/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.order.of.the.error.locations.to.be.checked PROGRAM_FIRST -tc /storage/repos/CAV22/benchmarks/AutomizerCInline.xml -i /storage/repos/CAV22/benchmarks/increased_bounds/goblint-regression_13-privatized_41-traces-ex-7_unknown_1_pos_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-04 04:33:48,785 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-04 04:33:48,831 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-04 04:33:48,835 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-04 04:33:48,835 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-04 04:33:48,835 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-04 04:33:48,836 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-04 04:33:48,854 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-04 04:33:48,854 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-04 04:33:48,854 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-04 04:33:48,855 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-04 04:33:48,855 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-04 04:33:48,856 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-04 04:33:48,856 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-04 04:33:48,856 INFO L153 SettingsManager]: * Use SBE=true [2023-08-04 04:33:48,857 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-04 04:33:48,857 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-04 04:33:48,857 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-04 04:33:48,857 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-04 04:33:48,858 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-04 04:33:48,858 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-04 04:33:48,858 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-04 04:33:48,859 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-04 04:33:48,859 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-04 04:33:48,859 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-04 04:33:48,860 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-04 04:33:48,860 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-04 04:33:48,860 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-04 04:33:48,861 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-04 04:33:48,861 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-04 04:33:48,861 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 04:33:48,862 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-04 04:33:48,862 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-04 04:33:48,862 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-04 04:33:48,862 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-04 04:33:48,863 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-04 04:33:48,863 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-04 04:33:48,863 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-04 04:33:48,863 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-04 04:33:48,864 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-04 04:33:48,864 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-04 04:33:48,867 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST [2023-08-04 04:33:49,099 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-04 04:33:49,125 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-04 04:33:49,127 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-04 04:33:49,128 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-04 04:33:49,129 INFO L274 PluginConnector]: CDTParser initialized [2023-08-04 04:33:49,130 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/goblint-regression_13-privatized_41-traces-ex-7_unknown_1_pos_bound2.i [2023-08-04 04:33:50,265 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-04 04:33:50,445 INFO L384 CDTParser]: Found 1 translation units. [2023-08-04 04:33:50,446 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/goblint-regression_13-privatized_41-traces-ex-7_unknown_1_pos_bound2.i [2023-08-04 04:33:50,465 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1be041dc7/1054d408a1bd41b89f3bd931297746c3/FLAG6316c1d49 [2023-08-04 04:33:50,479 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1be041dc7/1054d408a1bd41b89f3bd931297746c3 [2023-08-04 04:33:50,481 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-04 04:33:50,482 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-04 04:33:50,483 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-04 04:33:50,483 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-04 04:33:50,486 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-04 04:33:50,486 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 04:33:50" (1/1) ... [2023-08-04 04:33:50,487 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5fb4cba1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:33:50, skipping insertion in model container [2023-08-04 04:33:50,487 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 04:33:50" (1/1) ... [2023-08-04 04:33:50,517 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-04 04:33:50,674 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/goblint-regression_13-privatized_41-traces-ex-7_unknown_1_pos_bound2.i[1097,1110] [2023-08-04 04:33:50,824 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 04:33:50,838 INFO L201 MainTranslator]: Completed pre-run [2023-08-04 04:33:50,854 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/goblint-regression_13-privatized_41-traces-ex-7_unknown_1_pos_bound2.i[1097,1110] [2023-08-04 04:33:50,870 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [231] [2023-08-04 04:33:50,872 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [232] [2023-08-04 04:33:50,898 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 04:33:50,937 INFO L206 MainTranslator]: Completed translation [2023-08-04 04:33:50,939 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:33:50 WrapperNode [2023-08-04 04:33:50,940 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-04 04:33:50,941 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-04 04:33:50,941 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-04 04:33:50,941 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-04 04:33:50,947 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:33:50" (1/1) ... [2023-08-04 04:33:50,962 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:33:50" (1/1) ... [2023-08-04 04:33:50,979 INFO L138 Inliner]: procedures = 162, calls = 28, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 56 [2023-08-04 04:33:50,980 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-04 04:33:50,980 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-04 04:33:50,980 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-04 04:33:50,981 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-04 04:33:50,988 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:33:50" (1/1) ... [2023-08-04 04:33:50,988 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:33:50" (1/1) ... [2023-08-04 04:33:50,993 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:33:50" (1/1) ... [2023-08-04 04:33:50,994 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:33:50" (1/1) ... [2023-08-04 04:33:50,998 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:33:50" (1/1) ... [2023-08-04 04:33:51,001 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:33:50" (1/1) ... [2023-08-04 04:33:51,004 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:33:50" (1/1) ... [2023-08-04 04:33:51,005 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:33:50" (1/1) ... [2023-08-04 04:33:51,007 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-04 04:33:51,008 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-04 04:33:51,008 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-04 04:33:51,008 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-04 04:33:51,009 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:33:50" (1/1) ... [2023-08-04 04:33:51,014 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 04:33:51,024 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 04:33:51,036 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) [2023-08-04 04:33:51,045 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 [2023-08-04 04:33:51,063 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-04 04:33:51,063 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-04 04:33:51,063 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-04 04:33:51,063 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-04 04:33:51,063 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-04 04:33:51,064 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-04 04:33:51,064 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-04 04:33:51,064 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-04 04:33:51,064 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-04 