/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_unroll-cond-3.wvr_bound2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 21:13:10,059 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 21:13:10,120 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 21:13:10,126 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 21:13:10,126 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 21:13:10,127 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 21:13:10,127 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 21:13:10,147 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 21:13:10,148 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 21:13:10,151 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 21:13:10,151 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 21:13:10,151 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 21:13:10,152 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 21:13:10,153 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 21:13:10,153 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 21:13:10,153 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 21:13:10,153 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 21:13:10,153 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 21:13:10,153 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 21:13:10,154 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 21:13:10,154 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 21:13:10,154 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 21:13:10,154 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 21:13:10,154 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 21:13:10,155 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 21:13:10,155 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 21:13:10,155 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 21:13:10,156 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 21:13:10,156 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 21:13:10,156 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 21:13:10,157 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 21:13:10,157 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 21:13:10,157 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 21:13:10,157 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 21:13:10,157 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 21:13:10,157 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 21:13:10,157 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 21:13:10,158 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 21:13:10,158 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 21:13:10,158 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 21:13:10,158 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 21:13:10,158 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> TOGETHER [2023-08-03 21:13:10,345 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 21:13:10,357 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 21:13:10,359 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 21:13:10,360 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 21:13:10,360 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 21:13:10,361 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/weaver_unroll-cond-3.wvr_bound2.c [2023-08-03 21:13:11,351 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 21:13:11,543 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 21:13:11,543 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/weaver_unroll-cond-3.wvr_bound2.c [2023-08-03 21:13:11,549 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b6eacc6f/8570c44ec61b4717b2015bcbb7c295eb/FLAG4d33578b8 [2023-08-03 21:13:11,956 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b6eacc6f/8570c44ec61b4717b2015bcbb7c295eb [2023-08-03 21:13:11,957 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 21:13:11,958 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 21:13:11,959 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 21:13:11,959 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 21:13:11,961 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 21:13:11,961 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 09:13:11" (1/1) ... [2023-08-03 21:13:11,962 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@326e7c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:13:11, skipping insertion in model container [2023-08-03 21:13:11,962 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 09:13:11" (1/1) ... [2023-08-03 21:13:11,982 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 21:13:12,098 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_unroll-cond-3.wvr_bound2.c[2803,2816] [2023-08-03 21:13:12,102 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 21:13:12,109 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 21:13:12,124 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_unroll-cond-3.wvr_bound2.c[2803,2816] [2023-08-03 21:13:12,126 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 21:13:12,136 INFO L206 MainTranslator]: Completed translation [2023-08-03 21:13:12,136 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:13:12 WrapperNode [2023-08-03 21:13:12,136 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 21:13:12,137 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 21:13:12,137 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 21:13:12,137 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 21:13:12,142 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:13:12" (1/1) ... [2023-08-03 21:13:12,148 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:13:12" (1/1) ... [2023-08-03 21:13:12,174 INFO L138 Inliner]: procedures = 24, calls = 37, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 197 [2023-08-03 21:13:12,175 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 21:13:12,175 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 21:13:12,175 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 21:13:12,175 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 21:13:12,181 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:13:12" (1/1) ... [2023-08-03 21:13:12,181 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:13:12" (1/1) ... [2023-08-03 21:13:12,183 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:13:12" (1/1) ... [2023-08-03 21:13:12,183 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:13:12" (1/1) ... [2023-08-03 21:13:12,188 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:13:12" (1/1) ... [2023-08-03 21:13:12,190 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:13:12" (1/1) ... [2023-08-03 21:13:12,191 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:13:12" (1/1) ... [2023-08-03 21:13:12,192 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:13:12" (1/1) ... [2023-08-03 21:13:12,194 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 21:13:12,194 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 21:13:12,194 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 21:13:12,194 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 21:13:12,195 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:13:12" (1/1) ... [2023-08-03 21:13:12,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 21:13:12,217 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 21:13:12,230 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 21:13:12,233 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 21:13:12,250 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 21:13:12,250 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-03 21:13:12,250 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-03 21:13:12,251 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-03 21:13:12,251 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-03 21:13:12,251 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 21:13:12,251 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 21:13:12,251 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 21:13:12,251 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-03 21:13:12,251 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 21:13:12,251 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 21:13:12,251 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-03 21:13:12,251 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 21:13:12,252 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 21:13:12,314 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 21:13:12,315 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 21:13:12,541 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 21:13:12,548 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 21:13:12,548 INFO L302 CfgBuilder]: Removed 7 assume(true) statements. [2023-08-03 21:13:12,549 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 09:13:12 BoogieIcfgContainer [2023-08-03 21:13:12,549 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 21:13:12,551 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 21:13:12,551 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 21:13:12,553 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 21:13:12,553 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 09:13:11" (1/3) ... [2023-08-03 21:13:12,554 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@519c6956 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 09:13:12, skipping insertion in model container [2023-08-03 21:13:12,554 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:13:12" (2/3) ... [2023-08-03 21:13:12,554 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@519c6956 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 09:13:12, skipping insertion in model container [2023-08-03 21:13:12,554 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 09:13:12" (3/3) ... [2023-08-03 21:13:12,555 INFO L112 eAbstractionObserver]: Analyzing ICFG weaver_unroll-cond-3.wvr_bound2.c [2023-08-03 21:13:12,560 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 21:13:12,572 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 21:13:12,574 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-03 21:13:12,574 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 21:13:12,636 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-03 21:13:12,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 203 places, 224 transitions, 470 flow [2023-08-03 21:13:12,746 INFO L124 PetriNetUnfolderBase]: 52/429 cut-off events. [2023-08-03 21:13:12,746 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-08-03 21:13:12,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 449 conditions, 429 events. 