/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 -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/ldv-races/race-2_2-container_of.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-23 23:12:27,766 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-23 23:12:27,852 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 [2023-08-23 23:12:27,856 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-23 23:12:27,856 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-23 23:12:27,881 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-23 23:12:27,881 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-23 23:12:27,882 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-23 23:12:27,882 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-23 23:12:27,886 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-23 23:12:27,886 INFO L153 SettingsManager]: * Use SBE=true [2023-08-23 23:12:27,886 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-23 23:12:27,887 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-23 23:12:27,888 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-23 23:12:27,888 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-23 23:12:27,888 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-23 23:12:27,888 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-23 23:12:27,889 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-23 23:12:27,889 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-23 23:12:27,889 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-23 23:12:27,889 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-23 23:12:27,890 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-23 23:12:27,890 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-23 23:12:27,891 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-23 23:12:27,891 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-23 23:12:27,891 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-23 23:12:27,891 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-23 23:12:27,892 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-23 23:12:27,892 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-23 23:12:27,892 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-23 23:12:27,893 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-23 23:12:27,893 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-23 23:12:27,894 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-23 23:12:27,894 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-23 23:12:27,894 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-23 23:12:27,894 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-08-23 23:12:28,198 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-23 23:12:28,222 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-23 23:12:28,225 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-23 23:12:28,225 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-23 23:12:28,226 INFO L274 PluginConnector]: CDTParser initialized [2023-08-23 23:12:28,227 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-races/race-2_2-container_of.i [2023-08-23 23:12:29,470 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-23 23:12:29,784 INFO L384 CDTParser]: Found 1 translation units. [2023-08-23 23:12:29,785 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-2_2-container_of.i [2023-08-23 23:12:29,811 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d64fccaf5/019d0d33fffe4cacba2feb7075f45525/FLAG152eefd28 [2023-08-23 23:12:29,826 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d64fccaf5/019d0d33fffe4cacba2feb7075f45525 [2023-08-23 23:12:29,830 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-23 23:12:29,833 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-23 23:12:29,836 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-23 23:12:29,836 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-23 23:12:29,838 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-23 23:12:29,840 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.08 11:12:29" (1/1) ... [2023-08-23 23:12:29,840 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24eff01b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:12:29, skipping insertion in model container [2023-08-23 23:12:29,841 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.08 11:12:29" (1/1) ... [2023-08-23 23:12:29,906 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-23 23:12:30,056 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-08-23 23:12:30,445 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-2_2-container_of.i[75002,75015] [2023-08-23 23:12:30,498 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-23 23:12:30,510 INFO L201 MainTranslator]: Completed pre-run [2023-08-23 23:12:30,521 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-08-23 23:12:30,535 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [251] [2023-08-23 23:12:30,537 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [251] [2023-08-23 23:12:30,544 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: unsigned short [735] [2023-08-23 23:12:30,584 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-2_2-container_of.i[75002,75015] [2023-08-23 23:12:30,587 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: unsigned long [1691] [2023-08-23 23:12:30,607 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-23 23:12:30,721 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-23 23:12:30,721 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-23 23:12:30,722 WARN L669 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-08-23 23:12:30,752 INFO L206 MainTranslator]: Completed translation [2023-08-23 23:12:30,752 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:12:30 WrapperNode [2023-08-23 23:12:30,752 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-23 23:12:30,753 