/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_3-container_of.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-23 23:12:29,916 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-23 23:12:29,989 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 23:12:29,995 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-23 23:12:29,995 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-23 23:12:30,026 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-23 23:12:30,027 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-23 23:12:30,027 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-23 23:12:30,028 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-23 23:12:30,031 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-23 23:12:30,032 INFO L153 SettingsManager]: * Use SBE=true [2023-08-23 23:12:30,032 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-23 23:12:30,032 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-23 23:12:30,033 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-23 23:12:30,034 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-23 23:12:30,034 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-23 23:12:30,034 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-23 23:12:30,034 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-23 23:12:30,034 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-23 23:12:30,035 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-23 23:12:30,035 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-23 23:12:30,036 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-23 23:12:30,036 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-23 23:12:30,036 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-23 23:12:30,037 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-23 23:12:30,037 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-23 23:12:30,037 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-23 23:12:30,037 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-23 23:12:30,038 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-23 23:12:30,038 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-23 23:12:30,039 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-23 23:12:30,039 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-23 23:12:30,039 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-23 23:12:30,039 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-23 23:12:30,039 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-23 23:12:30,040 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-08-23 23:12:30,357 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-23 23:12:30,377 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-23 23:12:30,379 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-23 23:12:30,380 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-23 23:12:30,380 INFO L274 PluginConnector]: CDTParser initialized [2023-08-23 23:12:30,381 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-races/race-2_3-container_of.i [2023-08-23 23:12:31,597 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-23 23:12:31,911 INFO L384 CDTParser]: Found 1 translation units. [2023-08-23 23:12:31,912 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-2_3-container_of.i [2023-08-23 23:12:31,928 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32d4703ea/5e099af3e09f4b1693a4edff5f33888f/FLAGece23c9d3 [2023-08-23 23:12:31,940 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32d4703ea/5e099af3e09f4b1693a4edff5f33888f [2023-08-23 23:12:31,944 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-23 23:12:31,945 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-23 23:12:31,947 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-23 23:12:31,947 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-23 23:12:31,950 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-23 23:12:31,951 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.08 11:12:31" (1/1) ... [2023-08-23 23:12:31,952 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63a652da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:12:31, skipping insertion in model container [2023-08-23 23:12:31,952 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.08 11:12:31" (1/1) ... [2023-08-23 23:12:32,022 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-23 23:12:32,170 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-08-23 23:12:32,639 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_3-container_of.i[75002,75015] [2023-08-23 23:12:32,686 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-23 23:12:32,696 INFO L201 MainTranslator]: Completed pre-run [2023-08-23 23:12:32,707 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-08-23 23:12:32,729 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [251] [2023-08-23 23:12:32,730 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [251] [2023-08-23 23:12:32,735 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: unsigned short [735] [2023-08-23 23:12:32,751 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_3-container_of.i[75002,75015] [2023-08-23 23:12:32,753 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: unsigned long [1691] [2023-08-23 23:12:32,773 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-23 23:12:32,892 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-23 23:12:32,892 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-23 23:12:32,892 WARN L669 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-08-23 23:12:32,898 INFO L206 MainTranslator]: Completed translation [2023-08-23 23:12:32,899 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:12:32 WrapperNode [2023-08-23 23:12:32,899 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-23 23:12:32,900 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-23 23:12:32,900 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-23 23:12:32,900 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-23 23:12:32,906 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:12:32" (1/1) ... [2023-08-23 23:12:32,944 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:12:32" (1/1) ... [2023-08-23 23:12:32,983 INFO L138 Inliner]: procedures = 469, calls = 63, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 146 [2023-08-23 