/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/weaver_chl-match-trans.wvr_bound2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 19:40:07,115 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 19:40:07,176 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 19:40:07,180 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 19:40:07,181 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 19:40:07,181 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 19:40:07,181 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 19:40:07,202 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 19:40:07,202 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 19:40:07,205 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 19:40:07,205 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 19:40:07,205 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 19:40:07,206 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 19:40:07,207 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 19:40:07,207 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 19:40:07,207 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 19:40:07,207 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 19:40:07,208 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 19:40:07,208 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 19:40:07,208 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 19:40:07,208 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 19:40:07,208 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 19:40:07,208 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 19:40:07,209 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 19:40:07,209 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 19:40:07,209 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 19:40:07,210 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 19:40:07,210 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 19:40:07,210 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 19:40:07,210 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 19:40:07,211 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 19:40:07,211 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 19:40:07,211 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 19:40:07,211 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 19:40:07,211 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 19:40:07,212 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 19:40:07,212 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 19:40:07,212 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 19:40:07,212 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 19:40:07,212 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 19:40:07,212 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 19:40:07,212 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> TOGETHER [2023-08-03 19:40:07,398 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 19:40:07,410 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 19:40:07,411 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 19:40:07,412 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 19:40:07,414 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 19:40:07,415 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/weaver_chl-match-trans.wvr_bound2.c [2023-08-03 19:40:08,298 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 19:40:08,468 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 19:40:08,469 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/weaver_chl-match-trans.wvr_bound2.c [2023-08-03 19:40:08,474 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9748607a5/f1a0d105686d444d8be1cda86b4121de/FLAGa8545dadb [2023-08-03 19:40:08,483 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9748607a5/f1a0d105686d444d8be1cda86b4121de [2023-08-03 19:40:08,484 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 19:40:08,485 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 19:40:08,486 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 19:40:08,486 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 19:40:08,488 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 19:40:08,489 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 07:40:08" (1/1) ... [2023-08-03 19:40:08,489 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@bddd2c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:40:08, skipping insertion in model container [2023-08-03 19:40:08,489 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 07:40:08" (1/1) ... [2023-08-03 19:40:08,503 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 19:40:08,643 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/weaver_chl-match-trans.wvr_bound2.c[3197,3210] [2023-08-03 19:40:08,650 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 19:40:08,658 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 19:40:08,690 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/weaver_chl-match-trans.wvr_bound2.c[3197,3210] [2023-08-03 19:40:08,691 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 19:40:08,701 INFO L206 MainTranslator]: Completed translation [2023-08-03 19:40:08,701 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:40:08 WrapperNode [2023-08-03 19:40:08,701 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 19:40:08,702 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 19:40:08,702 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 19:40:08,702 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 19:40:08,707 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:40:08" (1/1) ... [2023-08-03 19:40:08,721 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:40:08" (1/1) ... [2023-08-03 19:40:08,752 INFO L138 Inliner]: procedures = 23, calls = 33, calls flagged for inlining = 11, calls inlined = 21, statements flattened = 259 [2023-08-03 19:40:08,753 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 19:40:08,753 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 19:40:08,753 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 19:40:08,753 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 19:40:08,759 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:40:08" (1/1) ... [2023-08-03 19:40:08,759 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:40:08" (1/1) ... [2023-08-03 19:40:08,762 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:40:08" (1/1) ... [2023-08-03 19:40:08,762 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:40:08" (1/1) ... [2023-08-03 19:40:08,766 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:40:08" (1/1) ... [2023-08-03 19:40:08,768 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:40:08" (1/1) ... [2023-08-03 19:40:08,769 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:40:08" (1/1) ... [2023-08-03 19:40:08,770 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:40:08" (1/1) ... [2023-08-03 19:40:08,772 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 19:40:08,773 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 19:40:08,773 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 19:40:08,773 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 19:40:08,773 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:40:08" (1/1) ... [2023-08-03 19:40:08,779 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 19:40:08,794 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:40:08,807 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 19:40:08,811 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 19:40:08,830 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 19:40:08,830 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-03 19:40:08,830 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-03 19:40:08,830 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-03 19:40:08,830 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-03 19:40:08,830 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-03 19:40:08,831 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-03 19:40:08,831 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 19:40:08,831 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 19:40:08,831 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 19:40:08,831 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 19:40:08,832 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 19:40:08,832 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-03 19:40:08,832 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 19:40:08,833 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 19:40:08,911 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 19:40:08,912 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 19:40:09,189 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 19:40:09,195 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 19:40:09,195 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-08-03 19:40:09,197 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 07:40:09 BoogieIcfgContainer [2023-08-03 19:40:09,197 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 19:40:09,198 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 19:40:09,199 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 19:40:09,200 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 19:40:09,201 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 07:40:08" (1/3) ... [2023-08-03 19:40:09,201 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e20a2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 07:40:09, skipping insertion in model container [2023-08-03 19:40:09,201 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:40:08" (2/3) ... [2023-08-03 19:40:09,201 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e20a2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 07:40:09, skipping insertion in model container [2023-08-03 19:40:09,201 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 07:40:09" (3/3) ... [2023-08-03 19:40:09,202 INFO L112 eAbstractionObserver]: Analyzing ICFG weaver_chl-match-trans.wvr_bound2.c [2023-08-03 19:40:09,207 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 19:40:09,213 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 19:40:09,213 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-03 19:40:09,213 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 19:40:09,300 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-08-03 19:40:09,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 276 places, 297 transitions, 636 flow [2023-08-03 19:40:09,566 INFO L124 PetriNetUnfolderBase]: 110/913 cut-off events. [2023-08-03 19:40:09,567 INFO L125 PetriNetUnfolderBase]: For 36/72 co-relation queries the response was YES. [2023-08-03 19:40:09,580 INFO L83 FinitePrefix]: Finished finitePrefix Result has 974 conditions, 913 events. 110/913 cut-off events. For 36/72 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 5268 event pairs, 0 based on Foata normal form. 0/778 useless extension candidates. Maximal degree in co-relation 469. Up to 16 conditions per place. [2023-08-03 19:40:09,580 INFO L82 GeneralOperation]: Start removeDead. Operand has 276 places, 297 transitions, 636 flow [2023-08-03 19:40:09,589 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 276 places, 297 transitions, 636 flow [2023-08-03 19:40:09,592 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 19:40:09,600 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 276 places, 297 transitions, 636 flow [2023-08-03 19:40:09,604 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 276 places, 297 transitions, 636 flow [2023-08-03 19:40:09,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 276 places, 297 transitions, 636 flow [2023-08-03 19:40:09,706 INFO L124 PetriNetUnfolderBase]: 110/913 cut-off events. [2023-08-03 19:40:09,707 INFO L125 PetriNetUnfolderBase]: For 36/72 co-relation queries the response was YES. [2023-08-03 19:40:09,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 974 conditions, 913 events. 110/913 cut-off events. For 36/72 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 5268 event pairs, 0 based on Foata normal form. 0/778 useless extension candidates. Maximal degree in co-relation 469. Up to 16 conditions per place. [2023-08-03 19:40:09,741 INFO L119 LiptonReduction]: Number of co-enabled transitions 34968 [2023-08-03 19:40:16,193 INFO L134 LiptonReduction]: Checked pairs total: 36735 [2023-08-03 19:40:16,194 INFO L136 LiptonReduction]: Total number of compositions: 318 [2023-08-03 19:40:16,203 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 19:40:16,206 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;@19e4f723, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 19:40:16,206 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-03 19:40:16,210 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 19:40:16,210 INFO L124 PetriNetUnfolderBase]: 0/26 cut-off events. [2023-08-03 19:40:16,210 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 19:40:16,210 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:40:16,210 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-03 19:40:16,210 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:40:16,213 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:40:16,213 INFO L85 PathProgramCache]: Analyzing trace with hash 611348083, now seen corresponding path program 1 times [2023-08-03 19:40:16,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:40:16,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074549763] [2023-08-03 19:40:16,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:40:16,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:40:16,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 19:40:16,326 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 19:40:16,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 19:40:16,377 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 19:40:16,378 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 19:40:16,379 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2023-08-03 19:40:16,380 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2023-08-03 19:40:16,381 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-03 19:40:16,381 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-03 19:40:16,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 19:40:16,381 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-03 19:40:16,385 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 19:40:16,385 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 19:40:16,436 INFO L144 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2023-08-03 19:40:16,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 414 places, 450 transitions, 990 flow [2023-08-03 19:40:17,480 INFO L124 PetriNetUnfolderBase]: 938/5105 cut-off events. [2023-08-03 19:40:17,480 INFO L125 PetriNetUnfolderBase]: For 602/926 co-relation queries the response was YES. [2023-08-03 19:40:17,610 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5779 conditions, 5105 events. 938/5105 cut-off events. For 602/926 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 44625 event pairs, 26 based on Foata normal form. 0/4291 useless extension candidates. Maximal degree in co-relation 3089. Up to 192 conditions per place. [2023-08-03 19:40:17,610 INFO L82 GeneralOperation]: Start removeDead. Operand has 414 places, 450 transitions, 990 flow [2023-08-03 19:40:17,640 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 414 places, 450 transitions, 990 flow [2023-08-03 19:40:17,641 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 19:40:17,641 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 414 places, 450 transitions, 990 flow [2023-08-03 19:40:17,641 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 414 places, 450 transitions, 990 flow [2023-08-03 19:40:17,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 414 places, 450 transitions, 990 flow [2023-08-03 19:40:18,549 INFO L124 PetriNetUnfolderBase]: 938/5105 cut-off events. [2023-08-03 19:40:18,550 INFO L125 PetriNetUnfolderBase]: For 602/926 co-relation queries the response was YES. [2023-08-03 19:40:18,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5779 conditions, 5105 events. 938/5105 cut-off events. For 602/926 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 44625 event pairs, 26 based on Foata normal form. 0/4291 useless extension candidates. Maximal degree in co-relation 3089. Up to 192 conditions per place. [2023-08-03 19:40:18,790 INFO L119 LiptonReduction]: Number of co-enabled transitions 115620 [2023-08-03 19:40:28,941 INFO L134 LiptonReduction]: Checked pairs total: 131374 [2023-08-03 19:40:28,941 INFO L136 LiptonReduction]: Total number of compositions: 510 [2023-08-03 19:40:28,942 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 19:40:28,943 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;@19e4f723, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 19:40:28,943 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-03 19:40:28,945 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 19:40:28,945 INFO L124 PetriNetUnfolderBase]: 0/26 cut-off events. [2023-08-03 19:40:28,945 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-03 19:40:28,945 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:40:28,946 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:40:28,946 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:40:28,946 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:40:28,946 INFO L85 PathProgramCache]: Analyzing trace with hash -2111481892, now seen corresponding path program 1 times [2023-08-03 19:40:28,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:40:28,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958727434] [2023-08-03 19:40:28,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:40:28,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:40:28,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:40:29,018 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 19:40:29,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:40:29,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958727434] [2023-08-03 19:40:29,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958727434] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:40:29,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 19:40:29,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 19:40:29,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832090215] [2023-08-03 19:40:29,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:40:29,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 19:40:29,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:40:29,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 19:40:29,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 19:40:29,050 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 390 out of 960 [2023-08-03 19:40:29,057 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 59 transitions, 208 flow. Second operand has 3 states, 3 states have (on average 392.3333333333333) internal successors, (1177), 3 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states 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 19:40:29,058 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:40:29,058 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 390 of 960 [2023-08-03 19:40:29,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:40:31,371 INFO L124 PetriNetUnfolderBase]: 19931/29965 cut-off events. [2023-08-03 19:40:31,371 INFO L125 PetriNetUnfolderBase]: For 7068/7068 co-relation queries the response was YES. [2023-08-03 19:40:31,411 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62896 conditions, 29965 events. 