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-23 23:12:30,753 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-23 23:12:30,753 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-23 23:12:30,758 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:12:30" (1/1) ... [2023-08-23 23:12:30,783 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:12:30" (1/1) ... [2023-08-23 23:12:30,816 INFO L138 Inliner]: procedures = 468, calls = 48, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 118 [2023-08-23 23:12:30,817 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-23 23:12:30,817 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-23 23:12:30,817 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-23 23:12:30,817 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-23 23:12:30,829 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:12:30" (1/1) ... [2023-08-23 23:12:30,829 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:12:30" (1/1) ... [2023-08-23 23:12:30,841 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:12:30" (1/1) ... [2023-08-23 23:12:30,842 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:12:30" (1/1) ... [2023-08-23 23:12:30,852 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:12:30" (1/1) ... [2023-08-23 23:12:30,854 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:12:30" (1/1) ... [2023-08-23 23:12:30,857 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:12:30" (1/1) ... [2023-08-23 23:12:30,859 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:12:30" (1/1) ... [2023-08-23 23:12:30,864 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-23 23:12:30,865 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-23 23:12:30,865 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-23 23:12:30,865 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-23 23:12:30,866 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:12:30" (1/1) ... [2023-08-23 23:12:30,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-23 23:12:30,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-23 23:12:30,900 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) [2023-08-23 23:12:30,928 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 [2023-08-23 23:12:30,941 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-23 23:12:30,942 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-23 23:12:30,942 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-23 23:12:30,942 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-23 23:12:30,942 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-23 23:12:30,942 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-08-23 23:12:30,942 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-23 23:12:30,942 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-23 23:12:30,942 INFO L130 BoogieDeclarations]: Found specification of procedure my_callback [2023-08-23 23:12:30,942 INFO L138 BoogieDeclarations]: Found implementation of procedure my_callback [2023-08-23 23:12:30,943 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-23 23:12:30,943 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-23 23:12:30,943 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-23 23:12:30,944 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-23 23:12:31,165 INFO L236 CfgBuilder]: Building ICFG [2023-08-23 23:12:31,167 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-23 23:12:31,433 INFO L277 CfgBuilder]: Performing block encoding [2023-08-23 23:12:31,452 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-23 23:12:31,452 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-23 23:12:31,454 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.08 11:12:31 BoogieIcfgContainer [2023-08-23 23:12:31,454 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-23 23:12:31,457 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-23 23:12:31,457 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-23 23:12:31,460 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-23 23:12:31,460 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.08 11:12:29" (1/3) ... [2023-08-23 23:12:31,461 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ed99b6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.08 11:12:31, skipping insertion in model container [2023-08-23 23:12:31,461 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:12:30" (2/3) ... [2023-08-23 23:12:31,461 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ed99b6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.08 11:12:31, skipping insertion in model container [2023-08-23 23:12:31,462 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.08 11:12:31" (3/3) ... [2023-08-23 23:12:31,464 INFO L112 eAbstractionObserver]: Analyzing ICFG race-2_2-container_of.i [2023-08-23 23:12:31,480 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-23 23:12:31,480 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-08-23 23:12:31,480 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-23 23:12:31,551 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-23 23:12:31,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 151 places, 151 transitions, 318 flow [2023-08-23 23:12:31,664 INFO L124 PetriNetUnfolderBase]: 8/191 cut-off events. [2023-08-23 23:12:31,664 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-23 23:12:31,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 200 conditions, 191 events. 