/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 TOGETHER -tc /storage/repos/CAV22/benchmarks/AutomizerCInline.xml -i /storage/repos/CAV22/benchmarks/increased_bounds/goblint-regression_13-privatized_32-traces-mine-vs-oplus-vs-meet_true_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 16:01:45,841 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 16:01:45,901 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 16:01:45,905 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 16:01:45,906 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 16:01:45,906 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 16:01:45,906 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 16:01:45,927 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 16:01:45,928 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 16:01:45,932 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 16:01:45,932 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 16:01:45,932 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 16:01:45,933 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 16:01:45,934 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 16:01:45,934 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 16:01:45,934 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 16:01:45,934 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 16:01:45,935 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 16:01:45,935 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 16:01:45,935 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 16:01:45,935 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 16:01:45,935 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 16:01:45,935 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 16:01:45,936 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 16:01:45,936 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 16:01:45,936 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 16:01:45,936 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 16:01:45,936 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 16:01:45,937 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 16:01:45,937 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 16:01:45,937 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 16:01:45,938 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 16:01:45,938 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 16:01:45,938 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 16:01:45,938 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 16:01:45,938 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 16:01:45,939 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 16:01:45,939 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 16:01:45,939 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 16:01:45,939 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 16:01:45,940 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 16:01:45,940 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> TOGETHER [2023-08-03 16:01:46,091 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 16:01:46,121 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 16:01:46,123 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 16:01:46,124 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 16:01:46,124 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 16:01:46,125 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/goblint-regression_13-privatized_32-traces-mine-vs-oplus-vs-meet_true_bound2.i [2023-08-03 16:01:47,234 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 16:01:47,416 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 16:01:47,417 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/goblint-regression_13-privatized_32-traces-mine-vs-oplus-vs-meet_true_bound2.i [2023-08-03 16:01:47,424 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d7d5220f/53095c676961435b996f07d80f5805bb/FLAGdc7c7d447 [2023-08-03 16:01:47,439 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d7d5220f/53095c676961435b996f07d80f5805bb [2023-08-03 16:01:47,442 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 16:01:47,443 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 16:01:47,443 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 16:01:47,443 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 16:01:47,448 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 16:01:47,448 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 04:01:47" (1/1) ... [2023-08-03 16:01:47,449 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5380c6a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:01:47, skipping insertion in model container [2023-08-03 16:01:47,449 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 04:01:47" (1/1) ... [2023-08-03 16:01:47,478 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 16:01:47,566 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/goblint-regression_13-privatized_32-traces-mine-vs-oplus-vs-meet_true_bound2.i[1105,1118] [2023-08-03 16:01:47,687 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 16:01:47,695 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 16:01:47,703 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/goblint-regression_13-privatized_32-traces-mine-vs-oplus-vs-meet_true_bound2.i[1105,1118] [2023-08-03 16:01:47,718 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [231] [2023-08-03 16:01:47,719 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [232] [2023-08-03 16:01:47,731 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 16:01:47,762 INFO L206 MainTranslator]: Completed translation [2023-08-03 16:01:47,762 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:01:47 WrapperNode [2023-08-03 16:01:47,762 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 16:01:47,763 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 16:01:47,763 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 16:01:47,763 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 16:01:47,767 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:01:47" (1/1) ... [2023-08-03 16:01:47,780 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:01:47" (1/1) ... [2023-08-03 16:01:47,793 INFO L138 Inliner]: procedures = 162, calls = 40, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 87 [2023-08-03 16:01:47,793 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 16:01:47,793 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 16:01:47,793 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 16:01:47,794 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 16:01:47,801 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:01:47" (1/1) ... [2023-08-03 16:01:47,801 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:01:47" (1/1) ... [2023-08-03 16:01:47,806 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:01:47" (1/1) ... [2023-08-03 16:01:47,806 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:01:47" (1/1) ... [2023-08-03 16:01:47,811 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:01:47" (1/1) ... [2023-08-03 16:01:47,812 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:01:47" (1/1) ... [2023-08-03 16:01:47,813 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:01:47" (1/1) ... [2023-08-03 16:01:47,814 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:01:47" (1/1) ... [2023-08-03 16:01:47,816 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 16:01:47,816 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 16:01:47,816 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 16:01:47,816 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 16:01:47,818 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:01:47" (1/1) ... [2023-08-03 16:01:47,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 16:01:47,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 16:01:47,870 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) [2023-08-03 16:01:47,919 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 [2023-08-03 16:01:47,940 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-03 16:01:47,940 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 16:01:47,940 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-03 16:01:47,941 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 16:01:47,941 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 16:01:47,941 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-03 16:01:47,941 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-03 16:01:47,942 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 16:01:47,942 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 16:01:47,943 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 16:01:47,943 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 16:01:47,944 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-03 16:01:48,062 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 16:01:48,063 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 16:01:48,257 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 16:01:48,262 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 16:01:48,262 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-03 16:01:48,264 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 04:01:48 BoogieIcfgContainer [2023-08-03 16:01:48,264 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 16:01:48,265 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 16:01:48,265 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 16:01:48,268 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 16:01:48,268 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 04:01:47" (1/3) ... [2023-08-03 16:01:48,268 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cf96a72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 04:01:48, skipping insertion in model container [2023-08-03 16:01:48,268 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:01:47" (2/3) ... [2023-08-03 16:01:48,269 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cf96a72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 04:01:48, skipping insertion in model container [2023-08-03 16:01:48,269 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 04:01:48" (3/3) ... [2023-08-03 16:01:48,270 INFO L112 eAbstractionObserver]: Analyzing ICFG goblint-regression_13-privatized_32-traces-mine-vs-oplus-vs-meet_true_bound2.i [2023-08-03 16:01:48,275 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 16:01:48,283 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 16:01:48,284 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-08-03 16:01:48,284 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 16:01:48,331 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-03 16:01:48,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 104 places, 106 transitions, 220 flow [2023-08-03 16:01:48,410 INFO L124 PetriNetUnfolderBase]: 9/150 cut-off events. [2023-08-03 16:01:48,410 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-03 16:01:48,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 156 conditions, 150 events. 