23:12:32,984 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-23 23:12:32,984 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-23 23:12:32,984 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-23 23:12:32,984 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-23 23:12:32,992 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:12:32" (1/1) ... [2023-08-23 23:12:32,992 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:12:32" (1/1) ... [2023-08-23 23:12:33,007 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:12:32" (1/1) ... [2023-08-23 23:12:33,007 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:12:32" (1/1) ... [2023-08-23 23:12:33,034 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:12:32" (1/1) ... [2023-08-23 23:12:33,036 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:12:32" (1/1) ... [2023-08-23 23:12:33,039 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:12:32" (1/1) ... [2023-08-23 23:12:33,041 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:12:32" (1/1) ... [2023-08-23 23:12:33,045 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-23 23:12:33,046 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-23 23:12:33,046 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-23 23:12:33,046 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-23 23:12:33,047 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:12:32" (1/1) ... [2023-08-23 23:12:33,063 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-23 23:12:33,073 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-23 23:12:33,084 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 23:12:33,087 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 23:12:33,110 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-23 23:12:33,110 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-23 23:12:33,111 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-23 23:12:33,111 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-23 23:12:33,111 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-23 23:12:33,111 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-23 23:12:33,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-08-23 23:12:33,111 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-23 23:12:33,111 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-23 23:12:33,111 INFO L130 BoogieDeclarations]: Found specification of procedure my_callback [2023-08-23 23:12:33,112 INFO L138 BoogieDeclarations]: Found implementation of procedure my_callback [2023-08-23 23:12:33,112 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-23 23:12:33,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-23 23:12:33,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-23 23:12:33,113 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 23:12:33,360 INFO L236 CfgBuilder]: Building ICFG [2023-08-23 23:12:33,362 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-23 23:12:33,561 INFO L277 CfgBuilder]: Performing block encoding [2023-08-23 23:12:33,596 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-23 23:12:33,596 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-23 23:12:33,598 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.08 11:12:33 BoogieIcfgContainer [2023-08-23 23:12:33,598 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-23 23:12:33,600 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-23 23:12:33,600 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-23 23:12:33,603 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-23 23:12:33,603 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.08 11:12:31" (1/3) ... [2023-08-23 23:12:33,604 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@93614b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.08 11:12:33, skipping insertion in model container [2023-08-23 23:12:33,604 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:12:32" (2/3) ... [2023-08-23 23:12:33,604 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@93614b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.08 11:12:33, skipping insertion in model container [2023-08-23 23:12:33,604 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.08 11:12:33" (3/3) ... [2023-08-23 23:12:33,605 INFO L112 eAbstractionObserver]: Analyzing ICFG race-2_3-container_of.i [2023-08-23 23:12:33,640 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-23 23:12:33,640 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-08-23 23:12:33,640 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-23 23:12:33,690 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-23 23:12:33,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 163 places, 163 transitions, 342 flow [2023-08-23 23:12:33,809 INFO L124 PetriNetUnfolderBase]: 8/203 cut-off events. [2023-08-23 23:12:33,809 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-23 23:12:33,814 INFO L83 FinitePrefix]: Finished finitePrefix Result has 212 conditions, 203 events. 8/203 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 364 event pairs, 0 based on Foata normal form. 0/185 useless extension candidates. Maximal degree in co-relation 107. Up to 4 conditions per place. [2023-08-23 23:12:33,818 INFO L82 GeneralOperation]: Start removeDead. Operand has 163 places, 163 transitions, 342 flow [2023-08-23 23:12:33,822 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 151 places, 149 transitions, 310 flow [2023-08-23 23:12:33,825 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-23 23:12:33,833 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 151 places, 149 transitions, 310 flow [2023-08-23 23:12:33,835 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 151 places, 149 transitions, 310 flow [2023-08-23 23:12:33,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 151 places, 149 transitions, 310 flow [2023-08-23 23:12:33,880 INFO L124 PetriNetUnfolderBase]: 5/180 cut-off events. [2023-08-23 23:12:33,880 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-23 23:12:33,882 INFO L83 FinitePrefix]: Finished finitePrefix Result has 189 conditions, 180 events. 