/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/pthread_triangular-longer-2_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-04 07:58:56,797 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-04 07:58:56,862 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-04 07:58:56,871 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-04 07:58:56,871 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-04 07:58:56,872 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-04 07:58:56,872 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-04 07:58:56,907 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-04 07:58:56,908 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-04 07:58:56,912 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-04 07:58:56,912 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-04 07:58:56,912 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-04 07:58:56,913 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-04 07:58:56,915 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-04 07:58:56,915 INFO L153 SettingsManager]: * Use SBE=true [2023-08-04 07:58:56,915 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-04 07:58:56,915 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-04 07:58:56,915 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-04 07:58:56,916 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-04 07:58:56,916 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-04 07:58:56,916 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-04 07:58:56,917 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-04 07:58:56,917 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-04 07:58:56,917 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-04 07:58:56,918 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-04 07:58:56,919 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-04 07:58:56,919 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-04 07:58:56,919 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-04 07:58:56,920 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-04 07:58:56,920 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-04 07:58:56,921 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 07:58:56,921 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-04 07:58:56,921 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-04 07:58:56,921 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-04 07:58:56,921 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-04 07:58:56,922 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-04 07:58:56,922 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-04 07:58:56,922 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-04 07:58:56,922 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-04 07:58:56,922 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-04 07:58:56,922 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-04 07:58:56,923 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST [2023-08-04 07:58:57,098 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-04 07:58:57,114 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-04 07:58:57,116 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-04 07:58:57,117 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-04 07:58:57,117 INFO L274 PluginConnector]: CDTParser initialized [2023-08-04 07:58:57,118 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/pthread_triangular-longer-2_bound2.i [2023-08-04 07:58:58,240 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-04 07:58:58,450 INFO L384 CDTParser]: Found 1 translation units. [2023-08-04 07:58:58,451 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/pthread_triangular-longer-2_bound2.i [2023-08-04 07:58:58,462 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5d59bdeda/ff9768c0393f48329b571456ae2099b6/FLAG0d94f0d93 [2023-08-04 07:58:58,472 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5d59bdeda/ff9768c0393f48329b571456ae2099b6 [2023-08-04 07:58:58,474 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-04 07:58:58,475 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-04 07:58:58,476 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-04 07:58:58,476 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-04 07:58:58,478 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-04 07:58:58,479 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 07:58:58" (1/1) ... [2023-08-04 07:58:58,479 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51e2b9b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 07:58:58, skipping insertion in model container [2023-08-04 07:58:58,479 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 07:58:58" (1/1) ... [2023-08-04 07:58:58,516 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-04 07:58:58,735 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/pthread_triangular-longer-2_bound2.i[31047,31060] [2023-08-04 07:58:58,736 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 07:58:58,743 INFO L201 MainTranslator]: Completed pre-run [2023-08-04 07:58:58,759 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [245] [2023-08-04 07:58:58,760 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [245] [2023-08-04 07:58:58,775 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/pthread_triangular-longer-2_bound2.i[31047,31060] [2023-08-04 07:58:58,776 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 07:58:58,799 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-04 07:58:58,799 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-04 07:58:58,805 INFO L206 MainTranslator]: Completed translation [2023-08-04 07:58:58,806 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 07:58:58 WrapperNode [2023-08-04 07:58:58,806 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-04 07:58:58,807 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-04 07:58:58,807 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-04 07:58:58,807 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-04 07:58:58,813 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 07:58:58" (1/1) ... [2023-08-04 07:58:58,822 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 07:58:58" (1/1) ... [2023-08-04 07:58:58,838 INFO L138 Inliner]: procedures = 169, calls = 24, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 63 [2023-08-04 07:58:58,838 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-04 07:58:58,839 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-04 07:58:58,839 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-04 07:58:58,839 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-04 07:58:58,846 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 07:58:58" (1/1) ... [2023-08-04 07:58:58,846 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 07:58:58" (1/1) ... [2023-08-04 07:58:58,848 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 07:58:58" (1/1) ... [2023-08-04 07:58:58,848 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 07:58:58" (1/1) ... [2023-08-04 07:58:58,852 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 07:58:58" (1/1) ... [2023-08-04 07:58:58,855 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 07:58:58" (1/1) ... [2023-08-04 07:58:58,856 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 07:58:58" (1/1) ... [2023-08-04 07:58:58,857 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 07:58:58" (1/1) ... [2023-08-04 07:58:58,859 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-04 07:58:58,860 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-04 07:58:58,860 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-04 07:58:58,860 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-04 07:58:58,861 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 07:58:58" (1/1) ... [2023-08-04 07:58:58,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 07:58:58,878 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 07:58:58,921 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 07:58:58,935 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 07:58:58,956 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-08-04 07:58:58,956 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-08-04 07:58:58,956 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-08-04 07:58:58,956 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-08-04 07:58:58,956 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-04 07:58:58,958 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-04 07:58:58,958 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-04 07:58:58,958 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-04 07:58:58,959 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-04 07:58:58,959 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-04 07:58:58,959 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-04 07:58:58,959 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-04 07:58:58,959 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-04 07:58:58,960 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 07:58:59,045 INFO L236 CfgBuilder]: Building ICFG [2023-08-04 07:58:59,046 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-04 07:58:59,161 INFO L277 CfgBuilder]: Performing block encoding [2023-08-04 07:58:59,172 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-04 07:58:59,172 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-04 07:58:59,174 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 07:58:59 BoogieIcfgContainer [2023-08-04 07:58:59,174 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-04 07:58:59,176 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-04 07:58:59,176 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-04 07:58:59,178 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-04 07:58:59,179 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.08 07:58:58" (1/3) ... [2023-08-04 07:58:59,179 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25a527fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 07:58:59, skipping insertion in model container [2023-08-04 07:58:59,179 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 07:58:58" (2/3) ... [2023-08-04 07:58:59,179 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25a527fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 07:58:59, skipping insertion in model container [2023-08-04 07:58:59,179 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 07:58:59" (3/3) ... [2023-08-04 07:58:59,182 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread_triangular-longer-2_bound2.i [2023-08-04 07:58:59,189 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-04 07:58:59,197 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-04 07:58:59,198 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-04 07:58:59,198 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-04 07:58:59,240 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-04 07:58:59,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 78 places, 80 transitions, 170 flow [2023-08-04 07:58:59,324 INFO L124 PetriNetUnfolderBase]: 16/165 cut-off events. [2023-08-04 07:58:59,324 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 07:58:59,335 INFO L83 FinitePrefix]: Finished finitePrefix Result has 177 conditions, 165 events. 16/165 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 483 event pairs, 0 based on Foata normal form. 0/139 useless extension candidates. Maximal degree in co-relation 92. Up to 8 conditions per place. [2023-08-04 07:58:59,335 INFO L82 GeneralOperation]: Start removeDead. Operand has 78 places, 80 transitions, 170 flow [2023-08-04 07:58:59,339 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 78 places, 80 transitions, 170 flow [2023-08-04 07:58:59,342 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 07:58:59,349 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 80 transitions, 170 flow [2023-08-04 07:58:59,352 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 78 places, 80 transitions, 170 flow [2023-08-04 07:58:59,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 78 places, 80 transitions, 170 flow [2023-08-04 07:58:59,410 INFO L124 PetriNetUnfolderBase]: 16/165 cut-off events. [2023-08-04 07:58:59,410 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 07:58:59,411 INFO L83 FinitePrefix]: Finished finitePrefix Result has 177 conditions, 165 events. 16/165 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 483 event pairs, 0 based on Foata normal form. 0/139 useless extension candidates. Maximal degree in co-relation 92. Up to 8 conditions per place. [2023-08-04 07:58:59,413 INFO L119 LiptonReduction]: Number of co-enabled transitions 1694 [2023-08-04 07:59:01,025 INFO L134 LiptonReduction]: Checked pairs total: 1481 [2023-08-04 07:59:01,026 INFO L136 LiptonReduction]: Total number of compositions: 70 [2023-08-04 07:59:01,036 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-04 07:59:01,041 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;@758e818b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 07:59:01,041 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-04 07:59:01,044 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 07:59:01,044 INFO L124 PetriNetUnfolderBase]: 1/8 cut-off events. [2023-08-04 07:59:01,044 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 07:59:01,044 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 07:59:01,045 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-04 07:59:01,045 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 07:59:01,049 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 07:59:01,049 INFO L85 PathProgramCache]: Analyzing trace with hash 9912496, now seen corresponding path program 1 times [2023-08-04 07:59:01,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 07:59:01,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044982063] [2023-08-04 07:59:01,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 07:59:01,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 07:59:01,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 07:59:01,225 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 07:59:01,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 07:59:01,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044982063] [2023-08-04 07:59:01,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044982063] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 07:59:01,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 07:59:01,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 07:59:01,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720205020] [2023-08-04 07:59:01,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 07:59:01,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 07:59:01,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 07:59:01,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 07:59:01,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 07:59:01,271 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 150 [2023-08-04 07:59:01,274 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 20 transitions, 50 flow. Second operand has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 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 07:59:01,274 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 07:59:01,274 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 150 [2023-08-04 07:59:01,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 07:59:01,324 INFO L124 PetriNetUnfolderBase]: 124/210 cut-off events. [2023-08-04 07:59:01,324 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 07:59:01,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 432 conditions, 210 events. 