8/191 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 332 event pairs, 0 based on Foata normal form. 0/175 useless extension candidates. Maximal degree in co-relation 104. Up to 4 conditions per place. [2023-08-23 23:12:31,671 INFO L82 GeneralOperation]: Start removeDead. Operand has 151 places, 151 transitions, 318 flow [2023-08-23 23:12:31,679 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 139 places, 137 transitions, 286 flow [2023-08-23 23:12:31,682 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-23 23:12:31,691 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 139 places, 137 transitions, 286 flow [2023-08-23 23:12:31,693 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 139 places, 137 transitions, 286 flow [2023-08-23 23:12:31,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 139 places, 137 transitions, 286 flow [2023-08-23 23:12:31,754 INFO L124 PetriNetUnfolderBase]: 5/168 cut-off events. [2023-08-23 23:12:31,755 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-23 23:12:31,756 INFO L83 FinitePrefix]: Finished finitePrefix Result has 177 conditions, 168 events. 5/168 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 270 event pairs, 0 based on Foata normal form. 0/157 useless extension candidates. Maximal degree in co-relation 92. Up to 4 conditions per place. [2023-08-23 23:12:31,759 INFO L119 LiptonReduction]: Number of co-enabled transitions 1980 [2023-08-23 23:12:39,911 INFO L134 LiptonReduction]: Checked pairs total: 3020 [2023-08-23 23:12:39,911 INFO L136 LiptonReduction]: Total number of compositions: 140 [2023-08-23 23:12:39,922 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-23 23:12:39,927 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;@238f3bea, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-23 23:12:39,927 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-08-23 23:12:39,932 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-23 23:12:39,932 INFO L124 PetriNetUnfolderBase]: 0/11 cut-off events. [2023-08-23 23:12:39,932 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-23 23:12:39,932 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-23 23:12:39,933 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-23 23:12:39,933 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-08-23 23:12:39,937 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-23 23:12:39,937 INFO L85 PathProgramCache]: Analyzing trace with hash 491410179, now seen corresponding path program 1 times [2023-08-23 23:12:39,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-23 23:12:39,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872215816] [2023-08-23 23:12:39,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-23 23:12:39,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-23 23:12:40,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-23 23:12:40,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-23 23:12:40,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-23 23:12:40,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872215816] [2023-08-23 23:12:40,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872215816] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-23 23:12:40,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-23 23:12:40,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-23 23:12:40,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9378343] [2023-08-23 23:12:40,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-23 23:12:40,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-23 23:12:40,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-23 23:12:40,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-23 23:12:40,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-23 23:12:40,504 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 291 [2023-08-23 23:12:40,508 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 26 transitions, 64 flow. Second operand has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:12:40,508 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-23 23:12:40,509 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 291 [2023-08-23 23:12:40,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-23 23:12:40,693 INFO L124 PetriNetUnfolderBase]: 242/444 cut-off events. [2023-08-23 23:12:40,693 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2023-08-23 23:12:40,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 907 conditions, 444 events. 242/444 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1844 event pairs, 137 based on Foata normal form. 17/409 useless extension candidates. Maximal degree in co-relation 830. Up to 369 conditions per place. [2023-08-23 23:12:40,698 INFO L140 encePairwiseOnDemand]: 283/291 looper letters, 27 selfloop transitions, 6 changer transitions 0/33 dead transitions. [2023-08-23 23:12:40,698 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 33 transitions, 144 flow [2023-08-23 23:12:40,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-23 23:12:40,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-23 23:12:40,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 360 transitions. [2023-08-23 23:12:40,718 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41237113402061853 [2023-08-23 23:12:40,719 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 360 transitions. [2023-08-23 23:12:40,719 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 360 transitions. [2023-08-23 23:12:40,721 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-23 23:12:40,723 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 360 transitions. [2023-08-23 23:12:40,727 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 120.0) internal successors, (360), 3 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:12:40,731 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 291.0) internal successors, (1164), 4 states have internal predecessors, (1164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:12:40,731 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 291.0) internal successors, (1164), 4 states have internal predecessors, (1164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:12:40,732 INFO L175 Difference]: Start difference. First operand has 30 places, 26 transitions, 64 flow. Second operand 3 states and 360 