19931/29965 cut-off events. For 7068/7068 co-relation queries the response was YES. Maximal size of possible extension queue 676. Compared 187951 event pairs, 13302 based on Foata normal form. 0/27397 useless extension candidates. Maximal degree in co-relation 25306. Up to 28006 conditions per place. [2023-08-03 19:40:31,493 INFO L140 encePairwiseOnDemand]: 956/960 looper letters, 50 selfloop transitions, 2 changer transitions 0/61 dead transitions. [2023-08-03 19:40:31,493 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 61 transitions, 316 flow [2023-08-03 19:40:31,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 19:40:31,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 19:40:31,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1224 transitions. [2023-08-03 19:40:31,508 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.425 [2023-08-03 19:40:31,509 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1224 transitions. [2023-08-03 19:40:31,509 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1224 transitions. [2023-08-03 19:40:31,512 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:40:31,513 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1224 transitions. [2023-08-03 19:40:31,518 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 408.0) internal successors, (1224), 3 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states 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 19:40:31,525 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 960.0) internal successors, (3840), 4 states have internal predecessors, (3840), 0 states have call successors, (0), 0 states 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 19:40:31,526 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 960.0) internal successors, (3840), 4 states have internal predecessors, (3840), 0 states have call successors, (0), 0 states 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 19:40:31,528 INFO L175 Difference]: Start difference. First operand has 54 places, 59 transitions, 208 flow. Second operand 3 states and 1224 transitions. [2023-08-03 19:40:31,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 61 transitions, 316 flow [2023-08-03 19:40:31,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 61 transitions, 316 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 19:40:31,544 INFO L231 Difference]: Finished difference. Result has 56 places, 59 transitions, 218 flow [2023-08-03 19:40:31,546 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=960, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=218, PETRI_PLACES=56, PETRI_TRANSITIONS=59} [2023-08-03 19:40:31,549 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 2 predicate places. [2023-08-03 19:40:31,550 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 59 transitions, 218 flow [2023-08-03 19:40:31,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 392.3333333333333) internal successors, (1177), 3 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states 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 19:40:31,550 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:40:31,550 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-03 19:40:31,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-03 19:40:31,552 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:40:31,553 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:40:31,554 INFO L85 PathProgramCache]: Analyzing trace with hash 599828617, now seen corresponding path program 1 times [2023-08-03 19:40:31,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:40:31,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918815697] [2023-08-03 19:40:31,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:40:31,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:40:31,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:40:31,648 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 19:40:31,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:40:31,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918815697] [2023-08-03 19:40:31,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918815697] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:40:31,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [993497884] [2023-08-03 19:40:31,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:40:31,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:40:31,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:40:31,652 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 19:40:31,670 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 19:40:31,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:40:31,747 INFO L262 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 19:40:31,748 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:40:31,796 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 19:40:31,796 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:40:31,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [993497884] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:40:31,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 19:40:31,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-08-03 19:40:31,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211998353] [2023-08-03 19:40:31,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:40:31,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:40:31,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:40:31,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:40:31,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 19:40:31,813 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 389 out of 960 [2023-08-03 19:40:31,815 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 59 transitions, 218 flow. Second operand has 5 states, 5 states have (on average 390.6) internal successors, (1953), 5 states have internal predecessors, (1953), 0 states have call successors, (0), 0 states 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 19:40:31,815 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:40:31,815 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 389 of 960 [2023-08-03 19:40:31,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:40:34,234 INFO L124 PetriNetUnfolderBase]: 19927/29957 cut-off events. [2023-08-03 19:40:34,234 INFO L125 PetriNetUnfolderBase]: For 7062/7062 co-relation queries the response was YES. [2023-08-03 19:40:34,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62893 conditions, 29957 events. 19927/29957 cut-off events. For 7062/7062 co-relation queries the response was YES. Maximal size of possible extension queue 676. Compared 187903 event pairs, 10644 based on Foata normal form. 4/27401 useless extension candidates. Maximal degree in co-relation 38021. Up to 27985 conditions per place. [2023-08-03 19:40:34,351 INFO L140 encePairwiseOnDemand]: 956/960 looper letters, 51 selfloop transitions, 4 changer transitions 0/63 dead transitions. [2023-08-03 19:40:34,351 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 63 transitions, 334 flow [2023-08-03 19:40:34,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 19:40:34,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 19:40:34,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2001 transitions. [2023-08-03 19:40:34,356 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.416875 [2023-08-03 19:40:34,356 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2001 transitions. [2023-08-03 19:40:34,356 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2001 transitions. [2023-08-03 19:40:34,357 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:40:34,357 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2001 transitions. [2023-08-03 19:40:34,360 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 400.2) internal successors, (2001), 5 states have internal predecessors, (2001), 0 states have call successors, (0), 0 states 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 19:40:34,366 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 960.0) internal successors, (5760), 6 states have internal predecessors, (5760), 0 states have call successors, (0), 0 states 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 19:40:34,367 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 960.0) internal successors, (5760), 6 states have internal predecessors, (5760), 0 states have call successors, (0), 0 states 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 19:40:34,367 INFO L175 Difference]: Start difference. First operand has 56 places, 59 transitions, 218 flow. Second operand 5 states and 2001 transitions. [2023-08-03 19:40:34,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 63 transitions, 334 flow [2023-08-03 19:40:34,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 63 transitions, 324 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-03 19:40:34,375 INFO L231 Difference]: Finished difference. Result has 58 places, 59 transitions, 223 flow [2023-08-03 19:40:34,376 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=960, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=223, PETRI_PLACES=58, PETRI_TRANSITIONS=59} [2023-08-03 19:40:34,376 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 4 predicate places. [2023-08-03 19:40:34,376 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 59 transitions, 223 flow [2023-08-03 19:40:34,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 390.6) internal successors, (1953), 5 states have internal predecessors, (1953), 0 states have call successors, (0), 0 states 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 19:40:34,377 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:40:34,377 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:40:34,388 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-03 19:40:34,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:40:34,582 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:40:34,582 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:40:34,582 INFO L85 PathProgramCache]: Analyzing trace with hash -1898552938, now seen corresponding path program 1 times [2023-08-03 19:40:34,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:40:34,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998460975] [2023-08-03 19:40:34,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:40:34,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:40:34,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:40:34,651 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 19:40:34,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:40:34,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998460975] [2023-08-03 19:40:34,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998460975] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:40:34,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1686497019] [2023-08-03 19:40:34,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:40:34,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:40:34,653 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:40:34,654 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 19:40:34,656 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 19:40:34,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:40:34,721 INFO L262 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 19:40:34,722 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:40:34,728 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-03 19:40:34,728 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:40:34,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1686497019] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:40:34,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 19:40:34,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-03 19:40:34,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499907688] [2023-08-03 19:40:34,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:40:34,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 19:40:34,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:40:34,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 19:40:34,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:40:34,739 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 390 out of 960 [2023-08-03 19:40:34,740 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 59 transitions, 223 flow. Second operand has 3 states, 3 states have (on average 393.3333333333333) internal successors, (1180), 3 states have internal predecessors, (1180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:40:34,740 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:40:34,740 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 390 of 960 [2023-08-03 19:40:34,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:40:37,086 INFO L124 PetriNetUnfolderBase]: 19713/29593 cut-off events. [2023-08-03 19:40:37,086 INFO L125 PetriNetUnfolderBase]: For 5755/5755 co-relation queries the response was YES. [2023-08-03 19:40:37,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61461 conditions, 29593 events. 19713/29593 cut-off events. For 5755/5755 co-relation queries the response was YES. Maximal size of possible extension queue 706. Compared 185527 event pairs, 13225 based on Foata normal form. 0/27105 useless extension candidates. Maximal degree in co-relation 26842. Up to 27624 conditions per place. [2023-08-03 19:40:37,193 INFO L140 encePairwiseOnDemand]: 957/960 looper letters, 53 selfloop transitions, 3 changer transitions 0/64 dead transitions. [2023-08-03 19:40:37,193 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 64 transitions, 345 flow [2023-08-03 19:40:37,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 19:40:37,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 19:40:37,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1225 transitions. [2023-08-03 19:40:37,196 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4253472222222222 [2023-08-03 19:40:37,196 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1225 transitions. [2023-08-03 19:40:37,196 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1225 transitions. [2023-08-03 19:40:37,197 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:40:37,197 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1225 transitions. [2023-08-03 19:40:37,199 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 408.3333333333333) internal successors, (1225), 3 states have internal predecessors, (1225), 0 states have call successors, (0), 0 states 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 19:40:37,202 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 960.0) internal successors, (3840), 4 states have internal predecessors, (3840), 0 states have call successors, (0), 0 states 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 19:40:37,203 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 960.0) internal successors, (3840), 4 states have internal predecessors, (3840), 0 states have call successors, (0), 0 states 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 19:40:37,203 INFO L175 Difference]: Start difference. First operand has 58 places, 59 transitions, 223 flow. Second operand 3 states and 1225 transitions. [2023-08-03 19:40:37,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 64 transitions, 345 flow [2023-08-03 19:40:37,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 64 transitions, 338 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-03 19:40:37,208 INFO L231 Difference]: Finished difference. Result has 59 places, 60 transitions, 231 flow [2023-08-03 19:40:37,208 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=960, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=231, PETRI_PLACES=59, PETRI_TRANSITIONS=60} [2023-08-03 19:40:37,208 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 5 predicate places. [2023-08-03 19:40:37,208 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 60 transitions, 231 flow [2023-08-03 19:40:37,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 393.3333333333333) internal successors, (1180), 3 states have internal predecessors, (1180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:40:37,209 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:40:37,209 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:40:37,214 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-03 19:40:37,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-08-03 19:40:37,415 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:40:37,415 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:40:37,415 INFO L85 PathProgramCache]: Analyzing trace with hash -1899759804, now seen corresponding path program 1 times [2023-08-03 19:40:37,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:40:37,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068798479] [2023-08-03 19:40:37,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:40:37,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:40:37,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:40:37,468 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-03 19:40:37,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:40:37,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068798479] [2023-08-03 19:40:37,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068798479] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:40:37,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1465394878] [2023-08-03 19:40:37,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:40:37,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:40:37,469 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:40:37,470 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:40:37,472 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-03 19:40:37,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:40:37,533 INFO L262 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 19:40:37,534 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:40:37,544 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-03 19:40:37,544 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:40:37,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1465394878] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:40:37,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 19:40:37,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-03 19:40:37,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996012981] [2023-08-03 19:40:37,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:40:37,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 19:40:37,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:40:37,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 19:40:37,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:40:37,552 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 390 out of 960 [2023-08-03 19:40:37,553 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 60 transitions, 231 flow. Second operand has 3 states, 3 states have (on average 394.3333333333333) internal successors, (1183), 3 states have internal predecessors, (1183), 0 states have call successors, (0), 0 states 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 19:40:37,553 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:40:37,553 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 390 of 960 [2023-08-03 19:40:37,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:40:40,159 INFO L124 PetriNetUnfolderBase]: 19677/29839 cut-off events. [2023-08-03 19:40:40,159 INFO L125 PetriNetUnfolderBase]: For 4226/4226 co-relation queries the response was YES. [2023-08-03 19:40:40,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61755 conditions, 29839 events. 