124/210 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 587 event pairs, 30 based on Foata normal form. 0/139 useless extension candidates. Maximal degree in co-relation 414. Up to 199 conditions per place. [2023-08-04 07:59:01,326 INFO L140 encePairwiseOnDemand]: 146/150 looper letters, 17 selfloop transitions, 2 changer transitions 4/23 dead transitions. [2023-08-04 07:59:01,326 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 23 transitions, 98 flow [2023-08-04 07:59:01,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 07:59:01,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 07:59:01,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 227 transitions. [2023-08-04 07:59:01,336 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5044444444444445 [2023-08-04 07:59:01,336 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 227 transitions. [2023-08-04 07:59:01,337 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 227 transitions. [2023-08-04 07:59:01,337 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 07:59:01,339 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 227 transitions. [2023-08-04 07:59:01,341 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 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 07:59:01,344 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 150.0) internal successors, (600), 4 states have internal predecessors, (600), 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 07:59:01,344 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 150.0) internal successors, (600), 4 states have internal predecessors, (600), 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 07:59:01,346 INFO L175 Difference]: Start difference. First operand has 22 places, 20 transitions, 50 flow. Second operand 3 states and 227 transitions. [2023-08-04 07:59:01,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 23 transitions, 98 flow [2023-08-04 07:59:01,348 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 23 transitions, 98 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-04 07:59:01,349 INFO L231 Difference]: Finished difference. Result has 25 places, 16 transitions, 46 flow [2023-08-04 07:59:01,350 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=46, PETRI_PLACES=25, PETRI_TRANSITIONS=16} [2023-08-04 07:59:01,353 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 3 predicate places. [2023-08-04 07:59:01,353 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 16 transitions, 46 flow [2023-08-04 07:59:01,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 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 07:59:01,354 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 07:59:01,354 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-04 07:59:01,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-04 07:59:01,354 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 07:59:01,357 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 07:59:01,357 INFO L85 PathProgramCache]: Analyzing trace with hash -340795523, now seen corresponding path program 1 times [2023-08-04 07:59:01,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 07:59:01,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874892457] [2023-08-04 07:59:01,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 07:59:01,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 07:59:01,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 07:59:01,444 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 07:59:01,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 07:59:01,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874892457] [2023-08-04 07:59:01,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874892457] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 07:59:01,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [762992708] [2023-08-04 07:59:01,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 07:59:01,445 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 07:59:01,445 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 07:59:01,465 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 07:59:01,480 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 07:59:01,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 07:59:01,527 INFO L262 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 07:59:01,530 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 07:59:01,544 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-04 07:59:01,545 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 07:59:01,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [762992708] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 07:59:01,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 07:59:01,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-04 07:59:01,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405449795] [2023-08-04 07:59:01,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 07:59:01,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 07:59:01,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 07:59:01,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 07:59:01,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 07:59:01,562 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 150 [2023-08-04 07:59:01,563 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 16 transitions, 46 flow. Second operand has 3 states, 3 states have (on average 70.33333333333333) internal successors, (211), 3 states have internal predecessors, (211), 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 07:59:01,563 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 07:59:01,563 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 150 [2023-08-04 07:59:01,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 07:59:01,630 INFO L124 PetriNetUnfolderBase]: 97/159 cut-off events. [2023-08-04 07:59:01,631 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-04 07:59:01,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 342 conditions, 159 events. 97/159 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 385 event pairs, 28 based on Foata normal form. 0/115 useless extension candidates. Maximal degree in co-relation 327. Up to 127 conditions per place. [2023-08-04 07:59:01,635 INFO L140 encePairwiseOnDemand]: 147/150 looper letters, 20 selfloop transitions, 2 changer transitions 1/23 dead transitions. [2023-08-04 07:59:01,636 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 23 transitions, 106 flow [2023-08-04 07:59:01,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 07:59:01,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 07:59:01,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 228 transitions. [2023-08-04 07:59:01,645 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5066666666666667 [2023-08-04 07:59:01,645 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 228 transitions. [2023-08-04 07:59:01,645 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 228 transitions. [2023-08-04 07:59:01,647 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 07:59:01,647 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 228 transitions. [2023-08-04 07:59:01,648 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 76.0) internal successors, (228), 3 states have internal predecessors, (228), 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 07:59:01,650 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 150.0) internal successors, (600), 4 states have internal predecessors, (600), 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 07:59:01,651 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 150.0) internal successors, (600), 4 states have internal predecessors, (600), 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 07:59:01,652 INFO L175 Difference]: Start difference. First operand has 25 places, 16 transitions, 46 flow. Second operand 3 states and 228 transitions. [2023-08-04 07:59:01,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 23 transitions, 106 flow [2023-08-04 07:59:01,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 23 transitions, 102 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 07:59:01,654 INFO L231 Difference]: Finished difference. Result has 23 places, 16 transitions, 50 flow [2023-08-04 07:59:01,654 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=50, PETRI_PLACES=23, PETRI_TRANSITIONS=16} [2023-08-04 07:59:01,655 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 1 predicate places. [2023-08-04 07:59:01,655 INFO L495 AbstractCegarLoop]: Abstraction has has 23 places, 16 transitions, 50 flow [2023-08-04 07:59:01,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.33333333333333) internal successors, (211), 3 states have internal predecessors, (211), 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 07:59:01,655 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 07:59:01,655 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 07:59:01,673 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 07:59:01,862 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 07:59:01,863 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 07:59:01,863 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 07:59:01,863 INFO L85 PathProgramCache]: Analyzing trace with hash 668367625, now seen corresponding path program 1 times [2023-08-04 07:59:01,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 07:59:01,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421517135] [2023-08-04 07:59:01,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 07:59:01,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 07:59:01,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 07:59:01,906 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-04 07:59:01,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 07:59:01,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421517135] [2023-08-04 07:59:01,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421517135] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 07:59:01,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1431117701] [2023-08-04 07:59:01,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 07:59:01,907 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 07:59:01,907 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 07:59:01,908 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 07:59:01,935 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 07:59:01,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 07:59:01,973 INFO L262 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 07:59:01,974 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 07:59:01,994 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-04 07:59:01,995 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 07:59:02,008 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-04 07:59:02,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1431117701] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 07:59:02,008 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 07:59:02,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2023-08-04 07:59:02,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303422810] [2023-08-04 07:59:02,009 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 07:59:02,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-04 07:59:02,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 07:59:02,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-04 07:59:02,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-04 07:59:02,023 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 150 [2023-08-04 07:59:02,024 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 16 transitions, 50 flow. Second operand has 4 states, 4 states have (on average 69.5) internal successors, (278), 4 states have internal predecessors, (278), 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 07:59:02,024 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 07:59:02,024 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 150 [2023-08-04 07:59:02,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 07:59:02,040 INFO L124 PetriNetUnfolderBase]: 7/18 cut-off events. [2023-08-04 07:59:02,040 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-04 07:59:02,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48 conditions, 18 events. 7/18 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 21 event pairs, 0 based on Foata normal form. 3/18 useless extension candidates. Maximal degree in co-relation 41. Up to 12 conditions per place. [2023-08-04 07:59:02,041 INFO L140 encePairwiseOnDemand]: 147/150 looper letters, 0 selfloop transitions, 0 changer transitions 11/11 dead transitions. [2023-08-04 07:59:02,041 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 16 places, 11 transitions, 49 flow [2023-08-04 07:59:02,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 07:59:02,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 07:59:02,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 280 transitions. [2023-08-04 07:59:02,042 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2023-08-04 07:59:02,043 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 280 transitions. [2023-08-04 07:59:02,043 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 280 transitions. [2023-08-04 07:59:02,043 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 07:59:02,043 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 280 transitions. [2023-08-04 07:59:02,044 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 70.0) internal successors, (280), 4 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:59:02,045 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 150.0) internal successors, (750), 5 states have internal predecessors, (750), 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 07:59:02,046 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 150.0) internal successors, (750), 5 states have internal predecessors, (750), 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 07:59:02,046 INFO L175 Difference]: Start difference. First operand has 23 places, 16 transitions, 50 flow. Second operand 4 states and 280 transitions. [2023-08-04 07:59:02,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 16 places, 11 transitions, 49 flow [2023-08-04 07:59:02,046 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 15 places, 11 transitions, 47 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 07:59:02,047 INFO L231 Difference]: Finished difference. Result has 15 places, 0 transitions, 0 flow [2023-08-04 07:59:02,047 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, PETRI_DIFFERENCE_MINUEND_FLOW=17, PETRI_DIFFERENCE_MINUEND_PLACES=12, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=7, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=15, PETRI_TRANSITIONS=0} [2023-08-04 07:59:02,047 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, -7 predicate places. [2023-08-04 07:59:02,047 INFO L495 AbstractCegarLoop]: Abstraction has has 15 places, 0 transitions, 0 flow [2023-08-04 07:59:02,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 69.5) internal successors, (278), 4 states have internal predecessors, (278), 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 07:59:02,050 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-08-04 07:59:02,069 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-04 07:59:02,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-08-04 07:59:02,271 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-08-04 07:59:02,273 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE (1/2) [2023-08-04 07:59:02,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 78 places, 80 transitions, 170 flow [2023-08-04 07:59:02,303 INFO L124 PetriNetUnfolderBase]: 16/165 cut-off events. [2023-08-04 07:59:02,303 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 07:59:02,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 177 conditions, 165 events. 