transitions. [2023-08-23 23:12:40,733 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 33 transitions, 144 flow [2023-08-23 23:12:40,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 33 transitions, 136 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-23 23:12:40,736 INFO L231 Difference]: Finished difference. Result has 29 places, 29 transitions, 90 flow [2023-08-23 23:12:40,737 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=291, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=90, PETRI_PLACES=29, PETRI_TRANSITIONS=29} [2023-08-23 23:12:40,740 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, -1 predicate places. [2023-08-23 23:12:40,740 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 29 transitions, 90 flow [2023-08-23 23:12:40,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:12:40,741 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-23 23:12:40,741 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-23 23:12:40,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-23 23:12:40,741 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-08-23 23:12:40,742 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-23 23:12:40,742 INFO L85 PathProgramCache]: Analyzing trace with hash 15851971, now seen corresponding path program 1 times [2023-08-23 23:12:40,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-23 23:12:40,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902024369] [2023-08-23 23:12:40,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-23 23:12:40,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-23 23:12:40,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-23 23:12:40,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-23 23:12:40,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-23 23:12:40,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902024369] [2023-08-23 23:12:40,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902024369] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-23 23:12:40,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-23 23:12:40,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-23 23:12:40,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830496495] [2023-08-23 23:12:40,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-23 23:12:40,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-23 23:12:40,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-23 23:12:40,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-23 23:12:40,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-23 23:12:40,915 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 291 [2023-08-23 23:12:40,916 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 29 transitions, 90 flow. Second operand has 3 states, 3 states have (on average 109.33333333333333) internal successors, (328), 3 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:12:40,916 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-23 23:12:40,916 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 291 [2023-08-23 23:12:40,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-23 23:12:41,051 INFO L124 PetriNetUnfolderBase]: 291/536 cut-off events. [2023-08-23 23:12:41,051 INFO L125 PetriNetUnfolderBase]: For 162/162 co-relation queries the response was YES. [2023-08-23 23:12:41,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1421 conditions, 536 events. 291/536 cut-off events. For 162/162 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2389 event pairs, 149 based on Foata normal form. 0/487 useless extension candidates. Maximal degree in co-relation 511. Up to 461 conditions per place. [2023-08-23 23:12:41,055 INFO L140 encePairwiseOnDemand]: 284/291 looper letters, 30 selfloop transitions, 9 changer transitions 2/41 dead transitions. [2023-08-23 23:12:41,056 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 41 transitions, 219 flow [2023-08-23 23:12:41,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-23 23:12:41,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-23 23:12:41,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 358 transitions. [2023-08-23 23:12:41,058 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41008018327605955 [2023-08-23 23:12:41,058 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 358 transitions. [2023-08-23 23:12:41,058 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 358 transitions. [2023-08-23 23:12:41,058 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-23 23:12:41,058 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 358 transitions. [2023-08-23 23:12:41,060 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 119.33333333333333) internal successors, (358), 3 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:12:41,062 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 291.0) internal successors, (1164), 4 states have internal predecessors, (1164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:12:41,063 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 291.0) internal successors, (1164), 4 states have internal predecessors, (1164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:12:41,063 INFO L175 Difference]: Start difference. First operand has 29 places, 29 transitions, 90 flow. Second operand 3 states and 358 transitions. [2023-08-23 23:12:41,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 41 transitions, 219 flow [2023-08-23 23:12:41,066 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 41 transitions, 208 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-23 23:12:41,067 INFO L231 Difference]: Finished difference. Result has 31 places, 35 transitions, 155 flow [2023-08-23 23:12:41,067 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=291, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=155, PETRI_PLACES=31, PETRI_TRANSITIONS=35} [2023-08-23 23:12:41,068 