/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.order.of.the.error.locations.to.be.checked INSUFFICIENT_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true -i ../../../trunk/examples/svcomp/ldv-races/race-2_3-container_of.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-27 03:59:42,617 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-27 03:59:42,705 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 [2023-08-27 03:59:42,711 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-27 03:59:42,712 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-27 03:59:42,744 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-27 03:59:42,745 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-27 03:59:42,750 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-27 03:59:42,750 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-27 03:59:42,754 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-27 03:59:42,754 INFO L153 SettingsManager]: * Use SBE=true [2023-08-27 03:59:42,755 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-27 03:59:42,755 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-27 03:59:42,755 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-27 03:59:42,755 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-27 03:59:42,756 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-27 03:59:42,756 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-27 03:59:42,756 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-27 03:59:42,756 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-27 03:59:42,756 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-27 03:59:42,757 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-27 03:59:42,759 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-27 03:59:42,759 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-27 03:59:42,759 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-27 03:59:42,760 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-27 03:59:42,760 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-27 03:59:42,760 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-27 03:59:42,760 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 03:59:42,761 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-27 03:59:42,761 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-27 03:59:42,762 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-27 03:59:42,762 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-27 03:59:42,762 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-27 03:59:42,762 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-27 03:59:42,762 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-27 03:59:42,763 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-27 03:59:43,089 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-27 03:59:43,108 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-27 03:59:43,111 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-27 03:59:43,113 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-27 03:59:43,113 INFO L274 PluginConnector]: CDTParser initialized [2023-08-27 03:59:43,114 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-races/race-2_3-container_of.i [2023-08-27 03:59:44,251 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-27 03:59:44,608 INFO L384 CDTParser]: Found 1 translation units. [2023-08-27 03:59:44,609 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-2_3-container_of.i [2023-08-27 03:59:44,637 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/00557b4f1/0ff4055de63f48d1b5632359c00ceb69/FLAGe4c569f19 [2023-08-27 03:59:44,654 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/00557b4f1/0ff4055de63f48d1b5632359c00ceb69 [2023-08-27 03:59:44,659 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-27 03:59:44,660 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-27 03:59:44,661 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-27 03:59:44,661 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-27 03:59:44,663 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-27 03:59:44,665 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 03:59:44" (1/1) ... [2023-08-27 03:59:44,665 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6900f9e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:59:44, skipping insertion in model container [2023-08-27 03:59:44,666 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 03:59:44" (1/1) ... [2023-08-27 03:59:44,747 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-27 03:59:44,887 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-08-27 03:59:45,447 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 03:59:45,458 INFO L201 MainTranslator]: Completed pre-run [2023-08-27 03:59:45,467 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-08-27 03:59:45,477 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [251] [2023-08-27 03:59:45,478 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [251] [2023-08-27 03:59:45,483 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: unsigned short [735] [2023-08-27 03:59:45,495 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: unsigned long [1691] [2023-08-27 03:59:45,505 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 03:59:45,615 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 03:59:45,615 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 03:59:45,615 WARN L669 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 03:59:45,621 INFO L206 MainTranslator]: Completed translation [2023-08-27 03:59:45,621 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:59:45 WrapperNode [2023-08-27 03:59:45,622 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-27 03:59:45,623 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-27 03:59:45,623 