52/429 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1748 event pairs, 0 based on Foata normal form. 0/367 useless extension candidates. Maximal degree in co-relation 225. Up to 8 conditions per place. [2023-08-03 21:13:12,758 INFO L82 GeneralOperation]: Start removeDead. Operand has 203 places, 224 transitions, 470 flow [2023-08-03 21:13:12,763 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 203 places, 224 transitions, 470 flow [2023-08-03 21:13:12,765 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 21:13:12,771 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 203 places, 224 transitions, 470 flow [2023-08-03 21:13:12,772 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 203 places, 224 transitions, 470 flow [2023-08-03 21:13:12,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 203 places, 224 transitions, 470 flow [2023-08-03 21:13:12,839 INFO L124 PetriNetUnfolderBase]: 52/429 cut-off events. [2023-08-03 21:13:12,839 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-08-03 21:13:12,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 449 conditions, 429 events. 52/429 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1748 event pairs, 0 based on Foata normal form. 0/367 useless extension candidates. Maximal degree in co-relation 225. Up to 8 conditions per place. [2023-08-03 21:13:12,847 INFO L119 LiptonReduction]: Number of co-enabled transitions 12406 [2023-08-03 21:13:16,761 INFO L134 LiptonReduction]: Checked pairs total: 16182 [2023-08-03 21:13:16,762 INFO L136 LiptonReduction]: Total number of compositions: 233 [2023-08-03 21:13:16,794 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 21:13:16,799 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;@75692340, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 21:13:16,799 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-03 21:13:16,808 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 21:13:16,808 INFO L124 PetriNetUnfolderBase]: 2/15 cut-off events. [2023-08-03 21:13:16,808 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 21:13:16,809 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:13:16,809 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-03 21:13:16,810 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 21:13:16,814 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:13:16,814 INFO L85 PathProgramCache]: Analyzing trace with hash 1367025840, now seen corresponding path program 1 times [2023-08-03 21:13:16,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:13:16,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304638035] [2023-08-03 21:13:16,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:13:16,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:13:16,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:13:17,004 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 21:13:17,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 21:13:17,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304638035] [2023-08-03 21:13:17,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304638035] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 21:13:17,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 21:13:17,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-03 21:13:17,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644248273] [2023-08-03 21:13:17,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 21:13:17,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 21:13:17,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 21:13:17,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 21:13:17,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 21:13:17,043 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 457 [2023-08-03 21:13:17,045 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 44 transitions, 110 flow. Second operand has 3 states, 3 states have (on average 198.0) internal successors, (594), 3 states have internal predecessors, (594), 0 states have call successors, (0), 0 states 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 21:13:17,045 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 21:13:17,045 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 457 [2023-08-03 21:13:17,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 21:13:17,186 INFO L124 PetriNetUnfolderBase]: 1046/1573 cut-off events. [2023-08-03 21:13:17,187 INFO L125 PetriNetUnfolderBase]: For 63/63 co-relation queries the response was YES. [2023-08-03 21:13:17,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3168 conditions, 1573 events. 1046/1573 cut-off events. For 63/63 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 7165 event pairs, 443 based on Foata normal form. 0/1012 useless extension candidates. Maximal degree in co-relation 2701. Up to 1523 conditions per place. [2023-08-03 21:13:17,193 INFO L140 encePairwiseOnDemand]: 452/457 looper letters, 38 selfloop transitions, 2 changer transitions 0/46 dead transitions. [2023-08-03 21:13:17,193 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 46 transitions, 194 flow [2023-08-03 21:13:17,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 21:13:17,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 21:13:17,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 632 transitions. [2023-08-03 21:13:17,208 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46097738876732314 [2023-08-03 21:13:17,208 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 632 transitions. [2023-08-03 21:13:17,209 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 632 transitions. [2023-08-03 21:13:17,211 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 21:13:17,213 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 632 transitions. [2023-08-03 21:13:17,217 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 210.66666666666666) internal successors, (632), 3 states have internal predecessors, (632), 0 states have call successors, (0), 0 states 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 21:13:17,222 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 457.0) internal successors, (1828), 4 states have internal predecessors, (1828), 0 states have call successors, (0), 0 states 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 21:13:17,223 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 457.0) internal successors, (1828), 4 states have internal predecessors, (1828), 0 states have call successors, (0), 0 states 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 21:13:17,224 INFO L175 Difference]: Start difference. First operand has 39 places, 44 transitions, 110 flow. Second operand 3 states and 632 transitions. [2023-08-03 21:13:17,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 46 transitions, 194 flow [2023-08-03 21:13:17,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 46 transitions, 194 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 21:13:17,229 INFO L231 Difference]: Finished difference. Result has 41 places, 42 transitions, 114 flow [2023-08-03 21:13:17,230 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=457, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=114, PETRI_PLACES=41, PETRI_TRANSITIONS=42} [2023-08-03 21:13:17,232 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 2 predicate places. [2023-08-03 21:13:17,232 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 42 transitions, 114 flow [2023-08-03 21:13:17,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 198.0) internal successors, (594), 3 states have internal predecessors, (594), 0 states have call successors, (0), 0 states 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 21:13:17,233 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:13:17,233 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2023-08-03 21:13:17,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 21:13:17,234 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 21:13:17,234 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:13:17,234 INFO L85 PathProgramCache]: Analyzing trace with hash -494424685, now seen corresponding path program 1 times [2023-08-03 21:13:17,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:13:17,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788519212] [2023-08-03 