/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/goblint-regression/13-privatized_24-multiple-protecting_true.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-26 12:26:59,446 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-26 12:26:59,512 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 12:26:59,515 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-26 12:26:59,515 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-26 12:26:59,532 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-26 12:26:59,532 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-26 12:26:59,533 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-26 12:26:59,533 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-26 12:26:59,536 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-26 12:26:59,536 INFO L153 SettingsManager]: * Use SBE=true [2023-08-26 12:26:59,536 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-26 12:26:59,536 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-26 12:26:59,537 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-26 12:26:59,537 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-26 12:26:59,538 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-26 12:26:59,538 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-26 12:26:59,538 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-26 12:26:59,538 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-26 12:26:59,538 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-26 12:26:59,538 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-26 12:26:59,539 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-26 12:26:59,539 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-26 12:26:59,539 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-26 12:26:59,540 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-26 12:26:59,540 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-26 12:26:59,540 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-26 12:26:59,540 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 12:26:59,540 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-26 12:26:59,540 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-26 12:26:59,541 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-26 12:26:59,541 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-26 12:26:59,541 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-26 12:26:59,541 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-26 12:26:59,541 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-26 12:26:59,542 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer base address is valid at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer to allocated memory at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check array bounds for arrays that are off heap -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check if freed pointer was valid -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Adapt memory model on pointer casts if necessary -> true [2023-08-26 12:26:59,786 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-26 12:26:59,799 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-26 12:26:59,801 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-26 12:26:59,801 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-26 12:26:59,802 INFO L274 PluginConnector]: CDTParser initialized [2023-08-26 12:26:59,803 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/13-privatized_24-multiple-protecting_true.i [2023-08-26 12:27:00,681 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-26 12:27:00,888 INFO L384 CDTParser]: Found 1 translation units. [2023-08-26 12:27:00,889 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_24-multiple-protecting_true.i [2023-08-26 12:27:00,899 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/84aa4cc92/0179bcb5ed7f45ce9bc764aa93ebaeb4/FLAG9ed764ca6 [2023-08-26 12:27:00,908 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/84aa4cc92/0179bcb5ed7f45ce9bc764aa93ebaeb4 [2023-08-26 12:27:00,909 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-26 12:27:00,910 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-26 12:27:00,911 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-26 12:27:00,911 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-26 12:27:00,913 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-26 12:27:00,913 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 12:27:00" (1/1) ... [2023-08-26 12:27:00,914 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1935687c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:27:00, skipping insertion in model container [2023-08-26 12:27:00,914 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 12:27:00" (1/1) ... [2023-08-26 12:27:00,941 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-26 12:27:01,143 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 12:27:01,157 INFO L201 MainTranslator]: Completed pre-run [2023-08-26 12:27:01,172 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [231] [2023-08-26 12:27:01,181 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [232] [2023-08-26 12:27:01,191 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 12:27:01,228 INFO L206 MainTranslator]: Completed translation [2023-08-26 12:27:01,230 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:27:01 WrapperNode [2023-08-26 12:27:01,230 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-26 12:27:01,231 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-26 12:27:01,231 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-26 12:27:01,231 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-26 12:27:01,235 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:27:01" (1/1) ... [2023-08-26 12:27:01,259 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:27:01" (1/1) ... [2023-08-26 12:27:01,282 INFO L138 Inliner]: procedures = 162, calls = 47, calls flagged for inlining = 7, calls inlined = 10, statements flattened = 102 [2023-08-26 12:27:01,282 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-26 12:27:01,283 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-26 12:27:01,284 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-26 12:27:01,284 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-26 12:27:01,289 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:27:01" (1/1) ... [2023-08-26 12:27:01,290 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:27:01" (1/1) ... [2023-08-26 12:27:01,301 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:27:01" (1/1) ... [2023-08-26 12:27:01,302 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:27:01" (1/1) ... [2023-08-26 12:27:01,308 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:27:01" (1/1) ... [2023-08-26 12:27:01,312 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:27:01" (1/1) ... [2023-08-26 12:27:01,313 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:27:01" (1/1) ... [2023-08-26 12:27:01,320 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:27:01" (1/1) ... [2023-08-26 12:27:01,322 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-26 12:27:01,323 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-26 12:27:01,323 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-26 12:27:01,323 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-26 12:27:01,323 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:27:01" (1/1) ... [2023-08-26 12:27:01,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 12:27:01,337 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 12:27:01,346 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 12:27:01,364 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 12:27:01,372 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-26 12:27:01,372 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-26 12:27:01,372 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-26 12:27:01,372 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-26 12:27:01,372 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-26 12:27:01,372 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-26 12:27:01,372 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-26 12:27:01,372 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-26 12:27:01,372 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-26 12:27:01,372 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-26 12:27:01,373 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-26 12:27:01,373 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 12:27:01,488 INFO L236 CfgBuilder]: Building ICFG [2023-08-26 12:27:01,490 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-26 12:27:01,729 INFO L277 CfgBuilder]: Performing block encoding [2023-08-26 12:27:01,734 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-26 12:27:01,735 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-26 12:27:01,736 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 12:27:01 BoogieIcfgContainer [2023-08-26 12:27:01,736 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-26 12:27:01,737 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-26 12:27:01,737 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-26 12:27:01,739 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-26 12:27:01,739 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 12:27:00" (1/3) ... [2023-08-26 12:27:01,740 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36d74db1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 12:27:01, skipping insertion in model container [2023-08-26 12:27:01,740 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:27:01" (2/3) ... [2023-08-26 12:27:01,740 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36d74db1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 12:27:01, skipping insertion in model container [2023-08-26 12:27:01,740 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 12:27:01" (3/3) ... [2023-08-26 12:27:01,741 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_24-multiple-protecting_true.i [2023-08-26 12:27:01,752 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-26 12:27:01,752 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-08-26 12:27:01,753 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-26 12:27:01,791 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-26 12:27:01,818 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 147 places, 151 transitions, 310 flow [2023-08-26 12:27:01,873 INFO L124 PetriNetUnfolderBase]: 8/150 cut-off events. [2023-08-26 12:27:01,873 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-26 12:27:01,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155 conditions, 150 events. 