04:33:51,064 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-04 04:33:51,065 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-04 04:33:51,161 INFO L236 CfgBuilder]: Building ICFG [2023-08-04 04:33:51,162 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-04 04:33:51,323 INFO L277 CfgBuilder]: Performing block encoding [2023-08-04 04:33:51,329 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-04 04:33:51,329 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-08-04 04:33:51,331 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 04:33:51 BoogieIcfgContainer [2023-08-04 04:33:51,331 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-04 04:33:51,332 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-04 04:33:51,333 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-04 04:33:51,335 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-04 04:33:51,336 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.08 04:33:50" (1/3) ... [2023-08-04 04:33:51,336 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77ac64ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 04:33:51, skipping insertion in model container [2023-08-04 04:33:51,336 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:33:50" (2/3) ... [2023-08-04 04:33:51,337 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77ac64ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 04:33:51, skipping insertion in model container [2023-08-04 04:33:51,337 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 04:33:51" (3/3) ... [2023-08-04 04:33:51,338 INFO L112 eAbstractionObserver]: Analyzing ICFG goblint-regression_13-privatized_41-traces-ex-7_unknown_1_pos_bound2.i [2023-08-04 04:33:51,345 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-04 04:33:51,354 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-04 04:33:51,354 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-04 04:33:51,354 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-04 04:33:51,392 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-04 04:33:51,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 68 places, 67 transitions, 139 flow [2023-08-04 04:33:51,461 INFO L124 PetriNetUnfolderBase]: 4/91 cut-off events. [2023-08-04 04:33:51,461 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 04:33:51,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96 conditions, 91 events. 4/91 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 131 event pairs, 0 based on Foata normal form. 0/83 useless extension candidates. Maximal degree in co-relation 50. Up to 4 conditions per place. [2023-08-04 04:33:51,465 INFO L82 GeneralOperation]: Start removeDead. Operand has 68 places, 67 transitions, 139 flow [2023-08-04 04:33:51,468 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 60 places, 58 transitions, 119 flow [2023-08-04 04:33:51,473 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 04:33:51,481 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 60 places, 58 transitions, 119 flow [2023-08-04 04:33:51,484 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 60 places, 58 transitions, 119 flow [2023-08-04 04:33:51,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 60 places, 58 transitions, 119 flow [2023-08-04 04:33:51,502 INFO L124 PetriNetUnfolderBase]: 2/74 cut-off events. [2023-08-04 04:33:51,503 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 04:33:51,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 74 events. 2/74 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 74 event pairs, 0 based on Foata normal form. 0/70 useless extension candidates. Maximal degree in co-relation 42. Up to 4 conditions per place. [2023-08-04 04:33:51,504 INFO L119 LiptonReduction]: Number of co-enabled transitions 420 [2023-08-04 04:33:53,505 INFO L134 LiptonReduction]: Checked pairs total: 867 [2023-08-04 04:33:53,505 INFO L136 LiptonReduction]: Total number of compositions: 46 [2023-08-04 04:33:53,523 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-04 04:33:53,530 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=true, 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;@73c658e5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 04:33:53,531 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-04 04:33:53,536 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 04:33:53,537 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2023-08-04 04:33:53,537 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 04:33:53,537 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:33:53,538 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-04 04:33:53,538 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 04:33:53,543 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:33:53,543 INFO L85 PathProgramCache]: Analyzing trace with hash 223642912, now seen corresponding path program 1 times [2023-08-04 04:33:53,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:33:53,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749443925] [2023-08-04 04:33:53,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:33:53,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:33:53,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:33:53,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:33:53,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:33:53,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749443925] [2023-08-04 04:33:53,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749443925] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:33:53,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:33:53,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 04:33:53,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430375870] [2023-08-04 04:33:53,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:33:53,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 04:33:53,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:33:53,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 04:33:53,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 04:33:53,799 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 113 [2023-08-04 04:33:53,801 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 16 places, 13 transitions, 29 flow. Second operand has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 3 states have internal predecessors, (182), 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) [2023-08-04 04:33:53,801 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:33:53,801 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 113 [2023-08-04 04:33:53,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:33:53,839 INFO L124 PetriNetUnfolderBase]: 18/50 cut-off events. [2023-08-04 04:33:53,839 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 04:33:53,839 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103 conditions, 50 events. 18/50 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 139 event pairs, 0 based on Foata normal form. 0/44 useless extension candidates. Maximal degree in co-relation 92. Up to 43 conditions per place. [2023-08-04 04:33:53,841 INFO L140 encePairwiseOnDemand]: 110/113 looper letters, 12 selfloop transitions, 2 changer transitions 1/17 dead transitions. [2023-08-04 04:33:53,841 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 18 places, 17 transitions, 67 flow [2023-08-04 04:33:53,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 04:33:53,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 04:33:53,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 193 transitions. [2023-08-04 04:33:53,852 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5693215339233039 [2023-08-04 04:33:53,852 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 193 transitions. [2023-08-04 04:33:53,853 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 193 transitions. [2023-08-04 04:33:53,854 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:33:53,856 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 193 transitions. [2023-08-04 04:33:53,858 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 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) [2023-08-04 04:33:53,861 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 113.0) internal successors, (452), 4 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:33:53,862 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 113.0) internal successors, (452), 4 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:33:53,863 INFO L175 Difference]: Start difference. First operand has 16 places, 13 transitions, 29 flow. Second operand 3 states and 193 transitions. [2023-08-04 04:33:53,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 18 places, 17 transitions, 67 flow [2023-08-04 04:33:53,865 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 17 transitions, 67 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-04 