21:13:17,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:13:17,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:13:17,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:13:17,303 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 21:13:17,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 21:13:17,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788519212] [2023-08-03 21:13:17,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788519212] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 21:13:17,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 21:13:17,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 21:13:17,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189376987] [2023-08-03 21:13:17,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 21:13:17,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 21:13:17,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 21:13:17,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 21:13:17,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 21:13:17,327 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 457 [2023-08-03 21:13:17,328 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 42 transitions, 114 flow. Second operand has 3 states, 3 states have (on average 197.66666666666666) internal successors, (593), 3 states have internal predecessors, (593), 0 states have call successors, (0), 0 states 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 21:13:17,328 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 21:13:17,328 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 457 [2023-08-03 21:13:17,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 21:13:17,469 INFO L124 PetriNetUnfolderBase]: 1046/1574 cut-off events. [2023-08-03 21:13:17,469 INFO L125 PetriNetUnfolderBase]: For 67/67 co-relation queries the response was YES. [2023-08-03 21:13:17,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3183 conditions, 1574 events. 1046/1574 cut-off events. For 67/67 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 7164 event pairs, 639 based on Foata normal form. 1/1019 useless extension candidates. Maximal degree in co-relation 2711. Up to 1529 conditions per place. [2023-08-03 21:13:17,476 INFO L140 encePairwiseOnDemand]: 454/457 looper letters, 35 selfloop transitions, 2 changer transitions 0/43 dead transitions. [2023-08-03 21:13:17,477 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 43 transitions, 190 flow [2023-08-03 21:13:17,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 21:13:17,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 21:13:17,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 626 transitions. [2023-08-03 21:13:17,479 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4566010211524435 [2023-08-03 21:13:17,479 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 626 transitions. [2023-08-03 21:13:17,479 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 626 transitions. [2023-08-03 21:13:17,479 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 21:13:17,479 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 626 transitions. [2023-08-03 21:13:17,481 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 208.66666666666666) internal successors, (626), 3 states have internal predecessors, (626), 0 states have call successors, (0), 0 states 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 21:13:17,483 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 457.0) internal successors, (1828), 4 states have internal predecessors, (1828), 0 states have call successors, (0), 0 states 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 21:13:17,484 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 457.0) internal successors, (1828), 4 states have internal predecessors, (1828), 0 states have call successors, (0), 0 states 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 21:13:17,484 INFO L175 Difference]: Start difference. First operand has 41 places, 42 transitions, 114 flow. Second operand 3 states and 626 transitions. [2023-08-03 21:13:17,484 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 43 transitions, 190 flow [2023-08-03 21:13:17,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 43 transitions, 186 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-03 21:13:17,487 INFO L231 Difference]: Finished difference. Result has 42 places, 43 transitions, 122 flow [2023-08-03 21:13:17,487 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=457, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=122, PETRI_PLACES=42, PETRI_TRANSITIONS=43} [2023-08-03 21:13:17,490 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 3 predicate places. [2023-08-03 21:13:17,492 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 43 transitions, 122 flow [2023-08-03 21:13:17,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 197.66666666666666) internal successors, (593), 3 states have internal predecessors, (593), 0 states have call successors, (0), 0 states 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 21:13:17,497 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:13:17,497 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-08-03 21:13:17,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-03 21:13:17,497 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 21:13:17,499 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:13:17,499 INFO L85 PathProgramCache]: Analyzing trace with hash -952685283, now seen corresponding path program 1 times [2023-08-03 21:13:17,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:13:17,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876416718] [2023-08-03 21:13:17,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:13:17,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:13:17,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 21:13:17,545 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 21:13:17,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 21:13:17,570 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 21:13:17,570 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 21:13:17,571 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2023-08-03 21:13:17,572 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2023-08-03 21:13:17,572 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-08-03 21:13:17,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-03 21:13:17,573 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-08-03 21:13:17,574 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 21:13:17,574 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 21:13:17,603 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-08-03 21:13:17,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 291 places, 324 transitions, 696 flow [2023-08-03 21:13:17,758 INFO L124 PetriNetUnfolderBase]: 182/1273 cut-off events. [2023-08-03 21:13:17,759 INFO L125 PetriNetUnfolderBase]: For 72/72 co-relation queries the response was YES. [2023-08-03 21:13:17,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1370 conditions, 1273 events. 182/1273 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 7932 event pairs, 1 based on Foata normal form. 0/1088 useless extension candidates. Maximal degree in co-relation 776. Up to 32 conditions per place. [2023-08-03 21:13:17,777 INFO L82 GeneralOperation]: Start removeDead. Operand has 291 places, 324 transitions, 696 flow [2023-08-03 21:13:17,785 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 291 places, 324 transitions, 696 flow [2023-08-03 21:13:17,785 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 21:13:17,785 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 291 places, 324 transitions, 696 flow [2023-08-03 21:13:17,785 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 291 places, 324 transitions, 696 flow [2023-08-03 21:13:17,785 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 291 places, 324 transitions, 696 flow [2023-08-03 21:13:17,904 INFO L124 PetriNetUnfolderBase]: 182/1273 cut-off events. [2023-08-03 21:13:17,904 INFO L125 PetriNetUnfolderBase]: For 72/72 co-relation queries the response was YES. [2023-08-03 21:13:17,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1370 conditions, 1273 events. 