5/180 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 298 event pairs, 0 based on Foata normal form. 0/167 useless extension candidates. Maximal degree in co-relation 95. Up to 4 conditions per place. [2023-08-23 23:12:33,885 INFO L119 LiptonReduction]: Number of co-enabled transitions 2940 [2023-08-23 23:12:42,646 INFO L134 LiptonReduction]: Checked pairs total: 7023 [2023-08-23 23:12:42,652 INFO L136 LiptonReduction]: Total number of compositions: 142 [2023-08-23 23:12:42,664 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-23 23:12:42,668 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;@15d607a0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-23 23:12:42,669 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2023-08-23 23:12:42,672 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-23 23:12:42,672 INFO L124 PetriNetUnfolderBase]: 0/11 cut-off events. [2023-08-23 23:12:42,672 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-23 23:12:42,673 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-23 23:12:42,673 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-23 23:12:42,674 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-08-23 23:12:42,677 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-23 23:12:42,677 INFO L85 PathProgramCache]: Analyzing trace with hash 566523982, now seen corresponding path program 1 times [2023-08-23 23:12:42,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-23 23:12:42,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500754930] [2023-08-23 23:12:42,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-23 23:12:42,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-23 23:12:42,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-23 23:12:43,199 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 23:12:43,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-23 23:12:43,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500754930] [2023-08-23 23:12:43,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500754930] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-23 23:12:43,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-23 23:12:43,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-23 23:12:43,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140165961] [2023-08-23 23:12:43,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-23 23:12:43,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-23 23:12:43,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-23 23:12:43,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-23 23:12:43,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-23 23:12:43,233 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 305 [2023-08-23 23:12:43,235 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 35 transitions, 82 flow. Second operand has 3 states, 3 states have (on average 115.66666666666667) internal successors, (347), 3 states have internal predecessors, (347), 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 23:12:43,235 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-23 23:12:43,235 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 305 [2023-08-23 23:12:43,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-23 23:12:43,512 INFO L124 PetriNetUnfolderBase]: 887/1487 cut-off events. [2023-08-23 23:12:43,513 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2023-08-23 23:12:43,516 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2999 conditions, 1487 events. 887/1487 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 7059 event pairs, 642 based on Foata normal form. 37/1343 useless extension candidates. Maximal degree in co-relation 2896. Up to 1268 conditions per place. [2023-08-23 23:12:43,523 INFO L140 encePairwiseOnDemand]: 297/305 looper letters, 40 selfloop transitions, 6 changer transitions 0/46 dead transitions. [2023-08-23 23:12:43,524 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 46 transitions, 196 flow [2023-08-23 23:12:43,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-23 23:12:43,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-23 23:12:43,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 391 transitions. [2023-08-23 23:12:43,536 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4273224043715847 [2023-08-23 23:12:43,536 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 391 transitions. [2023-08-23 23:12:43,537 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 391 transitions. [2023-08-23 23:12:43,538 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-23 23:12:43,540 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 391 transitions. [2023-08-23 23:12:43,542 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 130.33333333333334) internal successors, (391), 3 states have internal predecessors, (391), 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 23:12:43,546 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 305.0) internal successors, (1220), 4 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) [2023-08-23 23:12:43,547 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 305.0) internal successors, (1220), 4 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) [2023-08-23 23:12:43,549 INFO L175 Difference]: Start difference. First operand has 39 places, 35 transitions, 82 flow. Second operand 3 states and 391 transitions. [2023-08-23 23:12:43,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 46 transitions, 196 flow [2023-08-23 23:12:43,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 46 transitions, 188 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-23 23:12:43,554 INFO L231 Difference]: Finished difference. Result has 38 places, 38 transitions, 108 flow [2023-08-23 23:12:43,555 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=108, PETRI_PLACES=38, PETRI_TRANSITIONS=38} [2023-08-23 23:12:43,558 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -1 predicate places. [2023-08-23 23:12:43,558 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 38 transitions, 108 flow [2023-08-23 23:12:43,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 115.66666666666667) internal successors, (347), 3 states have internal predecessors, (347), 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 23:12:43,558 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-23 23:12:43,558 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-23 23:12:43,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-23 23:12:43,559 