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-27 03:59:45,623 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-27 03:59:45,628 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:59:45" (1/1) ... [2023-08-27 03:59:45,661 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:59:45" (1/1) ... [2023-08-27 03:59:45,709 INFO L138 Inliner]: procedures = 469, calls = 64, calls flagged for inlining = 13, calls inlined = 18, statements flattened = 164 [2023-08-27 03:59:45,710 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-27 03:59:45,710 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-27 03:59:45,710 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-27 03:59:45,711 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-27 03:59:45,734 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:59:45" (1/1) ... [2023-08-27 03:59:45,734 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:59:45" (1/1) ... [2023-08-27 03:59:45,744 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:59:45" (1/1) ... [2023-08-27 03:59:45,744 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:59:45" (1/1) ... [2023-08-27 03:59:45,759 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:59:45" (1/1) ... [2023-08-27 03:59:45,761 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:59:45" (1/1) ... [2023-08-27 03:59:45,766 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:59:45" (1/1) ... [2023-08-27 03:59:45,768 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:59:45" (1/1) ... [2023-08-27 03:59:45,773 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-27 03:59:45,774 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-27 03:59:45,774 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-27 03:59:45,774 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-27 03:59:45,775 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:59:45" (1/1) ... [2023-08-27 03:59:45,779 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 03:59:45,805 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 03:59:45,818 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) [2023-08-27 03:59:45,820 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 [2023-08-27 03:59:45,847 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-27 03:59:45,848 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-27 03:59:45,848 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-27 03:59:45,848 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-27 03:59:45,848 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-27 03:59:45,848 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-27 03:59:45,848 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-08-27 03:59:45,848 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-27 03:59:45,850 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-27 03:59:45,850 INFO L130 BoogieDeclarations]: Found specification of procedure my_callback [2023-08-27 03:59:45,850 INFO L138 BoogieDeclarations]: Found implementation of procedure my_callback [2023-08-27 03:59:45,850 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-27 03:59:45,850 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-27 03:59:45,850 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-27 03:59:45,852 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-27 03:59:46,096 INFO L236 CfgBuilder]: Building ICFG [2023-08-27 03:59:46,098 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-27 03:59:46,384 INFO L277 CfgBuilder]: Performing block encoding [2023-08-27 03:59:46,451 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-27 03:59:46,452 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-27 03:59:46,456 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 03:59:46 BoogieIcfgContainer [2023-08-27 03:59:46,456 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-27 03:59:46,459 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-27 03:59:46,459 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-27 03:59:46,462 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-27 03:59:46,462 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 03:59:44" (1/3) ... [2023-08-27 03:59:46,463 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@549edda0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 03:59:46, skipping insertion in model container [2023-08-27 03:59:46,463 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:59:45" (2/3) ... [2023-08-27 03:59:46,464 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@549edda0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 03:59:46, skipping insertion in model container [2023-08-27 03:59:46,464 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 03:59:46" (3/3) ... [2023-08-27 03:59:46,465 INFO L112 eAbstractionObserver]: Analyzing ICFG race-2_3-container_of.i [2023-08-27 03:59:46,480 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-27 03:59:46,480 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-08-27 03:59:46,481 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-27 03:59:46,543 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-27 03:59:46,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 179 places, 183 transitions, 382 flow [2023-08-27 03:59:46,662 INFO L124 PetriNetUnfolderBase]: 14/231 cut-off events. [2023-08-27 03:59:46,662 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-27 03:59:46,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 240 conditions, 231 events. 