16/165 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 483 event pairs, 0 based on Foata normal form. 0/139 useless extension candidates. Maximal degree in co-relation 92. Up to 8 conditions per place. [2023-08-04 07:59:02,304 INFO L82 GeneralOperation]: Start removeDead. Operand has 78 places, 80 transitions, 170 flow [2023-08-04 07:59:02,305 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 78 places, 80 transitions, 170 flow [2023-08-04 07:59:02,305 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 07:59:02,305 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 80 transitions, 170 flow [2023-08-04 07:59:02,305 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 78 places, 80 transitions, 170 flow [2023-08-04 07:59:02,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 78 places, 80 transitions, 170 flow [2023-08-04 07:59:02,332 INFO L124 PetriNetUnfolderBase]: 16/165 cut-off events. [2023-08-04 07:59:02,332 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 07:59:02,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 177 conditions, 165 events. 16/165 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 483 event pairs, 0 based on Foata normal form. 0/139 useless extension candidates. Maximal degree in co-relation 92. Up to 8 conditions per place. [2023-08-04 07:59:02,343 INFO L119 LiptonReduction]: Number of co-enabled transitions 1694 [2023-08-04 07:59:03,622 INFO L134 LiptonReduction]: Checked pairs total: 1505 [2023-08-04 07:59:03,622 INFO L136 LiptonReduction]: Total number of compositions: 70 [2023-08-04 07:59:03,623 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-04 07:59:03,624 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;@758e818b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 07:59:03,624 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-08-04 07:59:03,627 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 07:59:03,627 INFO L124 PetriNetUnfolderBase]: 5/28 cut-off events. [2023-08-04 07:59:03,627 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 07:59:03,627 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 07:59:03,627 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-04 07:59:03,627 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-04 07:59:03,628 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 07:59:03,628 INFO L85 PathProgramCache]: Analyzing trace with hash -1238742026, now seen corresponding path program 1 times [2023-08-04 07:59:03,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 07:59:03,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063025777] [2023-08-04 07:59:03,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 07:59:03,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 07:59:03,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 07:59:03,670 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-04 07:59:03,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 07:59:03,705 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-04 07:59:03,705 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-04 07:59:03,705 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-08-04 07:59:03,706 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-08-04 07:59:03,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-04 07:59:03,706 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-04 07:59:03,707 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (2/2) [2023-08-04 07:59:03,707 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-04 07:59:03,707 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-04 07:59:03,720 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-04 07:59:03,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 102 places, 104 transitions, 232 flow [2023-08-04 07:59:03,748 INFO L124 PetriNetUnfolderBase]: 37/358 cut-off events. [2023-08-04 07:59:03,749 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-08-04 07:59:03,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 391 conditions, 358 events. 37/358 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1423 event pairs, 0 based on Foata normal form. 0/300 useless extension candidates. Maximal degree in co-relation 257. Up to 18 conditions per place. [2023-08-04 07:59:03,750 INFO L82 GeneralOperation]: Start removeDead. Operand has 102 places, 104 transitions, 232 flow [2023-08-04 07:59:03,752 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 102 places, 104 transitions, 232 flow [2023-08-04 07:59:03,752 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 07:59:03,752 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 102 places, 104 transitions, 232 flow [2023-08-04 07:59:03,752 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 102 places, 104 transitions, 232 flow [2023-08-04 07:59:03,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 102 places, 104 transitions, 232 flow [2023-08-04 07:59:03,778 INFO L124 PetriNetUnfolderBase]: 37/358 cut-off events. [2023-08-04 07:59:03,778 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-08-04 07:59:03,779 INFO L83 FinitePrefix]: Finished finitePrefix Result has 391 conditions, 358 events. 37/358 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1423 event pairs, 0 based on Foata normal form. 0/300 useless extension candidates. Maximal degree in co-relation 257. Up to 18 conditions per place. [2023-08-04 07:59:03,785 INFO L119 LiptonReduction]: Number of co-enabled transitions 4444 [2023-08-04 07:59:05,624 INFO L134 LiptonReduction]: Checked pairs total: 3916 [2023-08-04 07:59:05,624 INFO L136 LiptonReduction]: Total number of compositions: 86 [2023-08-04 07:59:05,626 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-04 07:59:05,627 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;@758e818b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 07:59:05,627 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-04 07:59:05,629 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 07:59:05,629 INFO L124 PetriNetUnfolderBase]: 1/8 cut-off events. [2023-08-04 07:59:05,629 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 07:59:05,629 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 07:59:05,629 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-04 07:59:05,629 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 07:59:05,629 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 07:59:05,630 INFO L85 PathProgramCache]: Analyzing trace with hash 18650122, now seen corresponding path program 1 times [2023-08-04 07:59:05,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 07:59:05,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524880025] [2023-08-04 07:59:05,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 07:59:05,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 07:59:05,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 07:59:05,663 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 07:59:05,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 07:59:05,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524880025] [2023-08-04 07:59:05,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524880025] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 07:59:05,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 07:59:05,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 07:59:05,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243663208] [2023-08-04 07:59:05,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 07:59:05,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 07:59:05,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 07:59:05,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 07:59:05,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 07:59:05,673 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 190 [2023-08-04 07:59:05,674 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 30 transitions, 84 flow. Second operand has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:59:05,674 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 07:59:05,674 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 190 [2023-08-04 07:59:05,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 07:59:05,891 INFO L124 PetriNetUnfolderBase]: 3088/4138 cut-off events. [2023-08-04 07:59:05,891 INFO L125 PetriNetUnfolderBase]: For 138/138 co-relation queries the response was YES. [2023-08-04 07:59:05,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8415 conditions, 4138 events. 3088/4138 cut-off events. For 138/138 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 15410 event pairs, 1386 based on Foata normal form. 0/2737 useless extension candidates. Maximal degree in co-relation 2694. Up to 4045 conditions per place. [2023-08-04 07:59:05,906 INFO L140 encePairwiseOnDemand]: 186/190 looper letters, 27 selfloop transitions, 2 changer transitions 3/34 dead transitions. [2023-08-04 07:59:05,906 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 34 transitions, 152 flow [2023-08-04 07:59:05,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 07:59:05,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 07:59:05,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 296 transitions. [2023-08-04 07:59:05,908 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.519298245614035 [2023-08-04 07:59:05,908 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 296 transitions. [2023-08-04 07:59:05,908 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 296 transitions. [2023-08-04 07:59:05,908 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 07:59:05,908 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 296 transitions. [2023-08-04 07:59:05,909 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 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 07:59:05,910 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 190.0) internal successors, (760), 4 states have internal predecessors, (760), 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 07:59:05,910 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 190.0) internal successors, (760), 4 states have internal predecessors, (760), 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 07:59:05,910 INFO L175 Difference]: Start difference. First operand has 34 places, 30 transitions, 84 flow. Second operand 3 states and 296 transitions. [2023-08-04 07:59:05,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 34 transitions, 152 flow [2023-08-04 07:59:05,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 34 transitions, 148 flow, removed 2 selfloop flow, removed 0 redundant places. [2023-08-04 07:59:05,913 INFO L231 Difference]: Finished difference. Result has 37 places, 27 transitions, 80 flow [2023-08-04 07:59:05,914 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=80, PETRI_PLACES=37, PETRI_TRANSITIONS=27} [2023-08-04 07:59:05,916 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 3 predicate places. [2023-08-04 07:59:05,916 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 27 transitions, 80 flow [2023-08-04 07:59:05,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:59:05,916 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 07:59:05,916 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 07:59:05,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-04 07:59:05,917 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 07:59:05,917 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 07:59:05,917 INFO L85 PathProgramCache]: Analyzing trace with hash 1203386416, now seen corresponding path program 1 times [2023-08-04 07:59:05,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 07:59:05,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321321736] [2023-08-04 07:59:05,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 07:59:05,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 07:59:05,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 07:59:05,980 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 07:59:05,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 07:59:05,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321321736] [2023-08-04 07:59:05,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321321736] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 07:59:05,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1938802881] [2023-08-04 07:59:05,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 07:59:05,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 07:59:05,981 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 07:59:05,998 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 07:59:05,999 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-04 07:59:06,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 07:59:06,050 INFO L262 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 07:59:06,051 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 07:59:06,057 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-04 07:59:06,057 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 07:59:06,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1938802881] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 07:59:06,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 07:59:06,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-04 07:59:06,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260909077] [2023-08-04 07:59:06,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 07:59:06,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 07:59:06,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 07:59:06,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 07:59:06,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 07:59:06,070 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 190 [2023-08-04 07:59:06,070 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 27 transitions, 80 flow. Second operand has 3 states, 3 states have (on average 90.33333333333333) internal successors, (271), 3 states have internal predecessors, (271), 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 07:59:06,070 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 07:59:06,070 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 190 [2023-08-04 07:59:06,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 07:59:06,242 INFO L124 PetriNetUnfolderBase]: 2521/3355 cut-off events. [2023-08-04 07:59:06,242 INFO L125 PetriNetUnfolderBase]: For 63/63 co-relation queries the response was YES. [2023-08-04 07:59:06,245 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6837 conditions, 3355 events. 