04:33:53,866 INFO L231 Difference]: Finished difference. Result has 19 places, 13 transitions, 37 flow [2023-08-04 04:33:53,868 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=29, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=37, PETRI_PLACES=19, PETRI_TRANSITIONS=13} [2023-08-04 04:33:53,871 INFO L281 CegarLoopForPetriNet]: 16 programPoint places, 3 predicate places. [2023-08-04 04:33:53,871 INFO L495 AbstractCegarLoop]: Abstraction has has 19 places, 13 transitions, 37 flow [2023-08-04 04:33:53,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 3 states have internal predecessors, (182), 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) [2023-08-04 04:33:53,871 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:33:53,872 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:33:53,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-04 04:33:53,872 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 04:33:53,872 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:33:53,873 INFO L85 PathProgramCache]: Analyzing trace with hash -1076638894, now seen corresponding path program 1 times [2023-08-04 04:33:53,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:33:53,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027947543] [2023-08-04 04:33:53,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:33:53,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:33:53,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:33:53,970 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:33:53,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:33:53,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027947543] [2023-08-04 04:33:53,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027947543] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 04:33:53,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1149810643] [2023-08-04 04:33:53,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:33:53,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 04:33:53,971 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 04:33:53,974 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 04:33:53,985 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-04 04:33:54,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:33:54,040 INFO L262 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 04:33:54,043 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 04:33:54,100 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:33:54,100 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 04:33:54,123 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:33:54,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1149810643] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 04:33:54,124 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 04:33:54,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-04 04:33:54,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312814756] [2023-08-04 04:33:54,125 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 04:33:54,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 04:33:54,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:33:54,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 04:33:54,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 04:33:54,143 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 113 [2023-08-04 04:33:54,143 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 13 transitions, 37 flow. Second operand has 5 states, 5 states have (on average 60.4) internal successors, (302), 5 states have internal predecessors, (302), 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) [2023-08-04 04:33:54,144 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:33:54,144 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 113 [2023-08-04 04:33:54,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:33:54,168 INFO L124 PetriNetUnfolderBase]: 6/22 cut-off events. [2023-08-04 04:33:54,168 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-04 04:33:54,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58 conditions, 22 events. 6/22 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 30 event pairs, 0 based on Foata normal form. 4/25 useless extension candidates. Maximal degree in co-relation 44. Up to 14 conditions per place. [2023-08-04 04:33:54,169 INFO L140 encePairwiseOnDemand]: 110/113 looper letters, 0 selfloop transitions, 0 changer transitions 13/13 dead transitions. [2023-08-04 04:33:54,169 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 18 places, 13 transitions, 57 flow [2023-08-04 04:33:54,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 04:33:54,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 04:33:54,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 244 transitions. [2023-08-04 04:33:54,176 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5398230088495575 [2023-08-04 04:33:54,177 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 244 transitions. [2023-08-04 04:33:54,179 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 244 transitions. [2023-08-04 04:33:54,181 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:33:54,184 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 244 transitions. [2023-08-04 04:33:54,186 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 61.0) internal successors, (244), 4 states have internal predecessors, (244), 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) [2023-08-04 04:33:54,189 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 113.0) internal successors, (565), 5 states have internal predecessors, (565), 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) [2023-08-04 04:33:54,189 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 113.0) internal successors, (565), 5 states have internal predecessors, (565), 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) [2023-08-04 04:33:54,189 INFO L175 Difference]: Start difference. First operand has 19 places, 13 transitions, 37 flow. Second operand 4 states and 244 transitions. [2023-08-04 04:33:54,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 18 places, 13 transitions, 57 flow [2023-08-04 04:33:54,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 15 places, 13 transitions, 51 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-04 04:33:54,191 INFO L231 Difference]: Finished difference. Result has 15 places, 0 transitions, 0 flow [2023-08-04 04:33:54,191 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=21, PETRI_DIFFERENCE_MINUEND_PLACES=12, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=9, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=15, PETRI_TRANSITIONS=0} [2023-08-04 04:33:54,192 INFO L281 CegarLoopForPetriNet]: 16 programPoint places, -1 predicate places. [2023-08-04 04:33:54,192 INFO L495 AbstractCegarLoop]: Abstraction has has 15 places, 0 transitions, 0 flow [2023-08-04 04:33:54,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 60.4) internal successors, (302), 5 states have internal predecessors, (302), 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) [2023-08-04 04:33:54,195 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-08-04 04:33:54,204 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-04 04:33:54,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 04:33:54,401 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-04 04:33:54,403 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE (1/2) [2023-08-04 04:33:54,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 68 places, 67 transitions, 139 flow [2023-08-04 04:33:54,419 INFO L124 PetriNetUnfolderBase]: 4/91 cut-off events. [2023-08-04 04:33:54,419 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 04:33:54,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96 conditions, 91 events. 4/91 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 131 event pairs, 0 based on Foata normal form. 0/83 useless extension candidates. Maximal degree in co-relation 50. Up to 4 conditions per place. [2023-08-04 04:33:54,422 INFO L82 GeneralOperation]: Start removeDead. Operand has 68 places, 67 transitions, 139 flow [2023-08-04 04:33:54,423 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 50 places, 47 transitions, 99 flow [2023-08-04 04:33:54,423 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 04:33:54,423 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 50 places, 47 transitions, 99 flow [2023-08-04 04:33:54,424 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 50 places, 47 transitions, 99 flow [2023-08-04 04:33:54,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 50 places, 47 transitions, 99 flow [2023-08-04 04:33:54,438 INFO L124 PetriNetUnfolderBase]: 0/51 cut-off events. [2023-08-04 04:33:54,438 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 04:33:54,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56 conditions, 51 events. 