8/150 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 181 event pairs, 0 based on Foata normal form. 0/134 useless extension candidates. Maximal degree in co-relation 104. Up to 2 conditions per place. [2023-08-26 12:27:01,876 INFO L82 GeneralOperation]: Start removeDead. Operand has 147 places, 151 transitions, 310 flow [2023-08-26 12:27:01,880 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 138 places, 142 transitions, 287 flow [2023-08-26 12:27:01,882 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 12:27:01,888 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 138 places, 142 transitions, 287 flow [2023-08-26 12:27:01,889 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 138 places, 142 transitions, 287 flow [2023-08-26 12:27:01,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 138 places, 142 transitions, 287 flow [2023-08-26 12:27:01,912 INFO L124 PetriNetUnfolderBase]: 8/142 cut-off events. [2023-08-26 12:27:01,912 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 12:27:01,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 146 conditions, 142 events. 8/142 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 175 event pairs, 0 based on Foata normal form. 0/127 useless extension candidates. Maximal degree in co-relation 103. Up to 2 conditions per place. [2023-08-26 12:27:01,914 INFO L119 LiptonReduction]: Number of co-enabled transitions 4620 [2023-08-26 12:27:04,841 INFO L134 LiptonReduction]: Checked pairs total: 15942 [2023-08-26 12:27:04,841 INFO L136 LiptonReduction]: Total number of compositions: 133 [2023-08-26 12:27:04,850 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 12:27:04,854 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;@2e96ef65, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 12:27:04,854 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2023-08-26 12:27:04,854 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 12:27:04,855 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-08-26 12:27:04,855 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 12:27:04,855 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 12:27:04,855 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-26 12:27:04,855 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 6 more)] === [2023-08-26 12:27:04,858 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 12:27:04,858 INFO L85 PathProgramCache]: Analyzing trace with hash 535, now seen corresponding path program 1 times [2023-08-26 12:27:04,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 12:27:04,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842098824] [2023-08-26 12:27:04,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 12:27:04,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 12:27:04,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 12:27:04,925 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 12:27:04,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 12:27:04,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842098824] [2023-08-26 12:27:04,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842098824] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 12:27:04,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 12:27:04,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-26 12:27:04,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555312934] [2023-08-26 12:27:04,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 12:27:04,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-26 12:27:04,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 12:27:04,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-26 12:27:04,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-26 12:27:04,948 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 284 [2023-08-26 12:27:04,950 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 52 transitions, 107 flow. Second operand has 2 states, 2 states have (on average 137.5) internal successors, (275), 2 states have internal predecessors, (275), 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 12:27:04,950 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 12:27:04,950 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 284 [2023-08-26 12:27:04,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 12:27:05,075 INFO L124 PetriNetUnfolderBase]: 288/668 cut-off events. [2023-08-26 12:27:05,075 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 12:27:05,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1287 conditions, 668 events. 288/668 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 3083 event pairs, 288 based on Foata normal form. 52/596 useless extension candidates. Maximal degree in co-relation 1278. Up to 615 conditions per place. [2023-08-26 12:27:05,081 INFO L140 encePairwiseOnDemand]: 276/284 looper letters, 34 selfloop transitions, 0 changer transitions 4/43 dead transitions. [2023-08-26 12:27:05,082 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 43 transitions, 165 flow [2023-08-26 12:27:05,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-26 12:27:05,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-26 12:27:05,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 320 transitions. [2023-08-26 12:27:05,095 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5633802816901409 [2023-08-26 12:27:05,095 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 320 transitions. [2023-08-26 12:27:05,096 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 320 transitions. [2023-08-26 12:27:05,098 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 12:27:05,100 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 320 transitions. [2023-08-26 12:27:05,103 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 160.0) internal successors, (320), 2 states have internal predecessors, (320), 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 12:27:05,106 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 284.0) internal successors, (852), 3 states have internal predecessors, (852), 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 12:27:05,106 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 284.0) internal successors, (852), 3 states have internal predecessors, (852), 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 12:27:05,108 INFO L175 Difference]: Start difference. First operand has 50 places, 52 transitions, 107 flow. Second operand 2 states and 320 transitions. [2023-08-26 12:27:05,108 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 43 transitions, 165 flow [2023-08-26 12:27:05,110 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 43 transitions, 164 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 12:27:05,111 INFO L231 Difference]: Finished difference. Result has 47 places, 39 transitions, 80 flow [2023-08-26 12:27:05,112 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=284, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=80, PETRI_PLACES=47, PETRI_TRANSITIONS=39} [2023-08-26 12:27:05,115 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -3 predicate places. [2023-08-26 12:27:05,115 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 39 transitions, 80 flow [2023-08-26 12:27:05,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 137.5) internal successors, (275), 2 states have internal predecessors, (275), 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 12:27:05,115 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 12:27:05,115 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-26 12:27:05,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-26 12:27:05,116 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 6 more)] === [2023-08-26 12:27:05,116 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 12:27:05,116 INFO L85 PathProgramCache]: Analyzing trace with hash 506537043, now seen corresponding path program 1 times [2023-08-26 12:27:05,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 12:27:05,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809352538] [2023-08-26 12:27:05,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 12:27:05,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 12:27:05,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 12:27:05,283 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 12:27:05,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 12:27:05,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809352538] [2023-08-26 12:27:05,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809352538] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 12:27:05,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 12:27:05,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 12:27:05,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575112912] [2023-08-26 12:27:05,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 12:27:05,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 12:27:05,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 12:27:05,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 12:27:05,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 12:27:05,285 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 284 [2023-08-26 12:27:05,286 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 39 transitions, 80 flow. Second operand has 3 states, 3 states have (on average 130.66666666666666) internal successors, (392), 3 states have internal predecessors, (392), 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 12:27:05,286 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 12:27:05,286 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 284 [2023-08-26 12:27:05,286 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 12:27:05,360 INFO L124 PetriNetUnfolderBase]: 231/575 cut-off events. [2023-08-26 12:27:05,361 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 12:27:05,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1076 conditions, 575 events. 