2521/3355 cut-off events. For 63/63 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 11665 event pairs, 1120 based on Foata normal form. 0/2323 useless extension candidates. Maximal degree in co-relation 6801. Up to 3127 conditions per place. [2023-08-04 07:59:06,256 INFO L140 encePairwiseOnDemand]: 187/190 looper letters, 34 selfloop transitions, 2 changer transitions 0/38 dead transitions. [2023-08-04 07:59:06,256 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 38 transitions, 174 flow [2023-08-04 07:59:06,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 07:59:06,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 07:59:06,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 300 transitions. [2023-08-04 07:59:06,258 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5263157894736842 [2023-08-04 07:59:06,258 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 300 transitions. [2023-08-04 07:59:06,258 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 300 transitions. [2023-08-04 07:59:06,258 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 07:59:06,259 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 300 transitions. [2023-08-04 07:59:06,259 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 100.0) internal successors, (300), 3 states have internal predecessors, (300), 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 07:59:06,260 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 190.0) internal successors, (760), 4 states have internal predecessors, (760), 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 07:59:06,261 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 190.0) internal successors, (760), 4 states have internal predecessors, (760), 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 07:59:06,261 INFO L175 Difference]: Start difference. First operand has 37 places, 27 transitions, 80 flow. Second operand 3 states and 300 transitions. [2023-08-04 07:59:06,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 38 transitions, 174 flow [2023-08-04 07:59:06,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 38 transitions, 172 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 07:59:06,263 INFO L231 Difference]: Finished difference. Result has 36 places, 28 transitions, 90 flow [2023-08-04 07:59:06,263 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=90, PETRI_PLACES=36, PETRI_TRANSITIONS=28} [2023-08-04 07:59:06,264 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 2 predicate places. [2023-08-04 07:59:06,264 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 28 transitions, 90 flow [2023-08-04 07:59:06,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 90.33333333333333) internal successors, (271), 3 states have internal predecessors, (271), 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 07:59:06,265 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 07:59:06,265 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 07:59:06,275 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-04 07:59:06,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 07:59:06,469 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 07:59:06,470 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 07:59:06,470 INFO L85 PathProgramCache]: Analyzing trace with hash 127965763, now seen corresponding path program 1 times [2023-08-04 07:59:06,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 07:59:06,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948087336] [2023-08-04 07:59:06,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 07:59:06,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 07:59:06,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 07:59:06,495 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-04 07:59:06,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 07:59:06,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948087336] [2023-08-04 07:59:06,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948087336] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 07:59:06,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [528710550] [2023-08-04 07:59:06,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 07:59:06,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 07:59:06,496 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 07:59:06,499 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 07:59:06,510 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-04 07:59:06,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 07:59:06,565 INFO L262 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 07:59:06,566 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 07:59:06,578 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-04 07:59:06,578 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 07:59:06,593 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-04 07:59:06,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [528710550] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 07:59:06,593 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 07:59:06,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-04 07:59:06,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796171143] [2023-08-04 07:59:06,594 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 07:59:06,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 07:59:06,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 07:59:06,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 07:59:06,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 07:59:06,607 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 190 [2023-08-04 07:59:06,608 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 28 transitions, 90 flow. Second operand has 5 states, 5 states have (on average 89.8) internal successors, (449), 5 states have internal predecessors, (449), 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 07:59:06,608 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 07:59:06,608 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 190 [2023-08-04 07:59:06,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 07:59:06,748 INFO L124 PetriNetUnfolderBase]: 2044/2680 cut-off events. [2023-08-04 07:59:06,748 INFO L125 PetriNetUnfolderBase]: For 270/270 co-relation queries the response was YES. [2023-08-04 07:59:06,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5713 conditions, 2680 events. 2044/2680 cut-off events. For 270/270 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 8666 event pairs, 564 based on Foata normal form. 3/1965 useless extension candidates. Maximal degree in co-relation 2272. Up to 2575 conditions per place. [2023-08-04 07:59:06,759 INFO L140 encePairwiseOnDemand]: 186/190 looper letters, 33 selfloop transitions, 3 changer transitions 1/39 dead transitions. [2023-08-04 07:59:06,759 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 39 transitions, 186 flow [2023-08-04 07:59:06,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 07:59:06,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 07:59:06,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 385 transitions. [2023-08-04 07:59:06,761 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.506578947368421 [2023-08-04 07:59:06,761 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 385 transitions. [2023-08-04 07:59:06,761 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 385 transitions. [2023-08-04 07:59:06,761 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 07:59:06,761 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 385 transitions. [2023-08-04 07:59:06,762 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 96.25) internal successors, (385), 4 states have internal predecessors, (385), 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 07:59:06,763 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 190.0) internal successors, (950), 5 states have internal predecessors, (950), 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 07:59:06,763 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 190.0) internal successors, (950), 5 states have internal predecessors, (950), 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 07:59:06,763 INFO L175 Difference]: Start difference. First operand has 36 places, 28 transitions, 90 flow. Second operand 4 states and 385 transitions. [2023-08-04 07:59:06,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 39 transitions, 186 flow [2023-08-04 07:59:06,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 39 transitions, 184 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 07:59:06,765 INFO L231 Difference]: Finished difference. Result has 40 places, 28 transitions, 102 flow [2023-08-04 07:59:06,765 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=102, PETRI_PLACES=40, PETRI_TRANSITIONS=28} [2023-08-04 07:59:06,765 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 6 predicate places. [2023-08-04 07:59:06,765 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 28 transitions, 102 flow [2023-08-04 07:59:06,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 89.8) internal successors, (449), 5 states have internal predecessors, (449), 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 07:59:06,766 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 07:59:06,766 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 07:59:06,789 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-04 07:59:06,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 07:59:06,971 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 07:59:06,971 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 07:59:06,971 INFO L85 PathProgramCache]: Analyzing trace with hash 785131912, now seen corresponding path program 1 times [2023-08-04 07:59:06,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 07:59:06,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374707687] [2023-08-04 07:59:06,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 07:59:06,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 07:59:06,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 07:59:07,015 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-04 07:59:07,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 07:59:07,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374707687] [2023-08-04 07:59:07,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374707687] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 07:59:07,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1775397657] [2023-08-04 07:59:07,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 07:59:07,016 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 07:59:07,016 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 07:59:07,021 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 07:59:07,053 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-04 07:59:07,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 07:59:07,085 INFO L262 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 07:59:07,086 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 07:59:07,101 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-04 07:59:07,101 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 07:59:07,118 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-04 07:59:07,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1775397657] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 07:59:07,118 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 07:59:07,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-04 07:59:07,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272335277] [2023-08-04 07:59:07,118 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 07:59:07,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 07:59:07,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 07:59:07,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 07:59:07,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 07:59:07,130 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 190 [2023-08-04 07:59:07,131 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 28 transitions, 102 flow. Second operand has 5 states, 5 states have (on average 90.0) internal successors, (450), 5 states have internal predecessors, (450), 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 07:59:07,131 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 07:59:07,131 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 190 [2023-08-04 07:59:07,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 07:59:07,325 INFO L124 PetriNetUnfolderBase]: 1864/2437 cut-off events. [2023-08-04 07:59:07,325 INFO L125 PetriNetUnfolderBase]: For 252/252 co-relation queries the response was YES. [2023-08-04 07:59:07,328 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5210 conditions, 2437 events. 1864/2437 cut-off events. For 252/252 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 7598 event pairs, 400 based on Foata normal form. 27/1806 useless extension candidates. Maximal degree in co-relation 2059. Up to 1282 conditions per place. [2023-08-04 07:59:07,335 INFO L140 encePairwiseOnDemand]: 186/190 looper letters, 45 selfloop transitions, 3 changer transitions 1/51 dead transitions. [2023-08-04 07:59:07,335 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 51 transitions, 246 flow [2023-08-04 07:59:07,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 07:59:07,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 07:59:07,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 397 transitions. [2023-08-04 07:59:07,338 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5223684210526316 [2023-08-04 07:59:07,338 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 397 transitions. [2023-08-04 07:59:07,338 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 397 transitions. [2023-08-04 07:59:07,338 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 07:59:07,338 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 397 transitions. [2023-08-04 07:59:07,339 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 99.25) internal successors, (397), 4 states have internal predecessors, (397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:59:07,340 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 190.0) internal successors, (950), 5 states have internal predecessors, (950), 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 07:59:07,340 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 190.0) internal successors, (950), 5 states have internal predecessors, (950), 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 07:59:07,340 INFO L175 Difference]: Start difference. First operand has 40 places, 28 transitions, 102 flow. Second operand 4 states and 397 transitions. [2023-08-04 07:59:07,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 51 transitions, 246 flow [2023-08-04 07:59:07,342 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 51 transitions, 239 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-04 07:59:07,343 INFO L231 Difference]: Finished difference. Result has 42 places, 28 transitions, 109 flow [2023-08-04 07:59:07,343 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=95, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=109, PETRI_PLACES=42, PETRI_TRANSITIONS=28} [2023-08-04 07:59:07,344 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 8 predicate places. [2023-08-04 07:59:07,344 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 