0/51 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 19 event pairs, 0 based on Foata normal form. 0/51 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2023-08-04 04:33:54,439 INFO L119 LiptonReduction]: Number of co-enabled transitions 200 [2023-08-04 04:33:56,507 INFO L134 LiptonReduction]: Checked pairs total: 151 [2023-08-04 04:33:56,507 INFO L136 LiptonReduction]: Total number of compositions: 44 [2023-08-04 04:33:56,509 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-04 04:33:56,510 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=true, 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;@73c658e5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 04:33:56,510 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-04 04:33:56,547 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 04:33:56,547 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2023-08-04 04:33:56,547 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 04:33:56,547 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:33:56,547 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-04 04:33:56,548 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-04 04:33:56,548 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:33:56,548 INFO L85 PathProgramCache]: Analyzing trace with hash 8502001, now seen corresponding path program 1 times [2023-08-04 04:33:56,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:33:56,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888361239] [2023-08-04 04:33:56,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:33:56,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:33:56,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 04:33:56,584 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-04 04:33:56,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 04:33:56,628 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-04 04:33:56,628 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-04 04:33:56,628 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-04 04:33:56,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-04 04:33:56,628 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-04 04:33:56,629 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-04 04:33:56,630 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-04 04:33:56,630 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-04 04:33:56,646 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-04 04:33:56,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 81 places, 78 transitions, 168 flow [2023-08-04 04:33:56,661 INFO L124 PetriNetUnfolderBase]: 6/131 cut-off events. [2023-08-04 04:33:56,661 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-04 04:33:56,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141 conditions, 131 events. 6/131 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 242 event pairs, 0 based on Foata normal form. 0/119 useless extension candidates. Maximal degree in co-relation 92. Up to 6 conditions per place. [2023-08-04 04:33:56,662 INFO L82 GeneralOperation]: Start removeDead. Operand has 81 places, 78 transitions, 168 flow [2023-08-04 04:33:56,662 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 73 places, 69 transitions, 146 flow [2023-08-04 04:33:56,662 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 04:33:56,663 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 73 places, 69 transitions, 146 flow [2023-08-04 04:33:56,663 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 73 places, 69 transitions, 146 flow [2023-08-04 04:33:56,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 73 places, 69 transitions, 146 flow [2023-08-04 04:33:56,676 INFO L124 PetriNetUnfolderBase]: 3/106 cut-off events. [2023-08-04 04:33:56,677 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-04 04:33:56,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114 conditions, 106 events. 3/106 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 143 event pairs, 0 based on Foata normal form. 0/100 useless extension candidates. Maximal degree in co-relation 76. Up to 6 conditions per place. [2023-08-04 04:33:56,678 INFO L119 LiptonReduction]: Number of co-enabled transitions 1060 [2023-08-04 04:33:58,343 INFO L134 LiptonReduction]: Checked pairs total: 2590 [2023-08-04 04:33:58,343 INFO L136 LiptonReduction]: Total number of compositions: 50 [2023-08-04 04:33:58,351 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-04 04:33:58,353 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=true, 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;@73c658e5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 04:33:58,353 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-04 04:33:58,355 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 04:33:58,355 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2023-08-04 04:33:58,355 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 04:33:58,355 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:33:58,355 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-04 04:33:58,355 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 04:33:58,356 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:33:58,356 INFO L85 PathProgramCache]: Analyzing trace with hash 398280665, now seen corresponding path program 1 times [2023-08-04 04:33:58,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:33:58,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374529564] [2023-08-04 04:33:58,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:33:58,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:33:58,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:33:58,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:33:58,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:33:58,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374529564] [2023-08-04 04:33:58,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374529564] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:33:58,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:33:58,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 04:33:58,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965529] [2023-08-04 04:33:58,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:33:58,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 04:33:58,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:33:58,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 04:33:58,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 04:33:58,417 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 128 [2023-08-04 04:33:58,418 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 20 transitions, 48 flow. Second operand has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 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) [2023-08-04 04:33:58,418 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:33:58,418 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 128 [2023-08-04 04:33:58,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:33:58,492 INFO L124 PetriNetUnfolderBase]: 219/424 cut-off events. [2023-08-04 04:33:58,492 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-08-04 04:33:58,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 831 conditions, 424 events. 219/424 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1912 event pairs, 96 based on Foata normal form. 0/400 useless extension candidates. Maximal degree in co-relation 196. Up to 384 conditions per place. [2023-08-04 04:33:58,498 INFO L140 encePairwiseOnDemand]: 125/128 looper letters, 19 selfloop transitions, 2 changer transitions 0/25 dead transitions. [2023-08-04 04:33:58,498 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 25 transitions, 100 flow [2023-08-04 04:33:58,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 04:33:58,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 04:33:58,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 229 transitions. [2023-08-04 04:33:58,500 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5963541666666666 [2023-08-04 04:33:58,500 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 229 transitions. [2023-08-04 04:33:58,500 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 229 transitions. [2023-08-04 04:33:58,500 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:33:58,500 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 229 transitions. [2023-08-04 04:33:58,501 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 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) [2023-08-04 04:33:58,502 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 128.0) internal successors, (512), 4 states have internal predecessors, (512), 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) [2023-08-04 04:33:58,503 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 128.0) internal