14/231 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 469 event pairs, 0 based on Foata normal form. 0/203 useless extension candidates. Maximal degree in co-relation 117. Up to 4 conditions per place. [2023-08-27 03:59:46,674 INFO L82 GeneralOperation]: Start removeDead. Operand has 179 places, 183 transitions, 382 flow [2023-08-27 03:59:46,679 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 177 places, 180 transitions, 372 flow [2023-08-27 03:59:46,682 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 03:59:46,689 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 177 places, 180 transitions, 372 flow [2023-08-27 03:59:46,691 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 177 places, 180 transitions, 372 flow [2023-08-27 03:59:46,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 177 places, 180 transitions, 372 flow [2023-08-27 03:59:46,737 INFO L124 PetriNetUnfolderBase]: 13/230 cut-off events. [2023-08-27 03:59:46,737 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-27 03:59:46,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 239 conditions, 230 events. 13/230 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 472 event pairs, 0 based on Foata normal form. 0/203 useless extension candidates. Maximal degree in co-relation 116. Up to 4 conditions per place. [2023-08-27 03:59:46,741 INFO L119 LiptonReduction]: Number of co-enabled transitions 4640 [2023-08-27 03:59:56,663 INFO L134 LiptonReduction]: Checked pairs total: 12345 [2023-08-27 03:59:56,664 INFO L136 LiptonReduction]: Total number of compositions: 200 [2023-08-27 03:59:56,675 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 03:59:56,680 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;@1807458a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 03:59:56,680 INFO L358 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2023-08-27 03:59:56,683 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 03:59:56,684 INFO L124 PetriNetUnfolderBase]: 0/10 cut-off events. [2023-08-27 03:59:56,684 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 03:59:56,684 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 03:59:56,684 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-27 03:59:56,685 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT (and 11 more)] === [2023-08-27 03:59:56,688 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 03:59:56,688 INFO L85 PathProgramCache]: Analyzing trace with hash 22653096, now seen corresponding path program 1 times [2023-08-27 03:59:56,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 03:59:56,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650290337] [2023-08-27 03:59:56,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 03:59:56,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 03:59:56,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 03:59:57,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 03:59:57,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 03:59:57,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650290337] [2023-08-27 03:59:57,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650290337] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 03:59:57,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 03:59:57,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 03:59:57,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778456181] [2023-08-27 03:59:57,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 03:59:57,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 03:59:57,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 03:59:57,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 03:59:57,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 03:59:57,258 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 383 [2023-08-27 03:59:57,261 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 39 transitions, 90 flow. Second operand has 3 states, 3 states have (on average 129.33333333333334) internal successors, (388), 3 states have internal predecessors, (388), 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) [2023-08-27 03:59:57,261 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 03:59:57,261 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 383 [2023-08-27 03:59:57,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 03:59:57,734 INFO L124 PetriNetUnfolderBase]: 1949/3132 cut-off events. [2023-08-27 03:59:57,735 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2023-08-27 03:59:57,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6295 conditions, 3132 events. 1949/3132 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 16986 event pairs, 1258 based on Foata normal form. 0/2165 useless extension candidates. Maximal degree in co-relation 6164. Up to 2492 conditions per place. [2023-08-27 03:59:57,758 INFO L140 encePairwiseOnDemand]: 374/383 looper letters, 49 selfloop transitions, 8 changer transitions 0/57 dead transitions. [2023-08-27 03:59:57,758 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 57 transitions, 240 flow [2023-08-27 03:59:57,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 03:59:57,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 03:59:57,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 442 transitions. [2023-08-27 03:59:57,772 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3846823324630113 [2023-08-27 03:59:57,772 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 442 transitions. [2023-08-27 03:59:57,773 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 442 transitions. [2023-08-27 03:59:57,774 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 03:59:57,776 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 442 transitions. [2023-08-27 03:59:57,780 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 147.33333333333334) internal successors, (442), 3 states have internal predecessors, (442), 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) [2023-08-27 03:59:57,784 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 383.0) internal successors, (1532), 4 states have internal predecessors, (1532), 