/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.order.of.the.error.locations.to.be.checked PROGRAM_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-atomic/peterson.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-24 11:14:49,991 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-24 11:14:50,038 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-24 11:14:50,042 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-24 11:14:50,042 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-24 11:14:50,062 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-24 11:14:50,062 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-24 11:14:50,062 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-24 11:14:50,063 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-24 11:14:50,063 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-24 11:14:50,064 INFO L153 SettingsManager]: * Use SBE=true [2023-08-24 11:14:50,064 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-24 11:14:50,064 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-24 11:14:50,065 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-24 11:14:50,065 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-24 11:14:50,065 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-24 11:14:50,066 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-24 11:14:50,066 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-24 11:14:50,066 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-24 11:14:50,066 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-24 11:14:50,067 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-24 11:14:50,067 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-24 11:14:50,067 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-24 11:14:50,068 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-24 11:14:50,068 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-24 11:14:50,069 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-24 11:14:50,069 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-24 11:14:50,069 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 11:14:50,070 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-24 11:14:50,070 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-24 11:14:50,070 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-24 11:14:50,070 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-24 11:14:50,071 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-24 11:14:50,071 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-24 11:14:50,071 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-24 11:14:50,072 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST [2023-08-24 11:14:50,378 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-24 11:14:50,395 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-24 11:14:50,397 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-24 11:14:50,398 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-24 11:14:50,399 INFO L274 PluginConnector]: CDTParser initialized [2023-08-24 11:14:50,405 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/peterson.i [2023-08-24 11:14:51,591 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-24 11:14:51,856 INFO L384 CDTParser]: Found 1 translation units. [2023-08-24 11:14:51,856 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/peterson.i [2023-08-24 11:14:51,868 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac48cd86f/4071f0771e2b44ff8d1fdd6aa7aec559/FLAG000990cb8 [2023-08-24 11:14:51,877 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac48cd86f/4071f0771e2b44ff8d1fdd6aa7aec559 [2023-08-24 11:14:51,879 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-24 11:14:51,880 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-24 11:14:51,881 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-24 11:14:51,881 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-24 11:14:51,884 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-24 11:14:51,884 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 11:14:51" (1/1) ... [2023-08-24 11:14:51,885 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74f9f729 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:14:51, skipping insertion in model container [2023-08-24 11:14:51,885 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 11:14:51" (1/1) ... [2023-08-24 11:14:51,925 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-24 11:14:52,095 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-08-24 11:14:52,240 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/peterson.i[30997,31010] [2023-08-24 11:14:52,245 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/peterson.i[31682,31695] [2023-08-24 11:14:52,251 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 11:14:52,260 INFO L201 MainTranslator]: Completed pre-run [2023-08-24 11:14:52,279 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-08-24 11:14:52,295 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [265] [2023-08-24 11:14:52,297 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [265] [2023-08-24 11:14:52,305 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/peterson.i[30997,31010] [2023-08-24 11:14:52,307 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/peterson.i[31682,31695] [2023-08-24 11:14:52,314 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 11:14:52,347 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-24 11:14:52,347 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-24 11:14:52,347 WARN L669 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-08-24 11:14:52,353 INFO L206 MainTranslator]: Completed translation [2023-08-24 11:14:52,353 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:14:52 WrapperNode [2023-08-24 11:14:52,353 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-24 11:14:52,354 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-24 11:14:52,354 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-24 11:14:52,354 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-24 11:14:52,360 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:14:52" (1/1) ... [2023-08-24 11:14:52,387 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:14:52" (1/1) ... [2023-08-24 11:14:52,405 INFO L138 Inliner]: procedures = 171, calls = 47, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 43 [2023-08-24 11:14:52,406 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-24 11:14:52,406 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-24 11:14:52,406 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-24 11:14:52,406 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-24 11:14:52,413 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:14:52" (1/1) ... [2023-08-24 