28 transitions, 109 flow [2023-08-04 07:59:07,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 90.0) internal successors, (450), 5 states have internal predecessors, (450), 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 07:59:07,345 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 07:59:07,345 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 07:59:07,365 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-08-04 07:59:07,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 07:59:07,550 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 07:59:07,550 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 07:59:07,550 INFO L85 PathProgramCache]: Analyzing trace with hash 1194866460, now seen corresponding path program 1 times [2023-08-04 07:59:07,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 07:59:07,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625089471] [2023-08-04 07:59:07,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 07:59:07,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 07:59:07,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 07:59:07,695 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-04 07:59:07,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 07:59:07,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625089471] [2023-08-04 07:59:07,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625089471] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 07:59:07,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 07:59:07,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 07:59:07,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360886371] [2023-08-04 07:59:07,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 07:59:07,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-04 07:59:07,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 07:59:07,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-04 07:59:07,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-04 07:59:07,717 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 190 [2023-08-04 07:59:07,718 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 28 transitions, 109 flow. Second operand has 4 states, 4 states have (on average 87.0) internal successors, (348), 4 states have internal predecessors, (348), 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 07:59:07,718 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 07:59:07,718 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 190 [2023-08-04 07:59:07,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 07:59:07,947 INFO L124 PetriNetUnfolderBase]: 2458/3211 cut-off events. [2023-08-04 07:59:07,947 INFO L125 PetriNetUnfolderBase]: For 1828/1828 co-relation queries the response was YES. [2023-08-04 07:59:07,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7531 conditions, 3211 events. 2458/3211 cut-off events. For 1828/1828 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 11096 event pairs, 622 based on Foata normal form. 81/2379 useless extension candidates. Maximal degree in co-relation 2953. Up to 1774 conditions per place. [2023-08-04 07:59:07,967 INFO L140 encePairwiseOnDemand]: 185/190 looper letters, 49 selfloop transitions, 6 changer transitions 0/57 dead transitions. [2023-08-04 07:59:07,967 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 57 transitions, 299 flow [2023-08-04 07:59:07,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 07:59:07,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 07:59:07,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 389 transitions. [2023-08-04 07:59:07,969 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5118421052631579 [2023-08-04 07:59:07,969 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 389 transitions. [2023-08-04 07:59:07,969 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 389 transitions. [2023-08-04 07:59:07,969 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 07:59:07,969 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 389 transitions. [2023-08-04 07:59:07,970 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 97.25) internal successors, (389), 4 states have internal predecessors, (389), 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 07:59:07,971 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 190.0) internal successors, (950), 5 states have internal predecessors, (950), 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 07:59:07,971 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 190.0) internal successors, (950), 5 states have internal predecessors, (950), 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 07:59:07,971 INFO L175 Difference]: Start difference. First operand has 42 places, 28 transitions, 109 flow. Second operand 4 states and 389 transitions. [2023-08-04 07:59:07,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 57 transitions, 299 flow [2023-08-04 07:59:07,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 57 transitions, 287 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-08-04 07:59:07,975 INFO L231 Difference]: Finished difference. Result has 44 places, 33 transitions, 143 flow [2023-08-04 07:59:07,975 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=143, PETRI_PLACES=44, PETRI_TRANSITIONS=33} [2023-08-04 07:59:07,976 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 10 predicate places. [2023-08-04 07:59:07,976 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 33 transitions, 143 flow [2023-08-04 07:59:07,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 87.0) internal successors, (348), 4 states have internal predecessors, (348), 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 07:59:07,976 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 07:59:07,976 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 07:59:07,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-04 07:59:07,976 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 07:59:07,977 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 07:59:07,977 INFO L85 PathProgramCache]: Analyzing trace with hash 1601358351, now seen corresponding path program 1 times [2023-08-04 07:59:07,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 07:59:07,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810286317] [2023-08-04 07:59:07,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 07:59:07,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 07:59:07,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 07:59:08,094 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-04 07:59:08,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 07:59:08,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810286317] [2023-08-04 07:59:08,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810286317] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 07:59:08,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [830707712] [2023-08-04 07:59:08,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 07:59:08,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 07:59:08,096 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 07:59:08,105 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 07:59:08,106 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-04 07:59:08,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 07:59:08,173 INFO L262 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-04 07:59:08,174 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 07:59:08,215 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-04 07:59:08,215 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 07:59:08,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [830707712] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 07:59:08,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 07:59:08,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-08-04 07:59:08,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102530554] [2023-08-04 07:59:08,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 07:59:08,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 07:59:08,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 07:59:08,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 07:59:08,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-04 07:59:08,240 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 190 [2023-08-04 07:59:08,241 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 33 transitions, 143 flow. Second operand has 5 states, 5 states have (on average 85.8) internal successors, (429), 5 states have internal predecessors, (429), 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 07:59:08,241 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 07:59:08,241 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 190 [2023-08-04 07:59:08,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 07:59:08,656 INFO L124 PetriNetUnfolderBase]: 5048/6567 cut-off events. [2023-08-04 07:59:08,657 INFO L125 PetriNetUnfolderBase]: For 3963/3963 co-relation queries the response was YES. [2023-08-04 07:59:08,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16507 conditions, 6567 events. 5048/6567 cut-off events. For 3963/3963 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 26389 event pairs, 957 based on Foata normal form. 136/5655 useless extension candidates. Maximal degree in co-relation 11682. Up to 3332 conditions per place. [2023-08-04 07:59:08,680 INFO L140 encePairwiseOnDemand]: 183/190 looper letters, 84 selfloop transitions, 14 changer transitions 0/100 dead transitions. [2023-08-04 07:59:08,680 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 100 transitions, 562 flow [2023-08-04 07:59:08,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-04 07:59:08,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-04 07:59:08,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 586 transitions. [2023-08-04 07:59:08,682 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5140350877192983 [2023-08-04 07:59:08,682 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 586 transitions. [2023-08-04 07:59:08,682 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 586 transitions. [2023-08-04 07:59:08,682 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 07:59:08,682 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 586 transitions. [2023-08-04 07:59:08,683 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 97.66666666666667) internal successors, (586), 6 states have internal predecessors, (586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:59:08,684 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 190.0) internal successors, (1330), 7 states have internal predecessors, (1330), 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 07:59:08,685 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 190.0) internal successors, (1330), 7 states have internal predecessors, (1330), 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 07:59:08,685 INFO L175 Difference]: Start difference. First operand has 44 places, 33 transitions, 143 flow. Second operand 6 states and 586 transitions. [2023-08-04 07:59:08,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 100 transitions, 562 flow [2023-08-04 07:59:08,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 100 transitions, 562 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-04 07:59:08,689 INFO L231 Difference]: Finished difference. Result has 53 places, 48 transitions, 270 flow [2023-08-04 07:59:08,689 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=143, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=270, PETRI_PLACES=53, PETRI_TRANSITIONS=48} [2023-08-04 07:59:08,689 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 19 predicate places. [2023-08-04 07:59:08,689 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 48 transitions, 270 flow [2023-08-04 07:59:08,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 85.8) internal successors, (429), 5 states have internal predecessors, (429), 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 07:59:08,690 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 07:59:08,690 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 07:59:08,709 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-04 07:59:08,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 07:59:08,894 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 07:59:08,895 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 07:59:08,895 INFO L85 PathProgramCache]: Analyzing trace with hash 1601331381, now seen corresponding path program 2 times [2023-08-04 07:59:08,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 07:59:08,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094326948] [2023-08-04 07:59:08,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 07:59:08,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 07:59:08,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 07:59:08,985 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-04 07:59:08,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 07:59:08,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094326948] [2023-08-04 07:59:08,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094326948] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 07:59:08,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 07:59:08,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-04 07:59:08,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279797520] [2023-08-04 07:59:08,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 07:59:08,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 07:59:08,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 07:59:08,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 07:59:08,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 07:59:09,005 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 190 [2023-08-04 07:59:09,005 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 48 transitions, 270 flow. Second operand has 5 states, 5 states have (on average 85.8) internal successors, (429), 5 states have internal predecessors, (429), 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 07:59:09,005 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 07:59:09,005 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 190 [2023-08-04 07:59:09,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 07:59:09,504 INFO L124 PetriNetUnfolderBase]: 5360/7025 cut-off events. [2023-08-04 07:59:09,504 INFO L125 PetriNetUnfolderBase]: For 7626/7626 co-relation queries the response was YES. [2023-08-04 07:59:09,516 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20723 conditions, 7025 events. 