19677/29839 cut-off events. For 4226/4226 co-relation queries the response was YES. Maximal size of possible extension queue 791. Compared 190419 event pairs, 13170 based on Foata normal form. 0/27435 useless extension candidates. Maximal degree in co-relation 26912. Up to 27248 conditions per place. [2023-08-03 19:40:40,278 INFO L140 encePairwiseOnDemand]: 957/960 looper letters, 57 selfloop transitions, 2 changer transitions 0/67 dead transitions. [2023-08-03 19:40:40,278 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 67 transitions, 363 flow [2023-08-03 19:40:40,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 19:40:40,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 19:40:40,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1227 transitions. [2023-08-03 19:40:40,281 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42604166666666665 [2023-08-03 19:40:40,281 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1227 transitions. [2023-08-03 19:40:40,281 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1227 transitions. [2023-08-03 19:40:40,281 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:40:40,281 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1227 transitions. [2023-08-03 19:40:40,283 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 409.0) internal successors, (1227), 3 states have internal predecessors, (1227), 0 states have call successors, (0), 0 states 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 19:40:40,286 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 960.0) internal successors, (3840), 4 states have internal predecessors, (3840), 0 states have call successors, (0), 0 states 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 19:40:40,287 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 960.0) internal successors, (3840), 4 states have internal predecessors, (3840), 0 states have call successors, (0), 0 states 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 19:40:40,287 INFO L175 Difference]: Start difference. First operand has 59 places, 60 transitions, 231 flow. Second operand 3 states and 1227 transitions. [2023-08-03 19:40:40,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 67 transitions, 363 flow [2023-08-03 19:40:40,291 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 67 transitions, 360 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 19:40:40,292 INFO L231 Difference]: Finished difference. Result has 61 places, 61 transitions, 240 flow [2023-08-03 19:40:40,292 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=960, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=240, PETRI_PLACES=61, PETRI_TRANSITIONS=61} [2023-08-03 19:40:40,293 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 7 predicate places. [2023-08-03 19:40:40,293 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 61 transitions, 240 flow [2023-08-03 19:40:40,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 394.3333333333333) internal successors, (1183), 3 states have internal predecessors, (1183), 0 states have call successors, (0), 0 states 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 19:40:40,294 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:40:40,294 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:40:40,300 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-08-03 19:40:40,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:40:40,498 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:40:40,498 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:40:40,498 INFO L85 PathProgramCache]: Analyzing trace with hash -1133684458, now seen corresponding path program 1 times [2023-08-03 19:40:40,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:40:40,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578427770] [2023-08-03 19:40:40,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:40:40,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:40:40,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:40:40,537 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-03 19:40:40,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:40:40,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578427770] [2023-08-03 19:40:40,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578427770] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:40:40,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [944139042] [2023-08-03 19:40:40,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:40:40,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:40:40,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:40:40,545 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:40:40,546 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-03 19:40:40,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:40:40,619 INFO L262 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 19:40:40,620 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:40:40,631 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-03 19:40:40,631 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:40:40,647 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-03 19:40:40,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [944139042] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:40:40,648 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:40:40,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-03 19:40:40,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579990212] [2023-08-03 19:40:40,648 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:40:40,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:40:40,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:40:40,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:40:40,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:40:40,661 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 389 out of 960 [2023-08-03 19:40:40,663 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 61 transitions, 240 flow. Second operand has 5 states, 5 states have (on average 391.6) internal successors, (1958), 5 states have internal predecessors, (1958), 0 states have call successors, (0), 0 states 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 19:40:40,663 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:40:40,663 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 389 of 960 [2023-08-03 19:40:40,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:40:42,927 INFO L124 PetriNetUnfolderBase]: 19097/28909 cut-off events. [2023-08-03 19:40:42,927 INFO L125 PetriNetUnfolderBase]: For 4369/4369 co-relation queries the response was YES. [2023-08-03 19:40:43,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60116 conditions, 28909 events. 19097/28909 cut-off events. For 4369/4369 co-relation queries the response was YES. Maximal size of possible extension queue 809. Compared 182913 event pairs, 10459 based on Foata normal form. 2/26723 useless extension candidates. Maximal degree in co-relation 23254. Up to 26756 conditions per place. [2023-08-03 19:40:43,080 INFO L140 encePairwiseOnDemand]: 957/960 looper letters, 53 selfloop transitions, 3 changer transitions 0/64 dead transitions. [2023-08-03 19:40:43,080 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 64 transitions, 354 flow [2023-08-03 19:40:43,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 19:40:43,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 19:40:43,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1611 transitions. [2023-08-03 19:40:43,084 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41953125 [2023-08-03 19:40:43,084 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1611 transitions. [2023-08-03 19:40:43,084 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1611 transitions. [2023-08-03 19:40:43,084 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:40:43,084 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1611 transitions. [2023-08-03 19:40:43,087 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 402.75) internal successors, (1611), 4 states have internal predecessors, (1611), 0 states have call successors, (0), 0 states 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 19:40:43,091 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 960.0) internal successors, (4800), 5 states have internal predecessors, (4800), 0 states have call successors, (0), 0 states 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 19:40:43,092 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 960.0) internal successors, (4800), 5 states have internal predecessors, (4800), 0 states have call successors, (0), 0 states 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 19:40:43,092 INFO L175 Difference]: Start difference. First operand has 61 places, 61 transitions, 240 flow. Second operand 4 states and 1611 transitions. [2023-08-03 19:40:43,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 64 transitions, 354 flow [2023-08-03 19:40:43,097 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 64 transitions, 352 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 19:40:43,098 INFO L231 Difference]: Finished difference. Result has 63 places, 60 transitions, 236 flow [2023-08-03 19:40:43,098 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=960, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=236, PETRI_PLACES=63, PETRI_TRANSITIONS=60} [2023-08-03 19:40:43,099 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 9 predicate places. [2023-08-03 19:40:43,099 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 60 transitions, 236 flow [2023-08-03 19:40:43,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 391.6) internal successors, (1958), 5 states have internal predecessors, (1958), 0 states have call successors, (0), 0 states 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 19:40:43,100 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:40:43,100 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:40:43,104 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-08-03 19:40:43,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:40:43,304 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:40:43,305 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:40:43,305 INFO L85 PathProgramCache]: Analyzing trace with hash 1527802427, now seen corresponding path program 1 times [2023-08-03 19:40:43,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:40:43,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795662718] [2023-08-03 19:40:43,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:40:43,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:40:43,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:40:43,377 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 19:40:43,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:40:43,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795662718] [2023-08-03 19:40:43,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795662718] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:40:43,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1080046494] [2023-08-03 19:40:43,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:40:43,378 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:40:43,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:40:43,379 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:40:43,381 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-03 19:40:43,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:40:43,447 INFO L262 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 19:40:43,449 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:40:43,470 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 19:40:43,470 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:40:43,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1080046494] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:40:43,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 19:40:43,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2023-08-03 19:40:43,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180970580] [2023-08-03 19:40:43,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:40:43,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:40:43,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:40:43,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:40:43,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 19:40:43,486 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 389 out of 960 [2023-08-03 19:40:43,487 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 60 transitions, 236 flow. Second operand has 5 states, 5 states have (on average 391.6) internal successors, (1958), 5 states have internal predecessors, (1958), 0 states have call successors, (0), 0 states 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 19:40:43,487 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:40:43,487 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 389 of 960 [2023-08-03 19:40:43,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:40:45,463 INFO L124 PetriNetUnfolderBase]: 19065/28853 cut-off events. [2023-08-03 19:40:45,463 INFO L125 PetriNetUnfolderBase]: For 4289/4289 co-relation queries the response was YES. [2023-08-03 19:40:45,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59955 conditions, 28853 events. 19065/28853 cut-off events. For 4289/4289 co-relation queries the response was YES. Maximal size of possible extension queue 809. Compared 182589 event pairs, 5351 based on Foata normal form. 16/26681 useless extension candidates. Maximal degree in co-relation 36723. Up to 26587 conditions per place. [2023-08-03 19:40:45,603 INFO L140 encePairwiseOnDemand]: 956/960 looper letters, 59 selfloop transitions, 4 changer transitions 0/70 dead transitions. [2023-08-03 19:40:45,603 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 70 transitions, 382 flow [2023-08-03 19:40:45,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 19:40:45,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 19:40:45,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2007 transitions. [2023-08-03 19:40:45,607 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.418125 [2023-08-03 19:40:45,607 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2007 transitions. [2023-08-03 19:40:45,607 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2007 transitions. [2023-08-03 19:40:45,608 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:40:45,608 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2007 transitions. [2023-08-03 19:40:45,610 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 401.4) internal successors, (2007), 5 states have internal predecessors, (2007), 0 states have call successors, (0), 0 states 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 19:40:45,614 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 960.0) internal successors, (5760), 6 states have internal predecessors, (5760), 0 states have call successors, (0), 0 states 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 19:40:45,615 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 960.0) internal successors, (5760), 6 states have internal predecessors, (5760), 0 states have call successors, (0), 0 states 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 19:40:45,615 INFO L175 Difference]: Start difference. First operand has 63 places, 60 transitions, 236 flow. Second operand 5 states and 2007 transitions. [2023-08-03 19:40:45,615 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 70 transitions, 382 flow [2023-08-03 19:40:45,619 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 70 transitions, 368 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-03 19:40:45,620 INFO L231 Difference]: Finished difference. Result has 63 places, 60 transitions, 239 flow [2023-08-03 19:40:45,620 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=960, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=239, PETRI_PLACES=63, PETRI_TRANSITIONS=60} [2023-08-03 19:40:45,620 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 9 predicate places. [2023-08-03 19:40:45,620 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 60 transitions, 239 flow [2023-08-03 19:40:45,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 391.6) internal successors, (1958), 5 states have internal predecessors, (1958), 0 states have call successors, (0), 0 states 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 19:40:45,621 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:40:45,621 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] [2023-08-03 19:40:45,628 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-03 19:40:45,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:40:45,825 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:40:45,826 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:40:45,826 INFO L85 PathProgramCache]: Analyzing trace with hash -1150754930, now seen corresponding path program 1 times [2023-08-03 19:40:45,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:40:45,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046232388] [2023-08-03 19:40:45,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:40:45,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:40:45,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:40:45,857 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-03 19:40:45,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:40:45,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046232388] [2023-08-03 19:40:45,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046232388] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:40:45,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [979614179] [2023-08-03 19:40:45,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:40:45,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:40:45,858 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:40:45,859 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:40:45,861 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-03 19:40:45,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:40:45,933 INFO L262 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 19:40:45,934 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:40:45,943 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-03 19:40:45,943 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:40:45,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [979614179] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:40:45,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 19:40:45,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-08-03 19:40:45,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180003320] [2023-08-03 19:40:45,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:40:45,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 19:40:45,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:40:45,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 19:40:45,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:40:45,952 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 390 out of 960 [2023-08-03 19:40:45,953 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 60 transitions, 239 flow. Second operand has 3 states, 3 states have (on average 395.6666666666667) internal successors, (1187), 3 states have internal predecessors, (1187), 0 states have call successors, (0), 0 states 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 19:40:45,953 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:40:45,953 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 390 of 960 [2023-08-03 19:40:45,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:40:47,818 INFO L124 PetriNetUnfolderBase]: 17593/26805 cut-off events. [2023-08-03 19:40:47,818 INFO L125 PetriNetUnfolderBase]: For 3446/3446 co-relation queries the response was YES. [2023-08-03 19:40:47,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55292 conditions, 26805 events. 