231/575 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 2645 event pairs, 61 based on Foata normal form. 0/517 useless extension candidates. Maximal degree in co-relation 1073. Up to 408 conditions per place. [2023-08-26 12:27:05,363 INFO L140 encePairwiseOnDemand]: 279/284 looper letters, 49 selfloop transitions, 2 changer transitions 0/56 dead transitions. [2023-08-26 12:27:05,363 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 56 transitions, 216 flow [2023-08-26 12:27:05,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 12:27:05,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 12:27:05,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 441 transitions. [2023-08-26 12:27:05,364 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5176056338028169 [2023-08-26 12:27:05,364 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 441 transitions. [2023-08-26 12:27:05,364 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 441 transitions. [2023-08-26 12:27:05,364 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 12:27:05,364 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 441 transitions. [2023-08-26 12:27:05,365 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 147.0) internal successors, (441), 3 states have internal predecessors, (441), 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 12:27:05,367 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 284.0) internal successors, (1136), 4 states have internal predecessors, (1136), 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 12:27:05,367 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 284.0) internal successors, (1136), 4 states have internal predecessors, (1136), 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 12:27:05,367 INFO L175 Difference]: Start difference. First operand has 47 places, 39 transitions, 80 flow. Second operand 3 states and 441 transitions. [2023-08-26 12:27:05,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 56 transitions, 216 flow [2023-08-26 12:27:05,368 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 56 transitions, 216 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 12:27:05,368 INFO L231 Difference]: Finished difference. Result has 46 places, 39 transitions, 92 flow [2023-08-26 12:27:05,369 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=284, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=92, PETRI_PLACES=46, PETRI_TRANSITIONS=39} [2023-08-26 12:27:05,369 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -4 predicate places. [2023-08-26 12:27:05,369 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 39 transitions, 92 flow [2023-08-26 12:27:05,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 130.66666666666666) internal successors, (392), 3 states have internal predecessors, (392), 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 12:27:05,370 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 12:27:05,370 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 12:27:05,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-26 12:27:05,370 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 6 more)] === [2023-08-26 12:27:05,370 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 12:27:05,370 INFO L85 PathProgramCache]: Analyzing trace with hash 1979724428, now seen corresponding path program 1 times [2023-08-26 12:27:05,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 12:27:05,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942103954] [2023-08-26 12:27:05,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 12:27:05,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 12:27:05,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 12:27:05,419 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 12:27:05,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 12:27:05,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942103954] [2023-08-26 12:27:05,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942103954] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 12:27:05,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 12:27:05,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 12:27:05,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872952748] [2023-08-26 12:27:05,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 12:27:05,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 12:27:05,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 12:27:05,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 12:27:05,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 12:27:05,421 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 284 [2023-08-26 12:27:05,421 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 39 transitions, 92 flow. Second operand has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:27:05,421 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 12:27:05,421 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 284 [2023-08-26 12:27:05,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 12:27:05,528 INFO L124 PetriNetUnfolderBase]: 378/808 cut-off events. [2023-08-26 12:27:05,528 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2023-08-26 12:27:05,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1730 conditions, 808 events. 378/808 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 3684 event pairs, 195 based on Foata normal form. 6/774 useless extension candidates. Maximal degree in co-relation 1725. Up to 652 conditions per place. [2023-08-26 12:27:05,531 INFO L140 encePairwiseOnDemand]: 269/284 looper letters, 59 selfloop transitions, 15 changer transitions 0/74 dead transitions. [2023-08-26 12:27:05,531 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 74 transitions, 319 flow [2023-08-26 12:27:05,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 12:27:05,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 12:27:05,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 397 transitions. [2023-08-26 12:27:05,533 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.465962441314554 [2023-08-26 12:27:05,533 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 397 transitions. [2023-08-26 12:27:05,533 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 397 transitions. [2023-08-26 12:27:05,533 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 12:27:05,533 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 397 transitions. [2023-08-26 12:27:05,534 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 132.33333333333334) internal successors, (397), 3 states have internal predecessors, (397), 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 12:27:05,535 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 284.0) internal successors, (1136), 4 states have internal predecessors, (1136), 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 12:27:05,535 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 284.0) internal successors, (1136), 4 states have internal predecessors, (1136), 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 12:27:05,536 INFO L175 Difference]: Start difference. First operand has 46 places, 39 transitions, 92 flow. Second operand 3 states and 397 transitions. [2023-08-26 12:27:05,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 74 transitions, 319 flow [2023-08-26 12:27:05,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 74 transitions, 313 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 12:27:05,538 INFO L231 Difference]: Finished difference. Result has 47 places, 52 transitions, 185 flow [2023-08-26 12:27:05,538 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=284, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=185, PETRI_PLACES=47, PETRI_TRANSITIONS=52} [2023-08-26 12:27:05,539 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -3 predicate places. [2023-08-26 12:27:05,539 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 52 transitions, 185 flow [2023-08-26 12:27:05,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:27:05,539 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 12:27:05,539 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 12:27:05,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-26 12:27:05,540 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 6 more)] === [2023-08-26 12:27:05,540 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 12:27:05,540 INFO L85 PathProgramCache]: Analyzing trace with hash 1495917442, now seen corresponding path program 1 times [2023-08-26 12:27:05,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 12:27:05,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275157457] [2023-08-26 12:27:05,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 12:27:05,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 12:27:05,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 12:27:05,659 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 12:27:05,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 12:27:05,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275157457] [2023-08-26 12:27:05,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275157457] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 12:27:05,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 12:27:05,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 12:27:05,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473323138] [2023-08-26 12:27:05,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 12:27:05,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 12:27:05,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 12:27:05,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 12:27:05,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-26 12:27:05,664 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 284 [2023-08-26 12:27:05,664 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 52 transitions, 185 flow. Second operand has 4 states, 4 states have (on average 103.25) internal successors, (413), 4 states have internal predecessors, (413), 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 12:27:05,664 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 12:27:05,664 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 284 [2023-08-26 12:27:05,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 12:27:05,786 INFO L124 PetriNetUnfolderBase]: 236/555 cut-off events. [2023-08-26 12:27:05,787 INFO L125 PetriNetUnfolderBase]: For 118/118 co-relation queries the response was YES. [2023-08-26 12:27:05,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1432 conditions, 555 events. 