9/150 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 240 event pairs, 0 based on Foata normal form. 0/134 useless extension candidates. Maximal degree in co-relation 77. Up to 4 conditions per place. [2023-08-03 16:01:48,414 INFO L82 GeneralOperation]: Start removeDead. Operand has 104 places, 106 transitions, 220 flow [2023-08-03 16:01:48,416 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 87 places, 86 transitions, 177 flow [2023-08-03 16:01:48,419 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 16:01:48,425 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 87 places, 86 transitions, 177 flow [2023-08-03 16:01:48,428 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 87 places, 86 transitions, 177 flow [2023-08-03 16:01:48,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 87 places, 86 transitions, 177 flow [2023-08-03 16:01:48,446 INFO L124 PetriNetUnfolderBase]: 4/115 cut-off events. [2023-08-03 16:01:48,446 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 16:01:48,446 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120 conditions, 115 events. 4/115 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 176 event pairs, 0 based on Foata normal form. 0/107 useless extension candidates. Maximal degree in co-relation 62. Up to 4 conditions per place. [2023-08-03 16:01:48,447 INFO L119 LiptonReduction]: Number of co-enabled transitions 1190 [2023-08-03 16:01:50,208 INFO L134 LiptonReduction]: Checked pairs total: 3817 [2023-08-03 16:01:50,208 INFO L136 LiptonReduction]: Total number of compositions: 66 [2023-08-03 16:01:50,224 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 16:01:50,238 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;@28728c00, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 16:01:50,238 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-03 16:01:50,245 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 16:01:50,245 INFO L124 PetriNetUnfolderBase]: 1/8 cut-off events. [2023-08-03 16:01:50,245 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 16:01:50,245 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:01:50,246 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-03 16:01:50,246 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 16:01:50,262 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:01:50,262 INFO L85 PathProgramCache]: Analyzing trace with hash 10897777, now seen corresponding path program 1 times [2023-08-03 16:01:50,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:01:50,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855047312] [2023-08-03 16:01:50,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:01:50,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:01:50,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:01:50,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 16:01:50,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:01:50,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855047312] [2023-08-03 16:01:50,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855047312] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 16:01:50,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 16:01:50,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 16:01:50,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163945947] [2023-08-03 16:01:50,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 16:01:50,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 16:01:50,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:01:50,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 16:01:50,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 16:01:50,475 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 172 [2023-08-03 16:01:50,478 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 26 transitions, 57 flow. Second operand has 3 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:01:50,478 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:01:50,479 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 172 [2023-08-03 16:01:50,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:01:50,544 INFO L124 PetriNetUnfolderBase]: 54/160 cut-off events. [2023-08-03 16:01:50,544 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 16:01:50,545 INFO L83 FinitePrefix]: Finished finitePrefix Result has 298 conditions, 160 events. 54/160 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 664 event pairs, 16 based on Foata normal form. 7/141 useless extension candidates. Maximal degree in co-relation 273. Up to 118 conditions per place. [2023-08-03 16:01:50,547 INFO L140 encePairwiseOnDemand]: 168/172 looper letters, 21 selfloop transitions, 2 changer transitions 1/32 dead transitions. [2023-08-03 16:01:50,548 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 32 transitions, 117 flow [2023-08-03 16:01:50,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 16:01:50,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 16:01:50,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 308 transitions. [2023-08-03 16:01:50,564 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5968992248062015 [2023-08-03 16:01:50,564 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 308 transitions. [2023-08-03 16:01:50,565 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 308 transitions. [2023-08-03 16:01:50,567 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:01:50,569 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 308 transitions. [2023-08-03 16:01:50,574 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 102.66666666666667) internal successors, (308), 3 states have internal predecessors, (308), 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) [2023-08-03 16:01:50,578 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 172.0) internal successors, (688), 4 states have internal predecessors, (688), 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) [2023-08-03 16:01:50,578 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 172.0) internal successors, (688), 4 states have internal predecessors, (688), 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) [2023-08-03 16:01:50,580 INFO L175 Difference]: Start difference. First operand has 28 places, 26 transitions, 57 flow. Second operand 3 states and 308 transitions. [2023-08-03 16:01:50,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 32 transitions, 117 flow [2023-08-03 16:01:50,582 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 32 transitions, 117 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 16:01:50,583 INFO L231 Difference]: Finished difference. Result has 31 places, 24 transitions, 61 flow [2023-08-03 16:01:50,584 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=55, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=61, PETRI_PLACES=31, PETRI_TRANSITIONS=24} [2023-08-03 16:01:50,587 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 3 predicate places. [2023-08-03 16:01:50,587 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 24 transitions, 61 flow [2023-08-03 16:01:50,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:01:50,588 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:01:50,588 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-03 16:01:50,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 16:01:50,588 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 16:01:50,588 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:01:50,588 INFO L85 PathProgramCache]: Analyzing trace with hash 1896335256, now seen corresponding path program 1 times [2023-08-03 16:01:50,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:01:50,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303326240] [2023-08-03 16:01:50,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:01:50,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:01:50,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 16:01:50,634 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 16:01:50,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 16:01:50,672 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 16:01:50,673 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 16:01:50,674 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2023-08-03 16:01:50,676 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2023-08-03 16:01:50,676 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2023-08-03 16:01:50,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-03 16:01:50,677 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-03 16:01:50,679 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 16:01:50,679 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 16:01:50,706 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-03 16:01:50,714 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 124 places, 125 transitions, 268 flow [2023-08-03 16:01:50,742 INFO L124 PetriNetUnfolderBase]: 16/237 cut-off events. [2023-08-03 16:01:50,742 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-03 16:01:50,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 251 conditions, 237 events. 