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) [2023-08-27 03:59:57,785 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 383.0) internal successors, (1532), 4 states have internal predecessors, (1532), 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) [2023-08-27 03:59:57,787 INFO L175 Difference]: Start difference. First operand has 44 places, 39 transitions, 90 flow. Second operand 3 states and 442 transitions. [2023-08-27 03:59:57,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 57 transitions, 240 flow [2023-08-27 03:59:57,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 57 transitions, 232 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-27 03:59:57,794 INFO L231 Difference]: Finished difference. Result has 44 places, 45 transitions, 140 flow [2023-08-27 03:59:57,796 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=383, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=140, PETRI_PLACES=44, PETRI_TRANSITIONS=45} [2023-08-27 03:59:57,798 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 0 predicate places. [2023-08-27 03:59:57,799 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 45 transitions, 140 flow [2023-08-27 03:59:57,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 129.33333333333334) internal successors, (388), 3 states have internal predecessors, (388), 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) [2023-08-27 03:59:57,799 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 03:59:57,799 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-27 03:59:57,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-27 03:59:57,800 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting my_callbackErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT (and 11 more)] === [2023-08-27 03:59:57,800 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 03:59:57,800 INFO L85 PathProgramCache]: Analyzing trace with hash 698243513, now seen corresponding path program 1 times [2023-08-27 03:59:57,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 03:59:57,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138364838] [2023-08-27 03:59:57,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 03:59:57,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 03:59:57,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 03:59:57,828 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 03:59:57,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 03:59:57,860 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 03:59:57,860 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 03:59:57,862 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location my_callbackErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 14 remaining) [2023-08-27 03:59:57,863 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (12 of 14 remaining) [2023-08-27 03:59:57,863 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONASSERT (11 of 14 remaining) [2023-08-27 03:59:57,864 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONASSERT (10 of 14 remaining) [2023-08-27 03:59:57,864 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONASSERT (9 of 14 remaining) [2023-08-27 03:59:57,864 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (8 of 14 remaining) [2023-08-27 03:59:57,864 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONASSERT (7 of 14 remaining) [2023-08-27 03:59:57,864 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 14 remaining) [2023-08-27 03:59:57,864 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 14 remaining) [2023-08-27 03:59:57,865 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location my_callbackErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 14 remaining) [2023-08-27 03:59:57,865 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location my_callbackErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 14 remaining) [2023-08-27 03:59:57,865 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location my_callbackErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 14 remaining) [2023-08-27 03:59:57,865 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location my_callbackErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 14 remaining) [2023-08-27 03:59:57,865 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location my_callbackErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 14 remaining) [2023-08-27 03:59:57,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-27 03:59:57,866 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-27 03:59:57,871 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-27 03:59:57,871 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-27 03:59:57,890 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 03:59:57 BasicIcfg [2023-08-27 03:59:57,890 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-27 03:59:57,891 INFO L158 Benchmark]: Toolchain (without parser) took 13230.91ms. Allocated memory was 371.2MB in the beginning and 455.1MB in the end (delta: 83.9MB). Free memory was 344.0MB in the beginning and 328.5MB in the end (delta: 15.5MB). Peak memory consumption was 99.9MB. Max. memory is 16.0GB. [2023-08-27 03:59:57,891 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 371.2MB. Free memory is still 348.9MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-27 03:59:57,892 INFO L158 Benchmark]: CACSL2BoogieTranslator took 960.99ms. Allocated memory is still 371.2MB. Free memory was 344.0MB in the beginning and 288.4MB in the end (delta: 55.6MB). Peak memory consumption was 54.5MB. Max. memory is 16.0GB. [2023-08-27 03:59:57,892 INFO L158 Benchmark]: Boogie Procedure Inliner took 87.24ms. Allocated memory is still 371.2MB. Free memory was 288.4MB in the beginning and 347.0MB in the end (delta: -58.6MB). Peak