236/555 cut-off events. For 118/118 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 2616 event pairs, 72 based on Foata normal form. 13/537 useless extension candidates. Maximal degree in co-relation 1426. Up to 346 conditions per place. [2023-08-26 12:27:05,789 INFO L140 encePairwiseOnDemand]: 276/284 looper letters, 71 selfloop transitions, 11 changer transitions 0/82 dead transitions. [2023-08-26 12:27:05,789 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 82 transitions, 427 flow [2023-08-26 12:27:05,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 12:27:05,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 12:27:05,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 480 transitions. [2023-08-26 12:27:05,790 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4225352112676056 [2023-08-26 12:27:05,791 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 480 transitions. [2023-08-26 12:27:05,791 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 480 transitions. [2023-08-26 12:27:05,791 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 12:27:05,791 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 480 transitions. [2023-08-26 12:27:05,792 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 120.0) internal successors, (480), 4 states have internal predecessors, (480), 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 12:27:05,793 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 284.0) internal successors, (1420), 5 states have internal predecessors, (1420), 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 12:27:05,794 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 284.0) internal successors, (1420), 5 states have internal predecessors, (1420), 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 12:27:05,794 INFO L175 Difference]: Start difference. First operand has 47 places, 52 transitions, 185 flow. Second operand 4 states and 480 transitions. [2023-08-26 12:27:05,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 82 transitions, 427 flow [2023-08-26 12:27:05,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 82 transitions, 417 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 12:27:05,796 INFO L231 Difference]: Finished difference. Result has 50 places, 52 transitions, 212 flow [2023-08-26 12:27:05,796 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=284, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=212, PETRI_PLACES=50, PETRI_TRANSITIONS=52} [2023-08-26 12:27:05,797 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 0 predicate places. [2023-08-26 12:27:05,797 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 52 transitions, 212 flow [2023-08-26 12:27:05,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 103.25) internal successors, (413), 4 states have internal predecessors, (413), 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 12:27:05,797 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 12:27:05,797 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 12:27:05,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-26 12:27:05,798 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 6 more)] === [2023-08-26 12:27:05,798 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 12:27:05,798 INFO L85 PathProgramCache]: Analyzing trace with hash -1442195088, now seen corresponding path program 1 times [2023-08-26 12:27:05,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 12:27:05,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373472124] [2023-08-26 12:27:05,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 12:27:05,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 12:27:05,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 12:27:05,841 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 12:27:05,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 12:27:05,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373472124] [2023-08-26 12:27:05,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373472124] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 12:27:05,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 12:27:05,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 12:27:05,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756253200] [2023-08-26 12:27:05,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 12:27:05,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 12:27:05,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 12:27:05,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 12:27:05,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 12:27:05,843 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 284 [2023-08-26 12:27:05,843 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 52 transitions, 212 flow. Second operand has 3 states, 3 states have (on average 135.0) internal successors, (405), 3 states have internal predecessors, (405), 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 12:27:05,843 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 12:27:05,843 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 284 [2023-08-26 12:27:05,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 12:27:05,918 INFO L124 PetriNetUnfolderBase]: 208/513 cut-off events. [2023-08-26 12:27:05,918 INFO L125 PetriNetUnfolderBase]: For 168/169 co-relation queries the response was YES. [2023-08-26 12:27:05,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1385 conditions, 513 events. 208/513 cut-off events. For 168/169 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 2331 event pairs, 86 based on Foata normal form. 0/484 useless extension candidates. Maximal degree in co-relation 1378. Up to 258 conditions per place. [2023-08-26 12:27:05,921 INFO L140 encePairwiseOnDemand]: 281/284 looper letters, 60 selfloop transitions, 2 changer transitions 0/71 dead transitions. [2023-08-26 12:27:05,921 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 71 transitions, 401 flow [2023-08-26 12:27:05,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 12:27:05,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 12:27:05,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 447 transitions. [2023-08-26 12:27:05,924 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5246478873239436 [2023-08-26 12:27:05,924 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 447 transitions. [2023-08-26 12:27:05,925 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 447 transitions. [2023-08-26 12:27:05,925 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 12:27:05,925 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 447 transitions. [2023-08-26 12:27:05,926 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 149.0) internal successors, (447), 3 states have internal predecessors, (447), 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 12:27:05,927 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 284.0) internal successors, (1136), 4 states have internal predecessors, (1136), 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 12:27:05,927 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 284.0) internal successors, (1136), 4 states have internal predecessors, (1136), 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 12:27:05,927 INFO L175 Difference]: Start difference. First operand has 50 places, 52 transitions, 212 flow. Second operand 3 states and 447 transitions. [2023-08-26 12:27:05,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 71 transitions, 401 flow [2023-08-26 12:27:05,929 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 71 transitions, 400 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 12:27:05,930 INFO L231 Difference]: Finished difference. Result has 52 places, 52 transitions, 219 flow [2023-08-26 12:27:05,930 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=284, PETRI_DIFFERENCE_MINUEND_FLOW=211, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=219, PETRI_PLACES=52, PETRI_TRANSITIONS=52} [2023-08-26 12:27:05,930 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 2 predicate places. [2023-08-26 12:27:05,930 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 52 transitions, 219 flow [2023-08-26 12:27:05,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 135.0) internal successors, (405), 3 states have internal predecessors, (405), 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 12:27:05,931 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 12:27:05,931 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 12:27:05,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-26 12:27:05,931 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 6 more)] === [2023-08-26 12:27:05,931 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 12:27:05,931 INFO L85 PathProgramCache]: Analyzing trace with hash 1280456772, now seen corresponding path program 1 times [2023-08-26 12:27:05,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 12:27:05,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407231864] [2023-08-26 12:27:05,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 12:27:05,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 12:27:05,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 12:27:06,024 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 12:27:06,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 12:27:06,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407231864] [2023-08-26 12:27:06,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407231864] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 12:27:06,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 12:27:06,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 12:27:06,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379332269] [2023-08-26 12:27:06,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 12:27:06,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 12:27:06,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 12:27:06,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 12:27:06,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-26 12:27:06,027 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 284 [2023-08-26 12:27:06,027 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 52 transitions, 219 flow. Second operand has 4 states, 4 states have (on average 131.5) internal successors, (526), 4 states have internal predecessors, (526), 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 12:27:06,027 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 12:27:06,027 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 284 [2023-08-26 12:27:06,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 12:27:06,110 INFO L124 PetriNetUnfolderBase]: 182/467 cut-off events. [2023-08-26 12:27:06,111 INFO L125 PetriNetUnfolderBase]: For 173/174 co-relation queries the response was YES. [2023-08-26 12:27:06,111 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1300 conditions, 467 events. 