successors, (512), 4 states have internal predecessors, (512), 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) [2023-08-04 04:33:58,506 INFO L175 Difference]: Start difference. First operand has 25 places, 20 transitions, 48 flow. Second operand 3 states and 229 transitions. [2023-08-04 04:33:58,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 25 transitions, 100 flow [2023-08-04 04:33:58,507 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 25 transitions, 100 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-04 04:33:58,508 INFO L231 Difference]: Finished difference. Result has 28 places, 21 transitions, 60 flow [2023-08-04 04:33:58,508 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=60, PETRI_PLACES=28, PETRI_TRANSITIONS=21} [2023-08-04 04:33:58,510 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 3 predicate places. [2023-08-04 04:33:58,510 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 21 transitions, 60 flow [2023-08-04 04:33:58,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 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) [2023-08-04 04:33:58,511 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:33:58,511 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:33:58,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-04 04:33:58,512 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 04:33:58,513 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:33:58,513 INFO L85 PathProgramCache]: Analyzing trace with hash 52218392, now seen corresponding path program 1 times [2023-08-04 04:33:58,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:33:58,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716204834] [2023-08-04 04:33:58,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:33:58,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:33:58,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:33:58,574 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:33:58,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:33:58,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716204834] [2023-08-04 04:33:58,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716204834] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 04:33:58,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [220873404] [2023-08-04 04:33:58,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:33:58,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 04:33:58,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 04:33:58,576 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 04:33:58,596 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-04 04:33:58,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:33:58,639 INFO L262 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 04:33:58,640 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 04:33:58,652 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:33:58,652 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 04:33:58,667 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:33:58,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [220873404] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 04:33:58,667 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 04:33:58,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-04 04:33:58,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821572480] [2023-08-04 04:33:58,667 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 04:33:58,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 04:33:58,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:33:58,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 04:33:58,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 04:33:58,689 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 128 [2023-08-04 04:33:58,689 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 21 transitions, 60 flow. Second operand has 5 states, 5 states have (on average 70.4) internal successors, (352), 5 states have internal predecessors, (352), 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) [2023-08-04 04:33:58,689 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:33:58,689 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 128 [2023-08-04 04:33:58,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:33:58,750 INFO L124 PetriNetUnfolderBase]: 207/376 cut-off events. [2023-08-04 04:33:58,750 INFO L125 PetriNetUnfolderBase]: For 28/28 co-relation queries the response was YES. [2023-08-04 04:33:58,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 806 conditions, 376 events. 207/376 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1601 event pairs, 16 based on Foata normal form. 4/380 useless extension candidates. Maximal degree in co-relation 212. Up to 256 conditions per place. [2023-08-04 04:33:58,752 INFO L140 encePairwiseOnDemand]: 124/128 looper letters, 25 selfloop transitions, 3 changer transitions 1/33 dead transitions. [2023-08-04 04:33:58,752 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 33 transitions, 142 flow [2023-08-04 04:33:58,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 04:33:58,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 04:33:58,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 302 transitions. [2023-08-04 04:33:58,753 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.58984375 [2023-08-04 04:33:58,754 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 302 transitions. [2023-08-04 04:33:58,754 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 302 transitions. [2023-08-04 04:33:58,754 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:33:58,754 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 302 transitions. [2023-08-04 04:33:58,754 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 75.5) internal successors, (302), 4 states have internal predecessors, (302), 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) [2023-08-04 04:33:58,755 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 128.0) internal successors, (640), 5 states have internal predecessors, (640), 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) [2023-08-04 04:33:58,756 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 128.0) internal successors, (640), 5 states have internal predecessors, (640), 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) [2023-08-04 04:33:58,756 INFO L175 Difference]: Start difference. First operand has 28 places, 21 transitions, 60 flow. Second operand 4 states and 302 transitions. [2023-08-04 04:33:58,756 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 33 transitions, 142 flow [2023-08-04 04:33:58,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 33 transitions, 140 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 04:33:58,757 INFO L231 Difference]: Finished difference. Result has 32 places, 21 transitions, 72 flow [2023-08-04 04:33:58,757 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=72, PETRI_PLACES=32, PETRI_TRANSITIONS=21} [2023-08-04 04:33:58,758 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 7 predicate places. [2023-08-04 04:33:58,758 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 21 transitions, 72 flow [2023-08-04 04:33:58,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 70.4) internal successors, (352), 5 states have internal predecessors, (352), 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) [2023-08-04 04:33:58,758 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:33:58,759 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:33:58,767 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-04 04:33:58,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 04:33:58,965 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 04:33:58,965 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:33:58,965 INFO L85 PathProgramCache]: Analyzing trace with hash -2025238504, now seen corresponding path program 1 times [2023-08-04 04:33:58,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:33:58,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136673288] [2023-08-04 04:33:58,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:33:58,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:33:58,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:33:59,028 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-04 04:33:59,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:33:59,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136673288] [2023-08-04 04:33:59,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136673288] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:33:59,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:33:59,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-04 04:33:59,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821278926] [2023-08-04 04:33:59,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:33:59,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 04:33:59,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:33:59,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 04:33:59,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 04:33:59,034 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 128 [2023-08-04 04:33:59,035 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 21 transitions, 72 flow. Second operand has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 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) [2023-08-04 04:33:59,035 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:33:59,035 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 128 [2023-08-04 04:33:59,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:33:59,088 INFO L124 PetriNetUnfolderBase]: 210/415 cut-off events. [2023-08-04 04:33:59,089 INFO L125 PetriNetUnfolderBase]: For 263/263 co-relation queries the response was YES. [2023-08-04 04:33:59,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 951 conditions, 415 events. 