17593/26805 cut-off events. For 3446/3446 co-relation queries the response was YES. Maximal size of possible extension queue 854. Compared 170490 event pairs, 12582 based on Foata normal form. 0/24809 useless extension candidates. Maximal degree in co-relation 34289. Up to 22628 conditions per place. [2023-08-03 19:40:47,943 INFO L140 encePairwiseOnDemand]: 957/960 looper letters, 65 selfloop transitions, 2 changer transitions 0/74 dead transitions. [2023-08-03 19:40:47,943 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 74 transitions, 415 flow [2023-08-03 19:40:47,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 19:40:47,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 19:40:47,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1234 transitions. [2023-08-03 19:40:47,946 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4284722222222222 [2023-08-03 19:40:47,946 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1234 transitions. [2023-08-03 19:40:47,946 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1234 transitions. [2023-08-03 19:40:47,946 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:40:47,946 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1234 transitions. [2023-08-03 19:40:47,948 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 411.3333333333333) internal successors, (1234), 3 states have internal predecessors, (1234), 0 states have call successors, (0), 0 states 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 19:40:47,950 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 960.0) internal successors, (3840), 4 states have internal predecessors, (3840), 0 states have call successors, (0), 0 states 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 19:40:47,951 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 960.0) internal successors, (3840), 4 states have internal predecessors, (3840), 0 states have call successors, (0), 0 states 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 19:40:47,951 INFO L175 Difference]: Start difference. First operand has 63 places, 60 transitions, 239 flow. Second operand 3 states and 1234 transitions. [2023-08-03 19:40:47,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 74 transitions, 415 flow [2023-08-03 19:40:47,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 74 transitions, 408 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-03 19:40:47,956 INFO L231 Difference]: Finished difference. Result has 64 places, 61 transitions, 244 flow [2023-08-03 19:40:47,956 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=960, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=244, PETRI_PLACES=64, PETRI_TRANSITIONS=61} [2023-08-03 19:40:47,956 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 10 predicate places. [2023-08-03 19:40:47,956 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 61 transitions, 244 flow [2023-08-03 19:40:47,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 395.6666666666667) internal successors, (1187), 3 states have internal predecessors, (1187), 0 states have call successors, (0), 0 states 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 19:40:47,957 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:40:47,957 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:40:47,961 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-08-03 19:40:48,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:40:48,162 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:40:48,162 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:40:48,162 INFO L85 PathProgramCache]: Analyzing trace with hash -428174443, now seen corresponding path program 1 times [2023-08-03 19:40:48,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:40:48,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64155334] [2023-08-03 19:40:48,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:40:48,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:40:48,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:40:48,198 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-08-03 19:40:48,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:40:48,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64155334] [2023-08-03 19:40:48,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64155334] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:40:48,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1336017691] [2023-08-03 19:40:48,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:40:48,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:40:48,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:40:48,201 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:40:48,203 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-03 19:40:48,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:40:48,286 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 19:40:48,287 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:40:48,295 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-08-03 19:40:48,295 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:40:48,305 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-08-03 19:40:48,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1336017691] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:40:48,305 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:40:48,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-03 19:40:48,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960589065] [2023-08-03 19:40:48,306 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:40:48,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:40:48,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:40:48,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:40:48,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:40:48,316 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 389 out of 960 [2023-08-03 19:40:48,318 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 61 transitions, 244 flow. Second operand has 5 states, 5 states have (on average 392.6) internal successors, (1963), 5 states have internal predecessors, (1963), 0 states have call successors, (0), 0 states 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 19:40:48,318 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:40:48,318 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 389 of 960 [2023-08-03 19:40:48,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:40:50,139 INFO L124 PetriNetUnfolderBase]: 16745/25469 cut-off events. [2023-08-03 19:40:50,139 INFO L125 PetriNetUnfolderBase]: For 4239/4239 co-relation queries the response was YES. [2023-08-03 19:40:50,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54203 conditions, 25469 events. 16745/25469 cut-off events. For 4239/4239 co-relation queries the response was YES. Maximal size of possible extension queue 836. Compared 159562 event pairs, 9446 based on Foata normal form. 8/24146 useless extension candidates. Maximal degree in co-relation 34067. Up to 23572 conditions per place. [2023-08-03 19:40:50,265 INFO L140 encePairwiseOnDemand]: 957/960 looper letters, 58 selfloop transitions, 3 changer transitions 0/68 dead transitions. [2023-08-03 19:40:50,265 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 68 transitions, 376 flow [2023-08-03 19:40:50,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 19:40:50,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 19:40:50,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1615 transitions. [2023-08-03 19:40:50,268 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4205729166666667 [2023-08-03 19:40:50,268 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1615 transitions. [2023-08-03 19:40:50,268 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1615 transitions. [2023-08-03 19:40:50,269 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:40:50,269 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1615 transitions. [2023-08-03 19:40:50,271 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 403.75) internal successors, (1615), 4 states have internal predecessors, (1615), 0 states have call successors, (0), 0 states 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 19:40:50,274 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 960.0) internal successors, (4800), 5 states have internal predecessors, (4800), 0 states have call successors, (0), 0 states 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 19:40:50,274 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 960.0) internal successors, (4800), 5 states have internal predecessors, (4800), 0 states have call successors, (0), 0 states 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 19:40:50,274 INFO L175 Difference]: Start difference. First operand has 64 places, 61 transitions, 244 flow. Second operand 4 states and 1615 transitions. [2023-08-03 19:40:50,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 68 transitions, 376 flow [2023-08-03 19:40:50,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 68 transitions, 374 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 19:40:50,281 INFO L231 Difference]: Finished difference. Result has 66 places, 60 transitions, 240 flow [2023-08-03 19:40:50,281 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=960, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=240, PETRI_PLACES=66, PETRI_TRANSITIONS=60} [2023-08-03 19:40:50,281 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 12 predicate places. [2023-08-03 19:40:50,281 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 60 transitions, 240 flow [2023-08-03 19:40:50,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 392.6) internal successors, (1963), 5 states have internal predecessors, (1963), 0 states have call successors, (0), 0 states 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 19:40:50,282 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:40:50,282 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:40:50,297 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-03 19:40:50,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:40:50,486 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:40:50,486 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:40:50,487 INFO L85 PathProgramCache]: Analyzing trace with hash -627328030, now seen corresponding path program 1 times [2023-08-03 19:40:50,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:40:50,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840712494] [2023-08-03 19:40:50,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:40:50,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:40:50,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:40:50,538 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-03 19:40:50,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:40:50,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840712494] [2023-08-03 19:40:50,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840712494] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:40:50,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1561539764] [2023-08-03 19:40:50,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:40:50,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:40:50,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:40:50,540 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:40:50,541 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-03 19:40:50,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:40:50,611 INFO L262 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 19:40:50,612 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:40:50,625 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-03 19:40:50,625 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:40:50,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1561539764] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:40:50,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 19:40:50,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2023-08-03 19:40:50,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490552692] [2023-08-03 19:40:50,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:40:50,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:40:50,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:40:50,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:40:50,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 19:40:50,634 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 389 out of 960 [2023-08-03 19:40:50,635 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 60 transitions, 240 flow. Second operand has 5 states, 5 states have (on average 392.6) internal successors, (1963), 5 states have internal predecessors, (1963), 0 states have call successors, (0), 0 states 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 19:40:50,635 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:40:50,635 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 389 of 960 [2023-08-03 19:40:50,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:40:52,412 INFO L124 PetriNetUnfolderBase]: 16553/25181 cut-off events. [2023-08-03 19:40:52,412 INFO L125 PetriNetUnfolderBase]: For 3835/3835 co-relation queries the response was YES. [2023-08-03 19:40:52,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53351 conditions, 25181 events. 16553/25181 cut-off events. For 3835/3835 co-relation queries the response was YES. Maximal size of possible extension queue 836. Compared 157664 event pairs, 766 based on Foata normal form. 64/23914 useless extension candidates. Maximal degree in co-relation 33649. Up to 22603 conditions per place. [2023-08-03 19:40:52,551 INFO L140 encePairwiseOnDemand]: 956/960 looper letters, 66 selfloop transitions, 4 changer transitions 0/76 dead transitions. [2023-08-03 19:40:52,551 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 76 transitions, 412 flow [2023-08-03 19:40:52,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 19:40:52,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 19:40:52,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2013 transitions. [2023-08-03 19:40:52,554 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.419375 [2023-08-03 19:40:52,554 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2013 transitions. [2023-08-03 19:40:52,554 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2013 transitions. [2023-08-03 19:40:52,555 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:40:52,555 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2013 transitions. [2023-08-03 19:40:52,557 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 402.6) internal successors, (2013), 5 states have internal predecessors, (2013), 0 states have call successors, (0), 0 states 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 19:40:52,561 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 960.0) internal successors, (5760), 6 states have internal predecessors, (5760), 0 states have call successors, (0), 0 states 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 19:40:52,561 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 960.0) internal successors, (5760), 6 states have internal predecessors, (5760), 0 states have call successors, (0), 0 states 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 19:40:52,561 INFO L175 Difference]: Start difference. First operand has 66 places, 60 transitions, 240 flow. Second operand 5 states and 2013 transitions. [2023-08-03 19:40:52,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 76 transitions, 412 flow [2023-08-03 19:40:52,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 76 transitions, 398 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-03 19:40:52,568 INFO L231 Difference]: Finished difference. Result has 66 places, 60 transitions, 243 flow [2023-08-03 19:40:52,568 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=960, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=243, PETRI_PLACES=66, PETRI_TRANSITIONS=60} [2023-08-03 19:40:52,568 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 12 predicate places. [2023-08-03 19:40:52,568 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 60 transitions, 243 flow [2023-08-03 19:40:52,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 392.6) internal successors, (1963), 5 states have internal predecessors, (1963), 0 states have call successors, (0), 0 states 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 19:40:52,569 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:40:52,569 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 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 19:40:52,576 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-03 19:40:52,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-08-03 19:40:52,773 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:40:52,774 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:40:52,774 INFO L85 PathProgramCache]: Analyzing trace with hash 284671981, now seen corresponding path program 1 times [2023-08-03 19:40:52,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:40:52,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257607334] [2023-08-03 19:40:52,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:40:52,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:40:52,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:40:52,811 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-08-03 19:40:52,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:40:52,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257607334] [2023-08-03 19:40:52,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257607334] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:40:52,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [182846309] [2023-08-03 19:40:52,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:40:52,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:40:52,812 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:40:52,813 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:40:52,815 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-03 19:40:52,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:40:52,889 INFO L262 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 19:40:52,890 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:40:52,895 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-08-03 19:40:52,895 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:40:52,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [182846309] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:40:52,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 19:40:52,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-08-03 19:40:52,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530805107] [2023-08-03 19:40:52,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:40:52,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 19:40:52,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:40:52,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 19:40:52,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:40:52,907 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 390 out of 960 [2023-08-03 19:40:52,907 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 60 transitions, 243 flow. Second operand has 3 states, 3 states have (on average 397.3333333333333) internal successors, (1192), 3 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states 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 19:40:52,907 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:40:52,907 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 390 of 960 [2023-08-03 19:40:52,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:40:54,735 INFO L124 PetriNetUnfolderBase]: 16344/25328 cut-off events. [2023-08-03 19:40:54,735 INFO L125 PetriNetUnfolderBase]: For 4135/4135 co-relation queries the response was YES. [2023-08-03 19:40:54,808 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53433 conditions, 25328 events. 