182/467 cut-off events. For 173/174 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 2056 event pairs, 148 based on Foata normal form. 30/474 useless extension candidates. Maximal degree in co-relation 1292. Up to 374 conditions per place. [2023-08-26 12:27:06,112 INFO L140 encePairwiseOnDemand]: 278/284 looper letters, 46 selfloop transitions, 3 changer transitions 0/58 dead transitions. [2023-08-26 12:27:06,112 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 58 transitions, 349 flow [2023-08-26 12:27:06,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 12:27:06,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 12:27:06,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 556 transitions. [2023-08-26 12:27:06,114 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4894366197183099 [2023-08-26 12:27:06,114 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 556 transitions. [2023-08-26 12:27:06,114 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 556 transitions. [2023-08-26 12:27:06,114 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 12:27:06,114 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 556 transitions. [2023-08-26 12:27:06,115 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 139.0) internal successors, (556), 4 states have internal predecessors, (556), 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 12:27:06,117 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 284.0) internal successors, (1420), 5 states have internal predecessors, (1420), 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 12:27:06,118 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 284.0) internal successors, (1420), 5 states have internal predecessors, (1420), 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 12:27:06,118 INFO L175 Difference]: Start difference. First operand has 52 places, 52 transitions, 219 flow. Second operand 4 states and 556 transitions. [2023-08-26 12:27:06,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 58 transitions, 349 flow [2023-08-26 12:27:06,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 58 transitions, 345 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 12:27:06,120 INFO L231 Difference]: Finished difference. Result has 52 places, 50 transitions, 218 flow [2023-08-26 12:27:06,120 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=284, PETRI_DIFFERENCE_MINUEND_FLOW=207, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=218, PETRI_PLACES=52, PETRI_TRANSITIONS=50} [2023-08-26 12:27:06,120 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 2 predicate places. [2023-08-26 12:27:06,120 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 50 transitions, 218 flow [2023-08-26 12:27:06,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 131.5) internal successors, (526), 4 states have internal predecessors, (526), 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 12:27:06,121 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 12:27:06,121 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 12:27:06,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-26 12:27:06,121 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 6 more)] === [2023-08-26 12:27:06,121 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 12:27:06,121 INFO L85 PathProgramCache]: Analyzing trace with hash -435435821, now seen corresponding path program 1 times [2023-08-26 12:27:06,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 12:27:06,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391093468] [2023-08-26 12:27:06,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 12:27:06,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 12:27:06,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 12:27:06,176 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 12:27:06,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 12:27:06,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391093468] [2023-08-26 12:27:06,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391093468] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 12:27:06,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 12:27:06,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 12:27:06,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096894629] [2023-08-26 12:27:06,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 12:27:06,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 12:27:06,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 12:27:06,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 12:27:06,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 12:27:06,178 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 284 [2023-08-26 12:27:06,178 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 50 transitions, 218 flow. Second operand has 3 states, 3 states have (on average 128.0) internal successors, (384), 3 states have internal predecessors, (384), 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 12:27:06,179 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 12:27:06,179 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 284 [2023-08-26 12:27:06,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 12:27:06,223 INFO L124 PetriNetUnfolderBase]: 163/422 cut-off events. [2023-08-26 12:27:06,223 INFO L125 PetriNetUnfolderBase]: For 156/157 co-relation queries the response was YES. [2023-08-26 12:27:06,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1157 conditions, 422 events. 163/422 cut-off events. For 156/157 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1773 event pairs, 145 based on Foata normal form. 0/419 useless extension candidates. Maximal degree in co-relation 1148. Up to 375 conditions per place. [2023-08-26 12:27:06,224 INFO L140 encePairwiseOnDemand]: 282/284 looper letters, 37 selfloop transitions, 1 changer transitions 0/47 dead transitions. [2023-08-26 12:27:06,225 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 47 transitions, 274 flow [2023-08-26 12:27:06,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 12:27:06,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 12:27:06,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 398 transitions. [2023-08-26 12:27:06,226 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4671361502347418 [2023-08-26 12:27:06,226 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 398 transitions. [2023-08-26 12:27:06,226 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 398 transitions. [2023-08-26 12:27:06,226 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 12:27:06,226 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 398 transitions. [2023-08-26 12:27:06,227 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 132.66666666666666) internal successors, (398), 3 states have internal predecessors, (398), 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 12:27:06,228 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 284.0) internal successors, (1136), 4 states have internal predecessors, (1136), 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 12:27:06,228 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 284.0) internal successors, (1136), 4 states have internal predecessors, (1136), 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 12:27:06,228 INFO L175 Difference]: Start difference. First operand has 52 places, 50 transitions, 218 flow. Second operand 3 states and 398 transitions. [2023-08-26 12:27:06,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 47 transitions, 274 flow [2023-08-26 12:27:06,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 47 transitions, 264 flow, removed 1 selfloop flow, removed 4 redundant places. [2023-08-26 12:27:06,229 INFO L231 Difference]: Finished difference. Result has 49 places, 47 transitions, 190 flow [2023-08-26 12:27:06,230 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=284, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=190, PETRI_PLACES=49, PETRI_TRANSITIONS=47} [2023-08-26 12:27:06,230 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -1 predicate places. [2023-08-26 12:27:06,230 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 47 transitions, 190 flow [2023-08-26 12:27:06,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 128.0) internal successors, (384), 3 states have internal predecessors, (384), 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 12:27:06,230 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 12:27:06,230 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 12:27:06,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-26 12:27:06,231 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 6 more)] === [2023-08-26 12:27:06,231 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 12:27:06,231 INFO L85 PathProgramCache]: Analyzing trace with hash -435435822, now seen corresponding path program 1 times [2023-08-26 12:27:06,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 12:27:06,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763122763] [2023-08-26 12:27:06,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 12:27:06,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 12:27:06,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 12:27:06,276 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 12:27:06,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 12:27:06,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763122763] [2023-08-26 12:27:06,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763122763] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 12:27:06,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 12:27:06,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 12:27:06,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730737847] [2023-08-26 12:27:06,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 12:27:06,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 12:27:06,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 12:27:06,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 12:27:06,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 12:27:06,278 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 284 [2023-08-26 12:27:06,279 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 47 transitions, 190 flow. Second operand has 3 states, 3 states have (on average 127.0) internal successors, (381), 3 states have internal predecessors, (381), 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 12:27:06,279 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 12:27:06,279 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 284 [2023-08-26 12:27:06,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 12:27:06,319 INFO L124 PetriNetUnfolderBase]: 144/379 cut-off events. [2023-08-26 12:27:06,320 INFO L125 PetriNetUnfolderBase]: For 136/137 co-relation queries the response was YES. [2023-08-26 12:27:06,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 983 conditions, 379 events. 