11:14:52,413 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:14:52" (1/1) ... [2023-08-24 11:14:52,424 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:14:52" (1/1) ... [2023-08-24 11:14:52,424 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:14:52" (1/1) ... [2023-08-24 11:14:52,433 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:14:52" (1/1) ... [2023-08-24 11:14:52,436 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:14:52" (1/1) ... [2023-08-24 11:14:52,442 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:14:52" (1/1) ... [2023-08-24 11:14:52,443 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:14:52" (1/1) ... [2023-08-24 11:14:52,445 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-24 11:14:52,446 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-24 11:14:52,446 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-24 11:14:52,446 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-24 11:14:52,447 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:14:52" (1/1) ... [2023-08-24 11:14:52,456 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 11:14:52,468 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 11:14:52,482 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-24 11:14:52,497 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-24 11:14:52,523 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-24 11:14:52,524 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2023-08-24 11:14:52,524 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2023-08-24 11:14:52,524 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-08-24 11:14:52,524 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-08-24 11:14:52,525 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-24 11:14:52,525 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-24 11:14:52,526 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-24 11:14:52,526 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-24 11:14:52,526 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-24 11:14:52,526 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-24 11:14:52,526 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-24 11:14:52,526 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-24 11:14:52,527 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-24 11:14:52,528 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-24 11:14:52,650 INFO L236 CfgBuilder]: Building ICFG [2023-08-24 11:14:52,652 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-24 11:14:52,761 INFO L277 CfgBuilder]: Performing block encoding [2023-08-24 11:14:52,766 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-24 11:14:52,766 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-24 11:14:52,768 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 11:14:52 BoogieIcfgContainer [2023-08-24 11:14:52,768 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-24 11:14:52,769 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-24 11:14:52,769 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-24 11:14:52,772 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-24 11:14:52,772 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.08 11:14:51" (1/3) ... [2023-08-24 11:14:52,772 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@727560f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 11:14:52, skipping insertion in model container [2023-08-24 11:14:52,772 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:14:52" (2/3) ... [2023-08-24 11:14:52,773 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@727560f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 11:14:52, skipping insertion in model container [2023-08-24 11:14:52,773 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 11:14:52" (3/3) ... [2023-08-24 11:14:52,774 INFO L112 eAbstractionObserver]: Analyzing ICFG peterson.i [2023-08-24 11:14:52,787 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-24 11:14:52,787 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-08-24 11:14:52,787 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-24 11:14:52,842 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-24 11:14:52,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 79 places, 78 transitions, 172 flow [2023-08-24 11:14:52,903 INFO L124 PetriNetUnfolderBase]: 6/76 cut-off events. [2023-08-24 11:14:52,903 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-24 11:14:52,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85 conditions, 76 events. 6/76 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 75 event pairs, 0 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 47. Up to 2 conditions per place. [2023-08-24 11:14:52,908 INFO L82 GeneralOperation]: Start removeDead. Operand has 79 places, 78 transitions, 172 flow [2023-08-24 11:14:52,911 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 68 places, 67 transitions, 143 flow [2023-08-24 11:14:52,914 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 11:14:52,936 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 68 places, 67 transitions, 143 flow [2023-08-24 11:14:52,938 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 68 places, 67 transitions, 143 flow [2023-08-24 11:14:52,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 68 places, 67 transitions, 143 flow [2023-08-24 11:14:52,970 INFO L124 PetriNetUnfolderBase]: 6/67 cut-off events. [2023-08-24 11:14:52,970 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-24 11:14:52,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 67 events. 6/67 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 75 event pairs, 0 based on Foata normal form. 0/59 useless extension candidates. Maximal degree in co-relation 47. Up to 2 conditions per place. [2023-08-24 11:14:52,973 INFO L119 LiptonReduction]: Number of co-enabled transitions 1188 [2023-08-24 11:14:54,594 INFO L134 LiptonReduction]: Checked pairs total: 4187 [2023-08-24 11:14:54,595 INFO L136 LiptonReduction]: Total number of compositions: 44 [2023-08-24 11:14:54,607 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-24 11:14:54,612 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=LoopsAndPotentialCycles, 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;@5939734b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 11:14:54,612 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-08-24 11:14:54,616 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 11:14:54,616 INFO L124 PetriNetUnfolderBase]: 1/15 cut-off events. [2023-08-24 11:14:54,616 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 11:14:54,616 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 