16/237 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 574 event pairs, 0 based on Foata normal form. 0/211 useless extension candidates. Maximal degree in co-relation 152. Up to 8 conditions per place. [2023-08-03 16:01:50,744 INFO L82 GeneralOperation]: Start removeDead. Operand has 124 places, 125 transitions, 268 flow [2023-08-03 16:01:50,745 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 107 places, 104 transitions, 220 flow [2023-08-03 16:01:50,745 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 16:01:50,746 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 107 places, 104 transitions, 220 flow [2023-08-03 16:01:50,746 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 107 places, 104 transitions, 220 flow [2023-08-03 16:01:50,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 107 places, 104 transitions, 220 flow [2023-08-03 16:01:50,758 INFO L124 PetriNetUnfolderBase]: 6/167 cut-off events. [2023-08-03 16:01:50,758 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-03 16:01:50,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 177 conditions, 167 events. 6/167 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 364 event pairs, 0 based on Foata normal form. 0/155 useless extension candidates. Maximal degree in co-relation 116. Up to 6 conditions per place. [2023-08-03 16:01:50,761 INFO L119 LiptonReduction]: Number of co-enabled transitions 2992 [2023-08-03 16:01:52,660 INFO L134 LiptonReduction]: Checked pairs total: 12218 [2023-08-03 16:01:52,661 INFO L136 LiptonReduction]: Total number of compositions: 71 [2023-08-03 16:01:52,662 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 16:01:52,663 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;@28728c00, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 16:01:52,663 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-03 16:01:52,664 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 16:01:52,664 INFO L124 PetriNetUnfolderBase]: 1/8 cut-off events. [2023-08-03 16:01:52,664 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 16:01:52,664 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:01:52,664 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-03 16:01:52,665 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 16:01:52,665 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:01:52,665 INFO L85 PathProgramCache]: Analyzing trace with hash 17516402, now seen corresponding path program 1 times [2023-08-03 16:01:52,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:01:52,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648290772] [2023-08-03 16:01:52,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:01:52,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:01:52,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:01:52,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 16:01:52,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:01:52,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648290772] [2023-08-03 16:01:52,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648290772] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 16:01:52,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 16:01:52,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 16:01:52,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852131735] [2023-08-03 16:01:52,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 16:01:52,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 16:01:52,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:01:52,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 16:01:52,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 16:01:52,742 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 196 [2023-08-03 16:01:52,742 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 38 transitions, 88 flow. Second operand has 3 states, 3 states have (on average 112.33333333333333) internal successors, (337), 3 states have internal predecessors, (337), 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) [2023-08-03 16:01:52,742 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:01:52,743 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 196 [2023-08-03 16:01:52,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:01:52,916 INFO L124 PetriNetUnfolderBase]: 729/1597 cut-off events. [2023-08-03 16:01:52,916 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2023-08-03 16:01:52,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2859 conditions, 1597 events. 729/1597 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 10531 event pairs, 315 based on Foata normal form. 49/1468 useless extension candidates. Maximal degree in co-relation 380. Up to 1213 conditions per place. [2023-08-03 16:01:52,925 INFO L140 encePairwiseOnDemand]: 192/196 looper letters, 28 selfloop transitions, 2 changer transitions 1/45 dead transitions. [2023-08-03 16:01:52,925 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 45 transitions, 164 flow [2023-08-03 16:01:52,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 16:01:52,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 16:01:52,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 366 transitions. [2023-08-03 16:01:52,927 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6224489795918368 [2023-08-03 16:01:52,927 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 366 transitions. [2023-08-03 16:01:52,927 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 366 transitions. [2023-08-03 16:01:52,927 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:01:52,928 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 366 transitions. [2023-08-03 16:01:52,928 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 122.0) internal successors, (366), 3 states have internal predecessors, (366), 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) [2023-08-03 16:01:52,930 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 196.0) internal successors, (784), 4 states have internal predecessors, (784), 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) [2023-08-03 16:01:52,931 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 196.0) internal successors, (784), 4 states have internal predecessors, (784), 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) [2023-08-03 16:01:52,931 INFO L175 Difference]: Start difference. First operand has 42 places, 38 transitions, 88 flow. Second operand 3 states and 366 transitions. [2023-08-03 16:01:52,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 45 transitions, 164 flow [2023-08-03 16:01:52,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 45 transitions, 162 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-08-03 16:01:52,933 INFO L231 Difference]: Finished difference. Result has 45 places, 37 transitions, 94 flow [2023-08-03 16:01:52,933 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=196, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=94, PETRI_PLACES=45, PETRI_TRANSITIONS=37} [2023-08-03 16:01:52,933 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 3 predicate places. [2023-08-03 16:01:52,934 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 37 transitions, 94 flow [2023-08-03 16:01:52,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 112.33333333333333) internal successors, (337), 3 states have internal predecessors, (337), 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) [2023-08-03 16:01:52,934 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:01:52,934 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 16:01:52,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-03 16:01:52,934 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 16:01:52,934 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:01:52,935 INFO L85 PathProgramCache]: Analyzing trace with hash -915252687, now seen corresponding path program 1 times [2023-08-03 16:01:52,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:01:52,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631885423] [2023-08-03 16:01:52,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:01:52,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:01:52,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:01:53,008 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 16:01:53,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:01:53,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631885423] [2023-08-03 16:01:53,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631885423] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 16:01:53,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [866495486] [2023-08-03 16:01:53,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:01:53,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 16:01:53,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 16:01:53,012 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) [2023-08-03 16:01:53,051 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-03 16:01:53,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:01:53,085 INFO L262 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 16:01:53,087 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 16:01:53,116 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 16:01:53,116 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 16:01:53,130 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 16:01:53,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [866495486] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 16:01:53,131 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 16:01:53,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-03 16:01:53,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825029248] [2023-08-03 16:01:53,132 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 16:01:53,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 16:01:53,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:01:53,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 16:01:53,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 16:01:53,148 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 196 [2023-08-03 16:01:53,150 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 37 transitions, 94 flow. Second operand has 5 states, 5 states have (on average 112.2) internal successors, (561), 5 states have internal predecessors, (561), 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) [2023-08-03 16:01:53,150 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:01:53,150 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 196 [2023-08-03 16:01:53,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:01:53,270 INFO L124 PetriNetUnfolderBase]: 616/1239 cut-off events. [2023-08-03 16:01:53,270 INFO L125 PetriNetUnfolderBase]: For 71/71 co-relation queries the response was YES. [2023-08-03 16:01:53,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2398 conditions, 1239 events. 