5360/7025 cut-off events. For 7626/7626 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 28559 event pairs, 1219 based on Foata normal form. 136/7151 useless extension candidates. Maximal degree in co-relation 16259. Up to 3588 conditions per place. [2023-08-04 07:59:09,548 INFO L140 encePairwiseOnDemand]: 183/190 looper letters, 86 selfloop transitions, 23 changer transitions 0/111 dead transitions. [2023-08-04 07:59:09,549 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 111 transitions, 728 flow [2023-08-04 07:59:09,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-04 07:59:09,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-04 07:59:09,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 581 transitions. [2023-08-04 07:59:09,551 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5096491228070176 [2023-08-04 07:59:09,551 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 581 transitions. [2023-08-04 07:59:09,551 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 581 transitions. [2023-08-04 07:59:09,552 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 07:59:09,552 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 581 transitions. [2023-08-04 07:59:09,553 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 96.83333333333333) internal successors, (581), 6 states have internal predecessors, (581), 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 07:59:09,555 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 190.0) internal successors, (1330), 7 states have internal predecessors, (1330), 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 07:59:09,555 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 190.0) internal successors, (1330), 7 states have internal predecessors, (1330), 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 07:59:09,555 INFO L175 Difference]: Start difference. First operand has 53 places, 48 transitions, 270 flow. Second operand 6 states and 581 transitions. [2023-08-04 07:59:09,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 111 transitions, 728 flow [2023-08-04 07:59:09,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 111 transitions, 718 flow, removed 5 selfloop flow, removed 0 redundant places. [2023-08-04 07:59:09,583 INFO L231 Difference]: Finished difference. Result has 62 places, 61 transitions, 437 flow [2023-08-04 07:59:09,583 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=437, PETRI_PLACES=62, PETRI_TRANSITIONS=61} [2023-08-04 07:59:09,584 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 28 predicate places. [2023-08-04 07:59:09,584 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 61 transitions, 437 flow [2023-08-04 07:59:09,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 85.8) internal successors, (429), 5 states have internal predecessors, (429), 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 07:59:09,584 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 07:59:09,584 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 07:59:09,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-04 07:59:09,585 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 07:59:09,585 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 07:59:09,585 INFO L85 PathProgramCache]: Analyzing trace with hash -965252895, now seen corresponding path program 1 times [2023-08-04 07:59:09,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 07:59:09,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538426011] [2023-08-04 07:59:09,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 07:59:09,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 07:59:09,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 07:59:09,687 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-04 07:59:09,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 07:59:09,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538426011] [2023-08-04 07:59:09,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538426011] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 07:59:09,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [552003629] [2023-08-04 07:59:09,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 07:59:09,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 07:59:09,688 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 07:59:09,689 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 07:59:09,691 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-04 07:59:09,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 07:59:09,770 INFO L262 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-04 07:59:09,771 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 07:59:09,818 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-04 07:59:09,819 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 07:59:09,904 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-04 07:59:09,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [552003629] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 07:59:09,904 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 07:59:09,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2023-08-04 07:59:09,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188302855] [2023-08-04 07:59:09,904 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 07:59:09,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-04 07:59:09,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 07:59:09,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-04 07:59:09,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-08-04 07:59:09,945 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 190 [2023-08-04 07:59:09,946 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 61 transitions, 437 flow. Second operand has 10 states, 10 states have (on average 86.3) internal successors, (863), 10 states have internal predecessors, (863), 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 07:59:09,946 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 07:59:09,946 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 190 [2023-08-04 07:59:09,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 07:59:10,868 INFO L124 PetriNetUnfolderBase]: 8288/10783 cut-off events. [2023-08-04 07:59:10,868 INFO L125 PetriNetUnfolderBase]: For 22836/22836 co-relation queries the response was YES. [2023-08-04 07:59:10,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35297 conditions, 10783 events. 8288/10783 cut-off events. For 22836/22836 co-relation queries the response was YES. Maximal size of possible extension queue 395. Compared 46768 event pairs, 616 based on Foata normal form. 320/11093 useless extension candidates. Maximal degree in co-relation 30076. Up to 1675 conditions per place. [2023-08-04 07:59:10,935 INFO L140 encePairwiseOnDemand]: 183/190 looper letters, 171 selfloop transitions, 49 changer transitions 0/222 dead transitions. [2023-08-04 07:59:10,935 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 222 transitions, 1479 flow [2023-08-04 07:59:10,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-04 07:59:10,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-04 07:59:10,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1360 transitions. [2023-08-04 07:59:10,938 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5112781954887218 [2023-08-04 07:59:10,938 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1360 transitions. [2023-08-04 07:59:10,938 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1360 transitions. [2023-08-04 07:59:10,939 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 07:59:10,939 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1360 transitions. [2023-08-04 07:59:10,941 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 97.14285714285714) internal successors, (1360), 14 states have internal predecessors, (1360), 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 07:59:10,943 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 190.0) internal successors, (2850), 15 states have internal predecessors, (2850), 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 07:59:10,943 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 190.0) internal successors, (2850), 15 states have internal predecessors, (2850), 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 07:59:10,944 INFO L175 Difference]: Start difference. First operand has 62 places, 61 transitions, 437 flow. Second operand 14 states and 1360 transitions. [2023-08-04 07:59:10,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 222 transitions, 1479 flow [2023-08-04 07:59:10,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 222 transitions, 1458 flow, removed 4 selfloop flow, removed 1 redundant places. [2023-08-04 07:59:10,978 INFO L231 Difference]: Finished difference. Result has 82 places, 80 transitions, 772 flow [2023-08-04 07:59:10,978 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=416, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=772, PETRI_PLACES=82, PETRI_TRANSITIONS=80} [2023-08-04 07:59:10,978 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 48 predicate places. [2023-08-04 07:59:10,978 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 80 transitions, 772 flow [2023-08-04 07:59:10,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 86.3) internal successors, (863), 10 states have internal predecessors, (863), 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 07:59:10,979 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 07:59:10,979 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 07:59:10,997 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-04 07:59:11,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 07:59:11,183 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 07:59:11,184 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 07:59:11,184 INFO L85 PathProgramCache]: Analyzing trace with hash 50391111, now seen corresponding path program 2 times [2023-08-04 07:59:11,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 07:59:11,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056307759] [2023-08-04 07:59:11,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 07:59:11,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 07:59:11,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 07:59:11,293 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-04 07:59:11,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 07:59:11,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056307759] [2023-08-04 07:59:11,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056307759] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 07:59:11,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2049367201] [2023-08-04 07:59:11,294 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-04 07:59:11,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 07:59:11,294 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 07:59:11,295 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 07:59:11,336 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-04 07:59:11,401 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-04 07:59:11,402 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-04 07:59:11,402 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-04 07:59:11,404 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 07:59:11,450 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-04 07:59:11,451 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 07:59:11,525 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-04 07:59:11,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2049367201] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 07:59:11,525 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 07:59:11,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2023-08-04 07:59:11,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852253290] [2023-08-04 07:59:11,525 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 07:59:11,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-04 07:59:11,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 07:59:11,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-04 07:59:11,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2023-08-04 07:59:11,561 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 190 [2023-08-04 07:59:11,562 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 80 transitions, 772 flow. Second operand has 15 states, 15 states have (on average 85.53333333333333) internal successors, (1283), 15 states have internal predecessors, (1283), 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 07:59:11,562 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 07:59:11,562 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 190 [2023-08-04 07:59:11,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 07:59:13,577 INFO L124 PetriNetUnfolderBase]: 14416/18655 cut-off events. [2023-08-04 07:59:13,577 INFO L125 PetriNetUnfolderBase]: For 107650/107650 co-relation queries the response was YES. [2023-08-04 07:59:13,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79570 conditions, 18655 events. 14416/18655 cut-off events. For 107650/107650 co-relation queries the response was YES. Maximal size of possible extension queue 637. Compared 86233 event pairs, 643 based on Foata normal form. 320/18965 useless extension candidates. Maximal degree in co-relation 73043. Up to 2983 conditions per place. [2023-08-04 07:59:13,700 INFO L140 encePairwiseOnDemand]: 183/190 looper letters, 247 selfloop transitions, 86 changer transitions 0/335 dead transitions. [2023-08-04 07:59:13,700 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 335 transitions, 2942 flow [2023-08-04 07:59:13,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-08-04 07:59:13,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-08-04 07:59:13,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1946 transitions. [2023-08-04 07:59:13,705 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5121052631578947 [2023-08-04 07:59:13,705 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1946 transitions. [2023-08-04 07:59:13,705 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1946 transitions. [2023-08-04 07:59:13,705 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 07:59:13,706 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1946 transitions. [2023-08-04 07:59:13,708 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 97.3) internal successors, (1946), 20 states have internal predecessors, (1946), 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 07:59:13,712 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 190.0) internal successors, (3990), 21 states have internal predecessors, (3990), 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 07:59:13,712 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 190.0) internal successors, (3990), 21 states have internal predecessors, (3990), 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 07:59:13,712 INFO L175 Difference]: Start difference. First operand has 82 places, 80 transitions, 772 flow. Second operand 20 states and 1946 transitions. [2023-08-04 07:59:13,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 335 transitions, 2942 flow [2023-08-04 07:59:14,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 335 transitions, 2708 flow, removed 88 selfloop flow, removed 8 redundant places. [2023-08-04 07:59:14,417 INFO L231 Difference]: Finished difference. Result has 103 places, 117 transitions, 1378 flow [2023-08-04 07:59:14,417 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=622, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1378, PETRI_PLACES=103, PETRI_TRANSITIONS=117} [2023-08-04 07:59:14,417 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 69 predicate places. [2023-08-04 07:59:14,417 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 117 transitions, 1378 flow [2023-08-04 07:59:14,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 85.53333333333333) internal successors, (1283), 15 states have internal predecessors, (1283), 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 07:59:14,418 