 12:56:57,106 INFO L140 encePairwiseOnDemand]: 37/43 looper letters, 36 selfloop transitions, 3 changer transitions 4/49 dead transitions. [2024-05-12 12:56:57,106 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 49 transitions, 208 flow [2024-05-12 12:56:57,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-05-12 12:56:57,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-05-12 12:56:57,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 82 transitions. [2024-05-12 12:56:57,112 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47674418604651164 [2024-05-12 12:56:57,112 INFO L175 Difference]: Start difference. First operand has 45 places, 39 transitions, 105 flow. Second operand 4 states and 82 transitions. [2024-05-12 12:56:57,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 49 transitions, 208 flow [2024-05-12 12:56:57,114 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 49 transitions, 205 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-05-12 12:56:57,116 INFO L231 Difference]: Finished difference. Result has 44 places, 34 transitions, 92 flow [2024-05-12 12:56:57,117 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=92, PETRI_PLACES=44, PETRI_TRANSITIONS=34} [2024-05-12 12:56:57,117 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, -3 predicate places. [2024-05-12 12:56:57,117 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 34 transitions, 92 flow [2024-05-12 12:56:57,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:56:57,118 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:56:57,118 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:56:57,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-05-12 12:56:57,119 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread3Err0ASSERT_VIOLATIONERROR_FUNCTION === [thread3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-05-12 12:56:57,122 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:56:57,122 INFO L85 PathProgramCache]: Analyzing trace with hash -1587304426, now seen corresponding path program 1 times [2024-05-12 12:56:57,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:56:57,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397746643] [2024-05-12 12:56:57,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:56:57,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:56:57,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:56:57,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:56:57,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:56:57,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397746643] [2024-05-12 12:56:57,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397746643] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:56:57,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:56:57,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-05-12 12:56:57,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607761407] [2024-05-12 12:56:57,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:56:57,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-05-12 12:56:57,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:56:57,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-05-12 12:56:57,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-05-12 12:56:57,306 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 43 [2024-05-12 12:56:57,306 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 34 transitions, 92 flow. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:56:57,306 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:56:57,307 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 43 [2024-05-12 12:56:57,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:56:57,433 INFO L124 PetriNetUnfolderBase]: 214/548 cut-off events. [2024-05-12 12:56:57,434 INFO L125 PetriNetUnfolderBase]: For 22/22 co-relation queries the response was YES. [2024-05-12 12:56:57,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1095 conditions, 548 events. 214/548 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2761 event pairs, 62 based on Foata normal form. 84/623 useless extension candidates. Maximal degree in co-relation 615. Up to 257 conditions per place. [2024-05-12 12:56:57,438 INFO L140 encePairwiseOnDemand]: 38/43 looper letters, 36 selfloop transitions, 5 changer transitions 0/48 dead transitions. [2024-05-12 12:56:57,438 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 48 transitions, 207 flow [2024-05-12 12:56:57,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-05-12 12:56:57,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-05-12 12:56:57,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 81 transitions. [2024-05-12 12:56:57,441 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.627906976744186 [2024-05-12 12:56:57,442 INFO L175 Difference]: Start difference. First operand has 44 places, 34 transitions, 92 flow. Second operand 3 states and 81 transitions. [2024-05-12 12:56:57,442 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 48 transitions, 207 flow [2024-05-12 12:56:57,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 48 transitions, 203 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-05-12 12:56:57,444 INFO L231 Difference]: Finished difference. Result has 42 places, 34 transitions, 98 flow [2024-05-12 12:56:57,444 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=42, PETRI_TRANSITIONS=34} [2024-05-12 12:56:57,445 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, -5 predicate places. [2024-05-12 12:56:57,446 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 34 transitions, 98 flow [2024-05-12 12:56:57,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:56:57,446 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:56:57,447 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:56:57,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-05-12 