616/1239 cut-off events. For 71/71 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 7501 event pairs, 118 based on Foata normal form. 7/1188 useless extension candidates. Maximal degree in co-relation 591. Up to 792 conditions per place. [2023-08-03 16:01:53,276 INFO L140 encePairwiseOnDemand]: 192/196 looper letters, 38 selfloop transitions, 4 changer transitions 0/56 dead transitions. [2023-08-03 16:01:53,276 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 56 transitions, 216 flow [2023-08-03 16:01:53,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 16:01:53,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 16:01:53,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 483 transitions. [2023-08-03 16:01:53,277 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6160714285714286 [2023-08-03 16:01:53,277 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 483 transitions. [2023-08-03 16:01:53,278 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 483 transitions. [2023-08-03 16:01:53,278 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:01:53,278 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 483 transitions. [2023-08-03 16:01:53,279 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 120.75) internal successors, (483), 4 states have internal predecessors, (483), 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) [2023-08-03 16:01:53,280 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 196.0) internal successors, (980), 5 states have internal predecessors, (980), 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) [2023-08-03 16:01:53,280 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 196.0) internal successors, (980), 5 states have internal predecessors, (980), 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) [2023-08-03 16:01:53,280 INFO L175 Difference]: Start difference. First operand has 45 places, 37 transitions, 94 flow. Second operand 4 states and 483 transitions. [2023-08-03 16:01:53,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 56 transitions, 216 flow [2023-08-03 16:01:53,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 56 transitions, 214 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 16:01:53,282 INFO L231 Difference]: Finished difference. Result has 48 places, 38 transitions, 112 flow [2023-08-03 16:01:53,282 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=196, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=112, PETRI_PLACES=48, PETRI_TRANSITIONS=38} [2023-08-03 16:01:53,284 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 6 predicate places. [2023-08-03 16:01:53,284 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 38 transitions, 112 flow [2023-08-03 16:01:53,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 112.2) internal successors, (561), 5 states have internal predecessors, (561), 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) [2023-08-03 16:01:53,285 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:01:53,285 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-03 16:01:53,305 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-03 16:01:53,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 16:01:53,492 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 16:01:53,492 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:01:53,492 INFO L85 PathProgramCache]: Analyzing trace with hash -1376693536, now seen corresponding path program 1 times [2023-08-03 16:01:53,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:01:53,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811975987] [2023-08-03 16:01:53,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:01:53,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:01:53,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:01:53,581 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 16:01:53,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:01:53,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811975987] [2023-08-03 16:01:53,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811975987] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 16:01:53,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [930958800] [2023-08-03 16:01:53,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:01:53,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 16:01:53,582 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 16:01:53,594 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) [2023-08-03 16:01:53,655 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-03 16:01:53,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:01:53,707 INFO L262 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 16:01:53,709 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 16:01:53,728 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 16:01:53,729 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 16:01:53,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [930958800] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 16:01:53,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 16:01:53,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-08-03 16:01:53,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234783152] [2023-08-03 16:01:53,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 16:01:53,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 16:01:53,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:01:53,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 16:01:53,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 16:01:53,746 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 196 [2023-08-03 16:01:53,747 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 38 transitions, 112 flow. Second operand has 5 states, 5 states have (on average 111.6) internal successors, (558), 5 states have internal predecessors, (558), 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) [2023-08-03 16:01:53,747 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:01:53,747 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 196 [2023-08-03 16:01:53,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:01:53,862 INFO L124 PetriNetUnfolderBase]: 545/1077 cut-off events. [2023-08-03 16:01:53,862 INFO L125 PetriNetUnfolderBase]: For 302/302 co-relation queries the response was YES. [2023-08-03 16:01:53,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2246 conditions, 1077 events. 545/1077 cut-off events. For 302/302 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 6229 event pairs, 7 based on Foata normal form. 42/1075 useless extension candidates. Maximal degree in co-relation 317. Up to 791 conditions per place. [2023-08-03 16:01:53,867 INFO L140 encePairwiseOnDemand]: 193/196 looper letters, 38 selfloop transitions, 3 changer transitions 0/54 dead transitions. [2023-08-03 16:01:53,867 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 54 transitions, 222 flow [2023-08-03 16:01:53,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 16:01:53,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 16:01:53,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 592 transitions. [2023-08-03 16:01:53,868 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6040816326530613 [2023-08-03 16:01:53,868 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 592 transitions. [2023-08-03 16:01:53,868 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 592 transitions. [2023-08-03 16:01:53,869 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:01:53,869 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 592 transitions. [2023-08-03 16:01:53,870 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 118.4) internal successors, (592), 5 states have internal predecessors, (592), 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) [2023-08-03 16:01:53,871 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 196.0) internal successors, (1176), 6 states have internal predecessors, (1176), 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) [2023-08-03 16:01:53,871 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 196.0) internal successors, (1176), 6 states have internal predecessors, (1176), 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) [2023-08-03 16:01:53,871 INFO L175 Difference]: Start difference. First operand has 48 places, 38 transitions, 112 flow. Second operand 5 states and 592 transitions. [2023-08-03 16:01:53,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 54 transitions, 222 flow [2023-08-03 16:01:53,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 54 transitions, 215 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-03 16:01:53,873 INFO L231 Difference]: Finished difference. Result has 48 places, 36 transitions, 101 flow [2023-08-03 16:01:53,873 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=196, PETRI_DIFFERENCE_MINUEND_FLOW=95, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=101, PETRI_PLACES=48, PETRI_TRANSITIONS=36} [2023-08-03 16:01:53,873 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 6 predicate places. [2023-08-03 16:01:53,874 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 36 transitions, 101 flow [2023-08-03 16:01:53,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 111.6) internal successors, (558), 5 states have internal predecessors, (558), 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) [2023-08-03 16:01:53,874 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:01:53,874 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2023-08-03 16:01:53,895 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-03 16:01:54,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 16:01:54,079 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 16:01:54,079 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:01:54,079 