/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.order.of.the.error.locations.to.be.checked PROGRAM_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/ldv-races/race-2_4-container_of.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-24 11:51:28,552 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-24 11:51:28,624 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-24 11:51:28,628 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-24 11:51:28,628 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-24 11:51:28,659 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-24 11:51:28,660 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-24 11:51:28,660 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-24 11:51:28,661 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-24 11:51:28,662 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-24 11:51:28,663 INFO L153 SettingsManager]: * Use SBE=true [2023-08-24 11:51:28,663 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-24 11:51:28,663 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-24 11:51:28,664 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-24 11:51:28,664 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-24 11:51:28,664 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-24 11:51:28,664 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-24 11:51:28,665 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-24 11:51:28,665 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-24 11:51:28,665 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-24 11:51:28,665 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-24 11:51:28,666 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-24 11:51:28,666 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-24 11:51:28,667 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-24 11:51:28,667 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-24 11:51:28,667 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-24 11:51:28,667 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-24 11:51:28,668 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 11:51:28,668 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-24 11:51:28,668 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-24 11:51:28,669 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-24 11:51:28,669 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-24 11:51:28,669 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-24 11:51:28,669 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-24 11:51:28,670 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-24 11:51:28,670 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST [2023-08-24 11:51:28,993 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-24 11:51:29,021 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-24 11:51:29,024 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-24 11:51:29,025 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-24 11:51:29,025 INFO L274 PluginConnector]: CDTParser initialized [2023-08-24 11:51:29,026 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-races/race-2_4-container_of.i [2023-08-24 11:51:30,281 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-24 11:51:30,601 INFO L384 CDTParser]: Found 1 translation units. [2023-08-24 11:51:30,601 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-2_4-container_of.i [2023-08-24 11:51:30,626 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e5ad9ede/60ae21b549f34e1eb08de57f9a04ed04/FLAGbbf9e9885 [2023-08-24 11:51:30,642 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e5ad9ede/60ae21b549f34e1eb08de57f9a04ed04 [2023-08-24 11:51:30,647 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-24 11:51:30,648 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-24 11:51:30,652 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-24 11:51:30,652 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-24 11:51:30,655 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-24 11:51:30,656 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 11:51:30" (1/1) ... [2023-08-24 11:51:30,657 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@475991be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:51:30, skipping insertion in model container [2023-08-24 11:51:30,658 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 11:51:30" (1/1) ... [2023-08-24 11:51:30,718 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-24 11:51:30,872 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-08-24 11:51:31,468 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_4-container_of.i[75002,75015] [2023-08-24 11:51:31,515 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 11:51:31,531 INFO L201 MainTranslator]: Completed pre-run [2023-08-24 11:51:31,541 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-08-24 11:51:31,555 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [251] [2023-08-24 11:51:31,556 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [251] [2023-08-24 11:51:31,564 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: unsigned short [735] [2023-08-24 11:51:31,581 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_4-container_of.i[75002,75015] [2023-08-24 11:51:31,583 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: unsigned long [1691] [2023-08-24 11:51:31,601 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 11:51:31,712 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-24 11:51:31,712 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-24 11:51:31,712 WARN L669 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-08-24 11:51:31,718 INFO L206 MainTranslator]: Completed translation [2023-08-24 11:51:31,719 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:51:31 WrapperNode [2023-08-24 11:51:31,719 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-24 11:51:31,720 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-24 11:51:31,720 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-24 11:51:31,720 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-24 11:51:31,726 