/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.pointer.base.address.is.valid.at.dereference ASSERTandASSUME --cacsl2boogietranslator.pointer.to.allocated.memory.at.dereference ASSERTandASSUME --cacsl2boogietranslator.check.array.bounds.for.arrays.that.are.off.heap ASSERTandASSUME --cacsl2boogietranslator.check.if.freed.pointer.was.valid true --cacsl2boogietranslator.adapt.memory.model.on.pointer.casts.if.necessary true -i ../../../trunk/examples/svcomp/ldv-races/race-1_1-join.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-26 12:19:31,991 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-26 12:19:32,038 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-26 12:19:32,042 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-26 12:19:32,043 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-26 12:19:32,063 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-26 12:19:32,063 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-26 12:19:32,064 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-26 12:19:32,064 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-26 12:19:32,065 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-26 12:19:32,065 INFO L153 SettingsManager]: * Use SBE=true [2023-08-26 12:19:32,065 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-26 12:19:32,066 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-26 12:19:32,066 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-26 12:19:32,066 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-26 12:19:32,067 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-26 12:19:32,067 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-26 12:19:32,067 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-26 12:19:32,068 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-26 12:19:32,068 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-26 12:19:32,069 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-26 12:19:32,069 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-26 12:19:32,069 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-26 12:19:32,070 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-26 12:19:32,070 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-26 12:19:32,070 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-26 12:19:32,071 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-26 12:19:32,071 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 12:19:32,072 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-26 12:19:32,072 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-26 12:19:32,072 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-26 12:19:32,073 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-26 12:19:32,073 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-26 12:19:32,073 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-26 12:19:32,074 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-26 12:19:32,074 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer base address is valid at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer to allocated memory at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check array bounds for arrays that are off heap -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check if freed pointer was valid -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Adapt memory model on pointer casts if necessary -> true [2023-08-26 12:19:32,399 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-26 12:19:32,424 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-26 12:19:32,426 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-26 12:19:32,428 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-26 12:19:32,428 INFO L274 PluginConnector]: CDTParser initialized [2023-08-26 12:19:32,430 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-races/race-1_1-join.i [2023-08-26 12:19:33,584 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-26 12:19:33,929 INFO L384 CDTParser]: Found 1 translation units. [2023-08-26 12:19:33,929 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-1_1-join.i [2023-08-26 12:19:33,951 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/13deb6918/681fbb96db0b4dd39afda89353ed4798/FLAGfd94ab54d [2023-08-26 12:19:33,971 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/13deb6918/681fbb96db0b4dd39afda89353ed4798 [2023-08-26 12:19:33,973 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-26 12:19:33,975 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-26 12:19:33,975 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-26 12:19:33,976 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-26 12:19:33,978 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-26 12:19:33,978 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 12:19:33" (1/1) ... [2023-08-26 12:19:33,979 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42cc12b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:19:33, skipping insertion in model container [2023-08-26 12:19:33,979 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 12:19:33" (1/1) ... [2023-08-26 12:19:34,037 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-26 12:19:34,756 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 12:19:34,773 INFO L201 MainTranslator]: Completed pre-run [2023-08-26 12:19:34,795 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [237] [2023-08-26 12:19:34,796 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [237] [2023-08-26 12:19:34,801 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: unsigned short [729] [2023-08-26 12:19:34,839 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 12:19:34,954 INFO L206 MainTranslator]: Completed translation [2023-08-26 12:19:34,957 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:19:34 WrapperNode [2023-08-26 12:19:34,957 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-26 12:19:34,958 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-26 12:19:34,958 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-26 