INFO L85 PathProgramCache]: Analyzing trace with hash 272158223, now seen corresponding path program 1 times [2023-08-03 16:01:54,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:01:54,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559174375] [2023-08-03 16:01:54,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:01:54,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:01:54,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:01:54,122 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 16:01:54,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:01:54,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559174375] [2023-08-03 16:01:54,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559174375] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 16:01:54,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 16:01:54,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-03 16:01:54,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94846786] [2023-08-03 16:01:54,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 16:01:54,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 16:01:54,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:01:54,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 16:01:54,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 16:01:54,133 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 196 [2023-08-03 16:01:54,133 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 36 transitions, 101 flow. Second operand has 3 states, 3 states have (on average 112.66666666666667) internal successors, (338), 3 states have internal predecessors, (338), 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) [2023-08-03 16:01:54,134 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:01:54,134 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 196 [2023-08-03 16:01:54,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:01:54,226 INFO L124 PetriNetUnfolderBase]: 636/1478 cut-off events. [2023-08-03 16:01:54,226 INFO L125 PetriNetUnfolderBase]: For 536/536 co-relation queries the response was YES. [2023-08-03 16:01:54,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2856 conditions, 1478 events. 636/1478 cut-off events. For 536/536 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 9971 event pairs, 382 based on Foata normal form. 48/1451 useless extension candidates. Maximal degree in co-relation 1809. Up to 742 conditions per place. [2023-08-03 16:01:54,231 INFO L140 encePairwiseOnDemand]: 188/196 looper letters, 38 selfloop transitions, 6 changer transitions 0/56 dead transitions. [2023-08-03 16:01:54,231 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 56 transitions, 250 flow [2023-08-03 16:01:54,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 16:01:54,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 16:01:54,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 374 transitions. [2023-08-03 16:01:54,232 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6360544217687075 [2023-08-03 16:01:54,233 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 374 transitions. [2023-08-03 16:01:54,233 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 374 transitions. [2023-08-03 16:01:54,233 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:01:54,233 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 374 transitions. [2023-08-03 16:01:54,234 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 124.66666666666667) internal successors, (374), 3 states have internal predecessors, (374), 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) [2023-08-03 16:01:54,234 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 196.0) internal successors, (784), 4 states have internal predecessors, (784), 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) [2023-08-03 16:01:54,235 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 196.0) internal successors, (784), 4 states have internal predecessors, (784), 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) [2023-08-03 16:01:54,235 INFO L175 Difference]: Start difference. First operand has 48 places, 36 transitions, 101 flow. Second operand 3 states and 374 transitions. [2023-08-03 16:01:54,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 56 transitions, 250 flow [2023-08-03 16:01:54,236 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 56 transitions, 242 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-03 16:01:54,237 INFO L231 Difference]: Finished difference. Result has 49 places, 41 transitions, 144 flow [2023-08-03 16:01:54,237 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=196, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=144, PETRI_PLACES=49, PETRI_TRANSITIONS=41} [2023-08-03 16:01:54,237 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 7 predicate places. [2023-08-03 16:01:54,237 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 41 transitions, 144 flow [2023-08-03 16:01:54,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 112.66666666666667) internal successors, (338), 3 states have internal predecessors, (338), 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) [2023-08-03 16:01:54,238 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:01:54,238 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 16:01:54,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-03 16:01:54,238 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 16:01:54,238 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:01:54,238 INFO L85 PathProgramCache]: Analyzing trace with hash 1377644105, now seen corresponding path program 1 times [2023-08-03 16:01:54,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:01:54,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816758884] [2023-08-03 16:01:54,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:01:54,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:01:54,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:01:54,280 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-03 16:01:54,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:01:54,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816758884] [2023-08-03 16:01:54,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816758884] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 16:01:54,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 16:01:54,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-03 16:01:54,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099232726] [2023-08-03 16:01:54,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 16:01:54,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 16:01:54,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:01:54,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 16:01:54,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 16:01:54,330 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 196 [2023-08-03 16:01:54,330 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 41 transitions, 144 flow. Second operand has 3 states, 3 states have (on average 100.33333333333333) internal successors, (301), 3 states have internal predecessors, (301), 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) [2023-08-03 16:01:54,330 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:01:54,330 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 196 [2023-08-03 16:01:54,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:01:54,516 INFO L124 PetriNetUnfolderBase]: 1569/3084 cut-off events. [2023-08-03 16:01:54,517 INFO L125 PetriNetUnfolderBase]: For 1374/1374 co-relation queries the response was YES. [2023-08-03 16:01:54,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7315 conditions, 3084 events. 1569/3084 cut-off events. For 1374/1374 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 19689 event pairs, 660 based on Foata normal form. 409/3487 useless extension candidates. Maximal degree in co-relation 3467. Up to 1725 conditions per place. [2023-08-03 16:01:54,528 INFO L140 encePairwiseOnDemand]: 180/196 looper letters, 50 selfloop transitions, 16 changer transitions 0/70 dead transitions. [2023-08-03 16:01:54,528 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 70 transitions, 376 flow [2023-08-03 16:01:54,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 16:01:54,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 16:01:54,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 350 transitions. [2023-08-03 16:01:54,529 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5952380952380952 [2023-08-03 16:01:54,530 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 350 transitions. [2023-08-03 16:01:54,530 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 350 transitions. [2023-08-03 16:01:54,530 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:01:54,530 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 350 transitions. [2023-08-03 16:01:54,530 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 116.66666666666667) internal successors, (350), 3 states have internal predecessors, (350), 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) [2023-08-03 16:01:54,531 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 196.0) internal successors, (784), 4 states have internal predecessors, (784), 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) [2023-08-03 16:01:54,531 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 196.0) internal successors, (784), 4 states have internal predecessors, (784), 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) [2023-08-03 16:01:54,531 INFO L175 Difference]: Start difference. First operand has 49 places, 41 transitions, 144 flow. Second operand 3 states and 350 transitions. [2023-08-03 16:01:54,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 70 transitions, 376 flow [2023-08-03 16:01:54,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 70 transitions, 356 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-03 16:01:54,535 INFO L231 Difference]: Finished difference. Result has 50 places, 51 transitions, 220 flow [2023-08-03 16:01:54,535 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=196, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=220, PETRI_PLACES=50, PETRI_TRANSITIONS=51} [2023-08-03 