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:51:31" (1/1) ... [2023-08-24 11:51:31,765 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:51:31" (1/1) ... [2023-08-24 11:51:31,791 INFO L138 Inliner]: procedures = 469, calls = 63, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 146 [2023-08-24 11:51:31,792 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-24 11:51:31,792 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-24 11:51:31,793 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-24 11:51:31,793 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-24 11:51:31,805 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:51:31" (1/1) ... [2023-08-24 11:51:31,805 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:51:31" (1/1) ... [2023-08-24 11:51:31,822 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:51:31" (1/1) ... [2023-08-24 11:51:31,823 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:51:31" (1/1) ... [2023-08-24 11:51:31,834 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:51:31" (1/1) ... [2023-08-24 11:51:31,836 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:51:31" (1/1) ... [2023-08-24 11:51:31,844 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:51:31" (1/1) ... [2023-08-24 11:51:31,846 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:51:31" (1/1) ... [2023-08-24 11:51:31,851 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-24 11:51:31,852 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-24 11:51:31,852 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-24 11:51:31,852 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-24 11:51:31,853 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:51:31" (1/1) ... [2023-08-24 11:51:31,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 11:51:31,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 11:51:31,885 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-24 11:51:31,887 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-24 11:51:31,922 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-24 11:51:31,922 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-24 11:51:31,922 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-24 11:51:31,922 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-24 11:51:31,922 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-24 11:51:31,922 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-24 11:51:31,922 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-08-24 11:51:31,923 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-24 11:51:31,923 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-24 11:51:31,923 INFO L130 BoogieDeclarations]: Found specification of procedure my_callback [2023-08-24 11:51:31,923 INFO L138 BoogieDeclarations]: Found implementation of procedure my_callback [2023-08-24 11:51:31,923 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-24 11:51:31,923 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-24 11:51:31,923 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-24 11:51:31,925 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-24 11:51:32,163 INFO L236 CfgBuilder]: Building ICFG [2023-08-24 11:51:32,164 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-24 11:51:32,382 INFO L277 CfgBuilder]: Performing block encoding [2023-08-24 11:51:32,443 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-24 11:51:32,443 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-24 11:51:32,445 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 11:51:32 BoogieIcfgContainer [2023-08-24 11:51:32,445 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-24 11:51:32,448 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-24 11:51:32,448 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-24 11:51:32,451 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-24 11:51:32,452 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.08 11:51:30" (1/3) ... [2023-08-24 11:51:32,453 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@557a1671 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 11:51:32, skipping insertion in model container [2023-08-24 11:51:32,453 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:51:31" (2/3) ... [2023-08-24 11:51:32,454 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@557a1671 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 11:51:32, skipping insertion in model container [2023-08-24 11:51:32,454 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 11:51:32" (3/3) ... [2023-08-24 11:51:32,456 INFO L112 eAbstractionObserver]: Analyzing ICFG race-2_4-container_of.i [2023-08-24 11:51:32,473 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-24 11:51:32,474 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-08-24 11:51:32,474 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-24 11:51:32,551 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-24 11:51:32,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 163 places, 163 transitions, 342 flow [2023-08-24 11:51:32,705 INFO L124 PetriNetUnfolderBase]: 8/209 cut-off events. [2023-08-24 11:51:32,706 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-24 11:51:32,716 INFO L83 FinitePrefix]: Finished finitePrefix Result has 218 conditions, 209 events. 8/209 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 421 event pairs, 0 based on Foata normal form. 0/189 useless extension candidates. Maximal degree in co-relation 113. Up to 4 conditions per place. [2023-08-24 11:51:32,716 INFO L82 GeneralOperation]: Start removeDead. Operand has 163 places, 163 transitions, 342 flow [2023-08-24 11:51:32,723 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 151 places, 149 transitions, 310 flow [2023-08-24 11:51:32,726 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 11:51:32,737 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 151 places, 149 transitions, 310 flow [2023-08-24 11:51:32,741 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 151 places, 149 transitions, 310 flow [2023-08-24 11:51:32,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 151 places, 149 transitions, 310 flow [2023-08-24 11:51:32,793 INFO L124 PetriNetUnfolderBase]: 5/186 cut-off events. [2023-08-24 11:51:32,793 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-24 11:51:32,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 195 conditions, 186 events. 