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-08-23 23:12:43,559 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-23 23:12:43,559 INFO L85 PathProgramCache]: Analyzing trace with hash 18274976, now seen corresponding path program 1 times [2023-08-23 23:12:43,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-23 23:12:43,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684581704] [2023-08-23 23:12:43,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-23 23:12:43,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-23 23:12:43,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-23 23:12:43,757 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 23:12:43,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-23 23:12:43,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684581704] [2023-08-23 23:12:43,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684581704] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-23 23:12:43,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-23 23:12:43,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-23 23:12:43,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130509087] [2023-08-23 23:12:43,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-23 23:12:43,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-23 23:12:43,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-23 23:12:43,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-23 23:12:43,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-23 23:12:43,762 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 305 [2023-08-23 23:12:43,763 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 38 transitions, 108 flow. Second operand has 3 states, 3 states have (on average 115.33333333333333) internal successors, (346), 3 states have internal predecessors, (346), 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 23:12:43,763 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-23 23:12:43,764 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 305 [2023-08-23 23:12:43,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-23 23:12:44,040 INFO L124 PetriNetUnfolderBase]: 1003/1694 cut-off events. [2023-08-23 23:12:44,040 INFO L125 PetriNetUnfolderBase]: For 382/382 co-relation queries the response was YES. [2023-08-23 23:12:44,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4043 conditions, 1694 events. 1003/1694 cut-off events. For 382/382 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 8418 event pairs, 718 based on Foata normal form. 0/1519 useless extension candidates. Maximal degree in co-relation 2139. Up to 1475 conditions per place. [2023-08-23 23:12:44,050 INFO L140 encePairwiseOnDemand]: 298/305 looper letters, 43 selfloop transitions, 9 changer transitions 2/54 dead transitions. [2023-08-23 23:12:44,050 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 54 transitions, 271 flow [2023-08-23 23:12:44,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-23 23:12:44,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-23 23:12:44,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 389 transitions. [2023-08-23 23:12:44,055 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42513661202185793 [2023-08-23 23:12:44,055 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 389 transitions. [2023-08-23 23:12:44,055 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 389 transitions. [2023-08-23 23:12:44,056 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-23 23:12:44,056 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 389 transitions. [2023-08-23 23:12:44,057 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 129.66666666666666) internal successors, (389), 3 states have internal predecessors, (389), 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 23:12:44,060 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 305.0) internal successors, (1220), 4 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) [2023-08-23 23:12:44,060 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 305.0) internal successors, (1220), 4 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) [2023-08-23 23:12:44,060 INFO L175 Difference]: Start difference. First operand has 38 places, 38 transitions, 108 flow. Second operand 3 states and 389 transitions. [2023-08-23 23:12:44,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 54 transitions, 271 flow [2023-08-23 23:12:44,068 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 54 transitions, 260 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-23 23:12:44,070 INFO L231 Difference]: Finished difference. Result has 40 places, 44 transitions, 173 flow [2023-08-23 23:12:44,073 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=173, PETRI_PLACES=40, PETRI_TRANSITIONS=44} [2023-08-23 23:12:44,077 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 1 predicate places. [2023-08-23 23:12:44,078 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 44 transitions, 173 flow [2023-08-23 23:12:44,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 115.33333333333333) internal successors, (346), 3 states have internal predecessors, (346), 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 23:12:44,078 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-23 23:12:44,078 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-23 23:12:44,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-23 23:12:44,079 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-08-23 23:12:44,081 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-23 23:12:44,081 INFO L85 PathProgramCache]: Analyzing trace with hash -593821687, now seen corresponding path program 1 times [2023-08-23 23:12:44,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-23 23:12:44,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788129927] [2023-08-23 23:12:44,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-23 23:12:44,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-23 23:12:44,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-23 23:12:44,269 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 23:12:44,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-23 23:12:44,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788129927] [2023-08-23 