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 1 predicate places. [2023-08-23 23:12:41,068 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 35 transitions, 155 flow [2023-08-23 23:12:41,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 109.33333333333333) internal successors, (328), 3 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:12:41,068 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-23 23:12:41,069 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-23 23:12:41,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-23 23:12:41,069 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-08-23 23:12:41,069 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-23 23:12:41,070 INFO L85 PathProgramCache]: Analyzing trace with hash 1930456343, now seen corresponding path program 1 times [2023-08-23 23:12:41,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-23 23:12:41,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281418254] [2023-08-23 23:12:41,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-23 23:12:41,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-23 23:12:41,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-23 23:12:41,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-23 23:12:41,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-23 23:12:41,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281418254] [2023-08-23 23:12:41,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281418254] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-23 23:12:41,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-23 23:12:41,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-23 23:12:41,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762032265] [2023-08-23 23:12:41,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-23 23:12:41,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-23 23:12:41,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-23 23:12:41,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-23 23:12:41,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-23 23:12:41,168 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 291 [2023-08-23 23:12:41,169 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 35 transitions, 155 flow. Second operand has 3 states, 3 states have (on average 133.66666666666666) internal successors, (401), 3 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:12:41,169 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-23 23:12:41,169 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 291 [2023-08-23 23:12:41,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-23 23:12:41,233 INFO L124 PetriNetUnfolderBase]: 72/144 cut-off events. [2023-08-23 23:12:41,233 INFO L125 PetriNetUnfolderBase]: For 155/155 co-relation queries the response was YES. [2023-08-23 23:12:41,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 414 conditions, 144 events. 72/144 cut-off events. For 155/155 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 401 event pairs, 15 based on Foata normal form. 16/159 useless extension candidates. Maximal degree in co-relation 409. Up to 104 conditions per place. [2023-08-23 23:12:41,234 INFO L140 encePairwiseOnDemand]: 289/291 looper letters, 23 selfloop transitions, 1 changer transitions 0/24 dead transitions. [2023-08-23 23:12:41,234 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 24 transitions, 132 flow [2023-08-23 23:12:41,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-23 23:12:41,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-23 23:12:41,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 418 transitions. [2023-08-23 23:12:41,236 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47880870561282934 [2023-08-23 23:12:41,236 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 418 transitions. [2023-08-23 23:12:41,236 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 418 transitions. [2023-08-23 23:12:41,237 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-23 23:12:41,237 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 418 transitions. [2023-08-23 23:12:41,238 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 139.33333333333334) internal successors, (418), 3 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:12:41,240 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 291.0) internal successors, (1164), 4 states have internal predecessors, (1164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:12:41,240 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 291.0) internal successors, (1164), 4 states have internal predecessors, (1164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:12:41,241 INFO L175 Difference]: Start difference. First operand has 31 places, 35 transitions, 155 flow. Second operand 3 states and 418 transitions. [2023-08-23 23:12:41,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 24 transitions, 132 flow [2023-08-23 23:12:41,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 24 transitions, 116 flow, removed 8 selfloop flow, removed 1 redundant places. [2023-08-23 23:12:41,242 INFO L231 Difference]: Finished difference. Result has 25 places, 18 transitions, 50 flow [2023-08-23 23:12:41,242 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=291, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=50, PETRI_PLACES=25, PETRI_TRANSITIONS=18} [2023-08-23 23:12:41,243 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, -5 predicate places. [2023-08-23 23:12:41,243 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 18 transitions, 50 flow [2023-08-23 23:12:41,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 133.66666666666666) internal successors, (401), 3 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:12:41,243 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-23 23:12:41,244 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-23 