144/379 cut-off events. For 136/137 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1546 event pairs, 131 based on Foata normal form. 20/396 useless extension candidates. Maximal degree in co-relation 975. Up to 339 conditions per place. [2023-08-26 12:27:06,321 INFO L140 encePairwiseOnDemand]: 282/284 looper letters, 31 selfloop transitions, 1 changer transitions 5/43 dead transitions. [2023-08-26 12:27:06,321 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 43 transitions, 234 flow [2023-08-26 12:27:06,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 12:27:06,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 12:27:06,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 394 transitions. [2023-08-26 12:27:06,322 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4624413145539906 [2023-08-26 12:27:06,322 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 394 transitions. [2023-08-26 12:27:06,322 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 394 transitions. [2023-08-26 12:27:06,322 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 12:27:06,322 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 394 transitions. [2023-08-26 12:27:06,323 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 131.33333333333334) internal successors, (394), 3 states have internal predecessors, (394), 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 12:27:06,324 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 284.0) internal successors, (1136), 4 states have internal predecessors, (1136), 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 12:27:06,324 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 284.0) internal successors, (1136), 4 states have internal predecessors, (1136), 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 12:27:06,324 INFO L175 Difference]: Start difference. First operand has 49 places, 47 transitions, 190 flow. Second operand 3 states and 394 transitions. [2023-08-26 12:27:06,324 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 43 transitions, 234 flow [2023-08-26 12:27:06,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 43 transitions, 233 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 12:27:06,325 INFO L231 Difference]: Finished difference. Result has 49 places, 38 transitions, 145 flow [2023-08-26 12:27:06,325 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=284, PETRI_DIFFERENCE_MINUEND_FLOW=163, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=145, PETRI_PLACES=49, PETRI_TRANSITIONS=38} [2023-08-26 12:27:06,326 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -1 predicate places. [2023-08-26 12:27:06,326 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 38 transitions, 145 flow [2023-08-26 12:27:06,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 127.0) internal successors, (381), 3 states have internal predecessors, (381), 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 12:27:06,326 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 12:27:06,326 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 12:27:06,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-26 12:27:06,326 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 6 more)] === [2023-08-26 12:27:06,327 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 12:27:06,327 INFO L85 PathProgramCache]: Analyzing trace with hash -435164741, now seen corresponding path program 1 times [2023-08-26 12:27:06,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 12:27:06,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838241833] [2023-08-26 12:27:06,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 12:27:06,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 12:27:06,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 12:27:06,371 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 12:27:06,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 12:27:06,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838241833] [2023-08-26 12:27:06,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838241833] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 12:27:06,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 12:27:06,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 12:27:06,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328783228] [2023-08-26 12:27:06,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 12:27:06,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 12:27:06,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 12:27:06,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 12:27:06,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 12:27:06,372 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 284 [2023-08-26 12:27:06,373 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 38 transitions, 145 flow. Second operand has 3 states, 3 states have (on average 113.33333333333333) internal successors, (340), 3 states have internal predecessors, (340), 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 12:27:06,373 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 12:27:06,373 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 284 [2023-08-26 12:27:06,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 12:27:06,430 INFO L124 PetriNetUnfolderBase]: 60/234 cut-off events. [2023-08-26 12:27:06,430 INFO L125 PetriNetUnfolderBase]: For 102/102 co-relation queries the response was YES. [2023-08-26 12:27:06,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 665 conditions, 234 events. 60/234 cut-off events. For 102/102 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 921 event pairs, 24 based on Foata normal form. 42/276 useless extension candidates. Maximal degree in co-relation 657. Up to 122 conditions per place. [2023-08-26 12:27:06,431 INFO L140 encePairwiseOnDemand]: 266/284 looper letters, 28 selfloop transitions, 20 changer transitions 10/58 dead transitions. [2023-08-26 12:27:06,431 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 58 transitions, 348 flow [2023-08-26 12:27:06,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 12:27:06,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 12:27:06,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 380 transitions. [2023-08-26 12:27:06,432 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4460093896713615 [2023-08-26 12:27:06,432 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 380 transitions. [2023-08-26 12:27:06,432 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 380 transitions. [2023-08-26 12:27:06,433 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 12:27:06,433 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 380 transitions. [2023-08-26 12:27:06,433 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 126.66666666666667) internal successors, (380), 3 states have internal predecessors, (380), 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 12:27:06,434 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 284.0) internal successors, (1136), 4 states have internal predecessors, (1136), 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 12:27:06,434 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 284.0) internal successors, (1136), 4 states have internal predecessors, (1136), 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 12:27:06,434 INFO L175 Difference]: Start difference. First operand has 49 places, 38 transitions, 145 flow. Second operand 3 states and 380 transitions. [2023-08-26 12:27:06,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 58 transitions, 348 flow [2023-08-26 12:27:06,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 58 transitions, 341 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-08-26 12:27:06,436 INFO L231 Difference]: Finished difference. Result has 49 places, 42 transitions, 236 flow [2023-08-26 12:27:06,436 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=284, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=236, PETRI_PLACES=49, PETRI_TRANSITIONS=42} [2023-08-26 12:27:06,436 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -1 predicate places. [2023-08-26 12:27:06,436 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 42 transitions, 236 flow [2023-08-26 12:27:06,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 113.33333333333333) internal successors, (340), 3 states have internal predecessors, (340), 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 12:27:06,437 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 12:27:06,437 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 12:27:06,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-26 12:27:06,437 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 6 more)] === [2023-08-26 12:27:06,437 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 12:27:06,437 INFO L85 PathProgramCache]: Analyzing trace with hash -605279887, now seen corresponding path program 1 times [2023-08-26 12:27:06,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 12:27:06,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602265544] [2023-08-26 12:27:06,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 12:27:06,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 12:27:06,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 12:27:06,566 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 12:27:06,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 12:27:06,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602265544] [2023-08-26 12:27:06,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602265544] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 12:27:06,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 12:27:06,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-26 12:27:06,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984129959] [2023-08-26 12:27:06,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 12:27:06,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 12:27:06,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 12:27:06,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 12:27:06,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-26 12:27:06,568 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 284 [2023-08-26 12:27:06,569 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 42 transitions, 236 flow. Second operand has 5 states, 5 states have (on average 99.0) internal successors, (495), 5 states have internal predecessors, (495), 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 12:27:06,569 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 12:27:06,569 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 284 [2023-08-26 12:27:06,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 12:27:06,618 INFO L124 PetriNetUnfolderBase]: 48/198 cut-off events. [2023-08-26 12:27:06,619 INFO L125 PetriNetUnfolderBase]: For 173/173 co-relation queries the response was YES. [2023-08-26 12:27:06,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 716 conditions, 198 events. 48/198 cut-off events. For 173/173 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 723 event pairs, 11 based on Foata normal form. 2/200 useless extension candidates. Maximal degree in co-relation 707. Up to 187 conditions per place. [2023-08-26 12:27:06,619 INFO L140 encePairwiseOnDemand]: 280/284 looper letters, 40 selfloop transitions, 4 changer transitions 5/49 dead transitions. [2023-08-26 12:27:06,620 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 49 transitions, 369 flow [2023-08-26 12:27:06,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 12:27:06,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 12:27:06,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 421 transitions. [2023-08-26 12:27:06,621 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37059859154929575 [2023-08-26 12:27:06,621 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 421 transitions. [2023-08-26 12:27:06,621 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 421 transitions. [2023-08-26 12:27:06,621 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 12:27:06,621 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 421 transitions. [2023-08-26 12:27:06,622 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 105.25) internal successors, (421), 4 states have internal predecessors, (421), 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 12:27:06,624 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 284.0) internal successors, (1420), 5 states have internal predecessors, (1420), 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 12:27:06,624 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 284.0) internal successors, (1420), 5 states have internal predecessors, (1420), 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 12:27:06,624 INFO L175 Difference]: Start difference. First operand has 49 places, 42 transitions, 236 flow. Second operand 4 states and 421 transitions. [2023-08-26 12:27:06,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 49 transitions, 369 flow [2023-08-26 12:27:06,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 49 transitions, 340 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-26 12:27:06,627 INFO L231 Difference]: Finished difference. Result has 49 places, 37 transitions, 194 flow [2023-08-26 12:27:06,628 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=284, PETRI_DIFFERENCE_MINUEND_FLOW=207, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=194, PETRI_PLACES=49, PETRI_TRANSITIONS=37} [2023-08-26 12:27:06,628 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -1 predicate places. [2023-08-26 12:27:06,628 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 37 transitions, 194 flow [2023-08-26 12:27:06,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 99.0) internal successors, (495), 5 states have internal predecessors, (495), 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 12:27:06,629 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 12:27:06,629 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 12:27:06,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-26 12:27:06,629 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 6 more)] === [2023-08-26 12:27:06,629 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 12:27:06,629 INFO L85 PathProgramCache]: Analyzing trace with hash 448093389, now seen corresponding path program 1 times [2023-08-26 12:27:06,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 12:27:06,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809943753] [2023-08-26 12:27:06,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 12:27:06,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 12:27:06,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 12:27:06,804 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 12:27:06,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 12:27:06,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809943753] [2023-08-26 12:27:06,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809943753] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 12:27:06,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 12:27:06,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-26 12:27:06,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756662912] [2023-08-26 12:27:06,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 12:27:06,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 12:27:06,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 12:27:06,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 12:27:06,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-26 12:27:06,806 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 284 [2023-08-26 12:27:06,806 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 37 transitions, 194 flow. Second operand has 6 states, 6 states have (on average 99.0) internal successors, (594), 6 states have internal predecessors, (594), 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 12:27:06,807 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 12:27:06,807 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 284 [2023-08-26 12:27:06,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 12:27:06,855 INFO L124 PetriNetUnfolderBase]: 19/105 cut-off events. [2023-08-26 12:27:06,856 INFO L125 PetriNetUnfolderBase]: For 124/124 co-relation queries the response was YES. [2023-08-26 12:27:06,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 367 conditions, 105 events. 19/105 cut-off events. For 124/124 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 255 event pairs, 2 based on Foata normal form. 12/117 useless extension candidates. Maximal degree in co-relation 359. Up to 70 conditions per place. [2023-08-26 12:27:06,856 INFO L140 encePairwiseOnDemand]: 280/284 looper letters, 33 selfloop transitions, 8 changer transitions 0/41 dead transitions. [2023-08-26 12:27:06,856 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 41 transitions, 297 flow [2023-08-26 12:27:06,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 12:27:06,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 12:27:06,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 414 transitions. [2023-08-26 12:27:06,858 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3644366197183099 [2023-08-26 12:27:06,858 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 414 transitions. [2023-08-26 12:27:06,858 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 414 transitions. [2023-08-26 12:27:06,858 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 12:27:06,858 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 414 transitions. [2023-08-26 12:27:06,859 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 103.5) internal successors, (414), 4 states have internal predecessors, (414), 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 12:27:06,860 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 284.0) internal successors, (1420), 5 states have internal predecessors, (1420), 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 12:27:06,860 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 284.0) internal successors, (1420), 5 states have internal predecessors, (1420), 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 12:27:06,860 INFO L175 Difference]: Start difference. First operand has 49 places, 37 transitions, 194 flow. Second operand 4 states and 414 transitions. [2023-08-26 12:27:06,860 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 41 transitions, 297 flow [2023-08-26 12:27:06,861 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 41 transitions, 281 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-26 12:27:06,862 INFO L231 Difference]: Finished difference. Result has 45 places, 36 transitions, 190 flow [2023-08-26 12:27:06,862 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=284, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=190, PETRI_PLACES=45, PETRI_TRANSITIONS=36} [2023-08-26 12:27:06,862 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -5 predicate places. [2023-08-26 12:27:06,862 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 36 transitions, 190 flow [2023-08-26 12:27:06,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 99.0) internal successors, (594), 6 states have internal predecessors, (594), 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 12:27:06,862 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 12:27:06,863 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 12:27:06,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-26 12:27:06,863 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 6 more)] === [2023-08-26 12:27:06,863 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 12:27:06,863 INFO L85 PathProgramCache]: Analyzing trace with hash 603777013, now seen corresponding path program 1 times [2023-08-26 12:27:06,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 12:27:06,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536911442] [2023-08-26 12:27:06,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 12:27:06,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 12:27:06,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 12:27:06,961 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 12:27:06,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 12:27:06,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536911442] [2023-08-26 12:27:06,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536911442] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 12:27:06,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 12:27:06,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 12:27:06,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82113674] [2023-08-26 12:27:06,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 12:27:06,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 12:27:06,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 12:27:06,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 12:27:06,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-26 12:27:06,963 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 284 [2023-08-26 12:27:06,963 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 36 transitions, 190 flow. Second operand has 4 states, 4 states have (on average 137.0) internal successors, (548), 4 states have internal predecessors, (548), 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 12:27:06,963 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 12:27:06,963 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 284 [2023-08-26 12:27:06,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 12:27:06,994 INFO L124 PetriNetUnfolderBase]: 19/103 cut-off events. [2023-08-26 12:27:06,995 INFO L125 PetriNetUnfolderBase]: For 120/120 co-relation queries the response was YES. [2023-08-26 12:27:06,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 348 conditions, 103 events. 19/103 cut-off events. For 120/120 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 253 event pairs, 8 based on Foata normal form. 2/105 useless extension candidates. Maximal degree in co-relation 340. Up to 77 conditions per place. [2023-08-26 12:27:06,995 INFO L140 encePairwiseOnDemand]: 280/284 looper letters, 0 selfloop transitions, 0 changer transitions 40/40 dead transitions. [2023-08-26 12:27:06,995 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 40 transitions, 281 flow [2023-08-26 12:27:06,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 12:27:06,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 12:27:06,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 552 transitions. [2023-08-26 12:27:06,997 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4859154929577465 [2023-08-26 12:27:06,997 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 552 transitions. [2023-08-26 12:27:06,997 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 552 transitions. [2023-08-26 12:27:06,997 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 12:27:06,997 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 552 transitions. [2023-08-26 12:27:06,998 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 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 12:27:06,999 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 284.0) internal successors, (1420), 5 states have internal predecessors, (1420), 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 12:27:06,999 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 284.0) internal successors, (1420), 5 states have internal predecessors, (1420), 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 12:27:06,999 INFO L175 Difference]: Start difference. First operand has 45 places, 36 transitions, 190 flow. Second operand 4 states and 552 transitions. [2023-08-26 12:27:06,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 40 transitions, 281 flow [2023-08-26 12:27:07,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 40 transitions, 271 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-26 12:27:07,000 INFO L231 Difference]: Finished difference. Result has 44 places, 0 transitions, 0 flow [2023-08-26 12:27:07,001 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=284, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=44, PETRI_TRANSITIONS=0} [2023-08-26 12:27:07,001 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -6 predicate places. [2023-08-26 12:27:07,001 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 0 transitions, 0 flow [2023-08-26 12:27:07,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 137.0) internal successors, (548), 4 states have internal predecessors, (548), 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 12:27:07,003 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 9 remaining) [2023-08-26 12:27:07,003 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 9 remaining) [2023-08-26 12:27:07,003 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (6 of 9 remaining) [2023-08-26 12:27:07,004 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONASSERT (5 of 9 remaining) [2023-08-26 12:27:07,004 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONASSERT (4 of 9 remaining) [2023-08-26 12:27:07,004 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONASSERT (3 of 9 remaining) [2023-08-26 12:27:07,004 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 9 remaining) [2023-08-26 12:27:07,004 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 9 remaining) [2023-08-26 12:27:07,004 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 9 remaining) [2023-08-26 12:27:07,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-26 12:27:07,004 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 12:27:07,006 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-26 12:27:07,006 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-26 12:27:07,008 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 12:27:07 BasicIcfg [2023-08-26 12:27:07,008 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-26 12:27:07,009 INFO L158 Benchmark]: Toolchain (without parser) took 6098.61ms. Allocated memory was 335.5MB in the beginning and 490.7MB in the end (delta: 155.2MB). Free memory was 310.9MB in the beginning and 361.4MB in the end (delta: -50.5MB). Peak memory consumption was 104.4MB. Max. memory is 16.0GB. [2023-08-26 12:27:07,009 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 335.5MB. Free memory is still 312.6MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-26 12:27:07,009 INFO L158 Benchmark]: CACSL2BoogieTranslator took 319.30ms. Allocated memory is still 335.5MB. Free memory was 310.7MB in the beginning and 290.6MB in the end (delta: 20.1MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. [2023-08-26 12:27:07,009 INFO L158 Benchmark]: Boogie Procedure Inliner took 51.49ms. Allocated memory is still 335.5MB. Free memory was 290.6MB in the beginning and 288.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-26 12:27:07,009 INFO L158 Benchmark]: Boogie Preprocessor took 39.12ms. Allocated memory is still 335.5MB. Free memory was 288.5MB in the beginning and 286.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-26 12:27:07,009 INFO L158 Benchmark]: RCFGBuilder took 413.31ms. Allocated memory is still 335.5MB. Free memory was 286.8MB in the beginning and 269.6MB in the end (delta: 17.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. [2023-08-26 12:27:07,010 INFO L158 Benchmark]: TraceAbstraction took 5270.96ms. Allocated memory was 335.5MB in the beginning and 490.7MB in the end (delta: 155.2MB). Free memory was 268.8MB in the beginning and 361.4MB in the end (delta: -92.7MB). Peak memory consumption was 62.5MB. Max. memory is 16.0GB. [2023-08-26 12:27:07,010 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 335.5MB. Free memory is still 312.6MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 319.30ms. Allocated memory is still 335.5MB. Free memory was 310.7MB in the beginning and 290.6MB in the end (delta: 20.1MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 51.49ms. Allocated memory is still 335.5MB. Free memory was 290.6MB in the beginning and 288.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 39.12ms. Allocated memory is still 335.5MB. Free memory was 288.5MB in the beginning and 286.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 413.31ms. Allocated memory is still 335.5MB. Free memory was 286.8MB in the beginning and 269.6MB in the end (delta: 17.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. * TraceAbstraction took 5270.96ms. Allocated memory was 335.5MB in the beginning and 490.7MB in the end (delta: 155.2MB). Free memory was 268.8MB in the beginning and 361.4MB in the end (delta: -92.7MB). Peak memory consumption was 62.5MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 231]: Unsoundness Warning unspecified type, defaulting to int C: short [231] - GenericResultAtLocation [Line: 232]: Unsoundness Warning unspecified type, defaulting to int C: short [232] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.0s, 138 PlacesBefore, 50 PlacesAfterwards, 142 TransitionsBefore, 52 TransitionsAfterwards, 4620 CoEnabledTransitionPairs, 7 FixpointIterations, 45 TrivialSequentialCompositions, 73 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 13 ConcurrentYvCompositions, 2 ChoiceCompositions, 133 TotalNumberOfCompositions, 15942 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 4412, independent: 3876, independent conditional: 0, independent unconditional: 3876, dependent: 536, dependent conditional: 0, dependent unconditional: 536, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 2371, independent: 2301, independent conditional: 0, independent unconditional: 2301, dependent: 70, dependent conditional: 0, dependent unconditional: 70, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 4412, independent: 1575, independent conditional: 0, independent unconditional: 1575, dependent: 466, dependent conditional: 0, dependent unconditional: 466, unknown: 2371, unknown conditional: 0, unknown unconditional: 2371] , Statistics on independence cache: Total cache size (in pairs): 136, Positive cache size: 94, Positive conditional cache size: 0, Positive unconditional cache size: 94, Negative cache size: 42, Negative conditional cache size: 0, Negative unconditional cache size: 42, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - 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: 18]: assertion always holds For all program executions holds that assertion always holds at this location - PositiveResult [Line: 18]: assertion always holds For all program executions holds that assertion always holds at this location - PositiveResult [Line: 18]: assertion always holds For all program executions holds that assertion always holds at this location - PositiveResult [Line: 18]: 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 - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 179 locations, 9 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: 12, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 221 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 221 mSDsluCounter, 6 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 77 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 753 IncrementalHoareTripleChecker+Invalid, 830 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 77 mSolverCounterUnsat, 6 mSDtfsCounter, 753 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 40 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=236occurred in iteration=9, InterpolantAutomatonStates: 40, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 177 NumberOfCodeBlocks, 177 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 165 ConstructedInterpolants, 0 QuantifiedInterpolants, 947 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 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 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-26 12:27:07,027 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...