16344/25328 cut-off events. For 4135/4135 co-relation queries the response was YES. Maximal size of possible extension queue 758. Compared 163770 event pairs, 10450 based on Foata normal form. 0/24381 useless extension candidates. Maximal degree in co-relation 34552. Up to 17668 conditions per place. [2023-08-03 19:40:54,863 INFO L140 encePairwiseOnDemand]: 957/960 looper letters, 66 selfloop transitions, 2 changer transitions 0/74 dead transitions. [2023-08-03 19:40:54,863 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 74 transitions, 419 flow [2023-08-03 19:40:54,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 19:40:54,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 19:40:54,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1234 transitions. [2023-08-03 19:40:54,866 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4284722222222222 [2023-08-03 19:40:54,866 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1234 transitions. [2023-08-03 19:40:54,866 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1234 transitions. [2023-08-03 19:40:54,866 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:40:54,866 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1234 transitions. [2023-08-03 19:40:54,868 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 411.3333333333333) internal successors, (1234), 3 states have internal predecessors, (1234), 0 states have call successors, (0), 0 states 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 19:40:54,870 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 960.0) internal successors, (3840), 4 states have internal predecessors, (3840), 0 states have call successors, (0), 0 states 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 19:40:54,870 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 960.0) internal successors, (3840), 4 states have internal predecessors, (3840), 0 states have call successors, (0), 0 states 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 19:40:54,870 INFO L175 Difference]: Start difference. First operand has 66 places, 60 transitions, 243 flow. Second operand 3 states and 1234 transitions. [2023-08-03 19:40:54,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 74 transitions, 419 flow [2023-08-03 19:40:54,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 74 transitions, 412 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-03 19:40:54,875 INFO L231 Difference]: Finished difference. Result has 67 places, 61 transitions, 248 flow [2023-08-03 19:40:54,875 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=960, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=248, PETRI_PLACES=67, PETRI_TRANSITIONS=61} [2023-08-03 19:40:54,876 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 13 predicate places. [2023-08-03 19:40:54,876 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 61 transitions, 248 flow [2023-08-03 19:40:54,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 397.3333333333333) internal successors, (1192), 3 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states 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 19:40:54,876 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:40:54,876 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:40:54,880 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-03 19:40:55,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:40:55,078 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:40:55,078 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:40:55,078 INFO L85 PathProgramCache]: Analyzing trace with hash -551231598, now seen corresponding path program 1 times [2023-08-03 19:40:55,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:40:55,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823093721] [2023-08-03 19:40:55,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:40:55,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:40:55,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:40:55,124 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-08-03 19:40:55,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:40:55,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823093721] [2023-08-03 19:40:55,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823093721] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:40:55,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2076761602] [2023-08-03 19:40:55,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:40:55,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:40:55,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:40:55,126 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:40:55,137 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-03 19:40:55,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:40:55,219 INFO L262 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 19:40:55,223 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:40:55,229 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-08-03 19:40:55,229 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:40:55,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2076761602] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:40:55,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 19:40:55,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-08-03 19:40:55,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204202467] [2023-08-03 19:40:55,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:40:55,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 19:40:55,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:40:55,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 19:40:55,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:40:55,237 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 390 out of 960 [2023-08-03 19:40:55,238 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 61 transitions, 248 flow. Second operand has 3 states, 3 states have (on average 398.6666666666667) internal successors, (1196), 3 states have internal predecessors, (1196), 0 states have call successors, (0), 0 states 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 19:40:55,238 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:40:55,238 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 390 of 960 [2023-08-03 19:40:55,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:40:57,155 INFO L124 PetriNetUnfolderBase]: 16615/25971 cut-off events. [2023-08-03 19:40:57,155 INFO L125 PetriNetUnfolderBase]: For 5291/5291 co-relation queries the response was YES. [2023-08-03 19:40:57,219 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57005 conditions, 25971 events. 16615/25971 cut-off events. For 5291/5291 co-relation queries the response was YES. Maximal size of possible extension queue 728. Compared 169754 event pairs, 12321 based on Foata normal form. 0/25737 useless extension candidates. Maximal degree in co-relation 37425. Up to 20542 conditions per place. [2023-08-03 19:40:57,272 INFO L140 encePairwiseOnDemand]: 957/960 looper letters, 67 selfloop transitions, 2 changer transitions 0/75 dead transitions. [2023-08-03 19:40:57,273 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 75 transitions, 426 flow [2023-08-03 19:40:57,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 19:40:57,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 19:40:57,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1234 transitions. [2023-08-03 19:40:57,275 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4284722222222222 [2023-08-03 19:40:57,275 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1234 transitions. [2023-08-03 19:40:57,275 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1234 transitions. [2023-08-03 19:40:57,275 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:40:57,275 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1234 transitions. [2023-08-03 19:40:57,277 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 411.3333333333333) internal successors, (1234), 3 states have internal predecessors, (1234), 0 states have call successors, (0), 0 states 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 19:40:57,279 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 960.0) internal successors, (3840), 4 states have internal predecessors, (3840), 0 states have call successors, (0), 0 states 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 19:40:57,279 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 960.0) internal successors, (3840), 4 states have internal predecessors, (3840), 0 states have call successors, (0), 0 states 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 19:40:57,279 INFO L175 Difference]: Start difference. First operand has 67 places, 61 transitions, 248 flow. Second operand 3 states and 1234 transitions. [2023-08-03 19:40:57,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 75 transitions, 426 flow [2023-08-03 19:40:57,442 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 75 transitions, 424 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 19:40:57,442 INFO L231 Difference]: Finished difference. Result has 69 places, 62 transitions, 258 flow [2023-08-03 19:40:57,443 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=960, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=258, PETRI_PLACES=69, PETRI_TRANSITIONS=62} [2023-08-03 19:40:57,443 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 15 predicate places. [2023-08-03 19:40:57,443 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 62 transitions, 258 flow [2023-08-03 19:40:57,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 398.6666666666667) internal successors, (1196), 3 states have internal predecessors, (1196), 0 states have call successors, (0), 0 states 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 19:40:57,443 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:40:57,444 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:40:57,448 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-03 19:40:57,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-08-03 19:40:57,644 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:40:57,644 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:40:57,644 INFO L85 PathProgramCache]: Analyzing trace with hash 409089624, now seen corresponding path program 1 times [2023-08-03 19:40:57,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:40:57,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343712053] [2023-08-03 19:40:57,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:40:57,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:40:57,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:40:57,698 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-08-03 19:40:57,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:40:57,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343712053] [2023-08-03 19:40:57,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343712053] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:40:57,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1011429363] [2023-08-03 19:40:57,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:40:57,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:40:57,699 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:40:57,701 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:40:57,703 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-03 19:40:57,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:40:57,800 INFO L262 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 19:40:57,804 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:40:57,820 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-08-03 19:40:57,820 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:40:57,830 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-08-03 19:40:57,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1011429363] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:40:57,830 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:40:57,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-03 19:40:57,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580933667] [2023-08-03 19:40:57,831 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:40:57,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:40:57,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:40:57,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:40:57,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:40:57,843 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 389 out of 960 [2023-08-03 19:40:57,843 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 62 transitions, 258 flow. Second operand has 5 states, 5 states have (on average 395.8) internal successors, (1979), 5 states have internal predecessors, (1979), 0 states have call successors, (0), 0 states 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 19:40:57,843 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:40:57,844 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 389 of 960 [2023-08-03 19:40:57,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:40:59,754 INFO L124 PetriNetUnfolderBase]: 16215/25347 cut-off events. [2023-08-03 19:40:59,754 INFO L125 PetriNetUnfolderBase]: For 5005/5005 co-relation queries the response was YES. [2023-08-03 19:40:59,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56386 conditions, 25347 events. 16215/25347 cut-off events. For 5005/5005 co-relation queries the response was YES. Maximal size of possible extension queue 702. Compared 164089 event pairs, 9491 based on Foata normal form. 32/25378 useless extension candidates. Maximal degree in co-relation 42454. Up to 22968 conditions per place. [2023-08-03 19:40:59,868 INFO L140 encePairwiseOnDemand]: 957/960 looper letters, 64 selfloop transitions, 3 changer transitions 0/73 dead transitions. [2023-08-03 19:40:59,868 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 73 transitions, 410 flow [2023-08-03 19:40:59,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 19:40:59,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 19:40:59,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1619 transitions. [2023-08-03 19:40:59,871 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42161458333333335 [2023-08-03 19:40:59,871 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1619 transitions. [2023-08-03 19:40:59,871 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1619 transitions. [2023-08-03 19:40:59,872 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:40:59,872 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1619 transitions. [2023-08-03 19:40:59,874 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 404.75) internal successors, (1619), 4 states have internal predecessors, (1619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:40:59,876 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 960.0) internal successors, (4800), 5 states have internal predecessors, (4800), 0 states have call successors, (0), 0 states 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 19:40:59,877 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 960.0) internal successors, (4800), 5 states have internal predecessors, (4800), 0 states have call successors, (0), 0 states 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 19:40:59,877 INFO L175 Difference]: Start difference. First operand has 69 places, 62 transitions, 258 flow. Second operand 4 states and 1619 transitions. [2023-08-03 19:40:59,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 73 transitions, 410 flow [2023-08-03 19:41:00,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 73 transitions, 408 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 19:41:00,045 INFO L231 Difference]: Finished difference. Result has 71 places, 61 transitions, 254 flow [2023-08-03 19:41:00,045 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=960, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=254, PETRI_PLACES=71, PETRI_TRANSITIONS=61} [2023-08-03 19:41:00,046 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 17 predicate places. [2023-08-03 19:41:00,046 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 61 transitions, 254 flow [2023-08-03 19:41:00,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 395.8) internal successors, (1979), 5 states have internal predecessors, (1979), 0 states have call successors, (0), 0 states 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 19:41:00,046 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:41:00,046 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:41:00,051 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-08-03 19:41:00,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-08-03 19:41:00,251 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:41:00,251 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:41:00,251 INFO L85 PathProgramCache]: Analyzing trace with hash 681874088, now seen corresponding path program 1 times [2023-08-03 19:41:00,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:41:00,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609399023] [2023-08-03 19:41:00,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:41:00,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:41:00,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:41:00,305 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-08-03 19:41:00,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:41:00,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609399023] [2023-08-03 19:41:00,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609399023] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:41:00,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [472902310] [2023-08-03 19:41:00,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:41:00,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:41:00,306 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:41:00,307 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:41:00,309 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-08-03 19:41:00,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:41:00,405 INFO L262 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 19:41:00,406 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:41:00,419 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-08-03 19:41:00,420 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:41:00,429 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-08-03 19:41:00,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [472902310] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:41:00,430 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:41:00,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-03 19:41:00,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683845889] [2023-08-03 19:41:00,430 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:41:00,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:41:00,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:41:00,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:41:00,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:41:00,441 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 389 out of 960 [2023-08-03 19:41:00,442 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 61 transitions, 254 flow. Second operand has 5 states, 5 states have (on average 396.0) internal successors, (1980), 5 states have internal predecessors, (1980), 0 states have call successors, (0), 0 states 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 19:41:00,442 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:41:00,442 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 389 of 960 [2023-08-03 19:41:00,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:41:01,725 INFO L124 PetriNetUnfolderBase]: 10315/16383 cut-off events. [2023-08-03 19:41:01,725 INFO L125 PetriNetUnfolderBase]: For 3568/3568 co-relation queries the response was YES. [2023-08-03 19:41:01,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36473 conditions, 16383 events. 