11:14:54,617 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 11:14:54,617 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-24 11:14:54,621 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 11:14:54,621 INFO L85 PathProgramCache]: Analyzing trace with hash -1199357905, now seen corresponding path program 1 times [2023-08-24 11:14:54,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 11:14:54,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113613664] [2023-08-24 11:14:54,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 11:14:54,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 11:14:54,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 11:14:54,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 11:14:54,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 11:14:54,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113613664] [2023-08-24 11:14:54,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113613664] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 11:14:54,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 11:14:54,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 11:14:54,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904482027] [2023-08-24 11:14:54,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 11:14:54,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 11:14:54,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 11:14:54,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 11:14:54,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 11:14:54,857 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 122 [2023-08-24 11:14:54,860 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 29 transitions, 67 flow. Second operand has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 3 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:14:54,860 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 11:14:54,860 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 122 [2023-08-24 11:14:54,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 11:14:54,990 INFO L124 PetriNetUnfolderBase]: 193/398 cut-off events. [2023-08-24 11:14:54,990 INFO L125 PetriNetUnfolderBase]: For 28/28 co-relation queries the response was YES. [2023-08-24 11:14:54,994 INFO L83 FinitePrefix]: Finished finitePrefix Result has 787 conditions, 398 events. 193/398 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1829 event pairs, 74 based on Foata normal form. 24/332 useless extension candidates. Maximal degree in co-relation 672. Up to 185 conditions per place. [2023-08-24 11:14:54,997 INFO L140 encePairwiseOnDemand]: 116/122 looper letters, 26 selfloop transitions, 3 changer transitions 2/39 dead transitions. [2023-08-24 11:14:54,998 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 39 transitions, 152 flow [2023-08-24 11:14:54,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 11:14:55,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 11:14:55,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 224 transitions. [2023-08-24 11:14:55,013 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6120218579234973 [2023-08-24 11:14:55,014 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 224 transitions. [2023-08-24 11:14:55,014 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 224 transitions. [2023-08-24 11:14:55,016 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 11:14:55,018 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 224 transitions. [2023-08-24 11:14:55,022 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:14:55,026 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 122.0) internal successors, (488), 4 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:14:55,027 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 122.0) internal successors, (488), 4 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:14:55,029 INFO L175 Difference]: Start difference. First operand has 33 places, 29 transitions, 67 flow. Second operand 3 states and 224 transitions. [2023-08-24 11:14:55,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 39 transitions, 152 flow [2023-08-24 11:14:55,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 39 transitions, 145 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-24 11:14:55,034 INFO L231 Difference]: Finished difference. Result has 34 places, 29 transitions, 80 flow [2023-08-24 11:14:55,035 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=80, PETRI_PLACES=34, PETRI_TRANSITIONS=29} [2023-08-24 11:14:55,038 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 1 predicate places. [2023-08-24 11:14:55,039 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 29 transitions, 80 flow [2023-08-24 11:14:55,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 3 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:14:55,039 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 11:14:55,039 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 11:14:55,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-24 11:14:55,040 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr2Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-24 11:14:55,042 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 11:14:55,042 INFO L85 PathProgramCache]: Analyzing trace with hash -1903635038, now seen corresponding path program 1 times [2023-08-24 11:14:55,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 11:14:55,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587469854] [2023-08-24 11:14:55,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 11:14:55,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 11:14:55,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 11:14:55,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 11:14:55,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 11:14:55,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587469854] [2023-08-24 11:14:55,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587469854] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 11:14:55,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 11:14:55,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 11:14:55,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993505421] [2023-08-24 11:14:55,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 11:14:55,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 11:14:55,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 11:14:55,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 11:14:55,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 11:14:55,153 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 122 [2023-08-24 11:14:55,153 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 29 transitions, 80 flow. Second operand has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:14:55,153 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 11:14:55,153 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 122 [2023-08-24 11:14:55,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 11:14:55,231 INFO L124 PetriNetUnfolderBase]: 145/318 cut-off events. [2023-08-24 11:14:55,232 INFO L125 PetriNetUnfolderBase]: For 65/65 co-relation queries the response was YES. [2023-08-24 11:14:55,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 685 conditions, 318 events. 