23:12:44,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788129927] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-23 23:12:44,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-23 23:12:44,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-23 23:12:44,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844743412] [2023-08-23 23:12:44,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-23 23:12:44,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-23 23:12:44,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-23 23:12:44,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-23 23:12:44,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-23 23:12:44,273 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 305 [2023-08-23 23:12:44,274 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 44 transitions, 173 flow. Second operand has 3 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 23:12:44,274 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-23 23:12:44,275 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 305 [2023-08-23 23:12:44,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-23 23:12:44,598 INFO L124 PetriNetUnfolderBase]: 1317/2197 cut-off events. [2023-08-23 23:12:44,598 INFO L125 PetriNetUnfolderBase]: For 1252/1252 co-relation queries the response was YES. [2023-08-23 23:12:44,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5814 conditions, 2197 events. 1317/2197 cut-off events. For 1252/1252 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 11573 event pairs, 618 based on Foata normal form. 0/2096 useless extension candidates. Maximal degree in co-relation 3185. Up to 1725 conditions per place. [2023-08-23 23:12:44,611 INFO L140 encePairwiseOnDemand]: 296/305 looper letters, 54 selfloop transitions, 8 changer transitions 0/62 dead transitions. [2023-08-23 23:12:44,611 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 62 transitions, 353 flow [2023-08-23 23:12:44,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-23 23:12:44,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-23 23:12:44,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 402 transitions. [2023-08-23 23:12:44,613 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43934426229508194 [2023-08-23 23:12:44,613 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 402 transitions. [2023-08-23 23:12:44,613 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 402 transitions. [2023-08-23 23:12:44,614 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-23 23:12:44,614 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 402 transitions. [2023-08-23 23:12:44,615 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 134.0) internal successors, (402), 3 states have internal predecessors, (402), 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 23:12:44,617 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 305.0) internal successors, (1220), 4 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) [2023-08-23 23:12:44,617 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 305.0) internal successors, (1220), 4 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) [2023-08-23 23:12:44,617 INFO L175 Difference]: Start difference. First operand has 40 places, 44 transitions, 173 flow. Second operand 3 states and 402 transitions. [2023-08-23 23:12:44,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 62 transitions, 353 flow [2023-08-23 23:12:44,621 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 62 transitions, 343 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-23 23:12:44,623 INFO L231 Difference]: Finished difference. Result has 43 places, 51 transitions, 244 flow [2023-08-23 23:12:44,623 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=244, PETRI_PLACES=43, PETRI_TRANSITIONS=51} [2023-08-23 23:12:44,624 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 4 predicate places. [2023-08-23 23:12:44,624 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 51 transitions, 244 flow [2023-08-23 23:12:44,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 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 23:12:44,624 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-23 23:12:44,625 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-23 23:12:44,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-23 23:12:44,625 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-08-23 23:12:44,625 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-23 23:12:44,625 INFO L85 PathProgramCache]: Analyzing trace with hash -1228602775, now seen corresponding path program 1 times [2023-08-23 23:12:44,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-23 23:12:44,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666535522] [2023-08-23 23:12:44,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-23 23:12:44,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-23 23:12:44,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-23 23:12:44,759 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 23:12:44,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-23 23:12:44,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666535522] [2023-08-23 23:12:44,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666535522] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-23 23:12:44,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-23 23:12:44,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-23 23:12:44,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794630494] [2023-08-23 23:12:44,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-23 23:12:44,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-23 23:12:44,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-23 23:12:44,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-23 23:12:44,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-23 23:12:44,763 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 305 [2023-08-23 23:12:44,763 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 51 transitions, 244 flow. Second operand has 3 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 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 23:12:44,764 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-23 23:12:44,764 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 305 [2023-08-23 23:12:44,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-23 23:12:45,082 INFO L124 PetriNetUnfolderBase]: 1580/2622 cut-off events. [2023-08-23 23:12:45,083 INFO L125 PetriNetUnfolderBase]: For 3343/3343 co-relation queries the response was YES. [2023-08-23 23:12:45,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7961 conditions, 2622 events. 