16:01:54,535 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 8 predicate places. [2023-08-03 16:01:54,536 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 51 transitions, 220 flow [2023-08-03 16:01:54,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 100.33333333333333) internal successors, (301), 3 states have internal predecessors, (301), 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) [2023-08-03 16:01:54,536 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:01:54,536 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 16:01:54,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-03 16:01:54,536 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 16:01:54,536 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:01:54,536 INFO L85 PathProgramCache]: Analyzing trace with hash -668535478, now seen corresponding path program 1 times [2023-08-03 16:01:54,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:01:54,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93222277] [2023-08-03 16:01:54,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:01:54,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:01:54,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:01:54,628 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-03 16:01:54,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:01:54,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93222277] [2023-08-03 16:01:54,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93222277] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 16:01:54,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 16:01:54,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-03 16:01:54,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841889631] [2023-08-03 16:01:54,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 16:01:54,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 16:01:54,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:01:54,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 16:01:54,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-03 16:01:54,720 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 196 [2023-08-03 16:01:54,721 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 51 transitions, 220 flow. Second operand has 5 states, 5 states have (on average 100.8) internal successors, (504), 5 states have internal predecessors, (504), 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) [2023-08-03 16:01:54,721 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:01:54,721 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 196 [2023-08-03 16:01:54,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:01:54,877 INFO L124 PetriNetUnfolderBase]: 766/1770 cut-off events. [2023-08-03 16:01:54,877 INFO L125 PetriNetUnfolderBase]: For 1197/1197 co-relation queries the response was YES. [2023-08-03 16:01:54,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5352 conditions, 1770 events. 766/1770 cut-off events. For 1197/1197 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 11311 event pairs, 248 based on Foata normal form. 155/1911 useless extension candidates. Maximal degree in co-relation 2670. Up to 838 conditions per place. [2023-08-03 16:01:54,883 INFO L140 encePairwiseOnDemand]: 187/196 looper letters, 60 selfloop transitions, 14 changer transitions 4/84 dead transitions. [2023-08-03 16:01:54,883 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 84 transitions, 527 flow [2023-08-03 16:01:54,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 16:01:54,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 16:01:54,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 449 transitions. [2023-08-03 16:01:54,884 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5727040816326531 [2023-08-03 16:01:54,884 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 449 transitions. [2023-08-03 16:01:54,884 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 449 transitions. [2023-08-03 16:01:54,884 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:01:54,885 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 449 transitions. [2023-08-03 16:01:54,885 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 112.25) internal successors, (449), 4 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) [2023-08-03 16:01:54,886 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 196.0) internal successors, (980), 5 states have internal predecessors, (980), 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) [2023-08-03 16:01:54,886 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 196.0) internal successors, (980), 5 states have internal predecessors, (980), 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) [2023-08-03 16:01:54,886 INFO L175 Difference]: Start difference. First operand has 50 places, 51 transitions, 220 flow. Second operand 4 states and 449 transitions. [2023-08-03 16:01:54,886 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 84 transitions, 527 flow [2023-08-03 16:01:54,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 84 transitions, 498 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 16:01:54,889 INFO L231 Difference]: Finished difference. Result has 53 places, 55 transitions, 275 flow [2023-08-03 16:01:54,890 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=196, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=275, PETRI_PLACES=53, PETRI_TRANSITIONS=55} [2023-08-03 16:01:54,890 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 11 predicate places. [2023-08-03 16:01:54,890 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 55 transitions, 275 flow [2023-08-03 16:01:54,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.8) internal successors, (504), 5 states have internal predecessors, (504), 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) [2023-08-03 16:01:54,890 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:01:54,890 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 16:01:54,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-03 16:01:54,891 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 16:01:54,891 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:01:54,891 INFO L85 PathProgramCache]: Analyzing trace with hash -489825044, now seen corresponding path program 1 times [2023-08-03 16:01:54,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:01:54,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695326632] [2023-08-03 16:01:54,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:01:54,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:01:54,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:01:54,988 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 16:01:54,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:01:54,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695326632] [2023-08-03 16:01:54,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695326632] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 16:01:54,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 16:01:54,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-03 16:01:54,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967600357] [2023-08-03 16:01:54,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 16:01:54,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 16:01:54,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:01:54,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 16:01:54,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-03 16:01:55,042 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 196 [2023-08-03 16:01:55,042 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 55 transitions, 275 flow. Second operand has 5 states, 5 states have (on average 98.2) internal successors, (491), 5 states have internal predecessors, (491), 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) [2023-08-03 16:01:55,042 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:01:55,043 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 196 [2023-08-03 16:01:55,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:01:55,177 INFO L124 PetriNetUnfolderBase]: 589/1397 cut-off events. [2023-08-03 16:01:55,177 INFO L125 PetriNetUnfolderBase]: For 1050/1061 co-relation queries the response was YES. [2023-08-03 16:01:55,178 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4711 conditions, 1397 events. 589/1397 cut-off events. For 1050/1061 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 8563 event pairs, 235 based on Foata normal form. 20/1399 useless extension candidates. Maximal degree in co-relation 2144. Up to 698 conditions per place. [2023-08-03 16:01:55,182 INFO L140 encePairwiseOnDemand]: 182/196 looper letters, 49 selfloop transitions, 23 changer transitions 8/84 dead transitions. [2023-08-03 16:01:55,182 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 84 transitions, 575 flow [2023-08-03 16:01:55,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 16:01:55,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 16:01:55,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 440 transitions. [2023-08-03 16:01:55,183 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5612244897959183 [2023-08-03 16:01:55,183 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 440 transitions. [2023-08-03 16:01:55,183 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 440 transitions. [2023-08-03 16:01:55,183 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:01:55,184 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 440 transitions. [2023-08-03 16:01:55,184 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 110.0) internal successors, (440), 4 states have internal predecessors, (440), 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) [2023-08-03 16:01:55,185 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 196.0) internal successors, (980), 5 states have internal predecessors, (980), 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) [2023-08-03 16:01:55,185 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 196.0) internal successors, (980), 5 states have internal predecessors, (980), 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) [2023-08-03 