/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.order.of.the.error.locations.to.be.checked PROGRAM_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --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_01-priv_nr_true.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-26 18:36:55,858 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-26 18:36:55,945 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 18:36:55,951 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-26 18:36:55,951 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-26 18:36:55,982 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-26 18:36:55,983 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-26 18:36:55,987 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-26 18:36:55,988 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-26 18:36:55,991 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-26 18:36:55,992 INFO L153 SettingsManager]: * Use SBE=true [2023-08-26 18:36:55,992 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-26 18:36:55,992 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-26 18:36:55,994 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-26 18:36:55,994 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-26 18:36:55,994 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-26 18:36:55,994 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-26 18:36:55,994 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-26 18:36:55,995 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-26 18:36:55,995 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-26 18:36:55,995 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-26 18:36:55,996 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-26 18:36:55,996 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-26 18:36:55,997 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-26 18:36:55,997 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-26 18:36:55,997 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-26 18:36:55,997 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-26 18:36:55,998 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 18:36:55,998 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-26 18:36:55,998 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-26 18:36:55,999 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-26 18:36:55,999 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-26 18:36:56,000 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-26 18:36:56,000 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-26 18:36:56,000 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-26 18:36:56,000 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer base address is valid at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer to allocated memory at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check array bounds for arrays that are off heap -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check if freed pointer was valid -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Adapt memory model on pointer casts if necessary -> true [2023-08-26 18:36:56,315 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-26 18:36:56,337 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-26 18:36:56,339 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-26 18:36:56,339 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-26 18:36:56,340 INFO L274 PluginConnector]: CDTParser initialized [2023-08-26 18:36:56,341 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/13-privatized_01-priv_nr_true.i [2023-08-26 18:36:57,517 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-26 18:36:57,747 INFO L384 CDTParser]: Found 1 translation units. [2023-08-26 18:36:57,748 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_01-priv_nr_true.i [2023-08-26 18:36:57,759 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6cdbb3f57/2956e896bd3849ea80dde6f42831e452/FLAG381b77990 [2023-08-26 18:36:57,772 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6cdbb3f57/2956e896bd3849ea80dde6f42831e452 [2023-08-26 18:36:57,774 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-26 18:36:57,775 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-26 18:36:57,776 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-26 18:36:57,776 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-26 18:36:57,778 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-26 18:36:57,779 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 06:36:57" (1/1) ... [2023-08-26 18:36:57,780 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4005e704 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:36:57, skipping insertion in model container [2023-08-26 18:36:57,780 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 06:36:57" (1/1) ... [2023-08-26 18:36:57,817 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-26 18:36:58,082 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 18:36:58,097 INFO L201 MainTranslator]: Completed pre-run [2023-08-26 18:36:58,123 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [231] [2023-08-26 18:36:58,125 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [232] [2023-08-26 18:36:58,143 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 18:36:58,184 INFO L206 MainTranslator]: Completed translation [2023-08-26 18:36:58,185 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:36:58 WrapperNode [2023-08-26 18:36:58,185 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-26 18:36:58,186 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-26 18:36:58,186 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-26 18:36:58,186 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-26 18:36:58,192 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:36:58" (1/1) ... [2023-08-26 18:36:58,221 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:36:58" (1/1) ... [2023-08-26 18:36:58,246 INFO L138 Inliner]: procedures = 162, calls = 25, calls flagged for inlining = 7, calls inlined = 10, statements flattened = 96 [2023-08-26 18:36:58,246 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-26 18:36:58,247 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-26 18:36:58,248 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-26 18:36:58,248 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-26 18:36:58,255 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:36:58" (1/1) ... [2023-08-26 18:36:58,256 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:36:58" (1/1) ... [2023-08-26 18:36:58,262 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:36:58" (1/1) ... [2023-08-26 18:36:58,263 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:36:58" (1/1) ... [2023-08-26 18:36:58,278 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:36:58" (1/1) ... [2023-08-26 18:36:58,279 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:36:58" (1/1) ... [2023-08-26 18:36:58,281 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:36:58" (1/1) ... [2023-08-26 18:36:58,281 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:36:58" (1/1) ... [2023-08-26 18:36:58,283 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-26 18:36:58,284 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-26 18:36:58,284 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-26 18:36:58,284 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-26 18:36:58,285 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:36:58" (1/1) ... [2023-08-26 18:36:58,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 18:36:58,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 18:36:58,318 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 18:36:58,344 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 18:36:58,360 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-26 18:36:58,360 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-26 18:36:58,360 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-26 18:36:58,361 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-26 18:36:58,361 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-26 18:36:58,361 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-26 18:36:58,361 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-26 18:36:58,361 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-26 18:36:58,361 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-26 18:36:58,361 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-26 