210/415 cut-off events. For 263/263 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1812 event pairs, 80 based on Foata normal form. 9/424 useless extension candidates. Maximal degree in co-relation 502. Up to 255 conditions per place. [2023-08-04 04:33:59,091 INFO L140 encePairwiseOnDemand]: 124/128 looper letters, 28 selfloop transitions, 3 changer transitions 0/34 dead transitions. [2023-08-04 04:33:59,091 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 34 transitions, 182 flow [2023-08-04 04:33:59,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 04:33:59,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 04:33:59,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 240 transitions. [2023-08-04 04:33:59,093 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.625 [2023-08-04 04:33:59,093 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 240 transitions. [2023-08-04 04:33:59,093 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 240 transitions. [2023-08-04 04:33:59,093 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:33:59,093 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 240 transitions. [2023-08-04 04:33:59,094 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 80.0) internal successors, (240), 3 states have internal predecessors, (240), 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) [2023-08-04 04:33:59,095 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 128.0) internal successors, (512), 4 states have internal predecessors, (512), 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) [2023-08-04 04:33:59,095 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 128.0) internal successors, (512), 4 states have internal predecessors, (512), 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) [2023-08-04 04:33:59,095 INFO L175 Difference]: Start difference. First operand has 32 places, 21 transitions, 72 flow. Second operand 3 states and 240 transitions. [2023-08-04 04:33:59,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 34 transitions, 182 flow [2023-08-04 04:33:59,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 34 transitions, 170 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-08-04 04:33:59,097 INFO L231 Difference]: Finished difference. Result has 32 places, 23 transitions, 84 flow [2023-08-04 04:33:59,097 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=65, PETRI_DIFFERENCE_MINUEND_PLACES=29, 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=84, PETRI_PLACES=32, PETRI_TRANSITIONS=23} [2023-08-04 04:33:59,098 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 7 predicate places. [2023-08-04 04:33:59,098 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 23 transitions, 84 flow [2023-08-04 04:33:59,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 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) [2023-08-04 04:33:59,098 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:33:59,098 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:33:59,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-04 04:33:59,099 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 04:33:59,099 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:33:59,099 INFO L85 PathProgramCache]: Analyzing trace with hash -674336288, now seen corresponding path program 1 times [2023-08-04 04:33:59,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:33:59,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538318921] [2023-08-04 04:33:59,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:33:59,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:33:59,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:33:59,227 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-04 04:33:59,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:33:59,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538318921] [2023-08-04 04:33:59,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538318921] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:33:59,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:33:59,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-04 04:33:59,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142002073] [2023-08-04 04:33:59,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:33:59,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-04 04:33:59,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:33:59,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-04 04:33:59,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-04 04:33:59,283 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 128 [2023-08-04 04:33:59,283 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 23 transitions, 84 flow. Second operand has 4 states, 4 states have (on average 68.0) internal successors, (272), 4 states have internal predecessors, (272), 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) [2023-08-04 04:33:59,283 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:33:59,283 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 128 [2023-08-04 04:33:59,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:33:59,328 INFO L124 PetriNetUnfolderBase]: 38/140 cut-off events. [2023-08-04 04:33:59,328 INFO L125 PetriNetUnfolderBase]: For 102/102 co-relation queries the response was YES. [2023-08-04 04:33:59,328 INFO L83 FinitePrefix]: Finished finitePrefix Result has 348 conditions, 140 events. 38/140 cut-off events. For 102/102 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 522 event pairs, 15 based on Foata normal form. 35/175 useless extension candidates. Maximal degree in co-relation 176. Up to 73 conditions per place. [2023-08-04 04:33:59,329 INFO L140 encePairwiseOnDemand]: 121/128 looper letters, 16 selfloop transitions, 7 changer transitions 0/28 dead transitions. [2023-08-04 04:33:59,329 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 28 transitions, 155 flow [2023-08-04 04:33:59,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 04:33:59,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 04:33:59,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 283 transitions. [2023-08-04 04:33:59,330 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.552734375 [2023-08-04 04:33:59,330 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 283 transitions. [2023-08-04 04:33:59,330 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 283 transitions. [2023-08-04 04:33:59,330 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:33:59,331 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 283 transitions. [2023-08-04 04:33:59,331 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 70.75) internal successors, (283), 4 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:33:59,332 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 128.0) internal successors, (640), 5 states have internal predecessors, (640), 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) [2023-08-04 04:33:59,333 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 128.0) internal successors, (640), 5 states have internal predecessors, (640), 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) [2023-08-04 04:33:59,333 INFO L175 Difference]: Start difference. First operand has 32 places, 23 transitions, 84 flow. Second operand 4 states and 283 transitions. [2023-08-04 04:33:59,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 28 transitions, 155 flow [2023-08-04 04:33:59,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 28 transitions, 152 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 04:33:59,334 INFO L231 Difference]: Finished difference. Result has 34 places, 23 transitions, 95 flow [2023-08-04 04:33:59,335 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=81, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=95, PETRI_PLACES=34, PETRI_TRANSITIONS=23} [2023-08-04 