memory consumption was 10.7MB. Max. memory is 16.0GB. [2023-08-27 03:59:57,893 INFO L158 Benchmark]: Boogie Preprocessor took 62.77ms. Allocated memory is still 371.2MB. Free memory was 347.0MB in the beginning and 344.3MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 03:59:57,893 INFO L158 Benchmark]: RCFGBuilder took 682.71ms. Allocated memory is still 371.2MB. Free memory was 344.3MB in the beginning and 313.9MB in the end (delta: 30.4MB). Peak memory consumption was 31.5MB. Max. memory is 16.0GB. [2023-08-27 03:59:57,894 INFO L158 Benchmark]: TraceAbstraction took 11431.50ms. Allocated memory was 371.2MB in the beginning and 455.1MB in the end (delta: 83.9MB). Free memory was 312.8MB in the beginning and 328.5MB in the end (delta: -15.7MB). Peak memory consumption was 70.3MB. Max. memory is 16.0GB. [2023-08-27 03:59:57,895 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 371.2MB. Free memory is still 348.9MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 960.99ms. Allocated memory is still 371.2MB. Free memory was 344.0MB in the beginning and 288.4MB in the end (delta: 55.6MB). Peak memory consumption was 54.5MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 87.24ms. Allocated memory is still 371.2MB. Free memory was 288.4MB in the beginning and 347.0MB in the end (delta: -58.6MB). Peak memory consumption was 10.7MB. Max. memory is 16.0GB. * Boogie Preprocessor took 62.77ms. Allocated memory is still 371.2MB. Free memory was 347.0MB in the beginning and 344.3MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 682.71ms. Allocated memory is still 371.2MB. Free memory was 344.3MB in the beginning and 313.9MB in the end (delta: 30.4MB). Peak memory consumption was 31.5MB. Max. memory is 16.0GB. * TraceAbstraction took 11431.50ms. Allocated memory was 371.2MB in the beginning and 455.1MB in the end (delta: 83.9MB). Free memory was 312.8MB in the beginning and 328.5MB in the end (delta: -15.7MB). Peak memory consumption was 70.3MB. 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: 10.0s, 177 PlacesBefore, 44 PlacesAfterwards, 180 TransitionsBefore, 39 TransitionsAfterwards, 4640 CoEnabledTransitionPairs, 7 FixpointIterations, 81 TrivialSequentialCompositions, 74 ConcurrentSequentialCompositions, 11 TrivialYvCompositions, 26 ConcurrentYvCompositions, 8 ChoiceCompositions, 200 TotalNumberOfCompositions, 12345 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 4560, independent: 4216, independent conditional: 0, independent unconditional: 4216, dependent: 344, dependent conditional: 0, dependent unconditional: 344, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 2703, independent: 2640, independent conditional: 0, independent unconditional: 2640, dependent: 63, dependent conditional: 0, dependent unconditional: 63, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 4560, independent: 1576, independent conditional: 0, independent unconditional: 1576, dependent: 281, dependent conditional: 0, dependent unconditional: 281, unknown: 2703, unknown conditional: 0, unknown unconditional: 2703] , Statistics on independence cache: Total cache size (in pairs): 104, Positive cache size: 72, Positive conditional cache size: 0, Positive unconditional cache size: 72, Negative cache size: 32, Negative conditional cache size: 0, Negative unconditional cache size: 32, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - CounterExampleResult [Line: 1700]: integer overflow possible integer overflow possible 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) );}) [L1694] 1 data->shared.a = 1 VAL [__mptr={2147483654:6}, arg={5:24}, arg={5:24}, data={2147483654:-18}, dev={5:24}, t1={3:0}, t2={4:0}] [L1697] EXPR 1 data->shared.b [L1697] 1 int lb = data->shared.b; [L1700] 1 lb + 1 VAL [__mptr={2147483654:6}, arg={5:24}, arg={5:24}, data={2147483654:-18}, dev={5:24}, lb=2147483647, t1={3:0}, t2={4:0}] - UnprovableResult [Line: 1671]: Unable to prove that assertion always holds Unable to prove that assertion always holds Reason: Not analyzed. - UnprovableResult [Line: 1671]: Unable to prove that assertion always holds Unable to prove that assertion always holds Reason: Not analyzed. - UnprovableResult [Line: 1671]: Unable to prove that assertion always holds Unable to prove that assertion always holds Reason: Not analyzed. - UnprovableResult [Line: 1671]: Unable to prove that assertion always holds Unable to prove that assertion always holds Reason: Not analyzed. - UnprovableResult [Line: 1671]: Unable to prove that assertion always holds Unable to prove that assertion always holds Reason: Not analyzed. - UnprovableResult [Line: 1671]: Unable to prove that assertion always holds Unable to prove that assertion always holds 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. - 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: 1700]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 4 procedures, 192 locations, 14 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: 11.3s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 10.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 12 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 12 mSDsluCounter, 2 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 91 IncrementalHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 2 mSDtfsCounter, 91 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=140occurred in iteration=1, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 9 NumberOfCodeBlocks, 9 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 3 ConstructedInterpolants, 0 QuantifiedInterpolants, 47 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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! [2023-08-27 03:59:57,918 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...