12:56:57,448 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread3Err0ASSERT_VIOLATIONERROR_FUNCTION === [thread3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-05-12 12:56:57,449 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:56:57,449 INFO L85 PathProgramCache]: Analyzing trace with hash -1616176446, now seen corresponding path program 1 times [2024-05-12 12:56:57,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:56:57,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654087410] [2024-05-12 12:56:57,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:56:57,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:56:57,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:56:57,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:56:57,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:56:57,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654087410] [2024-05-12 12:56:57,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654087410] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:56:57,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:56:57,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-05-12 12:56:57,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594546565] [2024-05-12 12:56:57,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:56:57,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-05-12 12:56:57,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:56:57,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-05-12 12:56:57,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-05-12 12:56:57,583 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 43 [2024-05-12 12:56:57,584 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 34 transitions, 98 flow. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:56:57,584 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:56:57,584 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 43 [2024-05-12 12:56:57,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:56:57,684 INFO L124 PetriNetUnfolderBase]: 249/550 cut-off events. [2024-05-12 12:56:57,685 INFO L125 PetriNetUnfolderBase]: For 114/114 co-relation queries the response was YES. [2024-05-12 12:56:57,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1264 conditions, 550 events. 249/550 cut-off events. For 114/114 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 2575 event pairs, 66 based on Foata normal form. 8/555 useless extension candidates. Maximal degree in co-relation 535. Up to 318 conditions per place. [2024-05-12 12:56:57,688 INFO L140 encePairwiseOnDemand]: 39/43 looper letters, 43 selfloop transitions, 4 changer transitions 2/55 dead transitions. [2024-05-12 12:56:57,688 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 55 transitions, 254 flow [2024-05-12 12:56:57,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-05-12 12:56:57,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-05-12 12:56:57,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 86 transitions. [2024-05-12 12:56:57,692 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-05-12 12:56:57,694 INFO L175 Difference]: Start difference. First operand has 42 places, 34 transitions, 98 flow. Second operand 4 states and 86 transitions. [2024-05-12 12:56:57,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 55 transitions, 254 flow [2024-05-12 12:56:57,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 55 transitions, 244 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-05-12 12:56:57,697 INFO L231 Difference]: Finished difference. Result has 45 places, 34 transitions, 105 flow [2024-05-12 12:56:57,697 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=93, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=105, PETRI_PLACES=45, PETRI_TRANSITIONS=34} [2024-05-12 12:56:57,699 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, -2 predicate places. [2024-05-12 12:56:57,699 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 34 transitions, 105 flow [2024-05-12 12:56:57,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:56:57,700 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:56:57,700 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:56:57,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-05-12 12:56:57,701 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread3Err0ASSERT_VIOLATIONERROR_FUNCTION === [thread3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-05-12 12:56:57,701 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:56:57,701 INFO L85 PathProgramCache]: Analyzing trace with hash 1557452320, now seen corresponding path program 1 times [2024-05-12 12:56:57,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:56:57,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510316554] [2024-05-12 12:56:57,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:56:57,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:56:57,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:56:57,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:56:57,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:56:57,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510316554] [2024-05-12 12:56:57,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510316554] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:56:57,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:56:57,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-05-12 12:56:57,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448985437] [2024-05-12 12:56:57,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:56:57,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-05-12 12:56:57,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:56:57,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-05-12 12:56:57,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-05-12 12:56:57,806 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 43 [2024-05-12 12:56:57,806 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 34 transitions, 105 flow. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:56:57,806 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:56:57,806 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 43 [2024-05-12 12:56:57,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:56:57,919 INFO L124 PetriNetUnfolderBase]: 288/583 cut-off events. [2024-05-12 12:56:57,920 INFO L125 PetriNetUnfolderBase]: For 227/227 co-relation queries the response was YES. [2024-05-12 12:56:57,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1347 conditions, 583 events. 288/583 cut-off events. For 227/227 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 2562 event pairs, 77 based on Foata normal form. 6/585 useless extension candidates. Maximal degree in co-relation 642. Up to 252 conditions per place. [2024-05-12 12:56:57,924 INFO L140 encePairwiseOnDemand]: 38/43 looper letters, 44 selfloop transitions, 5 changer transitions 7/61 dead transitions. [2024-05-12 12:56:57,925 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 61 transitions, 284 flow [2024-05-12 12:56:57,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-05-12 12:56:57,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-05-12 12:56:57,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 89 transitions. [2024-05-12 12:56:57,927 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5174418604651163 [2024-05-12 12:56:57,927 INFO L175 Difference]: Start difference. First operand has 45 places, 34 transitions, 105 flow. Second operand 4 states and 89 transitions. [2024-05-12 12:56:57,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 61 transitions, 284 flow [2024-05-12 12:56:57,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 61 transitions, 276 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-05-12 12:56:57,931 INFO L231 Difference]: Finished difference. Result has 47 places, 33 transitions, 111 flow [2024-05-12 12:56:57,931 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=97, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=111, PETRI_PLACES=47, PETRI_TRANSITIONS=33} [2024-05-12 12:56:57,933 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 0 predicate places. [2024-05-12 12:56:57,933 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 33 transitions, 111 flow [2024-05-12 12:56:57,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:56:57,934 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:56:57,934 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] [2024-05-12 12:56:57,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-05-12 12:56:57,934 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread3Err0ASSERT_VIOLATIONERROR_FUNCTION === [thread3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-05-12 12:56:57,935 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:56:57,935 INFO L85 PathProgramCache]: Analyzing trace with hash -1531939606, now seen corresponding path program 1 times [2024-05-12 12:56:57,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:56:57,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11812239] [2024-05-12 12:56:57,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:56:57,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:56:57,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-05-12 12:56:57,970 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-05-12 12:56:57,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-05-12 12:56:58,020 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-05-12 12:56:58,021 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-05-12 12:56:58,022 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location thread3Err0ASSERT_VIOLATIONERROR_FUNCTION (7 of 8 remaining) [2024-05-12 12:56:58,023 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err0ASSERT_VIOLATIONERROR_FUNCTION (6 of 8 remaining) [2024-05-12 12:56:58,024 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 8 remaining) [2024-05-12 12:56:58,028 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 8 remaining) [2024-05-12 12:56:58,028 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 8 remaining) [2024-05-12 12:56:58,028 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 8 remaining) [2024-05-12 12:56:58,028 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 8 remaining) [2024-05-12 12:56:58,029 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 8 remaining) [2024-05-12 12:56:58,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-05-12 12:56:58,029 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2024-05-12 12:56:58,035 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-05-12 12:56:58,036 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-05-12 12:56:58,088 INFO L507 ceAbstractionStarter]: Automizer considered 3 witness invariants [2024-05-12 12:56:58,088 INFO L508 ceAbstractionStarter]: WitnessConsidered=3 [2024-05-12 12:56:58,089 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.05 12:56:58 BasicIcfg [2024-05-12 12:56:58,089 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-05-12 12:56:58,092 INFO L158 Benchmark]: Toolchain (without parser) took 3708.98ms. Allocated memory was 172.0MB in the beginning and 209.7MB in the end (delta: 37.7MB). Free memory was 138.7MB in the beginning and 63.5MB in the end (delta: 75.2MB). Peak memory consumption was 114.6MB. Max. memory is 16.1GB. [2024-05-12 12:56:58,093 INFO L158 Benchmark]: Witness Parser took 0.20ms. Allocated memory is still 96.5MB. Free memory was 40.7MB in the beginning and 40.6MB in the end (delta: 142.6kB). There was no memory consumed. Max. memory is 16.1GB. [2024-05-12 12:56:58,093 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 96.5MB. Free memory is still 37.