1580/2622 cut-off events. For 3343/3343 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 14106 event pairs, 734 based on Foata normal form. 0/2557 useless extension candidates. Maximal degree in co-relation 687. Up to 1997 conditions per place. [2023-08-23 23:12:45,100 INFO L140 encePairwiseOnDemand]: 296/305 looper letters, 58 selfloop transitions, 14 changer transitions 0/72 dead transitions. [2023-08-23 23:12:45,100 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 72 transitions, 499 flow [2023-08-23 23:12:45,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-23 23:12:45,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-23 23:12:45,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 401 transitions. [2023-08-23 23:12:45,102 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4382513661202186 [2023-08-23 23:12:45,103 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 401 transitions. [2023-08-23 23:12:45,103 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 401 transitions. [2023-08-23 23:12:45,103 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-23 23:12:45,103 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 401 transitions. [2023-08-23 23:12:45,104 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 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 23:12:45,105 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 305.0) internal successors, (1220), 4 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) [2023-08-23 23:12:45,106 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 305.0) internal successors, (1220), 4 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) [2023-08-23 23:12:45,106 INFO L175 Difference]: Start difference. First operand has 43 places, 51 transitions, 244 flow. Second operand 3 states and 401 transitions. [2023-08-23 23:12:45,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 72 transitions, 499 flow [2023-08-23 23:12:45,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 72 transitions, 441 flow, removed 16 selfloop flow, removed 2 redundant places. [2023-08-23 23:12:45,115 INFO L231 Difference]: Finished difference. Result has 45 places, 62 transitions, 352 flow [2023-08-23 23:12:45,115 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=352, PETRI_PLACES=45, PETRI_TRANSITIONS=62} [2023-08-23 23:12:45,116 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 6 predicate places. [2023-08-23 23:12:45,116 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 62 transitions, 352 flow [2023-08-23 23:12:45,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 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 23:12:45,117 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-23 23:12:45,117 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-23 23:12:45,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-23 23:12:45,117 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-08-23 23:12:45,117 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-23 23:12:45,117 INFO L85 PathProgramCache]: Analyzing trace with hash 482260769, now seen corresponding path program 1 times [2023-08-23 23:12:45,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-23 23:12:45,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127496400] [2023-08-23 23:12:45,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-23 23:12:45,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-23 23:12:45,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-23 23:12:45,165 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-23 23:12:45,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-23 23:12:45,219 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-23 23:12:45,219 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-23 23:12:45,220 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (7 of 8 remaining) [2023-08-23 23:12:45,222 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (6 of 8 remaining) [2023-08-23 23:12:45,222 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (5 of 8 remaining) [2023-08-23 23:12:45,223 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (4 of 8 remaining) [2023-08-23 23:12:45,225 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (3 of 8 remaining) [2023-08-23 23:12:45,226 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (2 of 8 remaining) [2023-08-23 23:12:45,227 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 8 remaining) [2023-08-23 23:12:45,227 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 8 remaining) [2023-08-23 23:12:45,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-23 23:12:45,227 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-08-23 23:12:45,232 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-23 23:12:45,232 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-23 23:12:45,269 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.08 11:12:45 BasicIcfg [2023-08-23 23:12:45,269 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-23 23:12:45,269 INFO L158 Benchmark]: Toolchain (without parser) took 13323.99ms. Allocated memory was 379.6MB in the beginning and 551.6MB in the end (delta: 172.0MB). Free memory was 352.4MB in the beginning and 231.1MB in the end (delta: 121.4MB). Peak memory consumption was 293.9MB. Max. memory is 16.0GB. [2023-08-23 23:12:45,270 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 379.6MB. Free memory was 357.0MB in the beginning and 356.9MB in the end (delta: 94.3kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-23 23:12:45,270 INFO L158 Benchmark]: CACSL2BoogieTranslator took 951.56ms. Allocated memory is still 379.6MB. Free memory was 352.4MB in the beginning and 296.7MB in the end (delta: 55.7MB). Peak memory consumption was 54.5MB. Max. memory is 16.0GB. [2023-08-23 23:12:45,270 INFO L158 Benchmark]: Boogie Procedure Inliner took 84.04ms. Allocated memory is still 379.6MB. Free memory was 296.7MB in the beginning and 293.1MB in the end (delta: 3.