10315/16383 cut-off events. For 3568/3568 co-relation queries the response was YES. Maximal size of possible extension queue 465. Compared 98899 event pairs, 5374 based on Foata normal form. 192/16574 useless extension candidates. Maximal degree in co-relation 31654. Up to 9425 conditions per place. [2023-08-03 19:41:01,778 INFO L140 encePairwiseOnDemand]: 956/960 looper letters, 71 selfloop transitions, 4 changer transitions 0/81 dead transitions. [2023-08-03 19:41:01,778 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 81 transitions, 456 flow [2023-08-03 19:41:01,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 19:41:01,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 19:41:01,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1627 transitions. [2023-08-03 19:41:01,781 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4236979166666667 [2023-08-03 19:41:01,781 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1627 transitions. [2023-08-03 19:41:01,781 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1627 transitions. [2023-08-03 19:41:01,781 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:41:01,781 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1627 transitions. [2023-08-03 19:41:01,783 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 406.75) internal successors, (1627), 4 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states 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 19:41:01,786 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 960.0) internal successors, (4800), 5 states have internal predecessors, (4800), 0 states have call successors, (0), 0 states 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 19:41:01,786 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 960.0) internal successors, (4800), 5 states have internal predecessors, (4800), 0 states have call successors, (0), 0 states 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 19:41:01,786 INFO L175 Difference]: Start difference. First operand has 71 places, 61 transitions, 254 flow. Second operand 4 states and 1627 transitions. [2023-08-03 19:41:01,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 81 transitions, 456 flow [2023-08-03 19:41:01,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 81 transitions, 450 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-03 19:41:01,854 INFO L231 Difference]: Finished difference. Result has 73 places, 62 transitions, 268 flow [2023-08-03 19:41:01,854 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=960, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=268, PETRI_PLACES=73, PETRI_TRANSITIONS=62} [2023-08-03 19:41:01,854 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 19 predicate places. [2023-08-03 19:41:01,854 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 62 transitions, 268 flow [2023-08-03 19:41:01,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 396.0) internal successors, (1980), 5 states have internal predecessors, (1980), 0 states have call successors, (0), 0 states 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 19:41:01,855 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:41:01,855 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:41:01,859 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-08-03 19:41:02,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-08-03 19:41:02,059 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:41:02,060 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:41:02,060 INFO L85 PathProgramCache]: Analyzing trace with hash -1838503454, now seen corresponding path program 1 times [2023-08-03 19:41:02,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:41:02,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277917830] [2023-08-03 19:41:02,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:41:02,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:41:02,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:41:02,137 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-08-03 19:41:02,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:41:02,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277917830] [2023-08-03 19:41:02,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277917830] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:41:02,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1687390510] [2023-08-03 19:41:02,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:41:02,137 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:41:02,137 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:41:02,138 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:41:02,140 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-08-03 19:41:02,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:41:02,242 INFO L262 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 19:41:02,243 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:41:02,251 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-08-03 19:41:02,252 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:41:02,266 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-08-03 19:41:02,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1687390510] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:41:02,266 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:41:02,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-03 19:41:02,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754478972] [2023-08-03 19:41:02,266 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:41:02,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:41:02,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:41:02,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:41:02,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:41:02,277 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 389 out of 960 [2023-08-03 19:41:02,278 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 62 transitions, 268 flow. Second operand has 5 states, 5 states have (on average 396.4) internal successors, (1982), 5 states have internal predecessors, (1982), 0 states have call successors, (0), 0 states 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 19:41:02,278 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:41:02,278 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 389 of 960 [2023-08-03 19:41:02,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:41:03,443 INFO L124 PetriNetUnfolderBase]: 9415/14912 cut-off events. [2023-08-03 19:41:03,444 INFO L125 PetriNetUnfolderBase]: For 6527/6527 co-relation queries the response was YES. [2023-08-03 19:41:03,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35831 conditions, 14912 events. 9415/14912 cut-off events. For 6527/6527 co-relation queries the response was YES. Maximal size of possible extension queue 409. Compared 87990 event pairs, 5942 based on Foata normal form. 233/15144 useless extension candidates. Maximal degree in co-relation 34761. Up to 8732 conditions per place. [2023-08-03 19:41:03,508 INFO L140 encePairwiseOnDemand]: 956/960 looper letters, 72 selfloop transitions, 4 changer transitions 0/82 dead transitions. [2023-08-03 19:41:03,508 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 82 transitions, 472 flow [2023-08-03 19:41:03,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 19:41:03,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 19:41:03,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1627 transitions. [2023-08-03 19:41:03,511 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4236979166666667 [2023-08-03 19:41:03,511 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1627 transitions. [2023-08-03 19:41:03,511 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1627 transitions. [2023-08-03 19:41:03,511 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:41:03,511 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1627 transitions. [2023-08-03 19:41:03,513 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 406.75) internal successors, (1627), 4 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states 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 19:41:03,516 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 960.0) internal successors, (4800), 5 states have internal predecessors, (4800), 0 states have call successors, (0), 0 states 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 19:41:03,516 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 960.0) internal successors, (4800), 5 states have internal predecessors, (4800), 0 states have call successors, (0), 0 states 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 19:41:03,516 INFO L175 Difference]: Start difference. First operand has 73 places, 62 transitions, 268 flow. Second operand 4 states and 1627 transitions. [2023-08-03 19:41:03,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 82 transitions, 472 flow [2023-08-03 19:41:03,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 82 transitions, 468 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-03 19:41:03,586 INFO L231 Difference]: Finished difference. Result has 77 places, 63 transitions, 284 flow [2023-08-03 19:41:03,587 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=960, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=284, PETRI_PLACES=77, PETRI_TRANSITIONS=63} [2023-08-03 19:41:03,587 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 23 predicate places. [2023-08-03 19:41:03,587 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 63 transitions, 284 flow [2023-08-03 19:41:03,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 396.4) internal successors, (1982), 5 states have internal predecessors, (1982), 0 states have call successors, (0), 0 states 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 19:41:03,587 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:41:03,587 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:41:03,595 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-08-03 19:41:03,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-08-03 19:41:03,790 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:41:03,790 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:41:03,790 INFO L85 PathProgramCache]: Analyzing trace with hash -1269560658, now seen corresponding path program 1 times [2023-08-03 19:41:03,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:41:03,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74930208] [2023-08-03 19:41:03,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:41:03,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:41:03,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:41:03,860 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-08-03 19:41:03,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:41:03,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74930208] [2023-08-03 19:41:03,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74930208] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:41:03,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [159611044] [2023-08-03 19:41:03,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:41:03,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:41:03,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:41:03,862 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:41:03,864 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-08-03 19:41:03,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:41:03,980 INFO L262 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 19:41:03,981 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:41:03,997 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-08-03 19:41:03,998 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:41:04,007 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-08-03 19:41:04,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [159611044] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:41:04,007 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:41:04,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-03 19:41:04,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220735889] [2023-08-03 19:41:04,007 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:41:04,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:41:04,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:41:04,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:41:04,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:41:04,016 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 389 out of 960 [2023-08-03 19:41:04,017 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 63 transitions, 284 flow. Second operand has 5 states, 5 states have (on average 396.8) internal successors, (1984), 5 states have internal predecessors, (1984), 0 states have call successors, (0), 0 states 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 19:41:04,017 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:41:04,017 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 389 of 960 [2023-08-03 19:41:04,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:41:05,207 INFO L124 PetriNetUnfolderBase]: 9409/14895 cut-off events. [2023-08-03 19:41:05,207 INFO L125 PetriNetUnfolderBase]: For 7481/7481 co-relation queries the response was YES. [2023-08-03 19:41:05,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37500 conditions, 14895 events. 9409/14895 cut-off events. For 7481/7481 co-relation queries the response was YES. Maximal size of possible extension queue 409. Compared 87849 event pairs, 8414 based on Foata normal form. 13/14907 useless extension candidates. Maximal degree in co-relation 36401. Up to 13453 conditions per place. [2023-08-03 19:41:05,263 INFO L140 encePairwiseOnDemand]: 956/960 looper letters, 71 selfloop transitions, 3 changer transitions 3/83 dead transitions. [2023-08-03 19:41:05,263 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 83 transitions, 490 flow [2023-08-03 19:41:05,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 19:41:05,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 19:41:05,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1627 transitions. [2023-08-03 19:41:05,267 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4236979166666667 [2023-08-03 19:41:05,267 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1627 transitions. [2023-08-03 19:41:05,267 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1627 transitions. [2023-08-03 19:41:05,267 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:41:05,268 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1627 transitions. [2023-08-03 19:41:05,269 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 406.75) internal successors, (1627), 4 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states 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 19:41:05,271 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 960.0) internal successors, (4800), 5 states have internal predecessors, (4800), 0 states have call successors, (0), 0 states 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 19:41:05,272 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 960.0) internal successors, (4800), 5 states have internal predecessors, (4800), 0 states have call successors, (0), 0 states 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 19:41:05,272 INFO L175 Difference]: Start difference. First operand has 77 places, 63 transitions, 284 flow. Second operand 4 states and 1627 transitions. [2023-08-03 19:41:05,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 83 transitions, 490 flow [2023-08-03 19:41:05,408 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 83 transitions, 486 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-03 19:41:05,409 INFO L231 Difference]: Finished difference. Result has 81 places, 61 transitions, 282 flow [2023-08-03 19:41:05,409 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=960, PETRI_DIFFERENCE_MINUEND_FLOW=280, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=282, PETRI_PLACES=81, PETRI_TRANSITIONS=61} [2023-08-03 19:41:05,410 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 27 predicate places. [2023-08-03 19:41:05,410 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 61 transitions, 282 flow [2023-08-03 19:41:05,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 396.8) internal successors, (1984), 5 states have internal predecessors, (1984), 0 states have call successors, (0), 0 states 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 19:41:05,410 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:41:05,410 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:41:05,417 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-08-03 19:41:05,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:41:05,615 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:41:05,615 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:41:05,615 INFO L85 PathProgramCache]: Analyzing trace with hash -2041388116, now seen corresponding path program 1 times [2023-08-03 19:41:05,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:41:05,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497511750] [2023-08-03 19:41:05,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:41:05,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:41:05,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:41:06,353 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-08-03 19:41:06,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:41:06,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497511750] [2023-08-03 19:41:06,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497511750] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:41:06,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1574592289] [2023-08-03 19:41:06,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:41:06,354 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:41:06,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:41:06,355 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:41:06,357 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-08-03 19:41:06,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:41:06,480 INFO L262 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 29 conjunts are in the unsatisfiable core [2023-08-03 19:41:06,482 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:41:08,755 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-08-03 19:41:08,755 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:41:09,305 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-08-03 19:41:09,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1574592289] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:41:09,305 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:41:09,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 11 [2023-08-03 19:41:09,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049803560] [2023-08-03 19:41:09,306 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:41:09,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-03 19:41:09,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:41:09,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-03 19:41:09,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-08-03 19:41:09,520 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 367 out of 960 [2023-08-03 19:41:09,522 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 61 transitions, 282 flow. Second operand has 12 states, 12 states have (on average 375.3333333333333) internal successors, (4504), 12 states have internal predecessors, (4504), 0 states have call successors, (0), 0 states 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 19:41:09,522 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:41:09,522 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 367 of 960 [2023-08-03 19:41:09,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:41:11,931 INFO L124 PetriNetUnfolderBase]: 14536/22727 cut-off events. [2023-08-03 19:41:11,931 INFO L125 PetriNetUnfolderBase]: For 15302/15302 co-relation queries the response was YES. [2023-08-03 19:41:12,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56372 conditions, 22727 events. 14536/22727 cut-off events. For 15302/15302 co-relation queries the response was YES. Maximal size of possible extension queue 627. Compared 148375 event pairs, 2137 based on Foata normal form. 1/22609 useless extension candidates. Maximal degree in co-relation 56285. Up to 9029 conditions per place. [2023-08-03 19:41:12,066 INFO L140 encePairwiseOnDemand]: 952/960 looper letters, 202 selfloop transitions, 25 changer transitions 1/234 dead transitions. [2023-08-03 19:41:12,067 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 234 transitions, 1565 flow [2023-08-03 19:41:12,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-03 19:41:12,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-03 19:41:12,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 3140 transitions. [2023-08-03 19:41:12,071 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4088541666666667 [2023-08-03 19:41:12,071 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 3140 transitions. [2023-08-03 19:41:12,071 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 3140 transitions. [2023-08-03 19:41:12,072 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:41:12,072 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 3140 transitions. [2023-08-03 19:41:12,075 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 392.5) internal successors, (3140), 8 states have internal predecessors, (3140), 0 states have call successors, (0), 0 states 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 19:41:12,079 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 960.0) internal successors, (8640), 9 states have internal predecessors, (8640), 0 states have call successors, (0), 0 states 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 19:41:12,079 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 960.0) internal successors, (8640), 9 states have internal predecessors, (8640), 0 states have call successors, (0), 0 states 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 19:41:12,079 INFO L175 Difference]: Start difference. First operand has 81 places, 61 transitions, 282 flow. Second operand 8 states and 3140 transitions. [2023-08-03 19:41:12,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 234 transitions, 1565 flow [2023-08-03 19:41:12,368 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 234 transitions, 1522 flow, removed 3 selfloop flow, removed 4 redundant places. [2023-08-03 19:41:12,370 INFO L231 Difference]: Finished difference. Result has 88 places, 87 transitions, 429 flow [2023-08-03 19:41:12,370 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=960, PETRI_DIFFERENCE_MINUEND_FLOW=272, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=429, PETRI_PLACES=88, PETRI_TRANSITIONS=87} [2023-08-03 19:41:12,371 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 34 predicate places. [2023-08-03 19:41:12,371 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 87 transitions, 429 flow [2023-08-03 19:41:12,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 375.3333333333333) internal successors, (4504), 12 states have internal predecessors, (4504), 