16:01:55,185 INFO L175 Difference]: Start difference. First operand has 53 places, 55 transitions, 275 flow. Second operand 4 states and 440 transitions. [2023-08-03 16:01:55,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 84 transitions, 575 flow [2023-08-03 16:01:55,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 84 transitions, 574 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 16:01:55,188 INFO L231 Difference]: Finished difference. Result has 56 places, 60 transitions, 386 flow [2023-08-03 16:01:55,188 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=196, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=386, PETRI_PLACES=56, PETRI_TRANSITIONS=60} [2023-08-03 16:01:55,188 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 14 predicate places. [2023-08-03 16:01:55,189 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 60 transitions, 386 flow [2023-08-03 16:01:55,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 98.2) internal successors, (491), 5 states have internal predecessors, (491), 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) [2023-08-03 16:01:55,189 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:01:55,189 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 16:01:55,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-03 16:01:55,189 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 16:01:55,189 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:01:55,189 INFO L85 PathProgramCache]: Analyzing trace with hash -834643699, now seen corresponding path program 1 times [2023-08-03 16:01:55,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:01:55,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172862138] [2023-08-03 16:01:55,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:01:55,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:01:55,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:01:55,323 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-03 16:01:55,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:01:55,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172862138] [2023-08-03 16:01:55,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172862138] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 16:01:55,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 16:01:55,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-03 16:01:55,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540337775] [2023-08-03 16:01:55,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 16:01:55,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 16:01:55,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:01:55,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 16:01:55,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-03 16:01:55,419 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 196 [2023-08-03 16:01:55,419 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 60 transitions, 386 flow. Second operand has 5 states, 5 states have (on average 100.8) internal successors, (504), 5 states have internal predecessors, (504), 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) [2023-08-03 16:01:55,419 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:01:55,419 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 196 [2023-08-03 16:01:55,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:01:55,496 INFO L124 PetriNetUnfolderBase]: 225/647 cut-off events. [2023-08-03 16:01:55,496 INFO L125 PetriNetUnfolderBase]: For 893/893 co-relation queries the response was YES. [2023-08-03 16:01:55,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2614 conditions, 647 events. 225/647 cut-off events. For 893/893 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 3495 event pairs, 66 based on Foata normal form. 145/787 useless extension candidates. Maximal degree in co-relation 1986. Up to 491 conditions per place. [2023-08-03 16:01:55,498 INFO L140 encePairwiseOnDemand]: 190/196 looper letters, 27 selfloop transitions, 9 changer transitions 31/71 dead transitions. [2023-08-03 16:01:55,498 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 71 transitions, 589 flow [2023-08-03 16:01:55,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 16:01:55,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 16:01:55,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 429 transitions. [2023-08-03 16:01:55,500 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5471938775510204 [2023-08-03 16:01:55,500 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 429 transitions. [2023-08-03 16:01:55,500 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 429 transitions. [2023-08-03 16:01:55,500 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:01:55,500 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 429 transitions. [2023-08-03 16:01:55,501 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 107.25) internal successors, (429), 4 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) [2023-08-03 16:01:55,501 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 196.0) internal successors, (980), 5 states have internal predecessors, (980), 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) [2023-08-03 16:01:55,502 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 196.0) internal successors, (980), 5 states have internal predecessors, (980), 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) [2023-08-03 16:01:55,502 INFO L175 Difference]: Start difference. First operand has 56 places, 60 transitions, 386 flow. Second operand 4 states and 429 transitions. [2023-08-03 16:01:55,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 71 transitions, 589 flow [2023-08-03 16:01:55,503 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 71 transitions, 588 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 16:01:55,504 INFO L231 Difference]: Finished difference. Result has 57 places, 36 transitions, 246 flow [2023-08-03 16:01:55,504 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=196, PETRI_DIFFERENCE_MINUEND_FLOW=381, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=246, PETRI_PLACES=57, PETRI_TRANSITIONS=36} [2023-08-03 16:01:55,504 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 15 predicate places. [2023-08-03 16:01:55,505 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 36 transitions, 246 flow [2023-08-03 16:01:55,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.8) internal successors, (504), 5 states have internal predecessors, (504), 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) [2023-08-03 16:01:55,505 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:01:55,505 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 16:01:55,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-03 16:01:55,505 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 16:01:55,505 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:01:55,505 INFO L85 PathProgramCache]: Analyzing trace with hash -762850377, now seen corresponding path program 1 times [2023-08-03 16:01:55,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:01:55,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370706445] [2023-08-03 16:01:55,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:01:55,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:01:55,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:01:55,598 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 16:01:55,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:01:55,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370706445] [2023-08-03 16:01:55,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370706445] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 16:01:55,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 16:01:55,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-03 16:01:55,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128602461] [2023-08-03 16:01:55,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 16:01:55,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 16:01:55,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:01:55,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 16:01:55,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-03 16:01:55,708 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 196 [2023-08-03 16:01:55,709 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 36 transitions, 246 flow. Second operand has 5 states, 5 states have (on average 102.0) internal successors, (510), 5 states have internal predecessors, (510), 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) [2023-08-03 16:01:55,709 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:01:55,709 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 196 [2023-08-03 16:01:55,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:01:55,779 INFO L124 PetriNetUnfolderBase]: 79/247 cut-off events. [2023-08-03 16:01:55,780 INFO L125 PetriNetUnfolderBase]: For 558/558 co-relation queries the response was YES. [2023-08-03 16:01:55,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1039 conditions, 247 events. 