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-05-12 12:56:58,093 INFO L158 Benchmark]: CACSL2BoogieTranslator took 614.21ms. Allocated memory is still 172.0MB. Free memory was 138.7MB in the beginning and 112.2MB in the end (delta: 26.4MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-05-12 12:56:58,093 INFO L158 Benchmark]: Boogie Procedure Inliner took 65.70ms. Allocated memory is still 172.0MB. Free memory was 112.2MB in the beginning and 110.0MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-05-12 12:56:58,094 INFO L158 Benchmark]: Boogie Preprocessor took 83.39ms. Allocated memory is still 172.0MB. Free memory was 110.0MB in the beginning and 108.0MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-05-12 12:56:58,094 INFO L158 Benchmark]: RCFGBuilder took 529.83ms. Allocated memory is still 172.0MB. Free memory was 108.0MB in the beginning and 81.4MB in the end (delta: 26.6MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2024-05-12 12:56:58,094 INFO L158 Benchmark]: TraceAbstraction took 2410.45ms. Allocated memory was 172.0MB in the beginning and 209.7MB in the end (delta: 37.7MB). Free memory was 80.8MB in the beginning and 63.5MB in the end (delta: 17.3MB). Peak memory consumption was 58.0MB. Max. memory is 16.1GB. [2024-05-12 12:56:58,097 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Witness Parser took 0.20ms. Allocated memory is still 96.5MB. Free memory was 40.7MB in the beginning and 40.6MB in the end (delta: 142.6kB). There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.10ms. Allocated memory is still 96.5MB. Free memory is still 37.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 614.21ms. Allocated memory is still 172.0MB. Free memory was 138.7MB in the beginning and 112.2MB in the end (delta: 26.4MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 65.70ms. Allocated memory is still 172.0MB. Free memory was 112.2MB in the beginning and 110.0MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 83.39ms. Allocated memory is still 172.0MB. Free memory was 110.0MB in the beginning and 108.0MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 529.83ms. Allocated memory is still 172.0MB. Free memory was 108.0MB in the beginning and 81.4MB in the end (delta: 26.6MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * TraceAbstraction took 2410.45ms. Allocated memory was 172.0MB in the beginning and 209.7MB in the end (delta: 37.7MB). Free memory was 80.8MB in the beginning and 63.5MB in the end (delta: 17.3MB). Peak memory consumption was 58.0MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 722]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L1] 0 //@ ghost int multithreaded = 0; [L1] 0 //@ ghost int mutex_locked = 0; [L702] 0 pthread_mutex_t mutex; [L702] 0 pthread_mutex_t mutex; [L702] 0 pthread_mutex_t mutex; [L702] 0 pthread_mutex_t mutex; [L702] 0 pthread_mutex_t mutex; [L702] 0 pthread_mutex_t mutex; [L703] 0 int data = 0; [L731] 0 pthread_t t1, t2, t3; VAL [data=0, mutex={3:0}, t1={7:0}, t2={6:0}, t3={5:0}] [L732] 0 //@ ghost multithreaded = 1; [L732] FCALL, FORK 0 pthread_create(&t1, 0, thread1, 0) VAL [\old(arg)={0:0}, data=0, mutex={3:0}, t1={7:0}, t2={6:0}, t3={5:0}] [L706] 1 //@ ghost mutex_locked = 1; [L733] 0 //@ assert (!multithreaded || (0 <= data)); [L733] FCALL, FORK 0 pthread_create(&t2, 0, thread2, 0) VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, data=0, mutex={3:0}, t1={7:0}, t2={6:0}, t3={5:0}] [L734] 0 //@ assert (!multithreaded || (0 <= data)); [L734] FCALL, FORK 0 pthread_create(&t3, 0, thread3, 0) VAL [\old(arg)={0:0}, \old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, data=0, mutex={3:0}, t1={7:0}, t2={6:0}, t3={5:0}] [L707] 1 data++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, data=1, mutex={3:0}] [L708] 1 //@ ghost mutex_locked = 0; [L713] 2 //@ ghost mutex_locked = 1; [L714] 2 data+=2 VAL [\old(arg)={0:0}, \old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data=3, mutex={3:0}] [L715] 2 //@ ghost mutex_locked = 0; [L720] 3 //@ ghost mutex_locked = 1; [L721] COND TRUE 3 data >= 3 VAL [\old(arg)={0:0}, \old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data=3, mutex={3:0}] [L722] 3 reach_error() VAL [\old(arg)={0:0}, \old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data=3, mutex={3:0}] - UnprovableResult [Line: 733]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 734]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 735]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 732]: 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. - UnprovableResult [Line: 733]: 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. - UnprovableResult [Line: 734]: 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 7 procedures, 67 locations, 8 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: 2.2s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 143 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 119 mSDsluCounter, 11 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 24 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 356 IncrementalHoareTripleChecker+Invalid, 380 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 24 mSolverCounterUnsat, 11 mSDtfsCounter, 356 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=111occurred in iteration=5, InterpolantAutomatonStates: 18, 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, 0.5s InterpolantComputationTime, 94 NumberOfCodeBlocks, 94 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 66 ConstructedInterpolants, 0 QuantifiedInterpolants, 208 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! [2024-05-12 12:56:58,140 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, 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