0 states have call successors, (0), 0 states 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 19:41:12,371 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:41:12,371 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:41:12,376 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-08-03 19:41:12,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-08-03 19:41:12,576 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:41:12,576 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:41:12,577 INFO L85 PathProgramCache]: Analyzing trace with hash 1596544896, now seen corresponding path program 1 times [2023-08-03 19:41:12,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:41:12,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937509411] [2023-08-03 19:41:12,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:41:12,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:41:12,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:41:13,298 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-08-03 19:41:13,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:41:13,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937509411] [2023-08-03 19:41:13,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937509411] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:41:13,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [392264275] [2023-08-03 19:41:13,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:41:13,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:41:13,299 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:41:13,300 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:41:13,328 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-08-03 19:41:13,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:41:13,425 INFO L262 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 29 conjunts are in the unsatisfiable core [2023-08-03 19:41:13,427 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:41:15,071 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-08-03 19:41:15,071 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:41:15,589 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-08-03 19:41:15,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [392264275] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:41:15,590 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:41:15,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2023-08-03 19:41:15,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232258611] [2023-08-03 19:41:15,590 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:41:15,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-03 19:41:15,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:41:15,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-03 19:41:15,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-08-03 19:41:15,772 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 367 out of 960 [2023-08-03 19:41:15,773 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 87 transitions, 429 flow. Second operand has 11 states, 11 states have (on average 374.3636363636364) internal successors, (4118), 11 states have internal predecessors, (4118), 0 states have call successors, (0), 0 states 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 19:41:15,773 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:41:15,773 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 367 of 960 [2023-08-03 19:41:15,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:41:19,682 INFO L124 PetriNetUnfolderBase]: 21992/34935 cut-off events. [2023-08-03 19:41:19,682 INFO L125 PetriNetUnfolderBase]: For 57806/57806 co-relation queries the response was YES. [2023-08-03 19:41:19,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117849 conditions, 34935 events. 21992/34935 cut-off events. For 57806/57806 co-relation queries the response was YES. Maximal size of possible extension queue 991. Compared 249860 event pairs, 2507 based on Foata normal form. 1/34768 useless extension candidates. Maximal degree in co-relation 117747. Up to 14922 conditions per place. [2023-08-03 19:41:19,818 INFO L140 encePairwiseOnDemand]: 952/960 looper letters, 200 selfloop transitions, 31 changer transitions 1/238 dead transitions. [2023-08-03 19:41:19,818 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 238 transitions, 1675 flow [2023-08-03 19:41:19,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-03 19:41:19,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-03 19:41:19,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 3135 transitions. [2023-08-03 19:41:19,822 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.408203125 [2023-08-03 19:41:19,822 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 3135 transitions. [2023-08-03 19:41:19,822 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 3135 transitions. [2023-08-03 19:41:19,823 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:41:19,823 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 3135 transitions. [2023-08-03 19:41:19,826 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 391.875) internal successors, (3135), 8 states have internal predecessors, (3135), 0 states have call successors, (0), 0 states 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 19:41:19,829 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 960.0) internal successors, (8640), 9 states have internal predecessors, (8640), 0 states have call successors, (0), 0 states 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 19:41:19,830 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 960.0) internal successors, (8640), 9 states have internal predecessors, (8640), 0 states have call successors, (0), 0 states 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 19:41:19,830 INFO L175 Difference]: Start difference. First operand has 88 places, 87 transitions, 429 flow. Second operand 8 states and 3135 transitions. [2023-08-03 19:41:19,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 238 transitions, 1675 flow [2023-08-03 19:41:20,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 238 transitions, 1674 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 19:41:20,354 INFO L231 Difference]: Finished difference. Result has 97 places, 97 transitions, 602 flow [2023-08-03 19:41:20,354 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=960, PETRI_DIFFERENCE_MINUEND_FLOW=428, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=602, PETRI_PLACES=97, PETRI_TRANSITIONS=97} [2023-08-03 19:41:20,354 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 43 predicate places. [2023-08-03 19:41:20,354 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 97 transitions, 602 flow [2023-08-03 19:41:20,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 374.3636363636364) internal successors, (4118), 11 states have internal predecessors, (4118), 0 states have call successors, (0), 0 states 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 19:41:20,355 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:41:20,355 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:41:20,359 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-08-03 19:41:20,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-08-03 19:41:20,555 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:41:20,556 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:41:20,556 INFO L85 PathProgramCache]: Analyzing trace with hash -1999102152, now seen corresponding path program 2 times [2023-08-03 19:41:20,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:41:20,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732089507] [2023-08-03 19:41:20,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:41:20,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:41:20,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:41:21,214 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-08-03 19:41:21,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:41:21,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732089507] [2023-08-03 19:41:21,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732089507] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:41:21,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1224763871] [2023-08-03 19:41:21,214 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-03 19:41:21,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:41:21,214 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:41:21,216 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:41:21,219 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-08-03 19:41:21,354 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-03 19:41:21,354 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-03 19:41:21,356 INFO L262 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 29 conjunts are in the unsatisfiable core [2023-08-03 19:41:21,358 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:41:23,558 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-08-03 19:41:23,558 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:41:24,175 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-08-03 19:41:24,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1224763871] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:41:24,175 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:41:24,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2023-08-03 19:41:24,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977548367] [2023-08-03 19:41:24,175 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:41:24,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-03 19:41:24,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:41:24,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-03 19:41:24,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-08-03 19:41:24,552 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 367 out of 960 [2023-08-03 19:41:24,553 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 97 transitions, 602 flow. Second operand has 11 states, 11 states have (on average 375.1818181818182) internal successors, (4127), 11 states have internal predecessors, (4127), 0 states have call successors, (0), 0 states 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 19:41:24,553 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:41:24,553 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 367 of 960 [2023-08-03 19:41:24,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:41:28,617 INFO L124 PetriNetUnfolderBase]: 21992/35199 cut-off events. [2023-08-03 19:41:28,617 INFO L125 PetriNetUnfolderBase]: For 133407/133407 co-relation queries the response was YES. [2023-08-03 19:41:28,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 143562 conditions, 35199 events. 21992/35199 cut-off events. For 133407/133407 co-relation queries the response was YES. Maximal size of possible extension queue 991. Compared 251834 event pairs, 2951 based on Foata normal form. 1/35101 useless extension candidates. Maximal degree in co-relation 143449. Up to 18000 conditions per place. [2023-08-03 19:41:28,816 INFO L140 encePairwiseOnDemand]: 952/960 looper letters, 211 selfloop transitions, 37 changer transitions 4/258 dead transitions. [2023-08-03 19:41:28,816 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 258 transitions, 1996 flow [2023-08-03 19:41:28,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-03 19:41:28,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-03 19:41:28,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 3140 transitions. [2023-08-03 19:41:28,820 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4088541666666667 [2023-08-03 19:41:28,820 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 3140 transitions. [2023-08-03 19:41:28,820 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 3140 transitions. [2023-08-03 19:41:28,821 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:41:28,821 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 3140 transitions. [2023-08-03 19:41:28,824 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 392.5) internal successors, (3140), 8 states have internal predecessors, (3140), 0 states have call successors, (0), 0 states 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 19:41:28,827 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 960.0) internal successors, (8640), 9 states have internal predecessors, (8640), 0 states have call successors, (0), 0 states 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 19:41:28,828 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 960.0) internal successors, (8640), 9 states have internal predecessors, (8640), 0 states have call successors, (0), 0 states 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 19:41:28,828 INFO L175 Difference]: Start difference. First operand has 97 places, 97 transitions, 602 flow. Second operand 8 states and 3140 transitions. [2023-08-03 19:41:28,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 258 transitions, 1996 flow [2023-08-03 19:41:30,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 258 transitions, 1950 flow, removed 8 selfloop flow, removed 4 redundant places. [2023-08-03 19:41:30,128 INFO L231 Difference]: Finished difference. Result has 102 places, 109 transitions, 754 flow [2023-08-03 19:41:30,129 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=960, PETRI_DIFFERENCE_MINUEND_FLOW=570, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=754, PETRI_PLACES=102, PETRI_TRANSITIONS=109} [2023-08-03 19:41:30,129 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 48 predicate places. [2023-08-03 19:41:30,129 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 109 transitions, 754 flow [2023-08-03 19:41:30,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 375.1818181818182) internal successors, (4127), 11 states have internal predecessors, (4127), 0 states have call successors, (0), 0 states 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 19:41:30,129 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:41:30,130 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:41:30,136 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-08-03 19:41:30,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:41:30,330 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:41:30,330 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:41:30,330 INFO L85 PathProgramCache]: Analyzing trace with hash -24133666, now seen corresponding path program 1 times [2023-08-03 19:41:30,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:41:30,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622486378] [2023-08-03 19:41:30,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:41:30,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:41:30,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:41:30,856 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-08-03 19:41:30,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:41:30,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622486378] [2023-08-03 19:41:30,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622486378] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:41:30,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 19:41:30,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-03 19:41:30,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755319959] [2023-08-03 19:41:30,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:41:30,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:41:30,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:41:30,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:41:30,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:41:30,946 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 367 out of 960 [2023-08-03 19:41:30,946 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 109 transitions, 754 flow. Second operand has 5 states, 5 states have (on average 374.6) internal successors, (1873), 5 states have internal predecessors, (1873), 0 states have call successors, (0), 0 states 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 19:41:30,947 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:41:30,947 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 367 of 960 [2023-08-03 19:41:30,947 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:41:34,814 INFO L124 PetriNetUnfolderBase]: 21992/34644 cut-off events. [2023-08-03 19:41:34,814 INFO L125 PetriNetUnfolderBase]: For 135391/135391 co-relation queries the response was YES. [2023-08-03 19:41:34,927 INFO L83 FinitePrefix]: Finished finitePrefix Result has 151908 conditions, 34644 events. 21992/34644 cut-off events. For 135391/135391 co-relation queries the response was YES. Maximal size of possible extension queue 991. Compared 247570 event pairs, 1525 based on Foata normal form. 1/34440 useless extension candidates. Maximal degree in co-relation 151788. Up to 17734 conditions per place. [2023-08-03 19:41:34,983 INFO L140 encePairwiseOnDemand]: 952/960 looper letters, 185 selfloop transitions, 39 changer transitions 11/241 dead transitions. [2023-08-03 19:41:34,983 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 241 transitions, 1952 flow [2023-08-03 19:41:34,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-03 19:41:34,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-03 19:41:34,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2370 transitions. [2023-08-03 19:41:34,986 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4114583333333333 [2023-08-03 19:41:34,986 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2370 transitions. [2023-08-03 19:41:34,986 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2370 transitions. [2023-08-03 19:41:34,987 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:41:34,987 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2370 transitions. [2023-08-03 19:41:34,989 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 395.0) internal successors, (2370), 6 states have internal predecessors, (2370), 0 states have call successors, (0), 0 states 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 19:41:34,992 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 960.0) internal successors, (6720), 7 states have internal predecessors, (6720), 0 states have call successors, (0), 0 states 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 19:41:34,992 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 960.0) internal successors, (6720), 7 states have internal predecessors, (6720), 0 states have call successors, (0), 0 states 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 19:41:34,992 INFO L175 Difference]: Start difference. First operand has 102 places, 109 transitions, 754 flow. Second operand 6 states and 2370 transitions. [2023-08-03 19:41:34,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 241 transitions, 1952 flow [2023-08-03 19:41:36,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 241 transitions, 1924 flow, removed 10 selfloop flow, removed 2 redundant places. [2023-08-03 19:41:36,737 INFO L231 Difference]: Finished difference. Result has 109 places, 121 transitions, 999 flow [2023-08-03 19:41:36,737 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=960, PETRI_DIFFERENCE_MINUEND_FLOW=734, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=999, PETRI_PLACES=109, PETRI_TRANSITIONS=121} [2023-08-03 19:41:36,737 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 55 predicate places. [2023-08-03 19:41:36,737 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 121 transitions, 999 flow [2023-08-03 19:41:36,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 374.6) internal successors, (1873), 5 states have internal predecessors, (1873), 0 states have call successors, (0), 0 states 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 19:41:36,738 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:41:36,738 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:41:36,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-08-03 19:41:36,738 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:41:36,738 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:41:36,738 INFO L85 PathProgramCache]: Analyzing trace with hash -1119981430, now seen corresponding path program 1 times [2023-08-03 19:41:36,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:41:36,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686293256] [2023-08-03 19:41:36,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:41:36,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:41:36,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:41:37,207 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-08-03 19:41:37,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:41:37,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686293256] [2023-08-03 19:41:37,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686293256] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:41:37,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1846398514] [2023-08-03 19:41:37,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:41:37,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:41:37,208 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:41:37,209 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:41:37,211 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-08-03 19:41:37,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:41:37,337 INFO L262 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 29 conjunts are in the unsatisfiable core [2023-08-03 19:41:37,339 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:41:39,277 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-08-03 19:41:39,277 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:41:39,737 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-08-03 19:41:39,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1846398514] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:41:39,737 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:41:39,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2023-08-03 19:41:39,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032602200] [2023-08-03 19:41:39,737 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:41:39,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-03 19:41:39,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:41:39,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-03 19:41:39,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2023-08-03 19:41:39,938 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 367 out of 960 [2023-08-03 19:41:39,940 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 121 transitions, 999 flow. Second operand has 11 states, 11 states have (on average 374.45454545454544) internal successors, (4119), 11 states have internal predecessors, (4119), 0 states have call successors, (0), 0 states 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 19:41:39,940 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:41:39,940 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 367 of 960 [2023-08-03 19:41:39,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:41:44,874 INFO L124 PetriNetUnfolderBase]: 25078/40292 cut-off events. [2023-08-03 19:41:44,874 INFO L125 PetriNetUnfolderBase]: For 256458/256458 co-relation queries the response was YES. [2023-08-03 19:41:45,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 191177 conditions, 40292 events. 