79/247 cut-off events. For 558/558 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1005 event pairs, 47 based on Foata normal form. 2/248 useless extension candidates. Maximal degree in co-relation 615. Up to 142 conditions per place. [2023-08-03 16:01:55,780 INFO L140 encePairwiseOnDemand]: 190/196 looper letters, 0 selfloop transitions, 0 changer transitions 42/42 dead transitions. [2023-08-03 16:01:55,780 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 42 transitions, 359 flow [2023-08-03 16:01:55,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 16:01:55,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 16:01:55,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 426 transitions. [2023-08-03 16:01:55,782 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5433673469387755 [2023-08-03 16:01:55,782 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 426 transitions. [2023-08-03 16:01:55,782 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 426 transitions. [2023-08-03 16:01:55,782 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:01:55,782 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 426 transitions. [2023-08-03 16:01:55,783 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 106.5) internal successors, (426), 4 states have internal predecessors, (426), 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) [2023-08-03 16:01:55,783 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 196.0) internal successors, (980), 5 states have internal predecessors, (980), 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) [2023-08-03 16:01:55,784 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 196.0) internal successors, (980), 5 states have internal predecessors, (980), 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) [2023-08-03 16:01:55,784 INFO L175 Difference]: Start difference. First operand has 57 places, 36 transitions, 246 flow. Second operand 4 states and 426 transitions. [2023-08-03 16:01:55,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 42 transitions, 359 flow [2023-08-03 16:01:55,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 42 transitions, 338 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-03 16:01:55,785 INFO L231 Difference]: Finished difference. Result has 50 places, 0 transitions, 0 flow [2023-08-03 16:01:55,785 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=196, PETRI_DIFFERENCE_MINUEND_FLOW=223, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=50, PETRI_TRANSITIONS=0} [2023-08-03 16:01:55,786 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 8 predicate places. [2023-08-03 16:01:55,786 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 0 transitions, 0 flow [2023-08-03 16:01:55,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 102.0) internal successors, (510), 5 states have internal predecessors, (510), 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) [2023-08-03 16:01:55,786 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-08-03 16:01:55,786 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2023-08-03 16:01:55,787 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-08-03 16:01:55,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-03 16:01:55,787 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 16:01:55,788 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-03 16:01:55,788 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-03 16:01:55,791 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.08 04:01:55 BasicIcfg [2023-08-03 16:01:55,791 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-03 16:01:55,791 INFO L158 Benchmark]: Toolchain (without parser) took 8348.73ms. Allocated memory was 404.8MB in the beginning and 587.2MB in the end (delta: 182.5MB). Free memory was 351.7MB in the beginning and 226.2MB in the end (delta: 125.5MB). Peak memory consumption was 308.4MB. Max. memory is 16.0GB. [2023-08-03 16:01:55,791 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 404.8MB. Free memory is still 353.7MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-03 16:01:55,791 INFO L158 Benchmark]: CACSL2BoogieTranslator took 319.08ms. Allocated memory is still 404.8MB. Free memory was 351.3MB in the beginning and 331.9MB in the end (delta: 19.4MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. [2023-08-03 16:01:55,792 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.11ms. Allocated memory is still 404.8MB. Free memory was 331.9MB in the beginning and 329.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 16:01:55,792 INFO L158 Benchmark]: Boogie Preprocessor took 22.29ms. Allocated memory is still 404.8MB. Free memory was 329.8MB in the beginning and 328.3MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-03 16:01:55,792 INFO L158 Benchmark]: RCFGBuilder took 447.84ms. Allocated memory is still 404.8MB. Free memory was 328.3MB in the beginning and 313.0MB in the end (delta: 15.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. [2023-08-03 16:01:55,792 INFO L158 Benchmark]: TraceAbstraction took 7525.62ms. Allocated memory was 404.8MB in the beginning and 587.2MB in the end (delta: 182.5MB). Free memory was 312.3MB in the beginning and 226.2MB in the end (delta: 86.0MB). Peak memory consumption was 268.6MB. Max. memory is 16.0GB. [2023-08-03 16:01:55,793 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 404.8MB. Free memory is still 353.7MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 319.08ms. Allocated memory is still 404.8MB. Free memory was 351.3MB in the beginning and 331.9MB in the end (delta: 19.4MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 30.11ms. Allocated memory is still 404.8MB. Free memory was 331.9MB in the beginning and 329.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 22.29ms. Allocated memory is still 404.8MB. Free memory was 329.8MB in the beginning and 328.3MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 447.84ms. Allocated memory is still 404.8MB. Free memory was 328.3MB in the beginning and 313.0MB in the end (delta: 15.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. * TraceAbstraction took 7525.62ms. Allocated memory was 404.8MB in the beginning and 587.2MB in the end (delta: 182.5MB). Free memory was 312.3MB in the beginning and 226.2MB in the end (delta: 86.0MB). Peak memory consumption was 268.6MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 231]: Unsoundness Warning unspecified type, defaulting to int C: short [231] - GenericResultAtLocation [Line: 232]: Unsoundness Warning unspecified type, defaulting to int C: short [232] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.8s, 87 PlacesBefore, 28 PlacesAfterwards, 86 TransitionsBefore, 26 TransitionsAfterwards, 1190 CoEnabledTransitionPairs, 6 FixpointIterations, 32 TrivialSequentialCompositions, 30 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 3 ConcurrentYvCompositions, 1 ChoiceCompositions, 66 TotalNumberOfCompositions, 3817 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1325, independent: 1103, independent conditional: 0, independent unconditional: 1103, dependent: 222, dependent conditional: 0, dependent unconditional: 222, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 588, independent: 549, independent conditional: 0, independent unconditional: 549, dependent: 39, dependent conditional: 0, dependent unconditional: 39, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1325, independent: 554, independent conditional: 0, independent unconditional: 554, dependent: 183, dependent conditional: 0, dependent unconditional: 183, unknown: 588, unknown conditional: 0, unknown unconditional: 588] , Statistics on independence cache: Total cache size (in pairs): 71, Positive cache size: 52, Positive conditional cache size: 0, Positive unconditional cache size: 52, Negative cache size: 19, Negative conditional cache size: 0, Negative unconditional cache size: 19, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.9s, 107 PlacesBefore, 42 PlacesAfterwards, 104 TransitionsBefore, 38 TransitionsAfterwards, 2992 CoEnabledTransitionPairs, 7 FixpointIterations, 32 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 3 ConcurrentYvCompositions, 1 ChoiceCompositions, 71 TotalNumberOfCompositions, 12218 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3023, independent: 2626, independent conditional: 0, independent unconditional: 2626, dependent: 397, dependent conditional: 0, dependent unconditional: 397, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1373, independent: 1300, independent conditional: 0, independent unconditional: 1300, dependent: 73, dependent conditional: 0, dependent unconditional: 73, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3023, independent: 1326, independent conditional: 0, independent unconditional: 1326, dependent: 324, dependent conditional: 0, dependent unconditional: 324, unknown: 1373, unknown conditional: 0, unknown unconditional: 1373] , Statistics on independence cache: Total cache size (in pairs): 151, Positive cache size: 105, Positive conditional cache size: 0, Positive unconditional cache size: 105, Negative cache size: 46, Negative conditional cache size: 0, Negative unconditional cache size: 46, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 120 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: 2.3s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 22 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 12 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 44 IncrementalHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 0 mSDtfsCounter, 44 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=61occurred in iteration=1, InterpolantAutomatonStates: 3, 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, 0.1s InterpolantComputationTime, 10 NumberOfCodeBlocks, 10 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 3 ConstructedInterpolants, 0 QuantifiedInterpolants, 5 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 - StatisticsResult: Ultimate Automizer benchmark data with 2 thread instances CFG has 4 procedures, 138 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: 5.1s, OverallIterations: 9, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 639 SdHoareTripleChecker+Valid, 0.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 381 mSDsluCounter, 39 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 26 mSDsCounter, 205 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1158 IncrementalHoareTripleChecker+Invalid, 1363 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 205 mSolverCounterUnsat, 13 mSDtfsCounter, 1158 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 61 GetRequests, 37 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=386occurred in iteration=7, InterpolantAutomatonStates: 34, 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, 0.7s InterpolantComputationTime, 156 NumberOfCodeBlocks, 156 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 152 ConstructedInterpolants, 0 QuantifiedInterpolants, 709 SizeOfPredicates, 0 NumberOfNonLiveVariables, 265 ConjunctsInSsa, 7 ConjunctsInUnsatCore, 12 InterpolantComputations, 8 PerfectInterpolantSequences, 47/55 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-03 16:01:55,815 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...