145/318 cut-off events. For 65/65 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1389 event pairs, 82 based on Foata normal form. 22/316 useless extension candidates. Maximal degree in co-relation 271. Up to 182 conditions per place. [2023-08-24 11:14:55,235 INFO L140 encePairwiseOnDemand]: 117/122 looper letters, 21 selfloop transitions, 2 changer transitions 5/36 dead transitions. [2023-08-24 11:14:55,235 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 36 transitions, 151 flow [2023-08-24 11:14:55,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 11:14:55,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 11:14:55,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 220 transitions. [2023-08-24 11:14:55,240 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6010928961748634 [2023-08-24 11:14:55,240 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 220 transitions. [2023-08-24 11:14:55,241 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 220 transitions. [2023-08-24 11:14:55,241 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 11:14:55,241 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 220 transitions. [2023-08-24 11:14:55,243 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 73.33333333333333) internal successors, (220), 3 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:14:55,245 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 122.0) internal successors, (488), 4 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:14:55,245 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 122.0) internal successors, (488), 4 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:14:55,245 INFO L175 Difference]: Start difference. First operand has 34 places, 29 transitions, 80 flow. Second operand 3 states and 220 transitions. [2023-08-24 11:14:55,246 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 36 transitions, 151 flow [2023-08-24 11:14:55,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 36 transitions, 145 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-24 11:14:55,251 INFO L231 Difference]: Finished difference. Result has 35 places, 28 transitions, 82 flow [2023-08-24 11:14:55,251 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=82, PETRI_PLACES=35, PETRI_TRANSITIONS=28} [2023-08-24 11:14:55,256 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 2 predicate places. [2023-08-24 11:14:55,256 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 28 transitions, 82 flow [2023-08-24 11:14:55,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:14:55,256 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 11:14:55,257 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 11:14:55,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-24 11:14:55,257 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-24 11:14:55,259 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 11:14:55,259 INFO L85 PathProgramCache]: Analyzing trace with hash -105818293, now seen corresponding path program 1 times [2023-08-24 11:14:55,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 11:14:55,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770324940] [2023-08-24 11:14:55,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 11:14:55,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 11:14:55,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 11:14:55,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 11:14:55,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 11:14:55,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770324940] [2023-08-24 11:14:55,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770324940] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 11:14:55,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 11:14:55,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-24 11:14:55,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314619007] [2023-08-24 11:14:55,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 11:14:55,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-24 11:14:55,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 11:14:55,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-24 11:14:55,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-24 11:14:55,404 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 122 [2023-08-24 11:14:55,405 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 28 transitions, 82 flow. Second operand has 6 states, 6 states have (on average 58.333333333333336) internal successors, (350), 6 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:14:55,405 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 11:14:55,405 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 122 [2023-08-24 11:14:55,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 11:14:55,661 INFO L124 PetriNetUnfolderBase]: 382/699 cut-off events. [2023-08-24 11:14:55,661 INFO L125 PetriNetUnfolderBase]: For 257/257 co-relation queries the response was YES. [2023-08-24 11:14:55,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1529 conditions, 699 events. 382/699 cut-off events. For 257/257 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 3126 event pairs, 55 based on Foata normal form. 30/727 useless extension candidates. Maximal degree in co-relation 1308. Up to 307 conditions per place. [2023-08-24 11:14:55,664 INFO L140 encePairwiseOnDemand]: 113/122 looper letters, 45 selfloop transitions, 10 changer transitions 35/92 dead transitions. [2023-08-24 11:14:55,664 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 92 transitions, 418 flow [2023-08-24 11:14:55,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-24 11:14:55,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-24 11:14:55,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 653 transitions. [2023-08-24 11:14:55,667 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5352459016393443 [2023-08-24 11:14:55,667 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 653 transitions. [2023-08-24 11:14:55,667 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 653 transitions. [2023-08-24 