25078/40292 cut-off events. For 256458/256458 co-relation queries the response was YES. Maximal size of possible extension queue 1162. Compared 299598 event pairs, 2539 based on Foata normal form. 1/40123 useless extension candidates. Maximal degree in co-relation 191048. Up to 18997 conditions per place. [2023-08-03 19:41:45,084 INFO L140 encePairwiseOnDemand]: 952/960 looper letters, 182 selfloop transitions, 47 changer transitions 32/267 dead transitions. [2023-08-03 19:41:45,084 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 267 transitions, 2311 flow [2023-08-03 19:41:45,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-03 19:41:45,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-03 19:41:45,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 3134 transitions. [2023-08-03 19:41:45,088 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4080729166666667 [2023-08-03 19:41:45,088 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 3134 transitions. [2023-08-03 19:41:45,088 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 3134 transitions. [2023-08-03 19:41:45,088 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:41:45,088 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 3134 transitions. [2023-08-03 19:41:45,090 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 391.75) internal successors, (3134), 8 states have internal predecessors, (3134), 0 states have call successors, (0), 0 states 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 19:41:45,094 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 960.0) internal successors, (8640), 9 states have internal predecessors, (8640), 0 states have call successors, (0), 0 states 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 19:41:45,094 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 960.0) internal successors, (8640), 9 states have internal predecessors, (8640), 0 states have call successors, (0), 0 states 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 19:41:45,094 INFO L175 Difference]: Start difference. First operand has 109 places, 121 transitions, 999 flow. Second operand 8 states and 3134 transitions. [2023-08-03 19:41:45,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 267 transitions, 2311 flow [2023-08-03 19:41:48,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 267 transitions, 2300 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-03 19:41:48,772 INFO L231 Difference]: Finished difference. Result has 116 places, 119 transitions, 1068 flow [2023-08-03 19:41:48,772 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=960, PETRI_DIFFERENCE_MINUEND_FLOW=988, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1068, PETRI_PLACES=116, PETRI_TRANSITIONS=119} [2023-08-03 19:41:48,773 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 62 predicate places. [2023-08-03 19:41:48,773 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 119 transitions, 1068 flow [2023-08-03 19:41:48,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 374.45454545454544) internal successors, (4119), 11 states have internal predecessors, (4119), 0 states have call successors, (0), 0 states 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 19:41:48,773 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:41:48,773 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:41:48,778 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-08-03 19:41:48,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:41:48,974 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:41:48,974 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:41:48,974 INFO L85 PathProgramCache]: Analyzing trace with hash -832780498, now seen corresponding path program 2 times [2023-08-03 19:41:48,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:41:48,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678718873] [2023-08-03 19:41:48,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:41:48,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:41:49,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:41:49,502 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-08-03 19:41:49,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:41:49,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678718873] [2023-08-03 19:41:49,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678718873] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:41:49,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 19:41:49,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-03 19:41:49,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109021581] [2023-08-03 19:41:49,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:41:49,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:41:49,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:41:49,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:41:49,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:41:49,580 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 367 out of 960 [2023-08-03 19:41:49,581 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 119 transitions, 1068 flow. Second operand has 5 states, 5 states have (on average 374.6) internal successors, (1873), 5 states have internal predecessors, (1873), 0 states have call successors, (0), 0 states 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 19:41:49,581 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:41:49,581 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 367 of 960 [2023-08-03 19:41:49,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:41:54,215 INFO L124 PetriNetUnfolderBase]: 23096/38390 cut-off events. [2023-08-03 19:41:54,216 INFO L125 PetriNetUnfolderBase]: For 289244/289244 co-relation queries the response was YES. [2023-08-03 19:41:54,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 186052 conditions, 38390 events. 23096/38390 cut-off events. For 289244/289244 co-relation queries the response was YES. Maximal size of possible extension queue 1162. Compared 296793 event pairs, 2877 based on Foata normal form. 1/38247 useless extension candidates. Maximal degree in co-relation 184971. Up to 16684 conditions per place. [2023-08-03 19:41:54,429 INFO L140 encePairwiseOnDemand]: 952/960 looper letters, 0 selfloop transitions, 0 changer transitions 236/236 dead transitions. [2023-08-03 19:41:54,429 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 236 transitions, 2108 flow [2023-08-03 19:41:54,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-03 19:41:54,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-03 19:41:54,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2369 transitions. [2023-08-03 19:41:54,432 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41128472222222223 [2023-08-03 19:41:54,432 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2369 transitions. [2023-08-03 19:41:54,432 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2369 transitions. [2023-08-03 19:41:54,433 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:41:54,433 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2369 transitions. [2023-08-03 19:41:54,434 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 394.8333333333333) internal successors, (2369), 6 states have internal predecessors, (2369), 0 states have call successors, (0), 0 states 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 19:41:54,437 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 960.0) internal successors, (6720), 7 states have internal predecessors, (6720), 0 states have call successors, (0), 0 states 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 19:41:54,437 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 960.0) internal successors, (6720), 7 states have internal predecessors, (6720), 0 states have call successors, (0), 0 states 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 19:41:54,437 INFO L175 Difference]: Start difference. First operand has 116 places, 119 transitions, 1068 flow. Second operand 6 states and 2369 transitions. [2023-08-03 19:41:54,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 236 transitions, 2108 flow [2023-08-03 19:41:56,500 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 236 transitions, 2011 flow, removed 2 selfloop flow, removed 11 redundant places. [2023-08-03 19:41:56,501 INFO L231 Difference]: Finished difference. Result has 109 places, 0 transitions, 0 flow [2023-08-03 19:41:56,501 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=960, PETRI_DIFFERENCE_MINUEND_FLOW=964, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=109, PETRI_TRANSITIONS=0} [2023-08-03 19:41:56,502 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 55 predicate places. [2023-08-03 19:41:56,502 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 0 transitions, 0 flow [2023-08-03 19:41:56,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 374.6) internal successors, (1873), 5 states have internal predecessors, (1873), 0 states have call successors, (0), 0 states 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 19:41:56,502 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-08-03 19:41:56,502 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-08-03 19:41:56,502 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-03 19:41:56,502 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-03 19:41:56,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-08-03 19:41:56,503 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:41:56,504 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-03 19:41:56,504 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-03 19:41:56,506 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.08 07:41:56 BasicIcfg [2023-08-03 19:41:56,506 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-03 19:41:56,506 INFO L158 Benchmark]: Toolchain (without parser) took 108020.97ms. Allocated memory was 444.6MB in the beginning and 5.9GB in the end (delta: 5.4GB). Free memory was 407.7MB in the beginning and 3.5GB in the end (delta: -3.1GB). Peak memory consumption was 2.8GB. Max. memory is 16.0GB. [2023-08-03 19:41:56,506 INFO L158 Benchmark]: CDTParser took 0.08ms. Allocated memory is still 327.2MB. Free memory is still 281.3MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-03 19:41:56,506 INFO L158 Benchmark]: CACSL2BoogieTranslator took 215.57ms. Allocated memory is still 444.6MB. Free memory was 407.3MB in the beginning and 395.6MB in the end (delta: 11.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. [2023-08-03 19:41:56,507 INFO L158 Benchmark]: Boogie Procedure Inliner took 50.57ms. Allocated memory is still 444.6MB. Free memory was 395.5MB in the beginning and 393.0MB in the end (delta: 2.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2023-08-03 19:41:56,507 INFO L158 Benchmark]: Boogie Preprocessor took 19.09ms. Allocated memory is still 444.6MB. Free memory was 393.0MB in the beginning and 390.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 19:41:56,507 INFO L158 Benchmark]: RCFGBuilder took 424.46ms. Allocated memory is still 444.6MB. Free memory was 390.9MB in the beginning and 368.3MB in the end (delta: 22.6MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. [2023-08-03 19:41:56,507 INFO L158 Benchmark]: TraceAbstraction took 107307.46ms. Allocated memory was 444.6MB in the beginning and 5.9GB in the end (delta: 5.4GB). Free memory was 367.8MB in the beginning and 3.5GB in the end (delta: -3.1GB). Peak memory consumption was 2.8GB. Max. memory is 16.0GB. [2023-08-03 19:41:56,508 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.08ms. Allocated memory is still 327.2MB. Free memory is still 281.3MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 215.57ms. Allocated memory is still 444.6MB. Free memory was 407.3MB in the beginning and 395.6MB in the end (delta: 11.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 50.57ms. Allocated memory is still 444.6MB. Free memory was 395.5MB in the beginning and 393.0MB in the end (delta: 2.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * Boogie Preprocessor took 19.09ms. Allocated memory is still 444.6MB. Free memory was 393.0MB in the beginning and 390.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 424.46ms. Allocated memory is still 444.6MB. Free memory was 390.9MB in the beginning and 368.3MB in the end (delta: 22.6MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. * TraceAbstraction took 107307.46ms. Allocated memory was 444.6MB in the beginning and 5.9GB in the end (delta: 5.4GB). Free memory was 367.8MB in the beginning and 3.5GB in the end (delta: -3.1GB). Peak memory consumption was 2.8GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 6.6s, 276 PlacesBefore, 39 PlacesAfterwards, 297 TransitionsBefore, 41 TransitionsAfterwards, 34968 CoEnabledTransitionPairs, 8 FixpointIterations, 60 TrivialSequentialCompositions, 176 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 63 ConcurrentYvCompositions, 19 ChoiceCompositions, 318 TotalNumberOfCompositions, 36735 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 36256, independent: 36220, independent conditional: 0, independent unconditional: 36220, dependent: 36, dependent conditional: 0, dependent unconditional: 36, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 20344, independent: 20329, independent conditional: 0, independent unconditional: 20329, dependent: 15, dependent conditional: 0, dependent unconditional: 15, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 36256, independent: 15891, independent conditional: 0, independent unconditional: 15891, dependent: 21, dependent conditional: 0, dependent unconditional: 21, unknown: 20344, unknown conditional: 0, unknown unconditional: 20344] , Statistics on independence cache: Total cache size (in pairs): 80, Positive cache size: 77, Positive conditional cache size: 0, Positive unconditional cache size: 77, Negative cache size: 3, Negative conditional cache size: 0, Negative unconditional cache size: 3, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 11.3s, 414 PlacesBefore, 54 PlacesAfterwards, 450 TransitionsBefore, 59 TransitionsAfterwards, 115620 CoEnabledTransitionPairs, 8 FixpointIterations, 60 TrivialSequentialCompositions, 295 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 124 ConcurrentYvCompositions, 31 ChoiceCompositions, 510 TotalNumberOfCompositions, 131374 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 127542, independent: 127489, independent conditional: 0, independent unconditional: 127489, dependent: 53, dependent conditional: 0, dependent unconditional: 53, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 69220, independent: 69198, independent conditional: 0, independent unconditional: 69198, dependent: 22, dependent conditional: 0, dependent unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 127542, independent: 58291, independent conditional: 0, independent unconditional: 58291, dependent: 31, dependent conditional: 0, dependent unconditional: 31, unknown: 69220, unknown conditional: 0, unknown unconditional: 69220] , Statistics on independence cache: Total cache size (in pairs): 190, Positive cache size: 184, Positive conditional cache size: 0, Positive unconditional cache size: 184, Negative cache size: 6, Negative conditional cache size: 0, Negative unconditional cache size: 6, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 88]: 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 7 procedures, 402 locations, 4 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: 7.0s, OverallIterations: 1, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 6.9s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=124occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 6 NumberOfCodeBlocks, 6 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data with 2 thread instances CFG has 10 procedures, 534 locations, 4 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: 100.1s, OverallIterations: 21, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 67.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 12.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3198 SdHoareTripleChecker+Valid, 4.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2869 mSDsluCounter, 725 SdHoareTripleChecker+Invalid, 3.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 669 mSDsCounter, 154 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6758 IncrementalHoareTripleChecker+Invalid, 6912 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 154 mSolverCounterUnsat, 56 mSDtfsCounter, 6758 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1240 GetRequests, 1105 SyntacticMatches, 21 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 2.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1068occurred in iteration=20, InterpolantAutomatonStates: 101, 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: 0.3s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 14.5s InterpolantComputationTime, 1445 NumberOfCodeBlocks, 1445 NumberOfCodeBlocksAsserted, 40 NumberOfCheckSat, 1876 ConstructedInterpolants, 0 QuantifiedInterpolants, 19230 SizeOfPredicates, 150 NumberOfNonLiveVariables, 4505 ConjunctsInSsa, 156 ConjunctsInUnsatCore, 49 InterpolantComputations, 11 PerfectInterpolantSequences, 876/971 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 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-03 19:41:56,525 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...