23:12:41,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-23 23:12:41,244 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-08-23 23:12:41,244 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-23 23:12:41,244 INFO L85 PathProgramCache]: Analyzing trace with hash 1199905201, now seen corresponding path program 1 times [2023-08-23 23:12:41,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-23 23:12:41,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357731019] [2023-08-23 23:12:41,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-23 23:12:41,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-23 23:12:41,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-23 23:12:41,333 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-23 23:12:41,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-23 23:12:41,452 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-23 23:12:41,453 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-23 23:12:41,454 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2023-08-23 23:12:41,455 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2023-08-23 23:12:41,456 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (3 of 6 remaining) [2023-08-23 23:12:41,456 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining) [2023-08-23 23:12:41,456 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 6 remaining) [2023-08-23 23:12:41,456 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 6 remaining) [2023-08-23 23:12:41,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-23 23:12:41,456 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-08-23 23:12:41,461 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-23 23:12:41,461 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-23 23:12:41,499 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.08 11:12:41 BasicIcfg [2023-08-23 23:12:41,500 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-23 23:12:41,500 INFO L158 Benchmark]: Toolchain (without parser) took 11667.66ms. Allocated memory was 358.6MB in the beginning and 442.5MB in the end (delta: 83.9MB). Free memory was 332.4MB in the beginning and 326.6MB in the end (delta: 5.8MB). Peak memory consumption was 90.5MB. Max. memory is 16.0GB. [2023-08-23 23:12:41,501 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 358.6MB. Free memory is still 335.2MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-23 23:12:41,501 INFO L158 Benchmark]: CACSL2BoogieTranslator took 917.01ms. Allocated memory is still 358.6MB. Free memory was 332.2MB in the beginning and 332.5MB in the end (delta: -316.1kB). Peak memory consumption was 63.6MB. Max. memory is 16.0GB. [2023-08-23 23:12:41,504 INFO L158 Benchmark]: Boogie Procedure Inliner took 63.46ms. Allocated memory is still 358.6MB. Free memory was 332.5MB in the beginning and 329.5MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-23 23:12:41,504 INFO L158 Benchmark]: Boogie Preprocessor took 46.87ms. Allocated memory is still 358.6MB. Free memory was 329.5MB in the beginning and 326.4MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2023-08-23 23:12:41,505 INFO L158 Benchmark]: RCFGBuilder took 589.56ms. Allocated memory is still 358.6MB. Free memory was 326.4MB in the beginning and 303.3MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.0GB. [2023-08-23 23:12:41,505 INFO L158 Benchmark]: TraceAbstraction took 10043.03ms. Allocated memory was 358.6MB in the beginning and 442.5MB in the end (delta: 83.9MB). Free memory was 302.4MB in the beginning and 326.6MB in the end (delta: -24.2MB). Peak memory consumption was 60.4MB. Max. memory is 16.0GB. [2023-08-23 23:12:41,509 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 358.6MB. Free memory is still 335.2MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 917.01ms. Allocated memory is still 358.6MB. Free memory was 332.2MB in the beginning and 332.5MB in the end (delta: -316.1kB). Peak memory consumption was 63.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 63.46ms. Allocated memory is still 358.6MB. Free memory was 332.5MB in the beginning and 329.5MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 46.87ms. Allocated memory is still 358.6MB. Free memory was 329.5MB in the beginning and 326.4MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * RCFGBuilder took 589.56ms. Allocated memory is still 358.6MB. Free memory was 326.4MB in the beginning and 303.3MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.0GB. * TraceAbstraction took 10043.03ms. Allocated memory was 358.6MB in the beginning and 442.5MB in the end (delta: 83.9MB). Free memory was 302.4MB in the beginning and 326.6MB in the end (delta: -24.2MB). Peak memory consumption was 60.4MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 251]: Unsoundness Warning unspecified type, defaulting to int C: short [251] - GenericResultAtLocation [Line: 251]: Unsoundness Warning unspecified type, defaulting to int C: short [251] - GenericResultAtLocation [Line: 735]: Unsoundness Warning unspecified type, defaulting to int C: unsigned short [735] - GenericResultAtLocation [Line: 1691]: Unsoundness Warning unspecified type, defaulting to int C: unsigned long [1691] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 8.2s, 139 PlacesBefore, 30 PlacesAfterwards, 137 TransitionsBefore, 26 TransitionsAfterwards, 1980 CoEnabledTransitionPairs, 7 FixpointIterations, 74 TrivialSequentialCompositions, 45 ConcurrentSequentialCompositions, 3 TrivialYvCompositions, 16 ConcurrentYvCompositions, 2 ChoiceCompositions, 140 TotalNumberOfCompositions, 3020 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1633, independent: 1502, independent conditional: 0, independent unconditional: 1502, dependent: 131, dependent conditional: 0, dependent unconditional: 131, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1039, independent: 