11:14:55,667 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 11:14:55,667 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 653 transitions. [2023-08-24 11:14:55,669 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 65.3) internal successors, (653), 10 states have internal predecessors, (653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:14:55,671 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 122.0) internal successors, (1342), 11 states have internal predecessors, (1342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:14:55,672 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 122.0) internal successors, (1342), 11 states have internal predecessors, (1342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:14:55,672 INFO L175 Difference]: Start difference. First operand has 35 places, 28 transitions, 82 flow. Second operand 10 states and 653 transitions. [2023-08-24 11:14:55,672 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 92 transitions, 418 flow [2023-08-24 11:14:55,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 92 transitions, 415 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-24 11:14:55,676 INFO L231 Difference]: Finished difference. Result has 50 places, 37 transitions, 166 flow [2023-08-24 11:14:55,676 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=166, PETRI_PLACES=50, PETRI_TRANSITIONS=37} [2023-08-24 11:14:55,677 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 17 predicate places. [2023-08-24 11:14:55,677 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 37 transitions, 166 flow [2023-08-24 11:14:55,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 58.333333333333336) internal successors, (350), 6 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:14:55,678 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 11:14:55,678 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 11:14:55,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-24 11:14:55,678 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-24 11:14:55,679 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 11:14:55,679 INFO L85 PathProgramCache]: Analyzing trace with hash 532751593, now seen corresponding path program 2 times [2023-08-24 11:14:55,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 11:14:55,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255785395] [2023-08-24 11:14:55,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 11:14:55,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 11:14:55,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 11:14:55,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 11:14:55,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 11:14:55,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255785395] [2023-08-24 11:14:55,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255785395] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 11:14:55,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 11:14:55,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-24 11:14:55,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061844464] [2023-08-24 11:14:55,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 11:14:55,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-24 11:14:55,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 11:14:55,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-24 11:14:55,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-24 11:14:55,791 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 122 [2023-08-24 11:14:55,791 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 37 transitions, 166 flow. Second operand has 6 states, 6 states have (on average 58.333333333333336) internal successors, (350), 6 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:14:55,791 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 11:14:55,791 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 122 [2023-08-24 11:14:55,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 11:14:55,954 INFO L124 PetriNetUnfolderBase]: 313/582 cut-off events. [2023-08-24 11:14:55,954 INFO L125 PetriNetUnfolderBase]: For 702/704 co-relation queries the response was YES. [2023-08-24 11:14:55,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1731 conditions, 582 events. 313/582 cut-off events. For 702/704 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2499 event pairs, 40 based on Foata normal form. 24/604 useless extension candidates. Maximal degree in co-relation 1274. Up to 233 conditions per place. [2023-08-24 11:14:55,957 INFO L140 encePairwiseOnDemand]: 113/122 looper letters, 0 selfloop transitions, 0 changer transitions 90/90 dead transitions. [2023-08-24 11:14:55,957 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 90 transitions, 587 flow [2023-08-24 11:14:55,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-24 11:14:55,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-24 11:14:55,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 579 transitions. [2023-08-24 11:14:55,959 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5273224043715847 [2023-08-24 11:14:55,959 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 579 transitions. [2023-08-24 11:14:55,959 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 579 transitions. [2023-08-24 11:14:55,959 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 11:14:55,960 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 579 transitions. [2023-08-24 11:14:55,961 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 64.33333333333333) internal successors, (579), 9 states have internal predecessors, (579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:14:55,963 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 122.0) internal successors, (1220), 10 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:14:55,963 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 122.0) internal successors, (1220), 10 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:14:55,963 INFO L175 Difference]: Start difference. First operand has 50 places, 37 transitions, 166 flow. Second operand 9 states and 579 transitions. [2023-08-24 11:14:55,963 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 90 transitions, 587 flow [2023-08-24 11:14:55,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 90 transitions, 523 flow, removed 30 selfloop flow, removed 4 redundant places. [2023-08-24 11:14:55,970 INFO L231 Difference]: Finished difference. Result has 49 places, 0 transitions, 0 flow [2023-08-24 11:14:55,970 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=0, PETRI_PLACES=49, PETRI_TRANSITIONS=0} [2023-08-24 11:14:55,971 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 