12:19:34,958 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-26 12:19:34,963 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:19:34" (1/1) ... [2023-08-26 12:19:35,006 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:19:34" (1/1) ... [2023-08-26 12:19:35,028 INFO L138 Inliner]: procedures = 480, calls = 28, calls flagged for inlining = 9, calls inlined = 12, statements flattened = 104 [2023-08-26 12:19:35,028 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-26 12:19:35,029 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-26 12:19:35,029 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-26 12:19:35,029 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-26 12:19:35,036 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:19:34" (1/1) ... [2023-08-26 12:19:35,037 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:19:34" (1/1) ... [2023-08-26 12:19:35,040 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:19:34" (1/1) ... [2023-08-26 12:19:35,040 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:19:34" (1/1) ... [2023-08-26 12:19:35,050 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:19:34" (1/1) ... [2023-08-26 12:19:35,052 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:19:34" (1/1) ... [2023-08-26 12:19:35,056 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:19:34" (1/1) ... [2023-08-26 12:19:35,057 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:19:34" (1/1) ... [2023-08-26 12:19:35,062 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-26 12:19:35,063 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-26 12:19:35,063 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-26 12:19:35,063 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-26 12:19:35,064 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:19:34" (1/1) ... [2023-08-26 12:19:35,068 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 12:19:35,089 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 12:19:35,099 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) [2023-08-26 12:19:35,100 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 [2023-08-26 12:19:35,125 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-26 12:19:35,125 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-26 12:19:35,125 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-26 12:19:35,125 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-26 12:19:35,125 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-08-26 12:19:35,125 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-26 12:19:35,126 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-26 12:19:35,126 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-26 12:19:35,126 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-26 12:19:35,126 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-26 12:19:35,126 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-26 12:19:35,126 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-26 12:19:35,127 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-26 12:19:35,347 INFO L236 CfgBuilder]: Building ICFG [2023-08-26 12:19:35,348 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-26 12:19:35,529 INFO L277 CfgBuilder]: Performing block encoding [2023-08-26 12:19:35,535 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-26 12:19:35,535 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-26 12:19:35,537 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 12:19:35 BoogieIcfgContainer [2023-08-26 12:19:35,537 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-26 12:19:35,538 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-26 12:19:35,539 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-26 12:19:35,541 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-26 12:19:35,541 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 12:19:33" (1/3) ... [2023-08-26 12:19:35,542 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27512b4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 12:19:35, skipping insertion in model container [2023-08-26 12:19:35,542 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:19:34" (2/3) ... [2023-08-26 12:19:35,542 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27512b4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 12:19:35, skipping insertion in model container [2023-08-26 12:19:35,542 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 12:19:35" (3/3) ... [2023-08-26 12:19:35,543 INFO L112 eAbstractionObserver]: Analyzing ICFG race-1_1-join.i [2023-08-26 12:19:35,560 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-26 12:19:35,561 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2023-08-26 12:19:35,561 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-26 12:19:35,625 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-26 12:19:35,661 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 116 places, 122 transitions, 252 flow [2023-08-26 12:19:35,724 INFO L124 PetriNetUnfolderBase]: 9/135 cut-off events. [2023-08-26 12:19:35,724 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-26 12:19:35,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140 conditions, 135 events. 9/135 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 275 event pairs, 0 based on Foata normal form. 0/112 useless extension candidates. Maximal degree in co-relation 75. Up to 3 conditions per place. [2023-08-26 12:19:35,728 INFO L82 GeneralOperation]: Start removeDead. Operand has 116 places, 122 transitions, 252 flow [2023-08-26 12:19:35,733 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 109 places, 112 transitions, 230 flow [2023-08-26 12:19:35,736 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 12:19:35,749 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 109 places, 112 transitions, 230 flow [2023-08-26 12:19:35,751 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 109 places, 112 transitions, 230 flow [2023-08-26 12:19:35,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 109 places, 112 transitions, 230 flow [2023-08-26 12:19:35,785 INFO L124 PetriNetUnfolderBase]: 6/126 cut-off events. [2023-08-26 12:19:35,786 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-26 12:19:35,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 131 conditions, 126 events. 