1004, independent conditional: 0, independent unconditional: 1004, dependent: 35, dependent conditional: 0, dependent unconditional: 35, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1633, independent: 498, independent conditional: 0, independent unconditional: 498, dependent: 96, dependent conditional: 0, dependent unconditional: 96, unknown: 1039, unknown conditional: 0, unknown unconditional: 1039] , Statistics on independence cache: Total cache size (in pairs): 24, Positive cache size: 10, Positive conditional cache size: 0, Positive unconditional cache size: 10, Negative cache size: 14, Negative conditional cache size: 0, Negative unconditional cache size: 14, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - CounterExampleResult [Line: 1675]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L1676] 0 pthread_t t1,t2; [L1731] CALL, EXPR 0 my_drv_init() [L1725] 0 return 0; [L1731] RET, EXPR 0 my_drv_init() [L1731] 0 int ret = my_drv_init(); [L1732] COND TRUE 0 ret==0 [L1733] 0 int probe_ret; [L1734] 0 struct my_data data; [L1735] CALL, EXPR 0 my_drv_probe(&data) [L1704] 0 struct device *d = &data->dev; [L1706] 0 data->shared.a = 0 [L1707] 0 data->shared.b = 0 [L1708] 0 int res = __VERIFIER_nondet_int(); [L1709] COND FALSE 0 !(\read(res)) [L1711] FCALL, FORK 0 pthread_create(&t1, ((void *)0), my_callback, (void *)d) VAL [arg={6:24}, d={6:24}, data={6:0}, data={6:0}, pthread_create(&t1, ((void *)0), my_callback, (void *)d)=-10, res=0, t1={3:0}, t2={4:0}] [L1689] 1 struct device *dev = (struct device*)arg; [L1690] 1 struct my_data *data; [L1691] 1 const typeof( ((struct my_data *)0)->dev ) *__mptr = (dev); [L1691] 1 { const typeof( ((struct my_data *)0)->dev ) *__mptr = (dev); (struct my_data *)( (char *)__mptr - ((unsigned long) &((struct my_data *)0)->dev) );} [L1691] 1 data = ({ const typeof( ((struct my_data *)0)->dev ) *__mptr = (dev); (struct my_data *)( (char *)__mptr - ((unsigned long) &((struct my_data *)0)->dev) );}) [L1693] 1 data->shared.a = 1 VAL [__mptr={4:25}, arg={6:24}, arg={6:24}, data={4:1}, dev={6:24}, t1={3:0}, t2={4:0}] [L1696] EXPR 1 data->shared.b [L1696] 1 int lb = data->shared.b; [L1712] FCALL, FORK 0 pthread_create(&t2, ((void *)0), my_callback, (void *)d) VAL [__mptr={4:25}, arg={6:24}, arg={6:24}, d={6:24}, data={4:1}, data={6:0}, data={6:0}, dev={6:24}, lb=-6, pthread_create(&t2, ((void *)0), my_callback, (void *)d)=-9, res=0, t1={3:0}, t2={4:0}] [L1699] 1 data->shared.b = lb + 1 [L1701] 1 return 0; [L1689] 2 struct device *dev = (struct device*)arg; [L1690] 2 struct my_data *data; [L1691] 2 const typeof( ((struct my_data *)0)->dev ) *__mptr = (dev); [L1691] 2 { const typeof( ((struct my_data *)0)->dev ) *__mptr = (dev); (struct my_data *)( (char *)__mptr - ((unsigned long) &((struct my_data *)0)->dev) );} [L1691] 2 data = ({ const typeof( ((struct my_data *)0)->dev ) *__mptr = (dev); (struct my_data *)( (char *)__mptr - ((unsigned long) &((struct my_data *)0)->dev) );}) [L1693] 2 data->shared.a = 1 VAL [\result={0:0}, __mptr={4:-7}, arg={6:24}, arg={6:24}, data={4:-31}, dev={6:24}, lb=-6, t1={3:0}, t2={4:0}] [L1696] EXPR 2 data->shared.b [L1696] 2 int lb = data->shared.b; [L1699] 2 data->shared.b = lb + 1 [L1701] 2 return 0; [L1713] 0 return 0; [L1735] RET, EXPR 0 my_drv_probe(&data) [L1735] 0 probe_ret = my_drv_probe(&data) [L1736] COND TRUE 0 probe_ret==0 [L1737] CALL 0 my_drv_disconnect(&data) [L1719] 0 void *status; [L1720] 0 \read(t1) VAL [\read(t1)=-10, \result={0:0}, __mptr={4:-7}, arg={6:24}, arg={6:24}, data={4:1}, data={6:0}, data={6:0}, dev={6:24}, lb=-6, status={5:0}, t1={3:0}, t2={4:0}] [L1720] FCALL, JOIN 1 pthread_join(t1, &status) VAL [\read(t1)=-10, \result={0:0}, __mptr={4:-7}, arg={6:24}, arg={6:24}, data={4:1}, data={6:0}, data={6:0}, dev={6:24}, lb=-6, pthread_join(t1, &status)={0:0}, status={5:0}, t1={3:0}, t2={4:0}] [L1721] 0 \read(t2) VAL [\read(t2)=-9, \result={0:0}, __mptr={4:-7}, arg={6:24}, arg={6:24}, data={4:1}, data={6:0}, data={6:0}, dev={6:24}, lb=-6, status={5:0}, t1={3:0}, t2={4:0}] [L1721] FCALL, JOIN 2 pthread_join(t2, &status) VAL [\read(t2)=-9, \result={0:0}, __mptr={4:-7}, arg={6:24}, arg={6:24}, data={4:1}, data={6:0}, data={6:0}, dev={6:24}, lb=-6, pthread_join(t2, &status)={0:0}, status={5:0}, t1={3:0}, t2={4:0}] [L1737] RET 0 my_drv_disconnect(&data) [L1738] EXPR 0 data.shared.a [L1738] CALL 0 ldv_assert(data.shared.a==1) [L1675] COND TRUE 0 !expression [L1675] 0 reach_error() VAL [\old(expression)=0, \result={0:0}, __mptr={4:-7}, arg={6:24}, arg={6:24}, data={4:1}, dev={6:24}, expression=0, lb=-6, t1={3:0}, t2={4:0}] - UnprovableResult [Line: 1675]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1675]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1675]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1712]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 1711]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 4 procedures, 159 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: 9.9s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 8.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 19 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 19 mSDsluCounter, 1 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 149 IncrementalHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 1 mSDtfsCounter, 149 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=155occurred in iteration=2, InterpolantAutomatonStates: 9, 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, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 35 NumberOfCodeBlocks, 35 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 15 ConstructedInterpolants, 0 QuantifiedInterpolants, 105 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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! [2023-08-23 23:12:41,531 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...