04:33:59,335 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 9 predicate places. [2023-08-04 04:33:59,335 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 23 transitions, 95 flow [2023-08-04 04:33:59,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 68.0) internal successors, (272), 4 states have internal predecessors, (272), 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) [2023-08-04 04:33:59,336 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:33:59,336 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:33:59,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-04 04:33:59,336 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 04:33:59,336 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:33:59,336 INFO L85 PathProgramCache]: Analyzing trace with hash 1819597856, now seen corresponding path program 2 times [2023-08-04 04:33:59,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:33:59,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505612282] [2023-08-04 04:33:59,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:33:59,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:33:59,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:33:59,430 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-04 04:33:59,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:33:59,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505612282] [2023-08-04 04:33:59,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505612282] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:33:59,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:33:59,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-04 04:33:59,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252918406] [2023-08-04 04:33:59,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:33:59,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 04:33:59,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:33:59,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 04:33:59,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-04 04:33:59,481 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 128 [2023-08-04 04:33:59,482 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 23 transitions, 95 flow. Second operand has 5 states, 5 states have (on average 65.2) internal successors, (326), 5 states have internal predecessors, (326), 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) [2023-08-04 04:33:59,482 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:33:59,482 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 128 [2023-08-04 04:33:59,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:33:59,529 INFO L124 PetriNetUnfolderBase]: 33/118 cut-off events. [2023-08-04 04:33:59,529 INFO L125 PetriNetUnfolderBase]: For 98/98 co-relation queries the response was YES. [2023-08-04 04:33:59,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 347 conditions, 118 events. 33/118 cut-off events. For 98/98 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 401 event pairs, 22 based on Foata normal form. 6/124 useless extension candidates. Maximal degree in co-relation 221. Up to 64 conditions per place. [2023-08-04 04:33:59,530 INFO L140 encePairwiseOnDemand]: 122/128 looper letters, 20 selfloop transitions, 6 changer transitions 0/29 dead transitions. [2023-08-04 04:33:59,530 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 29 transitions, 176 flow [2023-08-04 04:33:59,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 04:33:59,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 04:33:59,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 277 transitions. [2023-08-04 04:33:59,531 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.541015625 [2023-08-04 04:33:59,531 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 277 transitions. [2023-08-04 04:33:59,531 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 277 transitions. [2023-08-04 04:33:59,532 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:33:59,532 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 277 transitions. [2023-08-04 04:33:59,532 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 69.25) internal successors, (277), 4 states have internal predecessors, (277), 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) [2023-08-04 04:33:59,533 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 128.0) internal successors, (640), 5 states have internal predecessors, (640), 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) [2023-08-04 04:33:59,533 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 128.0) internal successors, (640), 5 states have internal predecessors, (640), 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) [2023-08-04 04:33:59,533 INFO L175 Difference]: Start difference. First operand has 34 places, 23 transitions, 95 flow. Second operand 4 states and 277 transitions. [2023-08-04 04:33:59,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 29 transitions, 176 flow [2023-08-04 04:33:59,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 29 transitions, 167 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 04:33:59,535 INFO L231 Difference]: Finished difference. Result has 35 places, 23 transitions, 100 flow [2023-08-04 04:33:59,535 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=100, PETRI_PLACES=35, PETRI_TRANSITIONS=23} [2023-08-04 04:33:59,536 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 10 predicate places. [2023-08-04 04:33:59,536 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 23 transitions, 100 flow [2023-08-04 04:33:59,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 65.2) internal successors, (326), 5 states have internal predecessors, (326), 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) [2023-08-04 04:33:59,536 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:33:59,536 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:33:59,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-04 04:33:59,537 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 04:33:59,537 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:33:59,537 INFO L85 PathProgramCache]: Analyzing trace with hash 1016775689, now seen corresponding path program 1 times [2023-08-04 04:33:59,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:33:59,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181206994] [2023-08-04 04:33:59,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:33:59,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:33:59,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 04:33:59,552 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-04 04:33:59,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 04:33:59,568 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-04 04:33:59,568 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-04 04:33:59,568 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-08-04 04:33:59,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-04 04:33:59,568 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1] [2023-08-04 04:33:59,569 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was UNSAFE (1/2) [2023-08-04 04:33:59,571 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-04 04:33:59,571 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-04 04:33:59,606 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.08 04:33:59 BasicIcfg [2023-08-04 04:33:59,606 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-04 04:33:59,607 INFO L158 Benchmark]: Toolchain (without parser) took 9124.98ms. Allocated memory was 371.2MB in the beginning and 587.2MB in the end (delta: 216.0MB). Free memory was 313.4MB in the beginning and 464.5MB in the end (delta: -151.2MB). Peak memory consumption was 66.1MB. Max. memory is 16.0GB. [2023-08-04 04:33:59,607 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 371.2MB. Free memory is still 323.0MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-04 04:33:59,607 INFO L158 Benchmark]: CACSL2BoogieTranslator took 456.84ms. Allocated memory is still 371.2MB. Free memory was 313.4MB in the beginning and 293.6MB in the end (delta: 19.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-04 04:33:59,607 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.05ms. Allocated memory is still 371.2MB. Free memory was 293.6MB in the beginning and 291.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-04 04:33:59,608 INFO L158 Benchmark]: Boogie Preprocessor took 26.61ms. Allocated memory is still 371.2MB. Free memory was 291.5MB in the beginning and 290.4MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-04 04:33:59,608 INFO L158 Benchmark]: RCFGBuilder took 323.37ms. Allocated memory is still 371.2MB. Free memory was 290.4MB in the beginning and 275.8MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-08-04 04:33:59,608 INFO L158 Benchmark]: TraceAbstraction took 8273.92ms. Allocated memory was 371.2MB in the beginning and 587.2MB in the end (delta: 216.0MB). Free memory was 275.8MB in the beginning and 464.5MB in the end (delta: -188.7MB). Peak memory consumption was 28.3MB. Max. memory is 16.0GB. [2023-08-04 04:33:59,610 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 371.2MB. Free memory is still 323.0MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 456.84ms. Allocated memory is still 371.2MB. Free memory was 313.4MB in the beginning and 293.6MB in the end (delta: 19.