5/186 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 355 event pairs, 0 based on Foata normal form. 0/171 useless extension candidates. Maximal degree in co-relation 101. Up to 4 conditions per place. [2023-08-24 11:51:32,798 INFO L119 LiptonReduction]: Number of co-enabled transitions 2940 [2023-08-24 11:51:40,428 INFO L134 LiptonReduction]: Checked pairs total: 6908 [2023-08-24 11:51:40,428 INFO L136 LiptonReduction]: Total number of compositions: 144 [2023-08-24 11:51:40,440 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-24 11:51:40,445 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;@66d02b06, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 11:51:40,445 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2023-08-24 11:51:40,450 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 11:51:40,450 INFO L124 PetriNetUnfolderBase]: 0/11 cut-off events. [2023-08-24 11:51:40,450 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 11:51:40,451 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 11:51:40,451 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-24 11:51:40,452 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-08-24 11:51:40,456 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 11:51:40,456 INFO L85 PathProgramCache]: Analyzing trace with hash 18295800, now seen corresponding path program 1 times [2023-08-24 11:51:40,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 11:51:40,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444710314] [2023-08-24 11:51:40,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 11:51:40,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 11:51:40,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 11:51:40,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 11:51:40,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 11:51:40,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444710314] [2023-08-24 11:51:40,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444710314] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 11:51:40,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 11:51:40,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 11:51:40,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952957481] [2023-08-24 11:51:40,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 11:51:40,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 11:51:40,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 11:51:40,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 11:51:40,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 11:51:40,956 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 307 [2023-08-24 11:51:40,961 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 36 transitions, 84 flow. Second operand has 3 states, 3 states have (on average 141.0) internal successors, (423), 3 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:51:40,962 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 11:51:40,962 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 307 [2023-08-24 11:51:40,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 11:51:41,146 INFO L124 PetriNetUnfolderBase]: 433/836 cut-off events. [2023-08-24 11:51:41,146 INFO L125 PetriNetUnfolderBase]: For 21/21 co-relation queries the response was YES. [2023-08-24 11:51:41,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1595 conditions, 836 events. 433/836 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 4445 event pairs, 432 based on Foata normal form. 0/725 useless extension candidates. Maximal degree in co-relation 1519. Up to 737 conditions per place. [2023-08-24 11:51:41,157 INFO L140 encePairwiseOnDemand]: 303/307 looper letters, 28 selfloop transitions, 2 changer transitions 0/36 dead transitions. [2023-08-24 11:51:41,157 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 36 transitions, 144 flow [2023-08-24 11:51:41,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 11:51:41,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 11:51:41,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 452 transitions. [2023-08-24 11:51:41,179 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49077090119435396 [2023-08-24 11:51:41,180 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 452 transitions. [2023-08-24 11:51:41,180 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 452 transitions. [2023-08-24 11:51:41,183 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 11:51:41,185 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 452 transitions. [2023-08-24 11:51:41,189 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 150.66666666666666) internal successors, (452), 3 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:51:41,193 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 307.0) internal successors, (1228), 4 states have internal predecessors, (1228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:51:41,194 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 307.0) internal successors, (1228), 4 states have internal predecessors, (1228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:51:41,195 INFO L175 Difference]: Start difference. First operand has 40 places, 36 transitions, 84 flow. Second operand 3 states and 452 transitions. [2023-08-24 11:51:41,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 36 transitions, 144 flow [2023-08-24 11:51:41,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 36 transitions, 136 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-24 11:51:41,200 INFO L231 Difference]: Finished difference. Result has 39 places, 36 transitions, 86 flow [2023-08-24 11:51:41,202 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=307, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=86, PETRI_PLACES=39, PETRI_TRANSITIONS=36} [2023-08-24 11:51:41,205 