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-23 23:12:45,271 INFO L158 Benchmark]: Boogie Preprocessor took 60.87ms. Allocated memory is still 379.6MB. Free memory was 293.1MB in the beginning and 290.4MB in the end (delta: 2.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2023-08-23 23:12:45,272 INFO L158 Benchmark]: RCFGBuilder took 552.55ms. Allocated memory is still 379.6MB. Free memory was 290.4MB in the beginning and 262.8MB in the end (delta: 27.6MB). Peak memory consumption was 27.3MB. Max. memory is 16.0GB. [2023-08-23 23:12:45,272 INFO L158 Benchmark]: TraceAbstraction took 11668.90ms. Allocated memory was 379.6MB in the beginning and 551.6MB in the end (delta: 172.0MB). Free memory was 262.2MB in the beginning and 231.1MB in the end (delta: 31.2MB). Peak memory consumption was 203.7MB. Max. memory is 16.0GB. [2023-08-23 23:12:45,274 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 379.6MB. Free memory was 357.0MB in the beginning and 356.9MB in the end (delta: 94.3kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 951.56ms. Allocated memory is still 379.6MB. Free memory was 352.4MB in the beginning and 296.7MB in the end (delta: 55.7MB). Peak memory consumption was 54.5MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 84.04ms. Allocated memory is still 379.6MB. Free memory was 296.7MB in the beginning and 293.1MB in the end (delta: 3.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 60.87ms. Allocated memory is still 379.6MB. Free memory was 293.1MB in the beginning and 290.4MB in the end (delta: 2.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * RCFGBuilder took 552.55ms. Allocated memory is still 379.6MB. Free memory was 290.4MB in the beginning and 262.8MB in the end (delta: 27.6MB). Peak memory consumption was 27.3MB. Max. memory is 16.0GB. * TraceAbstraction took 11668.90ms. Allocated memory was 379.6MB in the beginning and 551.6MB in the end (delta: 172.0MB). Free memory was 262.2MB in the beginning and 231.1MB in the end (delta: 31.2MB). Peak memory consumption was 203.7MB. 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: 8.8s, 151 PlacesBefore, 39 PlacesAfterwards, 149 TransitionsBefore, 35 TransitionsAfterwards, 2940 CoEnabledTransitionPairs, 7 FixpointIterations, 70 TrivialSequentialCompositions, 50 ConcurrentSequentialCompositions, 4 TrivialYvCompositions, 16 ConcurrentYvCompositions, 2 ChoiceCompositions, 142 TotalNumberOfCompositions, 7023 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2923, independent: 2650, independent conditional: 0, independent unconditional: 2650, dependent: 273, dependent conditional: 0, dependent unconditional: 273, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1552, independent: 1499, independent conditional: 0, independent unconditional: 1499, dependent: 53, dependent conditional: 0, dependent unconditional: 53, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2923, independent: 1151, independent conditional: 0, independent unconditional: 1151, dependent: 220, dependent conditional: 0, dependent unconditional: 220, unknown: 1552, unknown conditional: 0, unknown unconditional: 1552] , Statistics on independence cache: Total cache size (in pairs): 106, Positive cache size: 82, Positive conditional cache size: 0, Positive unconditional cache size: 82, Negative cache size: 24, Negative conditional cache size: 0, Negative unconditional cache size: 24, 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; [L1745] CALL, EXPR 0 my_drv_init() [L1739] 0 return 0; [L1745] RET, EXPR 0 my_drv_init() [L1745] 0 int ret = my_drv_init(); [L1746] COND TRUE 0 ret==0 [L1747] 0 int probe_ret; [L1748] 0 struct my_data data; [L1749] CALL 0 my_drv_probe(&data) [L1706] 0 struct device *d = &data->dev; [L1708] 0 data->shared.a = 0 [L1709] 0 data->shared.b = 0 [L1710] 0 int res = __VERIFIER_nondet_int(); [L1711] COND FALSE 0 !(\read(res)) [L1713] FCALL, FORK 0 pthread_create(&t1, ((void *)0), my_callback, (void *)d) VAL [arg={5:24}, d={5:24}, data={5:0}, data={5:0}, pthread_create(&t1, ((void *)0), my_callback, (void *)d)=-1, 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) );}) [L1714] FCALL, FORK 0 pthread_create(&t2, ((void *)0), my_callback, (void *)d) VAL [__mptr={5:24}, arg={5:24}, arg={5:24}, d={5:24}, data={5:0}, data={5:0}, data={5:0}, dev={5:24}, pthread_create(&t2, ((void *)0), my_callback, (void *)d)=0, pthread_mutex_lock (&data->lock)=0, res=0, t1={3:0}, t2={4:0}] [L1716] 0 data->shared.a = 3 VAL [__mptr={5:24}, arg={5:24}, arg={5:24}, d={5:24}, data={5:0}, data={5:0}, data={5:0}, dev={5:24}, pthread_mutex_lock (&data->lock)=0, res=0, t1={3:0}, t2={4:0}] [L1694] 1 data->shared.a = 1 VAL [__mptr={5:24}, arg={5:24}, arg={5:24}, data={5:0}, dev={5:24}, t1={3:0}, t2={4:0}] [L1719] 0 data->shared.b = 3 VAL [__mptr={5:24}, arg={5:24}, arg={5:24}, d={5:24}, data={5:0}, data={5:0}, data={5:0}, dev={5:24}, res=0, t1={3:0}, t2={4:0}] [L1722] EXPR 0 data->shared.a [L1722] CALL 0 ldv_assert(data->shared.a==3) [L1675] COND TRUE 0 !expression [L1675] 0 reach_error() VAL [\old(expression)=0, __mptr={5:24}, arg={5:24}, arg={5:24}, data={5:0}, dev={5:24}, expression=0, 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: 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: 1713]: 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: 1714]: 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, 174 locations, 8 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 11.5s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 8.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 35 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 35 mSDsluCounter, 18 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 294 IncrementalHoareTripleChecker+Invalid, 298 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 18 mSDtfsCounter, 294 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=352occurred in iteration=4, InterpolantAutomatonStates: 12, 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, 0.8s InterpolantComputationTime, 33 NumberOfCodeBlocks, 33 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 140 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 RESULT: Ultimate proved your program to be incorrect! [2023-08-23 23:12:45,292 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...