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 07:59:14,418 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 07:59:14,423 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-08-04 07:59:14,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-08-04 07:59:14,623 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 07:59:14,623 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 07:59:14,624 INFO L85 PathProgramCache]: Analyzing trace with hash -1346769123, now seen corresponding path program 3 times [2023-08-04 07:59:14,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 07:59:14,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778602476] [2023-08-04 07:59:14,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 07:59:14,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 07:59:14,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 07:59:14,758 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-04 07:59:14,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 07:59:14,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778602476] [2023-08-04 07:59:14,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778602476] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 07:59:14,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1225381408] [2023-08-04 07:59:14,758 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-04 07:59:14,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 07:59:14,758 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 07:59:14,759 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 07:59:14,761 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-04 07:59:14,826 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-08-04 07:59:14,826 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-04 07:59:14,826 INFO L262 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 13 conjunts are in the unsatisfiable core [2023-08-04 07:59:14,827 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 07:59:14,862 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-04 07:59:14,862 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 07:59:14,981 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-04 07:59:14,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1225381408] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 07:59:14,981 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 07:59:14,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2023-08-04 07:59:14,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983755228] [2023-08-04 07:59:14,981 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 07:59:14,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-04 07:59:14,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 07:59:14,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-04 07:59:14,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=260, Unknown=0, NotChecked=0, Total=342 [2023-08-04 07:59:15,034 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 190 [2023-08-04 07:59:15,035 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 117 transitions, 1378 flow. Second operand has 19 states, 19 states have (on average 85.21052631578948) internal successors, (1619), 19 states have internal predecessors, (1619), 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 07:59:15,035 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 07:59:15,035 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 190 [2023-08-04 07:59:15,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 07:59:18,507 INFO L124 PetriNetUnfolderBase]: 21392/27649 cut-off events. [2023-08-04 07:59:18,507 INFO L125 PetriNetUnfolderBase]: For 371941/371941 co-relation queries the response was YES. [2023-08-04 07:59:18,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 148061 conditions, 27649 events. 21392/27649 cut-off events. For 371941/371941 co-relation queries the response was YES. Maximal size of possible extension queue 730. Compared 129595 event pairs, 1162 based on Foata normal form. 512/28143 useless extension candidates. Maximal degree in co-relation 139031. Up to 4111 conditions per place. [2023-08-04 07:59:18,738 INFO L140 encePairwiseOnDemand]: 183/190 looper letters, 331 selfloop transitions, 124 changer transitions 0/457 dead transitions. [2023-08-04 07:59:18,739 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 457 transitions, 5086 flow [2023-08-04 07:59:18,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-08-04 07:59:18,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2023-08-04 07:59:18,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 2621 transitions. [2023-08-04 07:59:18,748 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.510916179337232 [2023-08-04 07:59:18,748 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 2621 transitions. [2023-08-04 07:59:18,748 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 2621 transitions. [2023-08-04 07:59:18,749 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 07:59:18,749 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 2621 transitions. [2023-08-04 07:59:18,752 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 97.07407407407408) internal successors, (2621), 27 states have internal predecessors, (2621), 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 07:59:18,780 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 190.0) internal successors, (5320), 28 states have internal predecessors, (5320), 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 07:59:18,782 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 190.0) internal successors, (5320), 28 states have internal predecessors, (5320), 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 07:59:18,782 INFO L175 Difference]: Start difference. First operand has 103 places, 117 transitions, 1378 flow. Second operand 27 states and 2621 transitions. [2023-08-04 07:59:18,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 457 transitions, 5086 flow [2023-08-04 07:59:21,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 457 transitions, 4560 flow, removed 245 selfloop flow, removed 5 redundant places. [2023-08-04 07:59:21,141 INFO L231 Difference]: Finished difference. Result has 139 places, 159 transitions, 2302 flow [2023-08-04 07:59:21,141 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=1080, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=2302, PETRI_PLACES=139, PETRI_TRANSITIONS=159} [2023-08-04 07:59:21,141 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 105 predicate places. [2023-08-04 07:59:21,141 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 159 transitions, 2302 flow [2023-08-04 07:59:21,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 85.21052631578948) internal successors, (1619), 19 states have internal predecessors, (1619), 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 07:59:21,142 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 07:59:21,142 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 6, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 07:59:21,149 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-04 07:59:21,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-08-04 07:59:21,346 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 07:59:21,347 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 07:59:21,347 INFO L85 PathProgramCache]: Analyzing trace with hash 203908559, now seen corresponding path program 4 times [2023-08-04 07:59:21,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 07:59:21,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710788547] [2023-08-04 07:59:21,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 07:59:21,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 07:59:21,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 07:59:21,555 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-04 07:59:21,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 07:59:21,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710788547] [2023-08-04 07:59:21,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710788547] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 07:59:21,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1030865481] [2023-08-04 07:59:21,555 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-04 07:59:21,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 07:59:21,556 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 07:59:21,557 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 07:59:21,588 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-04 07:59:21,671 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-04 07:59:21,672 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-04 07:59:21,673 INFO L262 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 18 conjunts are in the unsatisfiable core [2023-08-04 07:59:21,674 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 07:59:21,733 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-04 07:59:21,733 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 07:59:21,925 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-04 07:59:21,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1030865481] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 07:59:21,926 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 07:59:21,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 26 [2023-08-04 07:59:21,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936882203] [2023-08-04 07:59:21,926 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 07:59:21,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-08-04 07:59:21,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 07:59:21,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-08-04 07:59:21,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=574, Unknown=0, NotChecked=0, Total=756 [2023-08-04 07:59:21,980 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 190 [2023-08-04 07:59:21,982 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 159 transitions, 2302 flow. Second operand has 28 states, 28 states have (on average 84.85714285714286) internal successors, (2376), 28 states have internal predecessors, (2376), 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 07:59:21,982 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 07:59:21,982 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 190 [2023-08-04 07:59:21,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 07:59:28,063 INFO L124 PetriNetUnfolderBase]: 33456/43103 cut-off events. [2023-08-04 07:59:28,064 INFO L125 PetriNetUnfolderBase]: For 1276420/1276420 co-relation queries the response was YES. [2023-08-04 07:59:28,288 INFO L83 FinitePrefix]: Finished finitePrefix Result has 299319 conditions, 43103 events. 33456/43103 cut-off events. For 1276420/1276420 co-relation queries the response was YES. Maximal size of possible extension queue 754. Compared 205949 event pairs, 643 based on Foata normal form. 704/43797 useless extension candidates. Maximal degree in co-relation 296325. Up to 6152 conditions per place. [2023-08-04 07:59:28,508 INFO L140 encePairwiseOnDemand]: 183/190 looper letters, 583 selfloop transitions, 200 changer transitions 0/785 dead transitions. [2023-08-04 07:59:28,508 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 785 transitions, 10660 flow [2023-08-04 07:59:28,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-08-04 07:59:28,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2023-08-04 07:59:28,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 4668 transitions. [2023-08-04 07:59:28,521 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5118421052631579 [2023-08-04 07:59:28,521 INFO L72 ComplementDD]: Start complementDD. Operand 48 states and 4668 transitions. [2023-08-04 07:59:28,521 INFO L73 IsDeterministic]: Start isDeterministic. Operand 48 states and 4668 transitions. [2023-08-04 07:59:28,523 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 07:59:28,523 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 48 states and 4668 transitions. [2023-08-04 07:59:28,528 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 49 states, 48 states have (on average 97.25) internal successors, (4668), 48 states have internal predecessors, (4668), 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 07:59:28,536 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 49 states, 49 states have (on average 190.0) internal successors, (9310), 49 states have internal predecessors, (9310), 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 07:59:28,538 INFO L81 ComplementDD]: Finished complementDD. Result has 49 states, 49 states have (on average 190.0) internal successors, (9310), 49 states have internal predecessors, (9310), 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 07:59:28,538 INFO L175 Difference]: Start difference. First operand has 139 places, 159 transitions, 2302 flow. Second operand 48 states and 4668 transitions. [2023-08-04 07:59:28,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 785 transitions, 10660 flow [2023-08-04 07:59:36,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 785 transitions, 9590 flow, removed 482 selfloop flow, removed 9 redundant places. [2023-08-04 07:59:36,104 INFO L231 Difference]: Finished difference. Result has 199 places, 231 transitions, 4100 flow [2023-08-04 07:59:36,104 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=1548, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=48, PETRI_FLOW=4100, PETRI_PLACES=199, PETRI_TRANSITIONS=231} [2023-08-04 07:59:36,105 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 165 predicate places. [2023-08-04 07:59:36,105 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 231 transitions, 4100 flow [2023-08-04 07:59:36,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 84.85714285714286) internal successors, (2376), 28 states have internal predecessors, (2376), 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 07:59:36,110 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 07:59:36,110 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 07:59:36,118 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-04 07:59:36,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-08-04 07:59:36,314 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 07:59:36,328 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 07:59:36,329 INFO L85 PathProgramCache]: Analyzing trace with hash -763431761, now seen corresponding path program 5 times [2023-08-04 07:59:36,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 07:59:36,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632555549] [2023-08-04 07:59:36,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 07:59:36,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 07:59:36,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 07:59:36,358 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-04 07:59:36,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 07:59:36,376 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-04 07:59:36,376 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-04 07:59:36,376 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-08-04 07:59:36,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-04 07:59:36,376 INFO L445 BasicCegarLoop]: Path program histogram: [5, 2, 1, 1, 1, 1, 1] [2023-08-04 07:59:36,377 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was UNSAFE (1/2) [2023-08-04 07:59:36,378 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-04 07:59:36,379 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-04 07:59:36,425 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.08 07:59:36 BasicIcfg [2023-08-04 07:59:36,425 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-04 07:59:36,425 INFO L158 Benchmark]: Toolchain (without parser) took 37950.57ms. Allocated memory was 553.6MB in the beginning and 8.7GB in the end (delta: 8.2GB). Free memory was 502.7MB in the beginning and 7.6GB in the end (delta: -7.0GB). Peak memory consumption was 1.1GB. Max. memory is 16.0GB. [2023-08-04 07:59:36,425 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 367.0MB. Free memory is still 319.7MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-04 07:59:36,426 INFO L158 Benchmark]: CACSL2BoogieTranslator took 330.52ms. Allocated memory is still 553.6MB. Free memory was 502.7MB in the beginning and 483.0MB in the end (delta: 19.7MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. [2023-08-04 07:59:36,426 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.58ms. Allocated memory is still 553.6MB. Free memory was 483.0MB in the beginning and 480.