16 predicate places. [2023-08-24 11:14:55,971 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 0 transitions, 0 flow [2023-08-24 11:14:55,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 58.333333333333336) internal successors, (350), 6 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:14:55,973 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2023-08-24 11:14:55,974 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2023-08-24 11:14:55,974 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 6 remaining) [2023-08-24 11:14:55,974 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2023-08-24 11:14:55,974 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2023-08-24 11:14:55,975 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2023-08-24 11:14:55,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-24 11:14:55,975 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2023-08-24 11:14:55,979 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-24 11:14:55,979 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-24 11:14:55,982 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.08 11:14:55 BasicIcfg [2023-08-24 11:14:55,982 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-24 11:14:55,982 INFO L158 Benchmark]: Toolchain (without parser) took 4102.11ms. Allocated memory was 339.7MB in the beginning and 494.9MB in the end (delta: 155.2MB). Free memory was 316.0MB in the beginning and 415.5MB in the end (delta: -99.5MB). Peak memory consumption was 57.1MB. Max. memory is 16.0GB. [2023-08-24 11:14:55,983 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 339.7MB. Free memory is still 318.1MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-24 11:14:55,983 INFO L158 Benchmark]: CACSL2BoogieTranslator took 472.24ms. Allocated memory is still 339.7MB. Free memory was 315.5MB in the beginning and 295.4MB in the end (delta: 20.1MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. [2023-08-24 11:14:55,983 INFO L158 Benchmark]: Boogie Procedure Inliner took 51.75ms. Allocated memory is still 339.7MB. Free memory was 295.4MB in the beginning and 293.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-24 11:14:55,984 INFO L158 Benchmark]: Boogie Preprocessor took 39.16ms. Allocated memory is still 339.7MB. Free memory was 293.8MB in the beginning and 292.3MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-24 11:14:55,984 INFO L158 Benchmark]: RCFGBuilder took 321.82ms. Allocated memory is still 339.7MB. Free memory was 292.3MB in the beginning and 279.1MB in the end (delta: 13.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-08-24 11:14:55,985 INFO L158 Benchmark]: TraceAbstraction took 3212.49ms. Allocated memory was 339.7MB in the beginning and 494.9MB in the end (delta: 155.2MB). Free memory was 278.6MB in the beginning and 415.5MB in the end (delta: -136.9MB). Peak memory consumption was 19.3MB. Max. memory is 16.0GB. [2023-08-24 11:14:55,986 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 339.7MB. Free memory is still 318.1MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 472.24ms. Allocated memory is still 339.7MB. Free memory was 315.5MB in the beginning and 295.4MB in the end (delta: 20.1MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 51.75ms. Allocated memory is still 339.7MB. Free memory was 295.4MB in the beginning and 293.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 39.16ms. Allocated memory is still 339.7MB. Free memory was 293.8MB in the beginning and 292.3MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 321.82ms. Allocated memory is still 339.7MB. Free memory was 292.3MB in the beginning and 279.1MB in the end (delta: 13.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 3212.49ms. Allocated memory was 339.7MB in the beginning and 494.9MB in the end (delta: 155.2MB). Free memory was 278.6MB in the beginning and 415.5MB in the end (delta: -136.9MB). Peak memory consumption was 19.3MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 265]: Unsoundness Warning unspecified type, defaulting to int C: short [265] - GenericResultAtLocation [Line: 265]: Unsoundness Warning unspecified type, defaulting to int C: short [265] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.7s, 68 PlacesBefore, 33 PlacesAfterwards, 67 TransitionsBefore, 29 TransitionsAfterwards, 1188 CoEnabledTransitionPairs, 6 FixpointIterations, 17 TrivialSequentialCompositions, 17 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 3 ChoiceCompositions, 44 TotalNumberOfCompositions, 4187 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2495, independent: 2278, independent conditional: 0, independent unconditional: 2278, dependent: 217, dependent conditional: 0, dependent unconditional: 217, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 648, independent: 619, independent conditional: 0, independent unconditional: 619, dependent: 29, dependent conditional: 0, dependent unconditional: 29, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2495, independent: 1659, independent conditional: 0, independent unconditional: 1659, dependent: 188, dependent conditional: 0, dependent unconditional: 188, unknown: 648, unknown conditional: 0, unknown unconditional: 648] , Statistics on independence cache: Total cache size (in pairs): 154, Positive cache size: 137, Positive conditional cache size: 0, Positive unconditional cache size: 137, Negative cache size: 17, Negative conditional cache size: 0, Negative unconditional cache size: 17, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 753]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 725]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 107 locations, 6 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: 3.1s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.7s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 129 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 129 mSDsluCounter, 52 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 21 mSDsCounter, 12 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 511 IncrementalHoareTripleChecker+Invalid, 523 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 12 mSolverCounterUnsat, 31 mSDtfsCounter, 511 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=166occurred in iteration=3, InterpolantAutomatonStates: 25, 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, 0.4s InterpolantComputationTime, 48 NumberOfCodeBlocks, 48 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 44 ConstructedInterpolants, 0 QuantifiedInterpolants, 108 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-24 11:14:56,002 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...