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, -1 predicate places. [2023-08-24 11:51:41,205 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 36 transitions, 86 flow [2023-08-24 11:51:41,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 141.0) internal successors, (423), 3 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:51:41,205 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 11:51:41,206 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-24 11:51:41,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-24 11:51:41,206 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-08-24 11:51:41,206 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 11:51:41,206 INFO L85 PathProgramCache]: Analyzing trace with hash 18273970, now seen corresponding path program 1 times [2023-08-24 11:51:41,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 11:51:41,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664103013] [2023-08-24 11:51:41,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 11:51:41,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 11:51:41,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 11:51:41,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 11:51:41,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 11:51:41,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664103013] [2023-08-24 11:51:41,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664103013] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 11:51:41,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 11:51:41,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 11:51:41,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9661159] [2023-08-24 11:51:41,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 11:51:41,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 11:51:41,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 11:51:41,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 11:51:41,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 11:51:41,419 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 307 [2023-08-24 11:51:41,420 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 36 transitions, 86 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) [2023-08-24 11:51:41,420 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 11:51:41,421 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 307 [2023-08-24 11:51:41,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 11:51:41,719 INFO L124 PetriNetUnfolderBase]: 999/1666 cut-off events. [2023-08-24 11:51:41,719 INFO L125 PetriNetUnfolderBase]: For 32/32 co-relation queries the response was YES. [2023-08-24 11:51:41,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3418 conditions, 1666 events. 999/1666 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 8149 event pairs, 666 based on Foata normal form. 0/1524 useless extension candidates. Maximal degree in co-relation 3401. Up to 1342 conditions per place. [2023-08-24 11:51:41,728 INFO L140 encePairwiseOnDemand]: 299/307 looper letters, 41 selfloop transitions, 8 changer transitions 0/49 dead transitions. [2023-08-24 11:51:41,728 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 49 transitions, 210 flow [2023-08-24 11:51:41,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 11:51:41,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 11:51:41,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 391 transitions. [2023-08-24 11:51:41,731 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4245385450597177 [2023-08-24 11:51:41,731 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 391 transitions. [2023-08-24 11:51:41,731 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 391 transitions. [2023-08-24 11:51:41,731 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 11:51:41,732 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 391 transitions. [2023-08-24 11:51:41,733 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) [2023-08-24 11:51:41,736 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 307.0) internal successors, (1228), 4 states have internal predecessors, (1228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:51:41,737 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 307.0) internal successors, (1228), 4 states have internal predecessors, (1228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:51:41,737 INFO L175 Difference]: Start difference. First operand has 39 places, 36 transitions, 86 flow. Second operand 3 states and 391 transitions. [2023-08-24 11:51:41,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 49 transitions, 210 flow [2023-08-24 11:51:41,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 49 transitions, 208 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-24 11:51:41,744 INFO L231 Difference]: Finished difference. Result has 42 places, 41 transitions, 138 flow [2023-08-24 11:51:41,744 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=307, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=138, PETRI_PLACES=42, PETRI_TRANSITIONS=41} [2023-08-24 11:51:41,749 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 2 predicate places. [2023-08-24 11:51:41,750 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 41 transitions, 138 flow [2023-08-24 11:51:41,750 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) [2023-08-24 11:51:41,750 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 11:51:41,750 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-24 11:51:41,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-24 11:51:41,751 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-08-24 11:51:41,753 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 11:51:41,753 INFO L85 PathProgramCache]: Analyzing trace with hash 566493576, now seen corresponding path program 1 times [2023-08-24 11:51:41,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 11:51:41,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050426550] [2023-08-24 11:51:41,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 11:51:41,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 