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-04 07:59:36,426 INFO L158 Benchmark]: Boogie Preprocessor took 20.43ms. Allocated memory is still 553.6MB. Free memory was 480.9MB in the beginning and 479.7MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-04 07:59:36,426 INFO L158 Benchmark]: RCFGBuilder took 314.09ms. Allocated memory is still 553.6MB. Free memory was 479.7MB in the beginning and 465.8MB in the end (delta: 13.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-08-04 07:59:36,426 INFO L158 Benchmark]: TraceAbstraction took 37249.28ms. Allocated memory was 553.6MB in the beginning and 8.7GB in the end (delta: 8.2GB). Free memory was 465.4MB in the beginning and 7.6GB in the end (delta: -7.1GB). Peak memory consumption was 1.1GB. Max. memory is 16.0GB. [2023-08-04 07:59:36,427 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 367.0MB. Free memory is still 319.7MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 330.52ms. Allocated memory is still 553.6MB. Free memory was 502.7MB in the beginning and 483.0MB in the end (delta: 19.7MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 31.58ms. Allocated memory is still 553.6MB. Free memory was 483.0MB in the beginning and 480.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 20.43ms. Allocated memory is still 553.6MB. Free memory was 480.9MB in the beginning and 479.7MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 314.09ms. Allocated memory is still 553.6MB. Free memory was 479.7MB in the beginning and 465.8MB in the end (delta: 13.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 37249.28ms. Allocated memory was 553.6MB in the beginning and 8.7GB in the end (delta: 8.2GB). Free memory was 465.4MB in the beginning and 7.6GB in the end (delta: -7.1GB). Peak memory consumption was 1.1GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 245]: Unsoundness Warning unspecified type, defaulting to int C: short [245] - GenericResultAtLocation [Line: 245]: Unsoundness Warning unspecified type, defaulting to int C: short [245] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.7s, 78 PlacesBefore, 22 PlacesAfterwards, 80 TransitionsBefore, 20 TransitionsAfterwards, 1694 CoEnabledTransitionPairs, 5 FixpointIterations, 16 TrivialSequentialCompositions, 39 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 11 ConcurrentYvCompositions, 4 ChoiceCompositions, 70 TotalNumberOfCompositions, 1481 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1302, independent: 1275, independent conditional: 0, independent unconditional: 1275, dependent: 27, dependent conditional: 0, dependent unconditional: 27, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 895, independent: 881, independent conditional: 0, independent unconditional: 881, dependent: 14, dependent conditional: 0, dependent unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1302, independent: 394, independent conditional: 0, independent unconditional: 394, dependent: 13, dependent conditional: 0, dependent unconditional: 13, unknown: 895, unknown conditional: 0, unknown unconditional: 895] , Statistics on independence cache: Total cache size (in pairs): 22, Positive cache size: 19, Positive conditional cache size: 0, Positive unconditional cache size: 19, Negative cache size: 3, Negative conditional cache size: 0, Negative unconditional cache size: 3, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.3s, 78 PlacesBefore, 22 PlacesAfterwards, 80 TransitionsBefore, 20 TransitionsAfterwards, 1694 CoEnabledTransitionPairs, 5 FixpointIterations, 16 TrivialSequentialCompositions, 39 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 11 ConcurrentYvCompositions, 4 ChoiceCompositions, 70 TotalNumberOfCompositions, 1505 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1315, independent: 1288, independent conditional: 0, independent unconditional: 1288, dependent: 27, dependent conditional: 0, dependent unconditional: 27, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 890, independent: 876, independent conditional: 0, independent unconditional: 876, dependent: 14, dependent conditional: 0, dependent unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1315, independent: 412, independent conditional: 0, independent unconditional: 412, dependent: 13, dependent conditional: 0, dependent unconditional: 13, unknown: 890, unknown conditional: 0, unknown unconditional: 890] , Statistics on independence cache: Total cache size (in pairs): 16, Positive cache size: 13, Positive conditional cache size: 0, Positive unconditional cache size: 13, Negative cache size: 3, Negative conditional cache size: 0, Negative unconditional cache size: 3, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.9s, 102 PlacesBefore, 34 PlacesAfterwards, 104 TransitionsBefore, 30 TransitionsAfterwards, 4444 CoEnabledTransitionPairs, 5 FixpointIterations, 16 TrivialSequentialCompositions, 48 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 16 ConcurrentYvCompositions, 6 ChoiceCompositions, 86 TotalNumberOfCompositions, 3916 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3495, independent: 3465, independent conditional: 0, independent unconditional: 3465, dependent: 30, dependent conditional: 0, dependent unconditional: 30, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 2282, independent: 2264, independent conditional: 0, independent unconditional: 2264, dependent: 18, dependent conditional: 0, dependent unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3495, independent: 1201, independent conditional: 0, independent unconditional: 1201, dependent: 12, dependent conditional: 0, dependent unconditional: 12, unknown: 2282, unknown conditional: 0, unknown unconditional: 2282] , Statistics on independence cache: Total cache size (in pairs): 66, Positive cache size: 63, Positive conditional cache size: 0, Positive unconditional cache size: 63, Negative cache size: 3, Negative conditional cache size: 0, Negative unconditional cache size: 3, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - CounterExampleResult [Line: 722]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L694] 0 int i = 3, j = 6; [L712] 0 pthread_t id1[2], id2[2]; [L713] 0 int asdf=0; VAL [\old(argc)=51, argc=51, argv={50:49}, argv={50:49}, asdf=0, i=3, id1={5:0}, id2={7:0}, j=6] [L713] COND TRUE 0 asdf<2 [L713] FCALL, FORK 0 pthread_create(&id1[asdf], ((void *)0), t1, ((void *)0)) VAL [\old(argc)=51, arg={0:0}, argc=51, argv={50:49}, argv={50:49}, asdf=0, i=3, id1={5:0}, id2={7:0}, j=6, pthread_create(&id1[asdf], ((void *)0), t1, ((void *)0))=9] [L713] 0 asdf++ VAL [\old(argc)=51, arg={0:0}, argc=51, argv={50:49}, argv={50:49}, asdf=1, i=3, id1={5:0}, id2={7:0}, j=6] [L713] COND TRUE 0 asdf<2 [L696] 1 int k = 0; VAL [arg={0:0}, arg={0:0}, i=3, j=6, k=0] [L713] FCALL, FORK 0 pthread_create(&id1[asdf], ((void *)0), t1, ((void *)0)) VAL [\old(argc)=51, arg={0:0}, arg={0:0}, argc=51, argv={50:49}, argv={50:49}, asdf=1, i=3, id1={5:0}, id2={7:0}, j=6, k=0, pthread_create(&id1[asdf], ((void *)0), t1, ((void *)0))=10] [L713] 0 asdf++ VAL [\old(argc)=51, arg={0:0}, arg={0:0}, argc=51, argv={50:49}, argv={50:49}, asdf=2, i=3, id1={5:0}, id2={7:0}, j=6, k=0] [L713] COND FALSE 0 !(asdf<2) [L714] 0 int asdf=0; VAL [\old(argc)=51, arg={0:0}, arg={0:0}, argc=51, argv={50:49}, argv={50:49}, asdf=0, asdf=2, i=3, id1={5:0}, id2={7:0}, j=6, k=0] [L714] COND TRUE 0 asdf<2 [L714] FCALL, FORK 0 pthread_create(&id2[asdf], ((void *)0), t2, ((void *)0)) VAL [\old(argc)=51, arg={0:0}, arg={0:0}, arg={0:0}, argc=51, argv={50:49}, argv={50:49}, asdf=0, asdf=2, i=3, id1={5:0}, id2={7:0}, j=6, k=0, pthread_create(&id2[asdf], ((void *)0), t2, ((void *)0))=11] [L714] 0 asdf++ VAL [\old(argc)=51, arg={0:0}, arg={0:0}, arg={0:0}, argc=51, argv={50:49}, argv={50:49}, asdf=1, asdf=2, i=3, id1={5:0}, id2={7:0}, j=6, k=0] [L714] COND TRUE 0 asdf<2 [L704] 3 int k = 0; VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=3, j=6, k=0, k=0] [L714] FCALL, FORK 0 pthread_create(&id2[asdf], ((void *)0), t2, ((void *)0)) VAL [\old(argc)=51, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, argc=51, argv={50:49}, argv={50:49}, asdf=1, asdf=2, i=3, id1={5:0}, id2={7:0}, j=6, k=0, k=0, pthread_create(&id2[asdf], ((void *)0), t2, ((void *)0))=12] [L714] 0 asdf++ VAL [\old(argc)=51, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, argc=51, argv={50:49}, argv={50:49}, asdf=2, asdf=2, i=3, id1={5:0}, id2={7:0}, j=6, k=0, k=0] [L696] COND TRUE 1 k < 10 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=6, k=0, k=1] [L704] COND TRUE 3 k < 10 [L706] 3 j = i + 1 [L704] 3 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=8, k=1, k=1] [L696] COND TRUE 1 k < 10 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=8, k=1, k=2] [L704] COND TRUE 3 k < 10 [L706] 3 j = i + 1 [L704] 3 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=10, k=2, k=2] [L696] COND TRUE 1 k < 10 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=10, k=2, k=3] [L704] COND TRUE 3 k < 10 [L706] 3 j = i + 1 [L704] 3 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=12, k=3, k=3] [L696] COND TRUE 1 k < 10 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=12, k=3, k=4] [L704] COND TRUE 3 k < 10 [L706] 3 j = i + 1 [L704] 3 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=14, k=4, k=4] [L696] COND TRUE 1 k < 10 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=14, k=4, k=5] [L704] COND TRUE 3 k < 10 [L706] 3 j = i + 1 [L704] 3 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=16, k=5, k=5] [L696] COND TRUE 1 k < 10 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=17, j=16, k=5, k=6] [L704] COND TRUE 3 k < 10 [L706] 3 j = i + 1 [L704] 3 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=17, j=18, k=6, k=6] [L696] COND TRUE 1 k < 10 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=19, j=18, k=6, k=7] [L704] COND TRUE 3 k < 10 [L706] 3 j = i + 1 [L704] 3 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=19, j=20, k=7, k=7] [L696] COND TRUE 1 k < 10 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=21, j=20, k=7, k=8] [L704] COND TRUE 3 k < 10 [L706] 3 j = i + 1 [L704] 3 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=21, j=22, k=8, k=8] [L696] COND TRUE 1 k < 10 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=23, j=22, k=8, k=9] [L704] COND TRUE 3 k < 10 [L706] 3 j = i + 1 [L704] 3 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=23, j=24, k=9, k=9] [L696] COND TRUE 1 k < 10 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=25, j=24, k=10, k=9] [L704] COND TRUE 3 k < 10 [L706] 3 j = i + 1 [L704] 3 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=25, j=26, k=10, k=10] [L714] COND FALSE 0 !(asdf<2) [L716] 0 int condI = i >= (2*10 +6); VAL [\old(argc)=51, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, argc=51, argv={50:49}, argv={50:49}, asdf=2, asdf=2, condI=0, i=25, id1={5:0}, id2={7:0}, j=26, k=10, k=10] [L719] 0 int condJ = j >= (2*10 +6); [L721] COND TRUE 0 condI || condJ [L722] 0 reach_error() VAL [\old(argc)=51, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, argc=51, argv={50:49}, argv={50:49}, asdf=2, asdf=2, condI=0, condJ=1, i=25, id1={5:0}, id2={7:0}, j=26, k=10, k=10] - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 94 locations, 3 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: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.8s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 60 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 33 mSDsluCounter, 1 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 8 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 113 IncrementalHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8 mSolverCounterUnsat, 1 mSDtfsCounter, 113 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 32 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=50occurred in iteration=0, InterpolantAutomatonStates: 10, 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, 0.2s InterpolantComputationTime, 38 NumberOfCodeBlocks, 38 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 42 ConstructedInterpolants, 0 QuantifiedInterpolants, 78 SizeOfPredicates, 0 NumberOfNonLiveVariables, 191 ConjunctsInSsa, 5 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 4/8 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 7 procedures, 114 locations, 3 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: 32.7s, OverallIterations: 12, TraceHistogramMax: 10, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 26.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3327 SdHoareTripleChecker+Valid, 2.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3212 mSDsluCounter, 318 SdHoareTripleChecker+Invalid, 1.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 292 mSDsCounter, 415 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3425 IncrementalHoareTripleChecker+Invalid, 3840 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 415 mSolverCounterUnsat, 26 mSDtfsCounter, 3425 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 446 GetRequests, 259 SyntacticMatches, 6 SemanticMatches, 181 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2187 ImplicationChecksByTransitivity, 1.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4100occurred in iteration=11, InterpolantAutomatonStates: 139, 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: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 428 NumberOfCodeBlocks, 428 NumberOfCodeBlocksAsserted, 25 NumberOfCheckSat, 501 ConstructedInterpolants, 0 QuantifiedInterpolants, 1593 SizeOfPredicates, 25 NumberOfNonLiveVariables, 1207 ConjunctsInSsa, 64 ConjunctsInUnsatCore, 25 InterpolantComputations, 5 PerfectInterpolantSequences, 188/335 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 5 procedures, 94 locations, 3 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: 1.4s, OverallIterations: 1, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.3s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=50occurred 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, 6 NumberOfCodeBlocks, 6 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 07:59:36,453 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...