182/1273 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 7932 event pairs, 1 based on Foata normal form. 0/1088 useless extension candidates. Maximal degree in co-relation 776. Up to 32 conditions per place. [2023-08-03 21:13:17,958 INFO L119 LiptonReduction]: Number of co-enabled transitions 44252 [2023-08-03 21:13:22,352 INFO L134 LiptonReduction]: Checked pairs total: 77119 [2023-08-03 21:13:22,353 INFO L136 LiptonReduction]: Total number of compositions: 317 [2023-08-03 21:13:22,354 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 21:13:22,355 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;@75692340, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 21:13:22,355 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-03 21:13:22,357 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 21:13:22,357 INFO L124 PetriNetUnfolderBase]: 1/15 cut-off events. [2023-08-03 21:13:22,357 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 21:13:22,357 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:13:22,357 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-03 21:13:22,357 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 21:13:22,357 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:13:22,357 INFO L85 PathProgramCache]: Analyzing trace with hash 1753754687, now seen corresponding path program 1 times [2023-08-03 21:13:22,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:13:22,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242433500] [2023-08-03 21:13:22,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:13:22,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:13:22,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:13:22,431 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 21:13:22,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 21:13:22,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242433500] [2023-08-03 21:13:22,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242433500] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 21:13:22,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 21:13:22,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-03 21:13:22,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644809233] [2023-08-03 21:13:22,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 21:13:22,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 21:13:22,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 21:13:22,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 21:13:22,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 21:13:22,442 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 282 out of 641 [2023-08-03 21:13:22,443 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 91 transitions, 230 flow. Second operand has 3 states, 3 states have (on average 284.0) internal successors, (852), 3 states have internal predecessors, (852), 0 states have call successors, (0), 0 states 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 21:13:22,443 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 21:13:22,443 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 282 of 641 [2023-08-03 21:13:22,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 21:13:52,726 INFO L124 PetriNetUnfolderBase]: 475249/584529 cut-off events. [2023-08-03 21:13:52,726 INFO L125 PetriNetUnfolderBase]: For 32859/32859 co-relation queries the response was YES. [2023-08-03 21:13:53,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1178851 conditions, 584529 events. 475249/584529 cut-off events. For 32859/32859 co-relation queries the response was YES. Maximal size of possible extension queue 15221. Compared 3468718 event pairs, 264783 based on Foata normal form. 39214/400445 useless extension candidates. Maximal degree in co-relation 378117. Up to 580665 conditions per place. [2023-08-03 21:13:55,730 INFO L140 encePairwiseOnDemand]: 631/641 looper letters, 77 selfloop transitions, 2 changer transitions 0/90 dead transitions. [2023-08-03 21:13:55,731 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 90 transitions, 386 flow [2023-08-03 21:13:55,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 21:13:55,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 21:13:55,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 933 transitions. [2023-08-03 21:13:55,733 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48517940717628705 [2023-08-03 21:13:55,733 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 933 transitions. [2023-08-03 21:13:55,733 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 933 transitions. [2023-08-03 21:13:55,733 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 21:13:55,733 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 933 transitions. [2023-08-03 21:13:55,735 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 311.0) internal successors, (933), 3 states have internal predecessors, (933), 0 states have call successors, (0), 0 states 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 21:13:55,737 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 641.0) internal successors, (2564), 4 states have internal predecessors, (2564), 0 states have call successors, (0), 0 states 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 21:13:55,738 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 641.0) internal successors, (2564), 4 states have internal predecessors, (2564), 0 states have call successors, (0), 0 states 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 21:13:55,738 INFO L175 Difference]: Start difference. First operand has 77 places, 91 transitions, 230 flow. Second operand 3 states and 933 transitions. [2023-08-03 21:13:55,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 90 transitions, 386 flow [2023-08-03 21:13:55,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 90 transitions, 386 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 21:13:55,751 INFO L231 Difference]: Finished difference. Result has 79 places, 85 transitions, 228 flow [2023-08-03 21:13:55,752 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=641, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=228, PETRI_PLACES=79, PETRI_TRANSITIONS=85} [2023-08-03 21:13:55,752 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 2 predicate places. [2023-08-03 21:13:55,752 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 85 transitions, 228 flow [2023-08-03 21:13:55,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 284.0) internal successors, (852), 3 states have internal predecessors, (852), 0 states have call successors, (0), 0 states 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 21:13:55,753 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:13:55,753 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 21:13:55,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-03 21:13:55,753 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 21:13:55,753 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:13:55,754 INFO L85 PathProgramCache]: Analyzing trace with hash 1890017972, now seen corresponding path program 1 times [2023-08-03 21:13:55,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:13:55,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106961173] [2023-08-03 21:13:55,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:13:55,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:13:55,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:13:55,778 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 21:13:55,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 21:13:55,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106961173] [2023-08-03 21:13:55,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106961173] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 21:13:55,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 21:13:55,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-03 21:13:55,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267024954] [2023-08-03 21:13:55,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 21:13:55,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 21:13:55,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 21:13:55,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 21:13:55,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 21:13:55,786 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 282 out of 641 [2023-08-03 21:13:55,787 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 85 transitions, 228 flow. Second operand has 3 states, 3 states have (on average 285.0) internal successors, (855), 3 states have internal predecessors, (855), 0 states have call successors, (0), 0 states 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 21:13:55,787 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 21:13:55,788 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 282 of 641 [2023-08-03 21:13:55,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 21:14:24,567 INFO L124 PetriNetUnfolderBase]: 473552/586247 cut-off events. [2023-08-03 21:14:24,569 INFO L125 PetriNetUnfolderBase]: For 30104/30104 co-relation queries the response was YES. [2023-08-03 21:14:25,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1179152 conditions, 586247 events. 