11:51:41,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 11:51:41,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 11:51:41,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 11:51:41,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050426550] [2023-08-24 11:51:41,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050426550] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 11:51:41,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 11:51:41,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 11:51:41,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298347548] [2023-08-24 11:51:41,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 11:51:41,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 11:51:41,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 11:51:41,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 11:51:41,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 11:51:41,980 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 307 [2023-08-24 11:51:41,980 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 41 transitions, 138 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) [2023-08-24 11:51:41,980 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 11:51:41,981 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 307 [2023-08-24 11:51:41,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 11:51:42,254 INFO L124 PetriNetUnfolderBase]: 1115/1873 cut-off events. [2023-08-24 11:51:42,255 INFO L125 PetriNetUnfolderBase]: For 704/704 co-relation queries the response was YES. [2023-08-24 11:51:42,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4727 conditions, 1873 events. 1115/1873 cut-off events. For 704/704 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 9562 event pairs, 782 based on Foata normal form. 37/1837 useless extension candidates. Maximal degree in co-relation 2048. Up to 1567 conditions per place. [2023-08-24 11:51:42,265 INFO L140 encePairwiseOnDemand]: 300/307 looper letters, 45 selfloop transitions, 9 changer transitions 3/57 dead transitions. [2023-08-24 11:51:42,266 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 57 transitions, 314 flow [2023-08-24 11:51:42,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 11:51:42,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 11:51:42,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 390 transitions. [2023-08-24 11:51:42,267 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4234527687296417 [2023-08-24 11:51:42,267 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 390 transitions. [2023-08-24 11:51:42,268 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 390 transitions. [2023-08-24 11:51:42,268 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 11:51:42,268 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 390 transitions. [2023-08-24 11:51:42,269 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 130.0) internal successors, (390), 3 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:51:42,271 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 307.0) internal successors, (1228), 4 states have internal predecessors, (1228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:51:42,271 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 307.0) internal successors, (1228), 4 states have internal predecessors, (1228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:51:42,271 INFO L175 Difference]: Start difference. First operand has 42 places, 41 transitions, 138 flow. Second operand 3 states and 390 transitions. [2023-08-24 11:51:42,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 57 transitions, 314 flow [2023-08-24 11:51:42,278 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 57 transitions, 288 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-24 11:51:42,280 INFO L231 Difference]: Finished difference. Result has 43 places, 46 transitions, 185 flow [2023-08-24 11:51:42,280 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=307, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=185, PETRI_PLACES=43, PETRI_TRANSITIONS=46} [2023-08-24 11:51:42,281 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 3 predicate places. [2023-08-24 11:51:42,283 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 46 transitions, 185 flow [2023-08-24 11:51:42,284 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) [2023-08-24 11:51:42,284 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 11:51:42,284 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 11:51:42,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-24 11:51:42,285 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-08-24 11:51:42,285 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 11:51:42,285 INFO L85 PathProgramCache]: Analyzing trace with hash -1113798857, now seen corresponding path program 1 times [2023-08-24 11:51:42,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 11:51:42,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103225913] [2023-08-24 11:51:42,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 11:51:42,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 11:51:42,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 11:51:42,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 11:51:42,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 11:51:42,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103225913] [2023-08-24 11:51:42,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103225913] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 11:51:42,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 11:51:42,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 11:51:42,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230070645] [2023-08-24 11:51:42,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 11:51:42,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 11:51:42,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 11:51:42,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 11:51:42,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 11:51:42,435 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 307 [2023-08-24 11:51:42,435 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 46 transitions, 185 flow. Second operand has 3 states, 3 states have (on average 121.66666666666667) internal successors, (365), 3 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:51:42,435 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 11:51:42,435 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 307 [2023-08-24 11:51:42,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 11:51:42,748 INFO L124 PetriNetUnfolderBase]: 1397/2345 cut-off events. [2023-08-24 11:51:42,749 INFO L125 PetriNetUnfolderBase]: For 1341/1341 co-relation queries the response was YES. [2023-08-24 11:51:42,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6387 conditions, 2345 events. 