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 39.05ms. Allocated memory is still 371.2MB. Free memory was 293.6MB in the beginning and 291.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 26.61ms. Allocated memory is still 371.2MB. Free memory was 291.5MB in the beginning and 290.4MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 323.37ms. Allocated memory is still 371.2MB. Free memory was 290.4MB in the beginning and 275.8MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 8273.92ms. Allocated memory was 371.2MB in the beginning and 587.2MB in the end (delta: 216.0MB). Free memory was 275.8MB in the beginning and 464.5MB in the end (delta: -188.7MB). Peak memory consumption was 28.3MB. 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: 2.0s, 60 PlacesBefore, 16 PlacesAfterwards, 58 TransitionsBefore, 13 TransitionsAfterwards, 420 CoEnabledTransitionPairs, 6 FixpointIterations, 25 TrivialSequentialCompositions, 18 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 1 ChoiceCompositions, 46 TotalNumberOfCompositions, 867 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 509, independent: 421, independent conditional: 0, independent unconditional: 421, dependent: 88, dependent conditional: 0, dependent unconditional: 88, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 223, independent: 206, independent conditional: 0, independent unconditional: 206, dependent: 17, dependent conditional: 0, dependent unconditional: 17, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 509, independent: 215, independent conditional: 0, independent unconditional: 215, dependent: 71, dependent conditional: 0, dependent unconditional: 71, unknown: 223, unknown conditional: 0, unknown unconditional: 223] , Statistics on independence cache: Total cache size (in pairs): 24, Positive cache size: 17, Positive conditional cache size: 0, Positive unconditional cache size: 17, Negative cache size: 7, Negative conditional cache size: 0, Negative unconditional cache size: 7, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.1s, 50 PlacesBefore, 8 PlacesAfterwards, 47 TransitionsBefore, 5 TransitionsAfterwards, 200 CoEnabledTransitionPairs, 6 FixpointIterations, 25 TrivialSequentialCompositions, 15 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 0 ChoiceCompositions, 44 TotalNumberOfCompositions, 151 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 151, independent: 151, independent conditional: 0, independent unconditional: 151, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 103, independent: 103, independent conditional: 0, independent unconditional: 103, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 151, independent: 48, independent conditional: 0, independent unconditional: 48, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 103, unknown conditional: 0, unknown unconditional: 103] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.7s, 73 PlacesBefore, 25 PlacesAfterwards, 69 TransitionsBefore, 20 TransitionsAfterwards, 1060 CoEnabledTransitionPairs, 6 FixpointIterations, 25 TrivialSequentialCompositions, 22 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 1 ChoiceCompositions, 50 TotalNumberOfCompositions, 2590 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 973, independent: 835, independent conditional: 0, independent unconditional: 835, dependent: 138, dependent conditional: 0, dependent unconditional: 138, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 492, independent: 468, independent conditional: 0, independent unconditional: 468, dependent: 24, dependent conditional: 0, dependent unconditional: 24, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 973, independent: 367, independent conditional: 0, independent unconditional: 367, dependent: 114, dependent conditional: 0, dependent unconditional: 114, unknown: 492, unknown conditional: 0, unknown unconditional: 492] , Statistics on independence cache: Total cache size (in pairs): 43, Positive cache size: 30, Positive conditional cache size: 0, Positive unconditional cache size: 30, Negative cache size: 13, Negative conditional cache size: 0, Negative unconditional cache size: 13, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - CounterExampleResult [Line: 19]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L681] 0 int g = 0; [L682] 0 pthread_mutex_t A = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L683] 0 pthread_mutex_t D = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L693] 0 pthread_t id[2]; [L694] 0 int asdf=0; VAL [A={3:0}, D={4:0}, asdf=0, g=0, id={5:0}] [L694] COND TRUE 0 asdf<2 [L694] FCALL, FORK 0 pthread_create(&id[asdf], ((void *)0), t_fun, ((void *)0)) VAL [A={3:0}, D={4:0}, arg={0:0}, asdf=0, g=0, id={5:0}, pthread_create(&id[asdf], ((void *)0), t_fun, ((void *)0))=-1] [L694] 0 asdf++ VAL [A={3:0}, D={4:0}, arg={0:0}, asdf=1, g=0, id={5:0}] [L694] COND TRUE 0 asdf<2 [L687] 1 g = 17 VAL [A={3:0}, D={4:0}, arg={0:0}, arg={0:0}, g=17] [L694] FCALL, FORK 0 pthread_create(&id[asdf], ((void *)0), t_fun, ((void *)0)) VAL [A={3:0}, D={4:0}, arg={0:0}, arg={0:0}, asdf=1, g=17, id={5:0}, pthread_create(&id[asdf], ((void *)0), t_fun, ((void *)0))=0] [L694] 0 asdf++ VAL [A={3:0}, D={4:0}, arg={0:0}, arg={0:0}, asdf=2, g=17, id={5:0}] [L690] 1 return ((void *)0); [L694] COND FALSE 0 !(asdf<2) [L698] CALL 0 __VERIFIER_assert(g == 0) [L19] COND TRUE 0 !(cond) [L19] 0 reach_error() VAL [A={3:0}, D={4:0}, \old(cond)=0, \result={0:0}, arg={0:0}, arg={0:0}, cond=0, g=17] - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 77 locations, 2 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: 3.0s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 46 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 29 mSDsluCounter, 1 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 7 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 53 IncrementalHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 7 mSolverCounterUnsat, 1 mSDtfsCounter, 53 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred in iteration=1, InterpolantAutomatonStates: 7, 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, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 21 NumberOfCodeBlocks, 21 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 25 ConstructedInterpolants, 0 QuantifiedInterpolants, 51 SizeOfPredicates, 0 NumberOfNonLiveVariables, 116 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 4 InterpolantComputations, 1 PerfectInterpolantSequences, 0/3 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 - StatisticsResult: Ultimate Automizer benchmark data with 2 thread instances CFG has 4 procedures, 88 locations, 2 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: 2.9s, OverallIterations: 6, TraceHistogramMax: 2, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.7s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 243 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 142 mSDsluCounter, 8 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 41 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 349 IncrementalHoareTripleChecker+Invalid, 390 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 41 mSolverCounterUnsat, 8 mSDtfsCounter, 349 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 31 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=100occurred in iteration=5, InterpolantAutomatonStates: 18, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 86 NumberOfCodeBlocks, 86 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 70 ConstructedInterpolants, 0 QuantifiedInterpolants, 257 SizeOfPredicates, 0 NumberOfNonLiveVariables, 117 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 7 InterpolantComputations, 4 PerfectInterpolantSequences, 18/21 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 - StatisticsResult: Ultimate Automizer benchmark data for thread instance sufficiency with 1 thread instances CFG has 3 procedures, 77 locations, 2 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: 2.2s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.1s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=0, InterpolantAutomatonStates: 0, 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, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-08-04 04:33:59,640 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...