473552/586247 cut-off events. For 30104/30104 co-relation queries the response was YES. Maximal size of possible extension queue 15420. Compared 3571396 event pairs, 228647 based on Foata normal form. 0/363261 useless extension candidates. Maximal degree in co-relation 631035. Up to 576704 conditions per place. [2023-08-03 21:14:27,874 INFO L140 encePairwiseOnDemand]: 638/641 looper letters, 101 selfloop transitions, 2 changer transitions 0/114 dead transitions. [2023-08-03 21:14:27,874 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 114 transitions, 492 flow [2023-08-03 21:14:27,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 21:14:27,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 21:14:27,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 949 transitions. [2023-08-03 21:14:27,877 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49349973998959956 [2023-08-03 21:14:27,877 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 949 transitions. [2023-08-03 21:14:27,877 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 949 transitions. [2023-08-03 21:14:27,878 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 21:14:27,878 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 949 transitions. [2023-08-03 21:14:27,879 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 316.3333333333333) internal successors, (949), 3 states have internal predecessors, (949), 0 states have call successors, (0), 0 states 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 21:14:27,881 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 641.0) internal successors, (2564), 4 states have internal predecessors, (2564), 0 states have call successors, (0), 0 states 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 21:14:27,882 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 641.0) internal successors, (2564), 4 states have internal predecessors, (2564), 0 states have call successors, (0), 0 states 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 21:14:27,882 INFO L175 Difference]: Start difference. First operand has 79 places, 85 transitions, 228 flow. Second operand 3 states and 949 transitions. [2023-08-03 21:14:27,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 114 transitions, 492 flow [2023-08-03 21:14:27,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 114 transitions, 490 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 21:14:27,893 INFO L231 Difference]: Finished difference. Result has 81 places, 86 transitions, 238 flow [2023-08-03 21:14:27,894 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=641, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=238, PETRI_PLACES=81, PETRI_TRANSITIONS=86} [2023-08-03 21:14:27,895 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 4 predicate places. [2023-08-03 21:14:27,895 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 86 transitions, 238 flow [2023-08-03 21:14:27,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 285.0) internal successors, (855), 3 states have internal predecessors, (855), 0 states have call successors, (0), 0 states 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 21:14:27,896 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:14:27,896 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1] [2023-08-03 21:14:27,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-03 21:14:27,896 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 21:14:27,896 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:14:27,896 INFO L85 PathProgramCache]: Analyzing trace with hash -1271405941, now seen corresponding path program 1 times [2023-08-03 21:14:27,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:14:27,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725326820] [2023-08-03 21:14:27,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:14:27,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:14:27,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:14:27,965 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 21:14:27,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 21:14:27,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725326820] [2023-08-03 21:14:27,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725326820] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 21:14:27,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 21:14:27,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 21:14:27,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801080560] [2023-08-03 21:14:27,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 21:14:27,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 21:14:27,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 21:14:27,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 21:14:27,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 21:14:27,982 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 282 out of 641 [2023-08-03 21:14:27,982 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 86 transitions, 238 flow. Second operand has 3 states, 3 states have (on average 284.0) internal successors, (852), 3 states have internal predecessors, (852), 0 states have call successors, (0), 0 states 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 21:14:27,983 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 21:14:27,983 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 282 of 641 [2023-08-03 21:14:27,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 21:14:58,810 INFO L124 PetriNetUnfolderBase]: 475204/587384 cut-off events. [2023-08-03 21:14:58,810 INFO L125 PetriNetUnfolderBase]: For 52141/52141 co-relation queries the response was YES. [2023-08-03 21:15:00,303 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1202519 conditions, 587384 events. 475204/587384 cut-off events. For 52141/52141 co-relation queries the response was YES. Maximal size of possible extension queue 15378. Compared 3553194 event pairs, 318934 based on Foata normal form. 1/373761 useless extension candidates. Maximal degree in co-relation 385736. Up to 580625 conditions per place. [2023-08-03 21:15:02,055 INFO L140 encePairwiseOnDemand]: 638/641 looper letters, 74 selfloop transitions, 2 changer transitions 0/87 dead transitions. [2023-08-03 21:15:02,055 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 87 transitions, 392 flow [2023-08-03 21:15:02,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 21:15:02,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 21:15:02,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 921 transitions. [2023-08-03 21:15:02,058 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4789391575663027 [2023-08-03 21:15:02,058 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 921 transitions. [2023-08-03 21:15:02,058 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 921 transitions. [2023-08-03 21:15:02,058 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 21:15:02,058 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 921 transitions. [2023-08-03 21:15:02,059 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 307.0) internal successors, (921), 3 states have internal predecessors, (921), 0 states have call successors, (0), 0 states 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 21:15:02,062 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 641.0) internal successors, (2564), 4 states have internal predecessors, (2564), 0 states have call successors, (0), 0 states 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 21:15:02,063 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 641.0) internal successors, (2564), 4 states have internal predecessors, (2564), 0 states have call successors, (0), 0 states 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 21:15:02,063 INFO L175 Difference]: Start difference. First operand has 81 places, 86 transitions, 238 flow. Second operand 3 states and 921 transitions. [2023-08-03 21:15:02,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 87 transitions, 392 flow [2023-08-03 21:15:02,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 87 transitions, 390 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 21:15:02,101 INFO L231 Difference]: Finished difference. Result has 83 places, 87 transitions, 248 flow [2023-08-03 21:15:02,101 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=641, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=248, PETRI_PLACES=83, PETRI_TRANSITIONS=87} [2023-08-03 21:15:02,101 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 6 predicate places. [2023-08-03 21:15:02,102 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 87 transitions, 248 flow [2023-08-03 21:15:02,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 284.0) internal successors, (852), 3 states have internal predecessors, (852), 0 states have call successors, (0), 0 states 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 21:15:02,102 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:15:02,102 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1] [2023-08-03 21:15:02,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-03 21:15:02,102 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 21:15:02,102 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:15:02,103 INFO L85 PathProgramCache]: Analyzing trace with hash -266488457, now seen corresponding path program 1 times [2023-08-03 21:15:02,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:15:02,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653001793] [2023-08-03 21:15:02,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:15:02,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:15:02,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:15:02,134 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-03 21:15:02,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 21:15:02,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653001793] [2023-08-03 21:15:02,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653001793] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 21:15:02,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1194217306] [2023-08-03 21:15:02,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:15:02,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 21:15:02,135 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 21:15:02,137 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 21:15:02,143 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 21:15:02,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:15:02,203 INFO L262 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 21:15:02,204 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 21:15:02,404 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-03 21:15:02,404 