1397/2345 cut-off events. For 1341/1341 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 12781 event pairs, 678 based on Foata normal form. 0/2180 useless extension candidates. Maximal degree in co-relation 3917. Up to 1873 conditions per place. [2023-08-24 11:51:42,763 INFO L140 encePairwiseOnDemand]: 299/307 looper letters, 56 selfloop transitions, 7 changer transitions 0/63 dead transitions. [2023-08-24 11:51:42,764 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 63 transitions, 362 flow [2023-08-24 11:51:42,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 11:51:42,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 11:51:42,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 408 transitions. [2023-08-24 11:51:42,766 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44299674267100975 [2023-08-24 11:51:42,766 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 408 transitions. [2023-08-24 11:51:42,766 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 408 transitions. [2023-08-24 11:51:42,766 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 11:51:42,766 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 408 transitions. [2023-08-24 11:51:42,767 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 136.0) internal successors, (408), 3 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:51:42,769 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 307.0) internal successors, (1228), 4 states have internal predecessors, (1228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:51:42,770 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 307.0) internal successors, (1228), 4 states have internal predecessors, (1228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:51:42,770 INFO L175 Difference]: Start difference. First operand has 43 places, 46 transitions, 185 flow. Second operand 3 states and 408 transitions. [2023-08-24 11:51:42,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 63 transitions, 362 flow [2023-08-24 11:51:42,776 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 63 transitions, 349 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-24 11:51:42,777 INFO L231 Difference]: Finished difference. Result has 44 places, 52 transitions, 242 flow [2023-08-24 11:51:42,777 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=307, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=242, PETRI_PLACES=44, PETRI_TRANSITIONS=52} [2023-08-24 11:51:42,778 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 4 predicate places. [2023-08-24 11:51:42,778 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 52 transitions, 242 flow [2023-08-24 11:51:42,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 121.66666666666667) internal successors, (365), 3 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:51:42,779 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 11:51:42,779 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 11:51:42,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-24 11:51:42,779 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-08-24 11:51:42,779 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 11:51:42,780 INFO L85 PathProgramCache]: Analyzing trace with hash -168025827, now seen corresponding path program 1 times [2023-08-24 11:51:42,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 11:51:42,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291270906] [2023-08-24 11:51:42,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 11:51:42,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 11:51:42,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 11:51:42,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 11:51:42,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 11:51:42,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291270906] [2023-08-24 11:51:42,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291270906] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 11:51:42,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 11:51:42,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 11:51:42,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464598372] [2023-08-24 11:51:42,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 11:51:42,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 11:51:42,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 11:51:42,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 11:51:42,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 11:51:42,907 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 307 [2023-08-24 11:51:42,907 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 52 transitions, 242 flow. Second operand has 3 states, 3 states have (on average 122.0) internal successors, (366), 3 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:51:42,907 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 11:51:42,908 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 307 [2023-08-24 11:51:42,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 11:51:43,246 INFO L124 PetriNetUnfolderBase]: 1628/2738 cut-off events. [2023-08-24 11:51:43,246 INFO L125 PetriNetUnfolderBase]: For 3176/3176 co-relation queries the response was YES. [2023-08-24 11:51:43,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8237 conditions, 2738 events. 1628/2738 cut-off events. For 3176/3176 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 15351 event pairs, 794 based on Foata normal form. 0/2609 useless extension candidates. Maximal degree in co-relation 3419. Up to 2113 conditions per place. [2023-08-24 11:51:43,261 INFO L140 encePairwiseOnDemand]: 299/307 looper letters, 60 selfloop transitions, 12 changer transitions 0/72 dead transitions. [2023-08-24 11:51:43,261 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 72 transitions, 491 flow [2023-08-24 11:51:43,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 11:51:43,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 11:51:43,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 407 transitions. [2023-08-24 11:51:43,263 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44191096634093374 [2023-08-24 11:51:43,263 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 407 transitions. [2023-08-24 11:51:43,263 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 407 transitions. [2023-08-24 11:51:43,263 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 11:51:43,263 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 407 transitions. [2023-08-24 11:51:43,264 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 135.66666666666666) internal successors, (407), 3 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:51:43,266 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 307.0) internal successors, (1228), 4 states have internal predecessors, (1228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:51:43,266 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 307.0) internal successors, (1228), 4 states have internal predecessors, (1228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:51:43,266 INFO L175 Difference]: Start difference. First operand has 44 places, 52 transitions, 242 flow. Second operand 3 states and 407 transitions. [2023-08-24 11:51:43,266 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 72 transitions, 491 flow [2023-08-24 11:51:43,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 72 transitions, 435 flow, removed 16 selfloop flow, removed 2 redundant places. [2023-08-24 11:51:43,271 INFO L231 Difference]: Finished difference. Result has 46 places, 62 transitions, 336 flow [2023-08-24 11:51:43,271 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=307, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=336, PETRI_PLACES=46, PETRI_TRANSITIONS=62} [2023-08-24 11:51:43,272 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 6 predicate places. [2023-08-24 11:51:43,272 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 62 transitions, 336 flow [2023-08-24 11:51:43,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 122.0) internal successors, (366), 3 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:51:43,272 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 11:51:43,273 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 11:51:43,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-24 11:51:43,273 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-08-24 11:51:43,273 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 11:51:43,273 INFO L85 PathProgramCache]: Analyzing trace with hash 515234474, now seen corresponding path program 1 times [2023-08-24 11:51:43,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 11:51:43,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715448896] [2023-08-24 11:51:43,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 11:51:43,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 11:51:43,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 11:51:43,333 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-24 11:51:43,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 11:51:43,402 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-24 11:51:43,402 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-24 11:51:43,403 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (7 of 8 remaining) [2023-08-24 11:51:43,404 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (6 of 8 remaining) [2023-08-24 11:51:43,404 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (5 of 8 remaining) [2023-08-24 11:51:43,404 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (4 of 8 remaining) [2023-08-24 11:51:43,404 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (3 of 8 remaining) [2023-08-24 11:51:43,408 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (2 of 8 remaining) [2023-08-24 11:51:43,409 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 8 remaining) [2023-08-24 11:51:43,409 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 8 remaining) [2023-08-24 11:51:43,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-24 11:51:43,409 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-08-24 11:51:43,414 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-24 11:51:43,414 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-24 11:51:43,460 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.08 11:51:43 BasicIcfg [2023-08-24 11:51:43,461 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-24 11:51:43,461 INFO L158 Benchmark]: Toolchain (without parser) took 12813.36ms. Allocated memory was 335.5MB in the beginning and 484.4MB in the end (delta: 148.9MB). Free memory was 307.8MB in the beginning and 327.4MB in the end (delta: -19.6MB). Peak memory consumption was 128.2MB. Max. memory is 16.0GB. [2023-08-24 11:51:43,461 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 335.5MB. Free memory was 312.3MB in the beginning and 312.2MB in the end (delta: 169.9kB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-24 11:51:43,465 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1067.53ms. Allocated memory is still 335.5MB. Free memory was 307.8MB in the beginning and 252.2MB in the end (delta: 55.5MB). Peak memory consumption was 54.5MB. Max. memory is 16.0GB. [2023-08-24 11:51:43,466 INFO L158 Benchmark]: Boogie Procedure Inliner took 72.07ms. Allocated memory is still 335.5MB. Free memory was 252.2MB in the beginning and 248.6MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2023-08-24 11:51:43,466 INFO L158 Benchmark]: Boogie Preprocessor took 58.64ms. Allocated memory is still 335.5MB. Free memory was 248.6MB in the beginning and 245.9MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-24 11:51:43,466 INFO L158 Benchmark]: RCFGBuilder took 593.99ms. Allocated memory was 335.5MB in the beginning and 402.7MB in the end (delta: 67.1MB). Free memory was 245.9MB in the beginning and 372.0MB in the end (delta: -126.1MB). Peak memory consumption was 31.5MB. Max. memory is 16.0GB. [2023-08-24 11:51:43,466 INFO L158 Benchmark]: TraceAbstraction took 11012.42ms. Allocated memory was 402.7MB in the beginning and 484.4MB in the end (delta: 81.8MB). Free memory was 372.0MB in the beginning and 327.4MB in the end (delta: 44.6MB). Peak memory consumption was 126.4MB. Max. memory is 16.0GB. [2023-08-24 11:51:43,468 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 335.5MB. Free memory was 312.3MB in the beginning and 312.2MB in the end (delta: 169.9kB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 1067.53ms. Allocated memory is still 335.5MB. Free memory was 307.8MB in the beginning and 252.2MB in the end (delta: 55.5MB). Peak memory consumption was 54.5MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 72.07ms. Allocated memory is still 335.5MB. Free memory was 252.2MB in the beginning and 248.6MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * Boogie Preprocessor took 58.64ms. Allocated memory is still 335.5MB. Free memory was 248.6MB in the beginning and 245.9MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 593.99ms. Allocated memory was 335.5MB in the beginning and 402.7MB in the end (delta: 67.1MB). Free memory was 245.9MB in the beginning and 372.0MB in the end (delta: -126.1MB). Peak memory consumption was 31.5MB. Max. memory is 16.0GB. * TraceAbstraction took 11012.42ms. Allocated memory was 402.7MB in the beginning and 484.4MB in the end (delta: 81.8MB). Free memory was 372.0MB in the beginning and 327.4MB in the end (delta: 44.6MB). Peak memory consumption was 126.4MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 251]: Unsoundness Warning unspecified type, defaulting to int C: short [251] - GenericResultAtLocation [Line: 251]: Unsoundness Warning unspecified type, defaulting to int C: short [251] - GenericResultAtLocation [Line: 735]: Unsoundness Warning unspecified type, defaulting to int C: unsigned short [735] - GenericResultAtLocation [Line: 1691]: Unsoundness Warning unspecified type, defaulting to int C: unsigned long [1691] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 7.7s, 151 PlacesBefore, 40 PlacesAfterwards, 149 TransitionsBefore, 36 TransitionsAfterwards, 2940 CoEnabledTransitionPairs, 6 FixpointIterations, 70 TrivialSequentialCompositions, 51 ConcurrentSequentialCompositions, 5 TrivialYvCompositions, 16 ConcurrentYvCompositions, 2 ChoiceCompositions, 144 TotalNumberOfCompositions, 6908 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2977, independent: 2725, independent conditional: 0, independent unconditional: 2725, dependent: 252, dependent conditional: 0, dependent unconditional: 252, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1536, independent: 1480, independent conditional: 0, independent unconditional: 1480, dependent: 56, dependent conditional: 0, dependent unconditional: 56, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2977, independent: 1245, independent conditional: 0, independent unconditional: 1245, dependent: 196, dependent conditional: 0, dependent unconditional: 196, unknown: 1536, unknown conditional: 0, unknown unconditional: 1536] , Statistics on independence cache: Total cache size (in pairs): 94, Positive cache size: 69, Positive conditional cache size: 0, Positive unconditional cache size: 69, Negative cache size: 25, Negative conditional cache size: 0, Negative unconditional cache size: 25, 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, EXPR 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={6:24}, d={6:24}, data={6:0}, data={6:0}, 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={6:24}, arg={6:24}, arg={6:24}, d={6:24}, data={6:0}, data={6:0}, data={6:0}, dev={6:24}, pthread_create(&t2, ((void *)0), my_callback, (void *)d)=0, pthread_mutex_lock (&data->lock)=0, res=0, t1={3:0}, t2={4:0}] [L1715] 0 return 0; [L1749] RET, EXPR 0 my_drv_probe(&data) [L1749] 0 probe_ret = my_drv_probe(&data) [L1750] COND TRUE 0 probe_ret==0 [L1751] CALL 0 my_drv_disconnect(&data) [L1721] 0 void *status; [L1723] 0 data->shared.a = 3 VAL [__mptr={6:24}, arg={6:24}, arg={6:24}, data={6:0}, data={6:0}, data={6:0}, dev={6:24}, pthread_mutex_lock (&data->lock)=0, status={5:0}, t1={3:0}, t2={4:0}] [L1694] 1 data->shared.a = 1 VAL [__mptr={6:24}, arg={6:24}, arg={6:24}, data={6:0}, dev={6:24}, t1={3:0}, t2={4:0}] [L1726] 0 data->shared.b = 3 VAL [__mptr={6:24}, arg={6:24}, arg={6:24}, data={6:0}, data={6:0}, data={6:0}, dev={6:24}, status={5:0}, t1={3:0}, t2={4:0}] [L1729] EXPR 0 data->shared.a [L1729] CALL 0 ldv_assert(data->shared.a==3) [L1675] COND TRUE 0 !expression [L1675] 0 reach_error() VAL [\old(expression)=0, __mptr={6:24}, arg={6:24}, arg={6:24}, data={6:0}, dev={6:24}, 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: 10.8s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 7.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 36 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 36 mSDsluCounter, 20 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 356 IncrementalHoareTripleChecker+Invalid, 361 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 20 mSDtfsCounter, 356 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=336occurred in iteration=5, InterpolantAutomatonStates: 15, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 40 NumberOfCodeBlocks, 40 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 25 ConstructedInterpolants, 0 QuantifiedInterpolants, 148 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-08-24 11:51:43,491 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...