6/126 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 258 event pairs, 0 based on Foata normal form. 0/106 useless extension candidates. Maximal degree in co-relation 75. Up to 2 conditions per place. [2023-08-26 12:19:35,787 INFO L119 LiptonReduction]: Number of co-enabled transitions 646 [2023-08-26 12:19:39,879 INFO L134 LiptonReduction]: Checked pairs total: 615 [2023-08-26 12:19:39,879 INFO L136 LiptonReduction]: Total number of compositions: 152 [2023-08-26 12:19:39,891 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 12:19:39,896 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;@7c2203ff, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 12:19:39,896 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2023-08-26 12:19:39,897 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 12:19:39,897 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-08-26 12:19:39,897 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 12:19:39,898 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 12:19:39,898 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-26 12:19:39,899 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-26 12:19:39,902 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 12:19:39,903 INFO L85 PathProgramCache]: Analyzing trace with hash 487, now seen corresponding path program 1 times [2023-08-26 12:19:39,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 12:19:39,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813973282] [2023-08-26 12:19:39,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 12:19:39,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 12:19:40,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 12:19:40,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 12:19:40,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 12:19:40,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813973282] [2023-08-26 12:19:40,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813973282] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 12:19:40,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 12:19:40,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-26 12:19:40,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633494057] [2023-08-26 12:19:40,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 12:19:40,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-26 12:19:40,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 12:19:40,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-26 12:19:40,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-26 12:19:40,165 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 274 [2023-08-26 12:19:40,167 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 18 transitions, 42 flow. Second operand has 2 states, 2 states have (on average 108.5) internal successors, (217), 2 states have internal predecessors, (217), 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) [2023-08-26 12:19:40,167 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 12:19:40,167 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 274 [2023-08-26 12:19:40,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 12:19:40,200 INFO L124 PetriNetUnfolderBase]: 5/26 cut-off events. [2023-08-26 12:19:40,200 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-26 12:19:40,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56 conditions, 26 events. 5/26 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 53 event pairs, 5 based on Foata normal form. 1/16 useless extension candidates. Maximal degree in co-relation 32. Up to 25 conditions per place. [2023-08-26 12:19:40,201 INFO L140 encePairwiseOnDemand]: 268/274 looper letters, 9 selfloop transitions, 0 changer transitions 1/12 dead transitions. [2023-08-26 12:19:40,202 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 16 places, 12 transitions, 50 flow [2023-08-26 12:19:40,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-26 12:19:40,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-26 12:19:40,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 232 transitions. [2023-08-26 12:19:40,213 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4233576642335766 [2023-08-26 12:19:40,214 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 232 transitions. [2023-08-26 12:19:40,214 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 232 transitions. [2023-08-26 12:19:40,215 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 12:19:40,217 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 232 transitions. [2023-08-26 12:19:40,220 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 116.0) internal successors, (232), 2 states have internal predecessors, (232), 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) [2023-08-26 12:19:40,223 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 274.0) internal successors, (822), 3 states have internal predecessors, (822), 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) [2023-08-26 12:19:40,224 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 274.0) internal successors, (822), 3 states have internal predecessors, (822), 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) [2023-08-26 12:19:40,226 INFO L175 Difference]: Start difference. First operand has 21 places, 18 transitions, 42 flow. Second operand 2 states and 232 transitions. [2023-08-26 12:19:40,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 16 places, 12 transitions, 50 flow [2023-08-26 12:19:40,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 14 places, 12 transitions, 46 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 12:19:40,229 INFO L231 Difference]: Finished difference. Result has 14 places, 