18:36:58,362 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-26 18:36:58,363 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 18:36:58,499 INFO L236 CfgBuilder]: Building ICFG [2023-08-26 18:36:58,501 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-26 18:36:58,639 INFO L277 CfgBuilder]: Performing block encoding [2023-08-26 18:36:58,645 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-26 18:36:58,645 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-26 18:36:58,647 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 06:36:58 BoogieIcfgContainer [2023-08-26 18:36:58,647 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-26 18:36:58,649 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-26 18:36:58,650 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-26 18:36:58,652 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-26 18:36:58,652 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 06:36:57" (1/3) ... [2023-08-26 18:36:58,653 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@126c6853 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 06:36:58, skipping insertion in model container [2023-08-26 18:36:58,653 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:36:58" (2/3) ... [2023-08-26 18:36:58,653 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@126c6853 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 06:36:58, skipping insertion in model container [2023-08-26 18:36:58,654 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 06:36:58" (3/3) ... [2023-08-26 18:36:58,655 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_01-priv_nr_true.i [2023-08-26 18:36:58,672 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-26 18:36:58,672 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-08-26 18:36:58,672 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-26 18:36:58,716 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-26 18:36:58,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 109 places, 113 transitions, 234 flow [2023-08-26 18:36:58,821 INFO L124 PetriNetUnfolderBase]: 8/112 cut-off events. [2023-08-26 18:36:58,821 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-26 18:36:58,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117 conditions, 112 events. 8/112 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 161 event pairs, 0 based on Foata normal form. 0/96 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2023-08-26 18:36:58,826 INFO L82 GeneralOperation]: Start removeDead. Operand has 109 places, 113 transitions, 234 flow [2023-08-26 18:36:58,830 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 101 places, 105 transitions, 213 flow [2023-08-26 18:36:58,833 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 18:36:58,841 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 101 places, 105 transitions, 213 flow [2023-08-26 18:36:58,843 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 101 places, 105 transitions, 213 flow [2023-08-26 18:36:58,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 101 places, 105 transitions, 213 flow [2023-08-26 18:36:58,865 INFO L124 PetriNetUnfolderBase]: 8/105 cut-off events. [2023-08-26 18:36:58,865 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 18:36:58,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109 conditions, 105 events. 8/105 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 161 event pairs, 0 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2023-08-26 18:36:58,867 INFO L119 LiptonReduction]: Number of co-enabled transitions 1768 [2023-08-26 18:37:02,094 INFO L134 LiptonReduction]: Checked pairs total: 4931 [2023-08-26 18:37:02,094 INFO L136 LiptonReduction]: Total number of compositions: 123 [2023-08-26 18:37:02,104 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 18:37:02,110 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;@501c3877, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 18:37:02,110 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2023-08-26 18:37:02,111 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 18:37:02,111 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-08-26 18:37:02,111 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 18:37:02,111 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 18:37:02,112 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-26 18:37:02,112 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-26 18:37:02,116 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 18:37:02,116 INFO L85 PathProgramCache]: Analyzing trace with hash 447, now seen corresponding path program 1 times [2023-08-26 18:37:02,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 18:37:02,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129920108] [2023-08-26 18:37:02,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 18:37:02,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 18:37:02,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 18:37:02,210 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 18:37:02,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 18:37:02,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129920108] [2023-08-26 18:37:02,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129920108] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 18:37:02,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 18:37:02,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-26 18:37:02,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184005461] [2023-08-26 18:37:02,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 18:37:02,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-26 18:37:02,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 18:37:02,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-26 18:37:02,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-26 18:37:02,242 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 236 [2023-08-26 18:37:02,244 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 29 transitions, 61 flow. Second operand has 2 states, 2 states have (on average 99.5) internal successors, (199), 2 states have internal predecessors, (199), 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 18:37:02,244 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 18:37:02,244 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 236 [2023-08-26 18:37:02,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 18:37:02,311 INFO L124 PetriNetUnfolderBase]: 80/182 cut-off events. [2023-08-26 18:37:02,311 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 18:37:02,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 367 conditions, 182 events. 80/182 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 648 event pairs, 80 based on Foata normal form. 9/131 useless extension candidates. Maximal degree in co-relation 358. Up to 181 conditions per place. [2023-08-26 18:37:02,314 INFO L140 encePairwiseOnDemand]: 230/236 looper letters, 20 selfloop transitions, 0 changer transitions 0/21 dead transitions. [2023-08-26 18:37:02,314 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 21 transitions, 85 flow [2023-08-26 18:37:02,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-26 18:37:02,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-26 18:37:02,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 224 transitions. [2023-08-26 18:37:02,325 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4745762711864407 [2023-08-26 18:37:02,326 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 224 transitions. [2023-08-26 18:37:02,326 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 224 transitions. [2023-08-26 18:37:02,327 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 18:37:02,329 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 224 transitions. [2023-08-26 18:37:02,332 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 112.0) internal successors, (224), 2 states have internal predecessors, (224), 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 18:37:02,341 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 236.0) internal successors, (708), 3 states have internal predecessors, (708), 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 18:37:02,342 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 236.0) internal successors, (708), 3 states have internal predecessors, (708), 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 18:37:02,343 INFO L175 Difference]: Start difference. First operand has 30 places, 29 transitions, 61 flow. Second operand 2 states and 224 transitions. [2023-08-26 18:37:02,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 21 transitions, 85 flow [2023-08-26 18:37:02,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 21 transitions, 84 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 18:37:02,348 INFO L231 Difference]: Finished difference. Result has 25 places, 21 transitions, 44 flow [2023-08-26 18:37:02,349 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=236, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=44, PETRI_PLACES=25, PETRI_TRANSITIONS=21} [2023-08-26 18:37:02,352 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, -5 predicate places. [2023-08-26 18:37:02,352 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 21 transitions, 44 flow [2023-08-26 18:37:02,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 99.5) internal successors, (199), 2 states have internal predecessors, (199), 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 18:37:02,352 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 18:37:02,352 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-26 18:37:02,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-26 18:37:02,353 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-26 18:37:02,353 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 18:37:02,353 INFO L85 PathProgramCache]: Analyzing trace with hash 13703174, now seen corresponding path program 1 times [2023-08-26 18:37:02,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 18:37:02,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651598644] [2023-08-26 18:37:02,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 18:37:02,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 18:37:02,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 18:37:02,572 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 18:37:02,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 18:37:02,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651598644] [2023-08-26 18:37:02,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651598644] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 18:37:02,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 18:37:02,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 18:37:02,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63437410] [2023-08-26 18:37:02,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 18:37:02,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 18:37:02,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 18:37:02,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 18:37:02,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 18:37:02,576 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 236 [2023-08-26 18:37:02,576 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 21 transitions, 44 flow. Second operand has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 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 18:37:02,576 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 18:37:02,576 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 236 [2023-08-26 18:37:02,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 18:37:02,632 INFO L124 PetriNetUnfolderBase]: 85/191 cut-off events. [2023-08-26 18:37:02,633 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 18:37:02,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 387 conditions, 191 events. 85/191 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 693 event pairs, 48 based on Foata normal form. 0/134 useless extension candidates. Maximal degree in co-relation 384. Up to 178 conditions per place. [2023-08-26 18:37:02,634 INFO L140 encePairwiseOnDemand]: 232/236 looper letters, 24 selfloop transitions, 3 changer transitions 0/27 dead transitions. [2023-08-26 18:37:02,634 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 27 transitions, 110 flow [2023-08-26 18:37:02,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 18:37:02,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 18:37:02,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 292 transitions. [2023-08-26 18:37:02,637 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4124293785310734 [2023-08-26 18:37:02,637 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 292 transitions. [2023-08-26 18:37:02,637 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 292 transitions. [2023-08-26 18:37:02,638 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 18:37:02,638 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 292 transitions. [2023-08-26 18:37:02,639 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 97.33333333333333) internal successors, (292), 3 states have internal predecessors, (292), 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 18:37:02,641 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 236.0) internal successors, (944), 4 states have internal predecessors, (944), 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 18:37:02,642 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 236.0) internal successors, (944), 4 states have internal predecessors, (944), 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 18:37:02,642 INFO L175 Difference]: Start difference. First operand has 25 places, 21 transitions, 44 flow. Second operand 3 states and 292 transitions. [2023-08-26 18:37:02,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 27 transitions, 110 flow [2023-08-26 18:37:02,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 27 transitions, 110 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 18:37:02,643 INFO L231 Difference]: Finished difference. Result has 28 places, 23 transitions, 63 flow [2023-08-26 18:37:02,643 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=236, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=63, PETRI_PLACES=28, PETRI_TRANSITIONS=23} [2023-08-26 18:37:02,643 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, -2 predicate places. [2023-08-26 18:37:02,644 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 23 transitions, 63 flow [2023-08-26 18:37:02,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 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 18:37:02,644 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 18:37:02,644 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-26 18:37:02,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-26 18:37:02,645 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-26 18:37:02,645 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 18:37:02,645 INFO L85 PathProgramCache]: Analyzing trace with hash 283878212, now seen corresponding path program 1 times [2023-08-26 18:37:02,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 18:37:02,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435113573] [2023-08-26 18:37:02,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 18:37:02,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 18:37:02,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 18:37:02,812 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 18:37:02,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 18:37:02,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435113573] [2023-08-26 18:37:02,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435113573] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 18:37:02,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 18:37:02,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 18:37:02,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426797987] [2023-08-26 18:37:02,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 18:37:02,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 18:37:02,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 18:37:02,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 18:37:02,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-26 18:37:02,821 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 236 [2023-08-26 18:37:02,822 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 23 transitions, 63 flow. Second operand has 5 states, 5 states have (on average 87.2) internal successors, (436), 5 states have internal predecessors, (436), 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 18:37:02,822 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 18:37:02,822 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 236 [2023-08-26 18:37:02,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 18:37:02,947 INFO L124 PetriNetUnfolderBase]: 93/211 cut-off events. [2023-08-26 18:37:02,947 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2023-08-26 18:37:02,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 466 conditions, 211 events. 93/211 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 832 event pairs, 32 based on Foata normal form. 0/167 useless extension candidates. Maximal degree in co-relation 461. Up to 149 conditions per place. [2023-08-26 18:37:02,950 INFO L140 encePairwiseOnDemand]: 228/236 looper letters, 37 selfloop transitions, 9 changer transitions 0/46 dead transitions. [2023-08-26 18:37:02,950 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 46 transitions, 210 flow [2023-08-26 18:37:02,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 18:37:02,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 18:37:02,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 564 transitions. [2023-08-26 18:37:02,953 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3983050847457627 [2023-08-26 18:37:02,953 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 564 transitions. [2023-08-26 18:37:02,953 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 564 transitions. [2023-08-26 18:37:02,954 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 18:37:02,954 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 564 transitions. [2023-08-26 18:37:02,956 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 94.0) internal successors, (564), 6 states have internal predecessors, (564), 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 18:37:02,960 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 236.0) internal successors, (1652), 7 states have internal predecessors, (1652), 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 18:37:02,961 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 236.0) internal successors, (1652), 7 states have internal predecessors, (1652), 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 18:37:02,961 INFO L175 Difference]: Start difference. First operand has 28 places, 23 transitions, 63 flow. Second operand 6 states and 564 transitions. [2023-08-26 18:37:02,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 46 transitions, 210 flow [2023-08-26 18:37:02,962 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 46 transitions, 206 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 18:37:02,964 INFO L231 Difference]: Finished difference. Result has 35 places, 29 transitions, 120 flow [2023-08-26 18:37:02,964 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=236, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=120, PETRI_PLACES=35, PETRI_TRANSITIONS=29} [2023-08-26 18:37:02,965 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 5 predicate places. [2023-08-26 18:37:02,965 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 29 transitions, 120 flow [2023-08-26 18:37:02,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 87.2) internal successors, (436), 5 states have internal predecessors, (436), 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 18:37:02,966 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 18:37:02,966 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-26 18:37:02,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-26 18:37:02,967 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-26 18:37:02,967 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 18:37:02,967 INFO L85 PathProgramCache]: Analyzing trace with hash 208853312, now seen corresponding path program 1 times [2023-08-26 18:37:02,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 18:37:02,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376421913] [2023-08-26 18:37:02,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 18:37:02,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 18:37:02,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 18:37:03,046 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 18:37:03,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 18:37:03,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376421913] [2023-08-26 18:37:03,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376421913] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 18:37:03,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 18:37:03,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 18:37:03,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873331644] [2023-08-26 18:37:03,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 18:37:03,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 18:37:03,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 18:37:03,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 18:37:03,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 18:37:03,050 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 236 [2023-08-26 18:37:03,051 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 29 transitions, 120 flow. Second operand has 3 states, 3 states have (on average 91.0) internal successors, (273), 3 states have internal predecessors, (273), 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 18:37:03,051 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 18:37:03,051 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 236 [2023-08-26 18:37:03,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 18:37:03,081 INFO L124 PetriNetUnfolderBase]: 3/53 cut-off events. [2023-08-26 18:37:03,082 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2023-08-26 18:37:03,082 INFO L83 FinitePrefix]: Finished finitePrefix Result has 144 conditions, 53 events. 3/53 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 149 event pairs, 0 based on Foata normal form. 11/59 useless extension candidates. Maximal degree in co-relation 136. Up to 39 conditions per place. [2023-08-26 18:37:03,082 INFO L140 encePairwiseOnDemand]: 230/236 looper letters, 16 selfloop transitions, 6 changer transitions 1/25 dead transitions. [2023-08-26 18:37:03,083 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 25 transitions, 139 flow [2023-08-26 18:37:03,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 18:37:03,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 18:37:03,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 289 transitions. [2023-08-26 18:37:03,086 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4081920903954802 [2023-08-26 18:37:03,086 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 289 transitions. [2023-08-26 18:37:03,086 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 289 transitions. [2023-08-26 18:37:03,086 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 18:37:03,086 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 289 transitions. [2023-08-26 18:37:03,087 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 96.33333333333333) internal successors, (289), 3 states have internal predecessors, (289), 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 18:37:03,088 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 236.0) internal successors, (944), 4 states have internal predecessors, (944), 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 18:37:03,089 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 236.0) internal successors, (944), 4 states have internal predecessors, (944), 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 18:37:03,089 INFO L175 Difference]: Start difference. First operand has 35 places, 29 transitions, 120 flow. Second operand 3 states and 289 transitions. [2023-08-26 18:37:03,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 25 transitions, 139 flow [2023-08-26 18:37:03,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 25 transitions, 127 flow, removed 3 selfloop flow, removed 3 redundant places. [2023-08-26 18:37:03,091 INFO L231 Difference]: Finished difference. Result has 33 places, 24 transitions, 89 flow [2023-08-26 18:37:03,092 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=236, PETRI_DIFFERENCE_MINUEND_FLOW=81, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=89, PETRI_PLACES=33, PETRI_TRANSITIONS=24} [2023-08-26 18:37:03,093 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 3 predicate places. [2023-08-26 18:37:03,093 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 24 transitions, 89 flow [2023-08-26 18:37:03,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 91.0) internal successors, (273), 3 states have internal predecessors, (273), 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 18:37:03,093 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 18:37:03,094 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-26 18:37:03,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-26 18:37:03,094 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr1ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-26 18:37:03,094 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 18:37:03,094 INFO L85 PathProgramCache]: Analyzing trace with hash 208590083, now seen corresponding path program 1 times [2023-08-26 18:37:03,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 18:37:03,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644235596] [2023-08-26 18:37:03,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 18:37:03,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 18:37:03,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 18:37:03,150 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 18:37:03,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 18:37:03,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644235596] [2023-08-26 18:37:03,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644235596] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 18:37:03,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 18:37:03,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 18:37:03,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516267811] [2023-08-26 18:37:03,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 18:37:03,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 18:37:03,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 18:37:03,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 18:37:03,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-26 18:37:03,153 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 236 [2023-08-26 18:37:03,154 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 24 transitions, 89 flow. Second operand has 4 states, 4 states have (on average 86.75) internal successors, (347), 4 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 18:37:03,154 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 18:37:03,154 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 236 [2023-08-26 18:37:03,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 18:37:03,209 INFO L124 PetriNetUnfolderBase]: 3/48 cut-off events. [2023-08-26 18:37:03,209 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 18:37:03,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139 conditions, 48 events. 3/48 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 117 event pairs, 0 based on Foata normal form. 0/44 useless extension candidates. Maximal degree in co-relation 132. Up to 23 conditions per place. [2023-08-26 18:37:03,210 INFO L140 encePairwiseOnDemand]: 233/236 looper letters, 25 selfloop transitions, 3 changer transitions 1/29 dead transitions. [2023-08-26 18:37:03,210 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 29 transitions, 165 flow [2023-08-26 18:37:03,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 18:37:03,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 18:37:03,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 369 transitions. [2023-08-26 18:37:03,214 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3908898305084746 [2023-08-26 18:37:03,214 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 369 transitions. [2023-08-26 18:37:03,214 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 369 transitions. [2023-08-26 18:37:03,214 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 18:37:03,214 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 369 transitions. [2023-08-26 18:37:03,215 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 92.25) internal successors, (369), 4 states have internal predecessors, (369), 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 18:37:03,217 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 236.0) internal successors, (1180), 5 states have internal predecessors, (1180), 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 18:37:03,217 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 236.0) internal successors, (1180), 5 states have internal predecessors, (1180), 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 18:37:03,218 INFO L175 Difference]: Start difference. First operand has 33 places, 24 transitions, 89 flow. Second operand 4 states and 369 transitions. [2023-08-26 18:37:03,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 29 transitions, 165 flow [2023-08-26 18:37:03,218 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 29 transitions, 155 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 18:37:03,219 INFO L231 Difference]: Finished difference. Result has 33 places, 23 transitions, 87 flow [2023-08-26 18:37:03,219 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=236, PETRI_DIFFERENCE_MINUEND_FLOW=81, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=87, PETRI_PLACES=33, PETRI_TRANSITIONS=23} [2023-08-26 18:37:03,220 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 3 predicate places. [2023-08-26 18:37:03,220 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 23 transitions, 87 flow [2023-08-26 18:37:03,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 86.75) internal successors, (347), 4 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 18:37:03,220 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 18:37:03,221 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 18:37:03,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-26 18:37:03,221 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-26 18:37:03,221 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 18:37:03,221 INFO L85 PathProgramCache]: Analyzing trace with hash 224239640, now seen corresponding path program 1 times [2023-08-26 18:37:03,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 18:37:03,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596012652] [2023-08-26 18:37:03,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 18:37:03,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 18:37:03,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 18:37:03,281 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 18:37:03,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 18:37:03,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596012652] [2023-08-26 18:37:03,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596012652] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 18:37:03,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 18:37:03,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 18:37:03,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726291323] [2023-08-26 18:37:03,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 18:37:03,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 18:37:03,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 18:37:03,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 18:37:03,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 18:37:03,288 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 236 [2023-08-26 18:37:03,289 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 23 transitions, 87 flow. Second operand has 3 states, 3 states have (on average 87.66666666666667) internal successors, (263), 3 states have internal predecessors, (263), 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 18:37:03,289 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 18:37:03,289 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 236 [2023-08-26 18:37:03,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 18:37:03,311 INFO L124 PetriNetUnfolderBase]: 2/39 cut-off events. [2023-08-26 18:37:03,311 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-08-26 18:37:03,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115 conditions, 39 events. 2/39 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 71 event pairs, 0 based on Foata normal form. 0/37 useless extension candidates. Maximal degree in co-relation 107. Up to 37 conditions per place. [2023-08-26 18:37:03,311 INFO L140 encePairwiseOnDemand]: 234/236 looper letters, 19 selfloop transitions, 1 changer transitions 0/22 dead transitions. [2023-08-26 18:37:03,312 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 22 transitions, 124 flow [2023-08-26 18:37:03,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 18:37:03,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 18:37:03,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 273 transitions. [2023-08-26 18:37:03,313 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3855932203389831 [2023-08-26 18:37:03,313 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 273 transitions. [2023-08-26 18:37:03,314 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 273 transitions. [2023-08-26 18:37:03,314 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 18:37:03,314 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 273 transitions. [2023-08-26 18:37:03,315 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 91.0) internal successors, (273), 3 states have internal predecessors, (273), 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 18:37:03,316 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 236.0) internal successors, (944), 4 states have internal predecessors, (944), 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 18:37:03,316 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 236.0) internal successors, (944), 4 states have internal predecessors, (944), 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 18:37:03,316 INFO L175 Difference]: Start difference. First operand has 33 places, 23 transitions, 87 flow. Second operand 3 states and 273 transitions. [2023-08-26 18:37:03,317 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 22 transitions, 124 flow [2023-08-26 18:37:03,317 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 22 transitions, 119 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 18:37:03,318 INFO L231 Difference]: Finished difference. Result has 32 places, 22 transitions, 81 flow [2023-08-26 18:37:03,318 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=236, PETRI_DIFFERENCE_MINUEND_FLOW=79, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=81, PETRI_PLACES=32, PETRI_TRANSITIONS=22} [2023-08-26 18:37:03,319 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 2 predicate places. [2023-08-26 18:37:03,319 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 22 transitions, 81 flow [2023-08-26 18:37:03,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 87.66666666666667) internal successors, (263), 3 states have internal predecessors, (263), 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 18:37:03,319 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 18:37:03,319 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 18:37:03,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-26 18:37:03,319 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-26 18:37:03,320 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 18:37:03,320 INFO L85 PathProgramCache]: Analyzing trace with hash 224239641, now seen corresponding path program 1 times [2023-08-26 18:37:03,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 18:37:03,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363055129] [2023-08-26 18:37:03,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 18:37:03,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 18:37:03,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 18:37:03,367 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 18:37:03,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 18:37:03,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363055129] [2023-08-26 18:37:03,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363055129] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 18:37:03,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 18:37:03,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 18:37:03,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710597618] [2023-08-26 18:37:03,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 18:37:03,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 18:37:03,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 18:37:03,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 18:37:03,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 18:37:03,369 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 236 [2023-08-26 18:37:03,369 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 22 transitions, 81 flow. Second operand has 3 states, 3 states have (on average 88.66666666666667) internal successors, (266), 3 states have internal predecessors, (266), 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 18:37:03,370 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 18:37:03,370 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 236 [2023-08-26 18:37:03,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 18:37:03,394 INFO L124 PetriNetUnfolderBase]: 1/30 cut-off events. [2023-08-26 18:37:03,394 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-26 18:37:03,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 30 events. 1/30 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 33 event pairs, 0 based on Foata normal form. 0/30 useless extension candidates. Maximal degree in co-relation 81. Up to 28 conditions per place. [2023-08-26 18:37:03,396 INFO L140 encePairwiseOnDemand]: 234/236 looper letters, 16 selfloop transitions, 1 changer transitions 2/21 dead transitions. [2023-08-26 18:37:03,396 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 21 transitions, 116 flow [2023-08-26 18:37:03,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 18:37:03,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 18:37:03,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 275 transitions. [2023-08-26 18:37:03,397 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3884180790960452 [2023-08-26 18:37:03,397 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 275 transitions. [2023-08-26 18:37:03,397 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 275 transitions. [2023-08-26 18:37:03,397 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 18:37:03,397 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 275 transitions. [2023-08-26 18:37:03,398 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 91.66666666666667) internal successors, (275), 3 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 18:37:03,399 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 236.0) internal successors, (944), 4 states have internal predecessors, (944), 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 18:37:03,400 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 236.0) internal successors, (944), 4 states have internal predecessors, (944), 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 18:37:03,400 INFO L175 Difference]: Start difference. First operand has 32 places, 22 transitions, 81 flow. Second operand 3 states and 275 transitions. [2023-08-26 18:37:03,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 21 transitions, 116 flow [2023-08-26 18:37:03,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 21 transitions, 115 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 18:37:03,402 INFO L231 Difference]: Finished difference. Result has 32 places, 19 transitions, 71 flow [2023-08-26 18:37:03,402 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=236, PETRI_DIFFERENCE_MINUEND_FLOW=77, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=71, PETRI_PLACES=32, PETRI_TRANSITIONS=19} [2023-08-26 18:37:03,403 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 2 predicate places. [2023-08-26 18:37:03,404 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 19 transitions, 71 flow [2023-08-26 18:37:03,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 88.66666666666667) internal successors, (266), 3 states have internal predecessors, (266), 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 18:37:03,404 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 18:37:03,404 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 18:37:03,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-26 18:37:03,405 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-26 18:37:03,405 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 18:37:03,406 INFO L85 PathProgramCache]: Analyzing trace with hash 745940086, now seen corresponding path program 1 times [2023-08-26 18:37:03,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 18:37:03,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407157827] [2023-08-26 18:37:03,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 18:37:03,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 18:37:03,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 18:37:03,543 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 18:37:03,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 18:37:03,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407157827] [2023-08-26 18:37:03,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407157827] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 18:37:03,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 18:37:03,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-26 18:37:03,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137566037] [2023-08-26 18:37:03,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 18:37:03,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 18:37:03,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 18:37:03,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 18:37:03,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-08-26 18:37:03,545 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 236 [2023-08-26 18:37:03,546 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 19 transitions, 71 flow. Second operand has 6 states, 6 states have (on average 86.83333333333333) internal successors, (521), 6 states have internal predecessors, (521), 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 18:37:03,546 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 18:37:03,546 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 236 [2023-08-26 18:37:03,546 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 18:37:03,604 INFO L124 PetriNetUnfolderBase]: 0/23 cut-off events. [2023-08-26 18:37:03,605 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 18:37:03,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72 conditions, 23 events. 0/23 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 18 event pairs, 0 based on Foata normal form. 1/24 useless extension candidates. Maximal degree in co-relation 0. Up to 11 conditions per place. [2023-08-26 18:37:03,605 INFO L140 encePairwiseOnDemand]: 229/236 looper letters, 10 selfloop transitions, 2 changer transitions 9/21 dead transitions. [2023-08-26 18:37:03,605 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 21 transitions, 116 flow [2023-08-26 18:37:03,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 18:37:03,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 18:37:03,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 532 transitions. [2023-08-26 18:37:03,607 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3757062146892655 [2023-08-26 18:37:03,607 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 532 transitions. [2023-08-26 18:37:03,607 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 532 transitions. [2023-08-26 18:37:03,608 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 18:37:03,608 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 532 transitions. [2023-08-26 18:37:03,609 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 88.66666666666667) internal successors, (532), 6 states have internal predecessors, (532), 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 18:37:03,610 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 236.0) internal successors, (1652), 7 states have internal predecessors, (1652), 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 18:37:03,611 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 236.0) internal successors, (1652), 7 states have internal predecessors, (1652), 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 18:37:03,611 INFO L175 Difference]: Start difference. First operand has 32 places, 19 transitions, 71 flow. Second operand 6 states and 532 transitions. [2023-08-26 18:37:03,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 21 transitions, 116 flow [2023-08-26 18:37:03,612 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 21 transitions, 115 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 18:37:03,612 INFO L231 Difference]: Finished difference. Result has 35 places, 12 transitions, 48 flow [2023-08-26 18:37:03,612 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=236, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=48, PETRI_PLACES=35, PETRI_TRANSITIONS=12} [2023-08-26 18:37:03,613 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 5 predicate places. [2023-08-26 18:37:03,613 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 12 transitions, 48 flow [2023-08-26 18:37:03,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 86.83333333333333) internal successors, (521), 6 states have internal predecessors, (521), 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 18:37:03,613 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 18:37:03,613 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 18:37:03,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-26 18:37:03,614 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-26 18:37:03,614 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 18:37:03,614 INFO L85 PathProgramCache]: Analyzing trace with hash 941452162, now seen corresponding path program 1 times [2023-08-26 18:37:03,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 18:37:03,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094514449] [2023-08-26 18:37:03,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 18:37:03,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 18:37:03,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 18:37:03,744 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 18:37:03,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 18:37:03,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094514449] [2023-08-26 18:37:03,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094514449] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 18:37:03,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 18:37:03,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-26 18:37:03,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423727857] [2023-08-26 18:37:03,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 18:37:03,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-26 18:37:03,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 18:37:03,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-26 18:37:03,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-08-26 18:37:03,747 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 236 [2023-08-26 18:37:03,748 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 12 transitions, 48 flow. Second operand has 7 states, 7 states have (on average 83.71428571428571) internal successors, (586), 7 states have internal predecessors, (586), 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 18:37:03,748 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 18:37:03,748 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 236 [2023-08-26 18:37:03,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 18:37:03,799 INFO L124 PetriNetUnfolderBase]: 0/12 cut-off events. [2023-08-26 18:37:03,800 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-26 18:37:03,800 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45 conditions, 12 events. 0/12 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 1 event pairs, 0 based on Foata normal form. 1/13 useless extension candidates. Maximal degree in co-relation 0. Up to 4 conditions per place. [2023-08-26 18:37:03,800 INFO L140 encePairwiseOnDemand]: 229/236 looper letters, 0 selfloop transitions, 0 changer transitions 12/12 dead transitions. [2023-08-26 18:37:03,800 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 12 transitions, 71 flow [2023-08-26 18:37:03,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-26 18:37:03,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-26 18:37:03,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 587 transitions. [2023-08-26 18:37:03,802 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3553268765133172 [2023-08-26 18:37:03,802 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 587 transitions. [2023-08-26 18:37:03,802 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 587 transitions. [2023-08-26 18:37:03,803 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 18:37:03,803 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 587 transitions. [2023-08-26 18:37:03,804 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 83.85714285714286) internal successors, (587), 7 states have internal predecessors, (587), 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 18:37:03,806 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 236.0) internal successors, (1888), 8 states have internal predecessors, (1888), 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 18:37:03,806 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 236.0) internal successors, (1888), 8 states have internal predecessors, (1888), 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 18:37:03,806 INFO L175 Difference]: Start difference. First operand has 35 places, 12 transitions, 48 flow. Second operand 7 states and 587 transitions. [2023-08-26 18:37:03,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 12 transitions, 71 flow [2023-08-26 18:37:03,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 12 transitions, 61 flow, removed 1 selfloop flow, removed 4 redundant places. [2023-08-26 18:37:03,808 INFO L231 Difference]: Finished difference. Result has 27 places, 0 transitions, 0 flow [2023-08-26 18:37:03,808 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=236, PETRI_DIFFERENCE_MINUEND_FLOW=34, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=11, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=27, PETRI_TRANSITIONS=0} [2023-08-26 18:37:03,809 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, -3 predicate places. [2023-08-26 18:37:03,809 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 0 transitions, 0 flow [2023-08-26 18:37:03,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 83.71428571428571) internal successors, (586), 7 states have internal predecessors, (586), 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 18:37:03,812 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (10 of 11 remaining) [2023-08-26 18:37:03,813 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 11 remaining) [2023-08-26 18:37:03,813 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 11 remaining) [2023-08-26 18:37:03,813 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONASSERT (7 of 11 remaining) [2023-08-26 18:37:03,814 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 11 remaining) [2023-08-26 18:37:03,815 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 11 remaining) [2023-08-26 18:37:03,815 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 11 remaining) [2023-08-26 18:37:03,815 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONASSERT (3 of 11 remaining) [2023-08-26 18:37:03,815 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONASSERT (2 of 11 remaining) [2023-08-26 18:37:03,815 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONASSERT (1 of 11 remaining) [2023-08-26 18:37:03,816 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONASSERT (0 of 11 remaining) [2023-08-26 18:37:03,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-26 18:37:03,816 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 18:37:03,821 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-26 18:37:03,821 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-26 18:37:03,825 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 06:37:03 BasicIcfg [2023-08-26 18:37:03,825 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-26 18:37:03,825 INFO L158 Benchmark]: Toolchain (without parser) took 6050.13ms. Allocated memory was 354.4MB in the beginning and 453.0MB in the end (delta: 98.6MB). Free memory was 329.1MB in the beginning and 405.8MB in the end (delta: -76.7MB). Peak memory consumption was 23.3MB. Max. memory is 16.0GB. [2023-08-26 18:37:03,825 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 354.4MB. Free memory is still 330.6MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-26 18:37:03,826 INFO L158 Benchmark]: CACSL2BoogieTranslator took 409.33ms. Allocated memory is still 354.4MB. Free memory was 328.7MB in the beginning and 309.8MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-26 18:37:03,826 INFO L158 Benchmark]: Boogie Procedure Inliner took 60.32ms. Allocated memory is still 354.4MB. Free memory was 309.8MB in the beginning and 307.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-26 18:37:03,826 INFO L158 Benchmark]: Boogie Preprocessor took 36.19ms. Allocated memory is still 354.4MB. Free memory was 307.7MB in the beginning and 306.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-26 18:37:03,827 INFO L158 Benchmark]: RCFGBuilder took 363.36ms. Allocated memory is still 354.4MB. Free memory was 306.0MB in the beginning and 291.4MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-08-26 18:37:03,827 INFO L158 Benchmark]: TraceAbstraction took 5175.30ms. Allocated memory was 354.4MB in the beginning and 453.0MB in the end (delta: 98.6MB). Free memory was 290.9MB in the beginning and 405.8MB in the end (delta: -114.9MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-26 18:37:03,829 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 354.4MB. Free memory is still 330.6MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 409.33ms. Allocated memory is still 354.4MB. Free memory was 328.7MB in the beginning and 309.8MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 60.32ms. Allocated memory is still 354.4MB. Free memory was 309.8MB in the beginning and 307.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 36.19ms. Allocated memory is still 354.4MB. Free memory was 307.7MB in the beginning and 306.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 363.36ms. Allocated memory is still 354.4MB. Free memory was 306.0MB in the beginning and 291.4MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 5175.30ms. Allocated memory was 354.4MB in the beginning and 453.0MB in the end (delta: 98.6MB). Free memory was 290.9MB in the beginning and 405.8MB in the end (delta: -114.9MB). There was no memory consumed. 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: 3.3s, 101 PlacesBefore, 30 PlacesAfterwards, 105 TransitionsBefore, 29 TransitionsAfterwards, 1768 CoEnabledTransitionPairs, 8 FixpointIterations, 54 TrivialSequentialCompositions, 52 ConcurrentSequentialCompositions, 3 TrivialYvCompositions, 9 ConcurrentYvCompositions, 5 ChoiceCompositions, 123 TotalNumberOfCompositions, 4931 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2183, independent: 1927, independent conditional: 0, independent unconditional: 1927, dependent: 256, dependent conditional: 0, dependent unconditional: 256, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1113, independent: 1063, independent conditional: 0, independent unconditional: 1063, dependent: 50, dependent conditional: 0, dependent unconditional: 50, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2183, independent: 864, independent conditional: 0, independent unconditional: 864, dependent: 206, dependent conditional: 0, dependent unconditional: 206, unknown: 1113, unknown conditional: 0, unknown unconditional: 1113] , Statistics on independence cache: Total cache size (in pairs): 72, Positive cache size: 47, Positive conditional cache size: 0, Positive unconditional cache size: 47, Negative cache size: 25, Negative conditional cache size: 0, Negative unconditional cache size: 25, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - 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 - 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 - 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 - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 138 locations, 11 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: 5.1s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.4s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 77 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 77 mSDsluCounter, 3 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 425 IncrementalHoareTripleChecker+Invalid, 431 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 2 mSDtfsCounter, 425 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 30 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=120occurred in iteration=3, InterpolantAutomatonStates: 37, 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, 66 NumberOfCodeBlocks, 66 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 57 ConstructedInterpolants, 0 QuantifiedInterpolants, 302 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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 18:37:03,849 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...