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 21:15:02,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1194217306] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 21:15:02,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 21:15:02,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2023-08-03 21:15:02,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335063587] [2023-08-03 21:15:02,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 21:15:02,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 21:15:02,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 21:15:02,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 21:15:02,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 21:15:02,417 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 281 out of 641 [2023-08-03 21:15:02,418 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 87 transitions, 248 flow. Second operand has 5 states, 5 states have (on average 283.0) internal successors, (1415), 5 states have internal predecessors, (1415), 0 states have call successors, (0), 0 states 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 21:15:02,418 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 21:15:02,418 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 281 of 641 [2023-08-03 21:15:02,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 21:15:31,392 INFO L124 PetriNetUnfolderBase]: 475047/587159 cut-off events. [2023-08-03 21:15:31,392 INFO L125 PetriNetUnfolderBase]: For 51925/51925 co-relation queries the response was YES. [2023-08-03 21:15:32,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1201548 conditions, 587159 events. 475047/587159 cut-off events. For 51925/51925 co-relation queries the response was YES. Maximal size of possible extension queue 15366. Compared 3538262 event pairs, 192750 based on Foata normal form. 25/373648 useless extension candidates. Maximal degree in co-relation 1201531. Up to 580342 conditions per place. [2023-08-03 21:15:34,956 INFO L140 encePairwiseOnDemand]: 637/641 looper letters, 86 selfloop transitions, 4 changer transitions 0/100 dead transitions. [2023-08-03 21:15:34,957 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 100 transitions, 454 flow [2023-08-03 21:15:34,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 21:15:34,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 21:15:34,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1494 transitions. [2023-08-03 21:15:34,960 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46614664586583465 [2023-08-03 21:15:34,960 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1494 transitions. [2023-08-03 21:15:34,960 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1494 transitions. [2023-08-03 21:15:34,960 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 21:15:34,960 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1494 transitions. [2023-08-03 21:15:34,963 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 298.8) internal successors, (1494), 5 states have internal predecessors, (1494), 0 states have call successors, (0), 0 states 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 21:15:34,966 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 641.0) internal successors, (3846), 6 states have internal predecessors, (3846), 0 states have call successors, (0), 0 states 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 21:15:34,967 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 641.0) internal successors, (3846), 6 states have internal predecessors, (3846), 0 states have call successors, (0), 0 states 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 21:15:34,967 INFO L175 Difference]: Start difference. First operand has 83 places, 87 transitions, 248 flow. Second operand 5 states and 1494 transitions. [2023-08-03 21:15:34,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 100 transitions, 454 flow [2023-08-03 21:15:34,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 100 transitions, 444 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-03 21:15:34,989 INFO L231 Difference]: Finished difference. Result has 85 places, 87 transitions, 255 flow [2023-08-03 21:15:34,989 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=641, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=255, PETRI_PLACES=85, PETRI_TRANSITIONS=87} [2023-08-03 21:15:34,990 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 8 predicate places. [2023-08-03 21:15:34,990 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 87 transitions, 255 flow [2023-08-03 21:15:34,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 283.0) internal successors, (1415), 5 states have internal predecessors, (1415), 0 states have call successors, (0), 0 states 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 21:15:34,991 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:15:34,991 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 21:15:35,014 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-03 21:15:35,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 21:15:35,195 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 21:15:35,195 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:15:35,195 INFO L85 PathProgramCache]: Analyzing trace with hash 1036367691, now seen corresponding path program 1 times [2023-08-03 21:15:35,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:15:35,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609497479] [2023-08-03 21:15:35,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:15:35,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:15:35,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:15:35,231 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-03 21:15:35,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 21:15:35,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609497479] [2023-08-03 21:15:35,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609497479] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 21:15:35,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [156552000] [2023-08-03 21:15:35,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:15:35,233 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 21:15:35,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 21:15:35,234 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 21:15:35,237 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 21:15:35,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:15:35,301 INFO L262 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 21:15:35,302 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 21:15:35,313 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-03 21:15:35,313 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 21:15:35,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [156552000] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 21:15:35,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 21:15:35,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-08-03 21:15:35,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657591659] [2023-08-03 21:15:35,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 21:15:35,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 21:15:35,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 21:15:35,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 21:15:35,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 21:15:35,321 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 282 out of 641 [2023-08-03 21:15:35,322 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 87 transitions, 255 flow. Second operand has 3 states, 3 states have (on average 286.3333333333333) internal successors, (859), 3 states have internal predecessors, (859), 0 states have call successors, (0), 0 states 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 21:15:35,323 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 21:15:35,323 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 282 of 641 [2023-08-03 21:15:35,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 21:15:57,951 INFO L124 PetriNetUnfolderBase]: 347250/436325 cut-off events. [2023-08-03 21:15:57,951 INFO L125 PetriNetUnfolderBase]: For 28164/28164 co-relation queries the response was YES. [2023-08-03 21:15:58,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 893303 conditions, 436325 events. 