11 transitions, 24 flow [2023-08-26 12:19:40,230 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=274, PETRI_DIFFERENCE_MINUEND_FLOW=26, PETRI_DIFFERENCE_MINUEND_PLACES=13, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=24, PETRI_PLACES=14, PETRI_TRANSITIONS=11} [2023-08-26 12:19:40,233 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, -7 predicate places. [2023-08-26 12:19:40,233 INFO L495 AbstractCegarLoop]: Abstraction has has 14 places, 11 transitions, 24 flow [2023-08-26 12:19:40,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 108.5) internal successors, (217), 2 states have internal predecessors, (217), 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) [2023-08-26 12:19:40,234 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 12:19:40,234 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-26 12:19:40,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-26 12:19:40,235 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-26 12:19:40,235 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 12:19:40,235 INFO L85 PathProgramCache]: Analyzing trace with hash 15700, now seen corresponding path program 1 times [2023-08-26 12:19:40,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 12:19:40,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010075790] [2023-08-26 12:19:40,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 12:19:40,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 12:19:40,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 12:19:40,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 12:19:40,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 12:19:40,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010075790] [2023-08-26 12:19:40,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010075790] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 12:19:40,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 12:19:40,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 12:19:40,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20908551] [2023-08-26 12:19:40,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 12:19:40,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 12:19:40,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 12:19:40,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 12:19:40,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 12:19:40,380 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 274 [2023-08-26 12:19:40,380 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 14 places, 11 transitions, 24 flow. Second operand has 3 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 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) [2023-08-26 12:19:40,381 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 12:19:40,381 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 274 [2023-08-26 12:19:40,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 12:19:40,418 INFO L124 PetriNetUnfolderBase]: 4/19 cut-off events. [2023-08-26 12:19:40,419 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 12:19:40,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40 conditions, 19 events. 4/19 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 30 event pairs, 4 based on Foata normal form. 1/14 useless extension candidates. Maximal degree in co-relation 37. Up to 17 conditions per place. [2023-08-26 12:19:40,419 INFO L140 encePairwiseOnDemand]: 270/274 looper letters, 8 selfloop transitions, 0 changer transitions 1/11 dead transitions. [2023-08-26 12:19:40,419 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 15 places, 11 transitions, 42 flow [2023-08-26 12:19:40,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 12:19:40,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 12:19:40,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 315 transitions. [2023-08-26 12:19:40,422 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38321167883211676 [2023-08-26 12:19:40,423 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 315 transitions. [2023-08-26 12:19:40,423 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 315 transitions. [2023-08-26 12:19:40,423 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 12:19:40,424 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 315 transitions. [2023-08-26 12:19:40,425 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 105.0) internal successors, (315), 3 states have internal predecessors, (315), 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) [2023-08-26 12:19:40,427 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 274.0) internal successors, (1096), 4 states have internal predecessors, (1096), 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) [2023-08-26 12:19:40,428 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 274.0) internal successors, (1096), 4 states have internal predecessors, (1096), 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) [2023-08-26 12:19:40,428 INFO L175 Difference]: Start difference. First operand has 14 places, 11 transitions, 24 flow. Second operand 3 states and 315 transitions. [2023-08-26 12:19:40,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 15 places, 11 transitions, 42 flow [2023-08-26 12:19:40,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 15 places, 11 transitions, 42 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 12:19:40,429 INFO L231 Difference]: Finished difference. Result has 16 places, 10 transitions, 28 flow [2023-08-26 12:19:40,429 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=274, PETRI_DIFFERENCE_MINUEND_FLOW=24, PETRI_DIFFERENCE_MINUEND_PLACES=13, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=11, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=28, PETRI_PLACES=16, PETRI_TRANSITIONS=10} [2023-08-26 12:19:40,430 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, -5 predicate places. [2023-08-26 12:19:40,430 INFO L495 AbstractCegarLoop]: Abstraction has has 16 places, 10 transitions, 28 flow [2023-08-26 12:19:40,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 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) [2023-08-26 12:19:40,430 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 12:19:40,430 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-26 12:19:40,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-26 12:19:40,431 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-26 12:19:40,431 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 12:19:40,431 INFO L85 PathProgramCache]: Analyzing trace with hash 15030457, now seen corresponding path program 1 times [2023-08-26 12:19:40,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 12:19:40,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171879226] [2023-08-26 12:19:40,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 12:19:40,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 12:19:40,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 12:19:40,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 12:19:40,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 12:19:40,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171879226] [2023-08-26 12:19:40,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171879226] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 12:19:40,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 12:19:40,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 12:19:40,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868409601] [2023-08-26 12:19:40,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 12:19:40,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 12:19:40,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 12:19:40,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 12:19:40,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 12:19:40,592 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 274 [2023-08-26 12:19:40,592 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 16 places, 10 transitions, 28 flow. Second operand has 3 states, 3 states have (on average 91.33333333333333) internal successors, (274), 3 states have internal predecessors, (274), 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) [2023-08-26 12:19:40,592 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 12:19:40,593 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 274 [2023-08-26 12:19:40,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 12:19:40,613 INFO L124 PetriNetUnfolderBase]: 2/12 cut-off events. [2023-08-26 12:19:40,613 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-26 12:19:40,614 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32 conditions, 12 events. 2/12 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 8 event pairs, 2 based on Foata normal form. 0/11 useless extension candidates. Maximal degree in co-relation 27. Up to 12 conditions per place. [2023-08-26 12:19:40,614 INFO L140 encePairwiseOnDemand]: 271/274 looper letters, 7 selfloop transitions, 1 changer transitions 0/8 dead transitions. [2023-08-26 12:19:40,614 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 15 places, 8 transitions, 36 flow [2023-08-26 12:19:40,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 12:19:40,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 12:19:40,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 280 transitions. [2023-08-26 12:19:40,616 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.340632603406326 [2023-08-26 12:19:40,616 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 280 transitions. [2023-08-26 12:19:40,616 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 280 transitions. [2023-08-26 12:19:40,617 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 12:19:40,617 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 280 transitions. [2023-08-26 12:19:40,618 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 93.33333333333333) internal successors, (280), 3 states have internal predecessors, (280), 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) [2023-08-26 12:19:40,620 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 274.0) internal successors, (1096), 4 states have internal predecessors, (1096), 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) [2023-08-26 12:19:40,620 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 274.0) internal successors, (1096), 4 states have internal predecessors, (1096), 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) [2023-08-26 12:19:40,621 INFO L175 Difference]: Start difference. First operand has 16 places, 10 transitions, 28 flow. Second operand 3 states and 280 transitions. [2023-08-26 12:19:40,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 15 places, 8 transitions, 36 flow [2023-08-26 12:19:40,621 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 14 places, 8 transitions, 34 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-26 12:19:40,621 INFO L231 Difference]: Finished difference. Result has 14 places, 8 transitions, 20 flow [2023-08-26 12:19:40,621 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=274, PETRI_DIFFERENCE_MINUEND_FLOW=18, PETRI_DIFFERENCE_MINUEND_PLACES=12, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=8, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=20, PETRI_PLACES=14, PETRI_TRANSITIONS=8} [2023-08-26 12:19:40,622 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, -7 predicate places. [2023-08-26 12:19:40,622 INFO L495 AbstractCegarLoop]: Abstraction has has 14 places, 8 transitions, 20 flow [2023-08-26 12:19:40,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 91.33333333333333) internal successors, (274), 3 states have internal predecessors, (274), 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) [2023-08-26 12:19:40,623 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 12:19:40,623 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-26 12:19:40,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-26 12:19:40,623 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-26 12:19:40,624 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 12:19:40,624 INFO L85 PathProgramCache]: Analyzing trace with hash 1097078064, now seen corresponding path program 1 times [2023-08-26 12:19:40,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 12:19:40,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373153367] [2023-08-26 12:19:40,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 12:19:40,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 12:19:40,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 12:19:40,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 12:19:40,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 12:19:40,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373153367] [2023-08-26 12:19:40,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373153367] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 12:19:40,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 12:19:40,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 12:19:40,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40141498] [2023-08-26 12:19:40,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 12:19:40,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 12:19:40,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 12:19:40,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 12:19:40,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 12:19:40,708 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 274 [2023-08-26 12:19:40,709 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 14 places, 8 transitions, 20 flow. Second operand has 3 states, 3 states have (on average 94.33333333333333) internal successors, (283), 3 states have internal predecessors, (283), 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) [2023-08-26 12:19:40,709 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 12:19:40,709 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 274 [2023-08-26 12:19:40,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 12:19:40,729 INFO L124 PetriNetUnfolderBase]: 2/11 cut-off events. [2023-08-26 12:19:40,729 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 12:19:40,729 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29 conditions, 11 events. 2/11 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 7 event pairs, 1 based on Foata normal form. 0/11 useless extension candidates. Maximal degree in co-relation 24. Up to 7 conditions per place. [2023-08-26 12:19:40,729 INFO L140 encePairwiseOnDemand]: 272/274 looper letters, 7 selfloop transitions, 1 changer transitions 0/8 dead transitions. [2023-08-26 12:19:40,729 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 15 places, 8 transitions, 36 flow [2023-08-26 12:19:40,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 12:19:40,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 12:19:40,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 285 transitions. [2023-08-26 12:19:40,731 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3467153284671533 [2023-08-26 12:19:40,731 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 285 transitions. [2023-08-26 12:19:40,731 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 285 transitions. [2023-08-26 12:19:40,732 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 12:19:40,732 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 285 transitions. [2023-08-26 12:19:40,733 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 95.0) internal successors, (285), 3 states have internal predecessors, (285), 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) [2023-08-26 12:19:40,734 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 274.0) internal successors, (1096), 4 states have internal predecessors, (1096), 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) [2023-08-26 12:19:40,735 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 274.0) internal successors, (1096), 4 states have internal predecessors, (1096), 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) [2023-08-26 12:19:40,735 INFO L175 Difference]: Start difference. First operand has 14 places, 8 transitions, 20 flow. Second operand 3 states and 285 transitions. [2023-08-26 12:19:40,735 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 15 places, 8 transitions, 36 flow [2023-08-26 12:19:40,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 14 places, 8 transitions, 35 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 12:19:40,736 INFO L231 Difference]: Finished difference. Result has 14 places, 7 transitions, 19 flow [2023-08-26 12:19:40,736 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=274, PETRI_DIFFERENCE_MINUEND_FLOW=17, PETRI_DIFFERENCE_MINUEND_PLACES=12, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=7, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=6, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=19, PETRI_PLACES=14, PETRI_TRANSITIONS=7} [2023-08-26 12:19:40,737 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, -7 predicate places. [2023-08-26 12:19:40,737 INFO L495 AbstractCegarLoop]: Abstraction has has 14 places, 7 transitions, 19 flow [2023-08-26 12:19:40,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 94.33333333333333) internal successors, (283), 3 states have internal predecessors, (283), 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) [2023-08-26 12:19:40,737 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 12:19:40,738 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-26 12:19:40,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-26 12:19:40,738 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-26 12:19:40,738 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 12:19:40,738 INFO L85 PathProgramCache]: Analyzing trace with hash 1097078065, now seen corresponding path program 1 times [2023-08-26 12:19:40,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 12:19:40,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763287112] [2023-08-26 12:19:40,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 12:19:40,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 12:19:40,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 12:19:40,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 12:19:40,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 12:19:40,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763287112] [2023-08-26 12:19:40,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763287112] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 12:19:40,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 12:19:40,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 12:19:40,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413289437] [2023-08-26 12:19:40,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 12:19:40,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 12:19:40,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 12:19:40,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 12:19:40,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 12:19:40,857 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 274 [2023-08-26 12:19:40,858 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 14 places, 7 transitions, 19 flow. Second operand has 3 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 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) [2023-08-26 12:19:40,858 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 12:19:40,858 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 274 [2023-08-26 12:19:40,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 12:19:40,879 INFO L124 PetriNetUnfolderBase]: 2/10 cut-off events. [2023-08-26 12:19:40,879 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-26 12:19:40,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29 conditions, 10 events. 2/10 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 7 event pairs, 1 based on Foata normal form. 1/11 useless extension candidates. Maximal degree in co-relation 24. Up to 7 conditions per place. [2023-08-26 12:19:40,884 INFO L140 encePairwiseOnDemand]: 272/274 looper letters, 0 selfloop transitions, 0 changer transitions 7/7 dead transitions. [2023-08-26 12:19:40,885 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 15 places, 7 transitions, 33 flow [2023-08-26 12:19:40,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 12:19:40,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 12:19:40,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 287 transitions. [2023-08-26 12:19:40,886 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3491484184914842 [2023-08-26 12:19:40,886 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 287 transitions. [2023-08-26 12:19:40,886 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 287 transitions. [2023-08-26 12:19:40,887 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 12:19:40,887 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 287 transitions. [2023-08-26 12:19:40,888 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 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) [2023-08-26 12:19:40,890 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 274.0) internal successors, (1096), 4 states have internal predecessors, (1096), 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) [2023-08-26 12:19:40,890 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 274.0) internal successors, (1096), 4 states have internal predecessors, (1096), 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) [2023-08-26 12:19:40,891 INFO L175 Difference]: Start difference. First operand has 14 places, 7 transitions, 19 flow. Second operand 3 states and 287 transitions. [2023-08-26 12:19:40,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 15 places, 7 transitions, 33 flow [2023-08-26 12:19:40,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 14 places, 7 transitions, 32 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 12:19:40,891 INFO L231 Difference]: Finished difference. Result has 14 places, 0 transitions, 0 flow [2023-08-26 12:19:40,891 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=274, PETRI_DIFFERENCE_MINUEND_FLOW=16, PETRI_DIFFERENCE_MINUEND_PLACES=12, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=6, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=6, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=14, PETRI_TRANSITIONS=0} [2023-08-26 12:19:40,893 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, -7 predicate places. [2023-08-26 12:19:40,893 INFO L495 AbstractCegarLoop]: Abstraction has has 14 places, 0 transitions, 0 flow [2023-08-26 12:19:40,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 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) [2023-08-26 12:19:40,896 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONASSERT (11 of 12 remaining) [2023-08-26 12:19:40,896 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (10 of 12 remaining) [2023-08-26 12:19:40,897 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 12 remaining) [2023-08-26 12:19:40,897 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 12 remaining) [2023-08-26 12:19:40,897 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONASSERT (7 of 12 remaining) [2023-08-26 12:19:40,897 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 12 remaining) [2023-08-26 12:19:40,898 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 12 remaining) [2023-08-26 12:19:40,898 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 12 remaining) [2023-08-26 12:19:40,898 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 12 remaining) [2023-08-26 12:19:40,901 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONASSERT (2 of 12 remaining) [2023-08-26 12:19:40,901 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 12 remaining) [2023-08-26 12:19:40,902 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONASSERT (0 of 12 remaining) [2023-08-26 12:19:40,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-26 12:19:40,902 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-08-26 12:19:40,906 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-26 12:19:40,907 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-26 12:19:40,910 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 12:19:40 BasicIcfg [2023-08-26 12:19:40,910 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-26 12:19:40,911 INFO L158 Benchmark]: Toolchain (without parser) took 6936.38ms. Allocated memory was 352.3MB in the beginning and 425.7MB in the end (delta: 73.4MB). Free memory was 325.9MB in the beginning and 364.7MB in the end (delta: -38.8MB). Peak memory consumption was 36.6MB. Max. memory is 16.0GB. [2023-08-26 12:19:40,913 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 352.3MB. Free memory is still 329.1MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-26 12:19:40,913 INFO L158 Benchmark]: CACSL2BoogieTranslator took 981.98ms. Allocated memory is still 352.3MB. Free memory was 325.7MB in the beginning and 319.0MB in the end (delta: 6.8MB). Peak memory consumption was 59.2MB. Max. memory is 16.0GB. [2023-08-26 12:19:40,917 INFO L158 Benchmark]: Boogie Procedure Inliner took 70.46ms. Allocated memory is still 352.3MB. Free memory was 319.0MB in the beginning and 315.9MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2023-08-26 12:19:40,918 INFO L158 Benchmark]: Boogie Preprocessor took 33.17ms. Allocated memory is still 352.3MB. Free memory was 315.9MB in the beginning and 313.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-26 12:19:40,918 INFO L158 Benchmark]: RCFGBuilder took 474.08ms. Allocated memory is still 352.3MB. Free memory was 313.8MB in the beginning and 292.8MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. [2023-08-26 12:19:40,918 INFO L158 Benchmark]: TraceAbstraction took 5372.04ms. Allocated memory was 352.3MB in the beginning and 425.7MB in the end (delta: 73.4MB). Free memory was 291.8MB in the beginning and 364.7MB in the end (delta: -72.8MB). Peak memory consumption was 431.0kB. Max. memory is 16.0GB. [2023-08-26 12:19:40,920 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 352.3MB. Free memory is still 329.1MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 981.98ms. Allocated memory is still 352.3MB. Free memory was 325.7MB in the beginning and 319.0MB in the end (delta: 6.8MB). Peak memory consumption was 59.2MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 70.46ms. Allocated memory is still 352.3MB. Free memory was 319.0MB in the beginning and 315.9MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * Boogie Preprocessor took 33.17ms. Allocated memory is still 352.3MB. Free memory was 315.9MB in the beginning and 313.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 474.08ms. Allocated memory is still 352.3MB. Free memory was 313.8MB in the beginning and 292.8MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. * TraceAbstraction took 5372.04ms. Allocated memory was 352.3MB in the beginning and 425.7MB in the end (delta: 73.4MB). Free memory was 291.8MB in the beginning and 364.7MB in the end (delta: -72.8MB). Peak memory consumption was 431.0kB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 237]: Unsoundness Warning unspecified type, defaulting to int C: short [237] - GenericResultAtLocation [Line: 237]: Unsoundness Warning unspecified type, defaulting to int C: short [237] - GenericResultAtLocation [Line: 729]: Unsoundness Warning unspecified type, defaulting to int C: unsigned short [729] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.1s, 109 PlacesBefore, 21 PlacesAfterwards, 112 TransitionsBefore, 18 TransitionsAfterwards, 646 CoEnabledTransitionPairs, 9 FixpointIterations, 96 TrivialSequentialCompositions, 38 ConcurrentSequentialCompositions, 7 TrivialYvCompositions, 5 ConcurrentYvCompositions, 6 ChoiceCompositions, 152 TotalNumberOfCompositions, 615 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 615, independent: 615, independent conditional: 0, independent unconditional: 615, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 355, independent: 355, independent conditional: 0, independent unconditional: 355, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 615, independent: 260, independent conditional: 0, independent unconditional: 260, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 355, unknown conditional: 0, unknown unconditional: 355] , Statistics on independence cache: Total cache size (in pairs): 6, Positive cache size: 6, Positive conditional cache size: 0, Positive unconditional cache size: 6, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 1691]: assertion always holds For all program executions holds that assertion always holds at this location - PositiveResult [Line: 1691]: assertion always holds For all program executions holds that assertion always holds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 1691]: assertion always holds For all program executions holds that assertion always holds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 1691]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 132 locations, 12 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: 5.2s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 7 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 7 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 58 IncrementalHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 0 mSDtfsCounter, 58 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=42occurred in iteration=0, InterpolantAutomatonStates: 14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 21 NumberOfCodeBlocks, 21 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 16 ConstructedInterpolants, 0 QuantifiedInterpolants, 91 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 - AllSpecificationsHoldResult: All specifications hold 10 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-26 12:19:40,939 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...