347250/436325 cut-off events. For 28164/28164 co-relation queries the response was YES. Maximal size of possible extension queue 10961. Compared 2751376 event pairs, 155435 based on Foata normal form. 0/289024 useless extension candidates. Maximal degree in co-relation 893279. Up to 287850 conditions per place. [2023-08-03 21:16:00,290 INFO L140 encePairwiseOnDemand]: 638/641 looper letters, 127 selfloop transitions, 2 changer transitions 0/139 dead transitions. [2023-08-03 21:16:00,290 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 139 transitions, 627 flow [2023-08-03 21:16:00,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 21:16:00,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 21:16:00,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 972 transitions. [2023-08-03 21:16:00,310 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5054602184087363 [2023-08-03 21:16:00,310 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 972 transitions. [2023-08-03 21:16:00,310 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 972 transitions. [2023-08-03 21:16:00,311 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 21:16:00,311 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 972 transitions. [2023-08-03 21:16:00,312 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 324.0) internal successors, (972), 3 states have internal predecessors, (972), 0 states have call successors, (0), 0 states 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 21:16:00,315 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 641.0) internal successors, (2564), 4 states have internal predecessors, (2564), 0 states have call successors, (0), 0 states 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 21:16:00,315 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 641.0) internal successors, (2564), 4 states have internal predecessors, (2564), 0 states have call successors, (0), 0 states 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 21:16:00,316 INFO L175 Difference]: Start difference. First operand has 85 places, 87 transitions, 255 flow. Second operand 3 states and 972 transitions. [2023-08-03 21:16:00,316 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 139 transitions, 627 flow [2023-08-03 21:16:00,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 139 transitions, 620 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-03 21:16:00,319 INFO L231 Difference]: Finished difference. Result has 86 places, 88 transitions, 260 flow [2023-08-03 21:16:00,319 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=641, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=260, PETRI_PLACES=86, PETRI_TRANSITIONS=88} [2023-08-03 21:16:00,320 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 9 predicate places. [2023-08-03 21:16:00,320 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 88 transitions, 260 flow [2023-08-03 21:16:00,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 286.3333333333333) internal successors, (859), 3 states have internal predecessors, (859), 0 states have call successors, (0), 0 states 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 21:16:00,320 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:16:00,320 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 21:16:00,336 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-03 21:16:00,524 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,SelfDestructingSolverStorable7 [2023-08-03 21:16:00,525 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] === [2023-08-03 21:16:00,525 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:16:00,525 INFO L85 PathProgramCache]: Analyzing trace with hash -123455103, now seen corresponding path program 1 times [2023-08-03 21:16:00,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:16:00,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130547900] [2023-08-03 21:16:00,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:16:00,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:16:00,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:16:00,579 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-08-03 21:16:00,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 21:16:00,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130547900] [2023-08-03 21:16:00,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130547900] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 21:16:00,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [677928031] [2023-08-03 21:16:00,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:16:00,579 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 21:16:00,579 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 21:16:00,593 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 21:16:00,653 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 21:16:00,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:16:00,716 INFO L262 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 21:16:00,717 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 21:16:00,726 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-08-03 21:16:00,726 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 21:16:00,739 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-08-03 21:16:00,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [677928031] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 21:16:00,739 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 21:16:00,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-03 21:16:00,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629856821] [2023-08-03 21:16:00,739 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 21:16:00,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 21:16:00,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 21:16:00,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 21:16:00,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 21:16:00,749 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 281 out of 641 [2023-08-03 21:16:00,750 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 88 transitions, 260 flow. Second operand has 5 states, 5 states have (on average 284.0) internal successors, (1420), 5 states have internal predecessors, (1420), 0 states have call successors, (0), 0 states 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 21:16:00,750 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 21:16:00,750 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 281 of 641 [2023-08-03 21:16:00,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 21:16:21,203 INFO L124 PetriNetUnfolderBase]: 316454/392684 cut-off events. [2023-08-03 21:16:21,203 INFO L125 PetriNetUnfolderBase]: For 80786/80786 co-relation queries the response was YES. [2023-08-03 21:16:22,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 828503 conditions, 392684 events. 316454/392684 cut-off events. For 80786/80786 co-relation queries the response was YES. Maximal size of possible extension queue 10271. Compared 2314628 event pairs, 129647 based on Foata normal form. 5/260092 useless extension candidates. Maximal degree in co-relation 828479. Up to 389324 conditions per place. [2023-08-03 21:16:23,446 INFO L140 encePairwiseOnDemand]: 638/641 looper letters, 87 selfloop transitions, 3 changer transitions 0/100 dead transitions. [2023-08-03 21:16:23,447 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 100 transitions, 460 flow [2023-08-03 21:16:23,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 21:16:23,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 21:16:23,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1212 transitions. [2023-08-03 21:16:23,450 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47269890795631825 [2023-08-03 21:16:23,450 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1212 transitions. [2023-08-03 21:16:23,451 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1212 transitions. [2023-08-03 21:16:23,451 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 21:16:23,451 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1212 transitions. [2023-08-03 21:16:23,467 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 303.0) internal successors, (1212), 4 states have internal predecessors, (1212), 0 states have call successors, (0), 0 states 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 21:16:23,469 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 641.0) internal successors, (3205), 5 states have internal predecessors, (3205), 0 states have call successors, (0), 0 states 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 21:16:23,470 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 641.0) internal successors, (3205), 5 states have internal predecessors, (3205), 0 states have call successors, (0), 0 states 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 21:16:23,470 INFO L175 Difference]: Start difference. First operand has 86 places, 88 transitions, 260 flow. Second operand 4 states and 1212 transitions. [2023-08-03 21:16:23,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 100 transitions, 460 flow [2023-08-03 21:16:24,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 100 transitions, 458 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 21:16:24,244 INFO L231 Difference]: Finished difference. Result has 88 places, 87 transitions, 256 flow [2023-08-03 21:16:24,245 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=641, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=256, PETRI_PLACES=88, PETRI_TRANSITIONS=87} [2023-08-03 21:16:24,247 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 11 predicate places. [2023-08-03 21:16:24,247 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 87 transitions, 256 flow [2023-08-03 21:16:24,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 284.0) internal successors, (1420), 5 states have internal predecessors, (1420), 0 states have call successors, (0), 0 states 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 21:16:24,247 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:16:24,247 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 21:16:24,251 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-03 21:16:24,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 21:16:24,451 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 21:16:24,452 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:16:24,452 INFO L85 PathProgramCache]: Analyzing trace with hash 1185625995, now seen corresponding path program 1 times [2023-08-03 21:16:24,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:16:24,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559887091] [2023-08-03 21:16:24,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:16:24,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:16:24,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:16:24,559 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-03 21:16:24,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 21:16:24,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559887091] [2023-08-03 21:16:24,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559887091] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 21:16:24,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [495231843] [2023-08-03 21:16:24,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:16:24,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 21:16:24,560 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 21:16:24,561 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 21:16:24,563 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 21:16:24,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:16:24,629 INFO L262 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 21:16:24,631 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 21:16:24,651 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-03 21:16:24,651 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 21:16:24,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [495231843] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 21:16:24,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 21:16:24,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2023-08-03 21:16:24,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49944483] [2023-08-03 21:16:24,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 21:16:24,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 21:16:24,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 21:16:24,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 21:16:24,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 21:16:24,663 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 281 out of 641 [2023-08-03 21:16:24,664 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 87 transitions, 256 flow. Second operand has 5 states, 5 states have (on average 284.0) internal successors, (1420), 5 states have internal predecessors, (1420), 0 states have call successors, (0), 0 states 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 21:16:24,664 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 21:16:24,664 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 281 of 641 [2023-08-03 21:16:24,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 21:16:41,939 INFO L124 PetriNetUnfolderBase]: 273824/345000 cut-off events. [2023-08-03 21:16:41,940 INFO L125 PetriNetUnfolderBase]: For 20711/20711 co-relation queries the response was YES. [2023-08-03 21:16:42,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 724920 conditions, 345000 events. 273824/345000 cut-off events. For 20711/20711 co-relation queries the response was YES. Maximal size of possible extension queue 9225. Compared 2156548 event pairs, 3500 based on Foata normal form. 8100/238475 useless extension candidates. Maximal degree in co-relation 724895. Up to 293249 conditions per place. [2023-08-03 21:16:43,945 INFO L140 encePairwiseOnDemand]: 637/641 looper letters, 156 selfloop transitions, 4 changer transitions 0/169 dead transitions. [2023-08-03 21:16:43,946 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 169 transitions, 740 flow [2023-08-03 21:16:43,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 21:16:43,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 21:16:43,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1563 transitions. [2023-08-03 21:16:43,949 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4876755070202808 [2023-08-03 21:16:43,949 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1563 transitions. [2023-08-03 21:16:43,949 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1563 transitions. [2023-08-03 21:16:43,951 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 21:16:43,951 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1563 transitions. [2023-08-03 21:16:43,953 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 312.6) internal successors, (1563), 5 states have internal predecessors, (1563), 0 states have call successors, (0), 0 states 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 21:16:43,956 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 641.0) internal successors, (3846), 6 states have internal predecessors, (3846), 0 states have call successors, (0), 0 states 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 21:16:43,957 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 641.0) internal successors, (3846), 6 states have internal predecessors, (3846), 0 states have call successors, (0), 0 states 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 21:16:43,957 INFO L175 Difference]: Start difference. First operand has 88 places, 87 transitions, 256 flow. Second operand 5 states and 1563 transitions. [2023-08-03 21:16:43,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 169 transitions, 740 flow [2023-08-03 21:17:04,110 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 169 transitions, 728 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-03 21:17:04,114 INFO L231 Difference]: Finished difference. Result has 88 places, 87 transitions, 261 flow [2023-08-03 21:17:04,115 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=641, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=261, PETRI_PLACES=88, PETRI_TRANSITIONS=87} [2023-08-03 21:17:04,115 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 11 predicate places. [2023-08-03 21:17:04,116 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 87 transitions, 261 flow [2023-08-03 21:17:04,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 284.0) internal successors, (1420), 5 states have internal predecessors, (1420), 0 states have call successors, (0), 0 states 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 21:17:04,116 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:17:04,116 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 21:17:04,123 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 21:17:04,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 21:17:04,320 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 21:17:04,332 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:17:04,333 INFO L85 PathProgramCache]: Analyzing trace with hash 1124109062, now seen corresponding path program 1 times [2023-08-03 21:17:04,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:17:04,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13641205] [2023-08-03 21:17:04,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:17:04,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:17:04,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:17:04,397 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 21:17:04,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 21:17:04,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13641205] [2023-08-03 21:17:04,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13641205] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 21:17:04,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [853694436] [2023-08-03 21:17:04,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:17:04,398 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 21:17:04,398 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 21:17:04,401 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 21:17:04,408 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 21:17:04,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:17:04,474 INFO L262 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 21:17:04,475 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 21:17:04,482 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-08-03 21:17:04,482 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 21:17:04,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [853694436] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 21:17:04,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 21:17:04,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-08-03 21:17:04,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895273128] [2023-08-03 21:17:04,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 21:17:04,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 21:17:04,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 21:17:04,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 21:17:04,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 21:17:04,493 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 282 out of 641 [2023-08-03 21:17:04,493 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 87 transitions, 261 flow. Second operand has 3 states, 3 states have (on average 288.0) internal successors, (864), 3 states have internal predecessors, (864), 0 states have call successors, (0), 0 states 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 21:17:04,494 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 21:17:04,494 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 282 of 641 [2023-08-03 21:17:04,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand