/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_bench-exp2x3.wvr_bound2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 19:22:14,547 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 19:22:14,617 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 19:22:14,625 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 19:22:14,625 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 19:22:14,625 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 19:22:14,626 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 19:22:14,658 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 19:22:14,659 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 19:22:14,659 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 19:22:14,660 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 19:22:14,660 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 19:22:14,663 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 19:22:14,666 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 19:22:14,666 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 19:22:14,667 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 19:22:14,668 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 19:22:14,668 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 19:22:14,668 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 19:22:14,668 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 19:22:14,669 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 19:22:14,669 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 19:22:14,669 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 19:22:14,669 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 19:22:14,670 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 19:22:14,671 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 19:22:14,671 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 19:22:14,671 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 19:22:14,671 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 19:22:14,672 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 19:22:14,673 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 19:22:14,673 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 19:22:14,673 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 19:22:14,673 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 19:22:14,673 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 19:22:14,673 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 19:22:14,673 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 19:22:14,674 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 19:22:14,674 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 19:22:14,674 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 19:22:14,674 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 19:22:14,674 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> TOGETHER [2023-08-03 19:22:14,913 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 19:22:14,935 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 19:22:14,937 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 19:22:14,938 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 19:22:14,939 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 19:22:14,939 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/weaver_bench-exp2x3.wvr_bound2.c [2023-08-03 19:22:15,960 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 19:22:16,117 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 19:22:16,117 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/weaver_bench-exp2x3.wvr_bound2.c [2023-08-03 19:22:16,124 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f21bf8c99/2b5d3037ed90436b905c94050e4c30a7/FLAG702d2240f [2023-08-03 19:22:16,138 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f21bf8c99/2b5d3037ed90436b905c94050e4c30a7 [2023-08-03 19:22:16,140 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 19:22:16,142 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 19:22:16,142 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 19:22:16,143 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 19:22:16,145 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 19:22:16,146 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 07:22:16" (1/1) ... [2023-08-03 19:22:16,147 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f3f98f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:22:16, skipping insertion in model container [2023-08-03 19:22:16,147 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 07:22:16" (1/1) ... [2023-08-03 19:22:16,168 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 19:22:16,345 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_bench-exp2x3.wvr_bound2.c[2561,2574] [2023-08-03 19:22:16,346 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 19:22:16,353 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 19:22:16,373 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_bench-exp2x3.wvr_bound2.c[2561,2574] [2023-08-03 19:22:16,374 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 19:22:16,386 INFO L206 MainTranslator]: Completed translation [2023-08-03 19:22:16,386 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:22:16 WrapperNode [2023-08-03 19:22:16,387 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 19:22:16,391 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 19:22:16,391 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 19:22:16,391 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 19:22:16,397 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:22:16" (1/1) ... [2023-08-03 19:22:16,414 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:22:16" (1/1) ... [2023-08-03 19:22:16,439 INFO L138 Inliner]: procedures = 20, calls = 32, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 160 [2023-08-03 19:22:16,439 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 19:22:16,440 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 19:22:16,440 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 19:22:16,440 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 19:22:16,450 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:22:16" (1/1) ... [2023-08-03 19:22:16,451 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:22:16" (1/1) ... [2023-08-03 19:22:16,453 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:22:16" (1/1) ... [2023-08-03 19:22:16,453 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:22:16" (1/1) ... [2023-08-03 19:22:16,458 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:22:16" (1/1) ... [2023-08-03 19:22:16,466 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:22:16" (1/1) ... [2023-08-03 19:22:16,468 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:22:16" (1/1) ... [2023-08-03 19:22:16,469 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:22:16" (1/1) ... [2023-08-03 19:22:16,471 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 19:22:16,472 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 19:22:16,472 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 19:22:16,472 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 19:22:16,472 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:22:16" (1/1) ... [2023-08-03 19:22:16,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 19:22:16,488 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:22:16,498 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-03 19:22:16,516 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-03 19:22:16,525 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 19:22:16,525 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-03 19:22:16,525 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-03 19:22:16,526 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-03 19:22:16,526 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-03 19:22:16,526 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-03 19:22:16,526 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-03 19:22:16,526 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-08-03 19:22:16,526 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-08-03 19:22:16,526 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 19:22:16,526 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 19:22:16,526 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 19:22:16,526 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 19:22:16,527 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 19:22:16,527 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-03 19:22:16,527 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 19:22:16,528 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-03 19:22:16,608 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 19:22:16,609 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 19:22:16,814 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 19:22:16,820 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 19:22:16,820 INFO L302 CfgBuilder]: Removed 12 assume(true) statements. [2023-08-03 19:22:16,822 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 07:22:16 BoogieIcfgContainer [2023-08-03 19:22:16,822 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 19:22:16,824 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 19:22:16,825 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 19:22:16,827 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 19:22:16,827 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 07:22:16" (1/3) ... [2023-08-03 19:22:16,828 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@122e30ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 07:22:16, skipping insertion in model container [2023-08-03 19:22:16,828 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:22:16" (2/3) ... [2023-08-03 19:22:16,828 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@122e30ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 07:22:16, skipping insertion in model container [2023-08-03 19:22:16,828 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 07:22:16" (3/3) ... [2023-08-03 19:22:16,829 INFO L112 eAbstractionObserver]: Analyzing ICFG weaver_bench-exp2x3.wvr_bound2.c [2023-08-03 19:22:16,835 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 19:22:16,843 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 19:22:16,843 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-03 19:22:16,844 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 19:22:16,952 INFO L144 ThreadInstanceAdder]: Constructed 16 joinOtherThreadTransitions. [2023-08-03 19:22:16,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 166 places, 191 transitions, 450 flow [2023-08-03 19:22:17,235 INFO L124 PetriNetUnfolderBase]: 269/1437 cut-off events. [2023-08-03 19:22:17,236 INFO L125 PetriNetUnfolderBase]: For 128/128 co-relation queries the response was YES. [2023-08-03 19:22:17,249 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1615 conditions, 1437 events. 269/1437 cut-off events. For 128/128 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 9424 event pairs, 0 based on Foata normal form. 0/1186 useless extension candidates. Maximal degree in co-relation 798. Up to 33 conditions per place. [2023-08-03 19:22:17,249 INFO L82 GeneralOperation]: Start removeDead. Operand has 166 places, 191 transitions, 450 flow [2023-08-03 19:22:17,263 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 166 places, 191 transitions, 450 flow [2023-08-03 19:22:17,266 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 19:22:17,277 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 166 places, 191 transitions, 450 flow [2023-08-03 19:22:17,283 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 166 places, 191 transitions, 450 flow [2023-08-03 19:22:17,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 166 places, 191 transitions, 450 flow [2023-08-03 19:22:17,433 INFO L124 PetriNetUnfolderBase]: 269/1437 cut-off events. [2023-08-03 19:22:17,434 INFO L125 PetriNetUnfolderBase]: For 128/128 co-relation queries the response was YES. [2023-08-03 19:22:17,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1615 conditions, 1437 events. 269/1437 cut-off events. For 128/128 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 9424 event pairs, 0 based on Foata normal form. 0/1186 useless extension candidates. Maximal degree in co-relation 798. Up to 33 conditions per place. [2023-08-03 19:22:17,457 INFO L119 LiptonReduction]: Number of co-enabled transitions 5280 [2023-08-03 19:22:21,104 INFO L134 LiptonReduction]: Checked pairs total: 12402 [2023-08-03 19:22:21,104 INFO L136 LiptonReduction]: Total number of compositions: 147 [2023-08-03 19:22:21,114 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 19:22:21,120 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;@6b9b34e5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 19:22:21,120 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-08-03 19:22:21,124 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 19:22:21,124 INFO L124 PetriNetUnfolderBase]: 4/31 cut-off events. [2023-08-03 19:22:21,125 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 19:22:21,125 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:22:21,125 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-03 19:22:21,125 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-03 19:22:21,129 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:22:21,129 INFO L85 PathProgramCache]: Analyzing trace with hash -1160639439, now seen corresponding path program 1 times [2023-08-03 19:22:21,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:22:21,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464514276] [2023-08-03 19:22:21,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:22:21,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:22:21,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 19:22:21,250 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 19:22:21,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 19:22:21,287 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 19:22:21,289 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 19:22:21,290 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2023-08-03 19:22:21,291 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2023-08-03 19:22:21,291 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2023-08-03 19:22:21,292 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2023-08-03 19:22:21,292 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2023-08-03 19:22:21,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 19:22:21,292 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-03 19:22:21,295 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 19:22:21,295 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 19:22:21,325 INFO L144 ThreadInstanceAdder]: Constructed 32 joinOtherThreadTransitions. [2023-08-03 19:22:21,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 194 places, 235 transitions, 614 flow [2023-08-03 19:22:23,776 INFO L124 PetriNetUnfolderBase]: 5482/20040 cut-off events. [2023-08-03 19:22:23,776 INFO L125 PetriNetUnfolderBase]: For 4176/4176 co-relation queries the response was YES. [2023-08-03 19:22:23,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24425 conditions, 20040 events. 5482/20040 cut-off events. For 4176/4176 co-relation queries the response was YES. Maximal size of possible extension queue 370. Compared 209353 event pairs, 162 based on Foata normal form. 0/17079 useless extension candidates. Maximal degree in co-relation 12057. Up to 1024 conditions per place. [2023-08-03 19:22:23,907 INFO L82 GeneralOperation]: Start removeDead. Operand has 194 places, 235 transitions, 614 flow [2023-08-03 19:22:24,069 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 194 places, 235 transitions, 614 flow [2023-08-03 19:22:24,070 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 19:22:24,070 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 194 places, 235 transitions, 614 flow [2023-08-03 19:22:24,070 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 194 places, 235 transitions, 614 flow [2023-08-03 19:22:24,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 194 places, 235 transitions, 614 flow [2023-08-03 19:22:25,839 INFO L124 PetriNetUnfolderBase]: 5482/20040 cut-off events. [2023-08-03 19:22:25,839 INFO L125 PetriNetUnfolderBase]: For 4176/4176 co-relation queries the response was YES. [2023-08-03 19:22:25,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24425 conditions, 20040 events. 5482/20040 cut-off events. For 4176/4176 co-relation queries the response was YES. Maximal size of possible extension queue 370. Compared 209353 event pairs, 162 based on Foata normal form. 0/17079 useless extension candidates. Maximal degree in co-relation 12057. Up to 1024 conditions per place. [2023-08-03 19:22:26,162 INFO L119 LiptonReduction]: Number of co-enabled transitions 13440 [2023-08-03 19:22:29,433 INFO L134 LiptonReduction]: Checked pairs total: 65126 [2023-08-03 19:22:29,434 INFO L136 LiptonReduction]: Total number of compositions: 155 [2023-08-03 19:22:29,436 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 19:22:29,437 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;@6b9b34e5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 19:22:29,437 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-08-03 19:22:29,441 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 19:22:29,441 INFO L124 PetriNetUnfolderBase]: 5/59 cut-off events. [2023-08-03 19:22:29,441 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-03 19:22:29,441 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:22:29,442 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:22:29,442 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-03 19:22:29,442 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:22:29,442 INFO L85 PathProgramCache]: Analyzing trace with hash -25551828, now seen corresponding path program 1 times [2023-08-03 19:22:29,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:22:29,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303390604] [2023-08-03 19:22:29,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:22:29,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:22:29,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:22:29,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 19:22:29,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:22:29,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303390604] [2023-08-03 19:22:29,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303390604] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:22:29,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 19:22:29,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 19:22:29,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674042605] [2023-08-03 19:22:29,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:22:29,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 19:22:29,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:22:29,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 19:22:29,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 19:22:29,600 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 390 [2023-08-03 19:22:29,604 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 102 transitions, 348 flow. Second operand has 3 states, 3 states have (on average 175.0) internal successors, (525), 3 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:22:29,604 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:22:29,604 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 390 [2023-08-03 19:22:29,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:22:58,388 INFO L124 PetriNetUnfolderBase]: 308546/425713 cut-off events. [2023-08-03 19:22:58,389 INFO L125 PetriNetUnfolderBase]: For 99890/99890 co-relation queries the response was YES. [2023-08-03 19:23:00,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 898601 conditions, 425713 events. 308546/425713 cut-off events. For 99890/99890 co-relation queries the response was YES. Maximal size of possible extension queue 6469. Compared 3054286 event pairs, 212879 based on Foata normal form. 0/396385 useless extension candidates. Maximal degree in co-relation 371895. Up to 398775 conditions per place. [2023-08-03 19:23:02,416 INFO L140 encePairwiseOnDemand]: 386/390 looper letters, 74 selfloop transitions, 2 changer transitions 0/104 dead transitions. [2023-08-03 19:23:02,416 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 104 transitions, 504 flow [2023-08-03 19:23:02,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 19:23:02,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 19:23:02,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 594 transitions. [2023-08-03 19:23:02,434 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5076923076923077 [2023-08-03 19:23:02,435 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 594 transitions. [2023-08-03 19:23:02,435 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 594 transitions. [2023-08-03 19:23:02,439 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:23:02,441 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 594 transitions. [2023-08-03 19:23:02,446 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 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 19:23:02,452 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 390.0) internal successors, (1560), 4 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:23:02,453 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 390.0) internal successors, (1560), 4 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:23:02,454 INFO L175 Difference]: Start difference. First operand has 79 places, 102 transitions, 348 flow. Second operand 3 states and 594 transitions. [2023-08-03 19:23:02,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 104 transitions, 504 flow [2023-08-03 19:23:02,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 104 transitions, 504 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 19:23:02,543 INFO L231 Difference]: Finished difference. Result has 81 places, 102 transitions, 358 flow [2023-08-03 19:23:02,545 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=346, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=358, PETRI_PLACES=81, PETRI_TRANSITIONS=102} [2023-08-03 19:23:02,548 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, 2 predicate places. [2023-08-03 19:23:02,548 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 102 transitions, 358 flow [2023-08-03 19:23:02,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 175.0) internal successors, (525), 3 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:23:02,550 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:23:02,552 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-03 19:23:02,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-03 19:23:02,557 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-03 19:23:02,561 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:23:02,561 INFO L85 PathProgramCache]: Analyzing trace with hash 28579356, now seen corresponding path program 1 times [2023-08-03 19:23:02,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:23:02,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552997520] [2023-08-03 19:23:02,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:23:02,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:23:02,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:23:02,750 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 19:23:02,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:23:02,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552997520] [2023-08-03 19:23:02,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552997520] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:23:02,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [536638704] [2023-08-03 19:23:02,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:23:02,751 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:23:02,751 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:23:02,754 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:23:02,758 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-03 19:23:02,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:23:02,833 INFO L262 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 19:23:02,835 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:23:02,916 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 19:23:02,916 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:23:02,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [536638704] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:23:02,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 19:23:02,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-08-03 19:23:02,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46123339] [2023-08-03 19:23:02,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:23:02,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:23:02,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:23:02,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:23:02,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 19:23:02,930 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 390 [2023-08-03 19:23:02,931 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 102 transitions, 358 flow. Second operand has 5 states, 5 states have (on average 172.6) internal successors, (863), 5 states have internal predecessors, (863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:23:02,931 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:23:02,931 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 390 [2023-08-03 19:23:02,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:23:30,502 INFO L124 PetriNetUnfolderBase]: 308542/425703 cut-off events. [2023-08-03 19:23:30,502 INFO L125 PetriNetUnfolderBase]: For 99892/99892 co-relation queries the response was YES. [2023-08-03 19:23:32,680 INFO L83 FinitePrefix]: Finished finitePrefix Result has 898596 conditions, 425703 events. 308542/425703 cut-off events. For 99892/99892 co-relation queries the response was YES. Maximal size of possible extension queue 6466. Compared 3056683 event pairs, 182676 based on Foata normal form. 4/396385 useless extension candidates. Maximal degree in co-relation 557802. Up to 398754 conditions per place. [2023-08-03 19:23:34,617 INFO L140 encePairwiseOnDemand]: 386/390 looper letters, 75 selfloop transitions, 4 changer transitions 0/106 dead transitions. [2023-08-03 19:23:34,618 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 106 transitions, 522 flow [2023-08-03 19:23:34,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 19:23:34,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 19:23:34,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 935 transitions. [2023-08-03 19:23:34,623 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4794871794871795 [2023-08-03 19:23:34,623 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 935 transitions. [2023-08-03 19:23:34,623 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 935 transitions. [2023-08-03 19:23:34,624 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:23:34,624 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 935 transitions. [2023-08-03 19:23:34,626 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 187.0) internal successors, (935), 5 states have internal predecessors, (935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:23:34,629 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 390.0) internal successors, (2340), 6 states have internal predecessors, (2340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:23:34,630 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 390.0) internal successors, (2340), 6 states have internal predecessors, (2340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:23:34,630 INFO L175 Difference]: Start difference. First operand has 81 places, 102 transitions, 358 flow. Second operand 5 states and 935 transitions. [2023-08-03 19:23:34,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 106 transitions, 522 flow [2023-08-03 19:23:34,693 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 106 transitions, 510 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-03 19:23:34,695 INFO L231 Difference]: Finished difference. Result has 83 places, 102 transitions, 361 flow [2023-08-03 19:23:34,695 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=340, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=361, PETRI_PLACES=83, PETRI_TRANSITIONS=102} [2023-08-03 19:23:34,696 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, 4 predicate places. [2023-08-03 19:23:34,696 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 102 transitions, 361 flow [2023-08-03 19:23:34,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 172.6) internal successors, (863), 5 states have internal predecessors, (863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:23:34,697 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:23:34,697 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:23:34,703 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-03 19:23:34,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:23:34,903 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-03 19:23:34,904 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:23:34,904 INFO L85 PathProgramCache]: Analyzing trace with hash -2118656453, now seen corresponding path program 1 times [2023-08-03 19:23:34,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:23:34,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178647662] [2023-08-03 19:23:34,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:23:34,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:23:34,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:23:34,965 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 19:23:34,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:23:34,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178647662] [2023-08-03 19:23:34,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178647662] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:23:34,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1436401498] [2023-08-03 19:23:34,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:23:34,966 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:23:34,966 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:23:34,973 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:23:34,977 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-03 19:23:35,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:23:35,039 INFO L262 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 19:23:35,040 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:23:35,047 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-03 19:23:35,047 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:23:35,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1436401498] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:23:35,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 19:23:35,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-03 19:23:35,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249996575] [2023-08-03 19:23:35,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:23:35,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 19:23:35,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:23:35,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 19:23:35,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:23:35,059 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 390 [2023-08-03 19:23:35,059 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 102 transitions, 361 flow. Second operand has 3 states, 3 states have (on average 176.0) internal successors, (528), 3 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:23:35,059 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:23:35,059 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 390 [2023-08-03 19:23:35,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:24:01,588 INFO L124 PetriNetUnfolderBase]: 306188/420457 cut-off events. [2023-08-03 19:24:01,588 INFO L125 PetriNetUnfolderBase]: For 93362/93362 co-relation queries the response was YES. [2023-08-03 19:24:04,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 880815 conditions, 420457 events. 306188/420457 cut-off events. For 93362/93362 co-relation queries the response was YES. Maximal size of possible extension queue 6752. Compared 2988412 event pairs, 211814 based on Foata normal form. 0/391039 useless extension candidates. Maximal degree in co-relation 389482. Up to 395497 conditions per place. [2023-08-03 19:24:05,795 INFO L140 encePairwiseOnDemand]: 387/390 looper letters, 77 selfloop transitions, 3 changer transitions 0/107 dead transitions. [2023-08-03 19:24:05,796 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 107 transitions, 531 flow [2023-08-03 19:24:05,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 19:24:05,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 19:24:05,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 595 transitions. [2023-08-03 19:24:05,798 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5085470085470085 [2023-08-03 19:24:05,798 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 595 transitions. [2023-08-03 19:24:05,798 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 595 transitions. [2023-08-03 19:24:05,798 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:24:05,798 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 595 transitions. [2023-08-03 19:24:05,800 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 198.33333333333334) internal successors, (595), 3 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:24:05,802 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 390.0) internal successors, (1560), 4 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:24:05,803 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 390.0) internal successors, (1560), 4 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:24:05,803 INFO L175 Difference]: Start difference. First operand has 83 places, 102 transitions, 361 flow. Second operand 3 states and 595 transitions. [2023-08-03 19:24:05,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 107 transitions, 531 flow [2023-08-03 19:24:05,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 107 transitions, 524 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-03 19:24:05,833 INFO L231 Difference]: Finished difference. Result has 84 places, 103 transitions, 369 flow [2023-08-03 19:24:05,833 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=354, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=369, PETRI_PLACES=84, PETRI_TRANSITIONS=103} [2023-08-03 19:24:05,834 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, 5 predicate places. [2023-08-03 19:24:05,834 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 103 transitions, 369 flow [2023-08-03 19:24:05,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 176.0) internal successors, (528), 3 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:24:05,835 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:24:05,835 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:24:05,841 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 19:24:06,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-08-03 19:24:06,039 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 (and 2 more)] === [2023-08-03 19:24:06,040 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:24:06,040 INFO L85 PathProgramCache]: Analyzing trace with hash -196788038, now seen corresponding path program 1 times [2023-08-03 19:24:06,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:24:06,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535820194] [2023-08-03 19:24:06,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:24:06,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:24:06,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:24:06,109 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-03 19:24:06,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:24:06,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535820194] [2023-08-03 19:24:06,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535820194] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:24:06,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [340729918] [2023-08-03 19:24:06,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:24:06,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:24:06,111 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:24:06,112 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:24:06,113 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-03 19:24:06,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:24:06,179 INFO L262 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 19:24:06,180 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:24:06,192 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-03 19:24:06,193 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:24:06,212 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-03 19:24:06,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [340729918] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:24:06,212 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:24:06,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-03 19:24:06,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580780230] [2023-08-03 19:24:06,212 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:24:06,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:24:06,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:24:06,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:24:06,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:24:06,227 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 390 [2023-08-03 19:24:06,228 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 103 transitions, 369 flow. Second operand has 5 states, 5 states have (on average 173.6) internal successors, (868), 5 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:24:06,228 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:24:06,228 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 390 [2023-08-03 19:24:06,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:24:32,803 INFO L124 PetriNetUnfolderBase]: 300374/411059 cut-off events. [2023-08-03 19:24:32,803 INFO L125 PetriNetUnfolderBase]: For 92512/92512 co-relation queries the response was YES. [2023-08-03 19:24:35,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 862787 conditions, 411059 events. 300374/411059 cut-off events. For 92512/92512 co-relation queries the response was YES. Maximal size of possible extension queue 6659. Compared 2890304 event pairs, 179558 based on Foata normal form. 2/382185 useless extension candidates. Maximal degree in co-relation 335532. Up to 388021 conditions per place. [2023-08-03 19:24:36,904 INFO L140 encePairwiseOnDemand]: 387/390 looper letters, 76 selfloop transitions, 3 changer transitions 0/106 dead transitions. [2023-08-03 19:24:36,904 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 106 transitions, 528 flow [2023-08-03 19:24:36,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 19:24:36,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 19:24:36,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 763 transitions. [2023-08-03 19:24:36,906 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4891025641025641 [2023-08-03 19:24:36,907 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 763 transitions. [2023-08-03 19:24:36,907 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 763 transitions. [2023-08-03 19:24:36,907 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:24:36,907 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 763 transitions. [2023-08-03 19:24:36,909 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 190.75) internal successors, (763), 4 states have internal predecessors, (763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:24:36,911 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 390.0) internal successors, (1950), 5 states have internal predecessors, (1950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:24:36,912 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 390.0) internal successors, (1950), 5 states have internal predecessors, (1950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:24:36,912 INFO L175 Difference]: Start difference. First operand has 84 places, 103 transitions, 369 flow. Second operand 4 states and 763 transitions. [2023-08-03 19:24:36,912 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 106 transitions, 528 flow [2023-08-03 19:24:36,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 106 transitions, 526 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 19:24:36,998 INFO L231 Difference]: Finished difference. Result has 86 places, 102 transitions, 364 flow [2023-08-03 19:24:36,998 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=358, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=364, PETRI_PLACES=86, PETRI_TRANSITIONS=102} [2023-08-03 19:24:36,999 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, 7 predicate places. [2023-08-03 19:24:36,999 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 102 transitions, 364 flow [2023-08-03 19:24:36,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 173.6) internal successors, (868), 5 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:24:36,999 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:24:36,999 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:24:37,004 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 19:24:37,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:24:37,200 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-03 19:24:37,201 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:24:37,201 INFO L85 PathProgramCache]: Analyzing trace with hash 1584965994, now seen corresponding path program 1 times [2023-08-03 19:24:37,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:24:37,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000862929] [2023-08-03 19:24:37,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:24:37,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:24:37,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:24:37,285 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 19:24:37,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:24:37,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000862929] [2023-08-03 19:24:37,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000862929] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:24:37,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [774145954] [2023-08-03 19:24:37,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:24:37,289 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:24:37,289 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:24:37,291 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:24:37,293 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-03 19:24:37,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:24:37,366 INFO L262 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 19:24:37,367 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:24:37,389 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 19:24:37,389 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:24:37,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [774145954] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:24:37,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 19:24:37,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2023-08-03 19:24:37,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438653811] [2023-08-03 19:24:37,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:24:37,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:24:37,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:24:37,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:24:37,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 19:24:37,404 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 390 [2023-08-03 19:24:37,405 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 102 transitions, 364 flow. Second operand has 5 states, 5 states have (on average 173.6) internal successors, (868), 5 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:24:37,406 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:24:37,406 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 390 [2023-08-03 19:24:37,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:25:04,036 INFO L124 PetriNetUnfolderBase]: 300342/411003 cut-off events. [2023-08-03 19:25:04,036 INFO L125 PetriNetUnfolderBase]: For 92492/92492 co-relation queries the response was YES. [2023-08-03 19:25:06,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 862666 conditions, 411003 events. 300342/411003 cut-off events. For 92492/92492 co-relation queries the response was YES. Maximal size of possible extension queue 6659. Compared 2889698 event pairs, 120480 based on Foata normal form. 16/382143 useless extension candidates. Maximal degree in co-relation 539656. Up to 387852 conditions per place. [2023-08-03 19:25:08,301 INFO L140 encePairwiseOnDemand]: 386/390 looper letters, 82 selfloop transitions, 4 changer transitions 0/112 dead transitions. [2023-08-03 19:25:08,301 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 112 transitions, 554 flow [2023-08-03 19:25:08,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 19:25:08,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 19:25:08,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 941 transitions. [2023-08-03 19:25:08,304 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48256410256410254 [2023-08-03 19:25:08,304 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 941 transitions. [2023-08-03 19:25:08,304 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 941 transitions. [2023-08-03 19:25:08,305 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:25:08,305 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 941 transitions. [2023-08-03 19:25:08,307 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 188.2) internal successors, (941), 5 states have internal predecessors, (941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:25:08,309 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 390.0) internal successors, (2340), 6 states have internal predecessors, (2340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:25:08,310 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 390.0) internal successors, (2340), 6 states have internal predecessors, (2340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:25:08,310 INFO L175 Difference]: Start difference. First operand has 86 places, 102 transitions, 364 flow. Second operand 5 states and 941 transitions. [2023-08-03 19:25:08,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 112 transitions, 554 flow [2023-08-03 19:25:08,394 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 112 transitions, 538 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-03 19:25:08,396 INFO L231 Difference]: Finished difference. Result has 86 places, 102 transitions, 363 flow [2023-08-03 19:25:08,397 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=342, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=363, PETRI_PLACES=86, PETRI_TRANSITIONS=102} [2023-08-03 19:25:08,397 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, 7 predicate places. [2023-08-03 19:25:08,397 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 102 transitions, 363 flow [2023-08-03 19:25:08,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 173.6) internal successors, (868), 5 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:25:08,398 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:25:08,398 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:25:08,405 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-03 19:25:08,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:25:08,605 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-03 19:25:08,605 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:25:08,605 INFO L85 PathProgramCache]: Analyzing trace with hash 1355577675, now seen corresponding path program 1 times [2023-08-03 19:25:08,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:25:08,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782582457] [2023-08-03 19:25:08,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:25:08,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:25:08,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:25:08,668 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 19:25:08,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:25:08,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782582457] [2023-08-03 19:25:08,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782582457] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:25:08,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [709800912] [2023-08-03 19:25:08,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:25:08,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:25:08,669 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:25:08,670 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:25:08,673 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-03 19:25:08,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:25:08,755 INFO L262 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 19:25:08,756 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:25:08,772 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-03 19:25:08,772 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:25:08,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [709800912] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:25:08,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 19:25:08,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-08-03 19:25:08,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072001228] [2023-08-03 19:25:08,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:25:08,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 19:25:08,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:25:08,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 19:25:08,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:25:08,781 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 390 [2023-08-03 19:25:08,782 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 102 transitions, 363 flow. Second operand has 3 states, 3 states have (on average 177.33333333333334) internal successors, (532), 3 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:25:08,782 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:25:08,782 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 390 [2023-08-03 19:25:08,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:25:35,231 INFO L124 PetriNetUnfolderBase]: 298982/408605 cut-off events. [2023-08-03 19:25:35,232 INFO L125 PetriNetUnfolderBase]: For 79662/79662 co-relation queries the response was YES. [2023-08-03 19:25:37,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 849490 conditions, 408605 events. 298982/408605 cut-off events. For 79662/79662 co-relation queries the response was YES. Maximal size of possible extension queue 7228. Compared 2862230 event pairs, 208958 based on Foata normal form. 0/379867 useless extension candidates. Maximal degree in co-relation 531880. Up to 385901 conditions per place. [2023-08-03 19:25:39,281 INFO L140 encePairwiseOnDemand]: 387/390 looper letters, 80 selfloop transitions, 3 changer transitions 0/109 dead transitions. [2023-08-03 19:25:39,281 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 109 transitions, 543 flow [2023-08-03 19:25:39,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 19:25:39,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 19:25:39,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 597 transitions. [2023-08-03 19:25:39,283 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5102564102564102 [2023-08-03 19:25:39,283 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 597 transitions. [2023-08-03 19:25:39,283 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 597 transitions. [2023-08-03 19:25:39,284 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:25:39,284 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 597 transitions. [2023-08-03 19:25:39,285 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 199.0) internal successors, (597), 3 states have internal predecessors, (597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:25:39,287 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 390.0) internal successors, (1560), 4 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:25:39,287 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 390.0) internal successors, (1560), 4 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:25:39,287 INFO L175 Difference]: Start difference. First operand has 86 places, 102 transitions, 363 flow. Second operand 3 states and 597 transitions. [2023-08-03 19:25:39,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 109 transitions, 543 flow [2023-08-03 19:25:39,328 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 109 transitions, 536 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-03 19:25:39,330 INFO L231 Difference]: Finished difference. Result has 87 places, 103 transitions, 371 flow [2023-08-03 19:25:39,330 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=356, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=371, PETRI_PLACES=87, PETRI_TRANSITIONS=103} [2023-08-03 19:25:39,331 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, 8 predicate places. [2023-08-03 19:25:39,331 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 103 transitions, 371 flow [2023-08-03 19:25:39,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 177.33333333333334) internal successors, (532), 3 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:25:39,331 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:25:39,331 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:25:39,338 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-08-03 19:25:39,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:25:39,536 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-03 19:25:39,536 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:25:39,536 INFO L85 PathProgramCache]: Analyzing trace with hash -1746678203, now seen corresponding path program 1 times [2023-08-03 19:25:39,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:25:39,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247987276] [2023-08-03 19:25:39,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:25:39,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:25:39,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:25:39,597 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-08-03 19:25:39,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:25:39,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247987276] [2023-08-03 19:25:39,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247987276] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:25:39,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [590741172] [2023-08-03 19:25:39,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:25:39,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:25:39,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:25:39,600 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:25:39,607 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-03 19:25:39,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:25:39,681 INFO L262 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 19:25:39,683 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:25:39,695 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-08-03 19:25:39,695 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:25:39,710 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-08-03 19:25:39,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [590741172] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:25:39,710 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:25:39,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-03 19:25:39,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654415890] [2023-08-03 19:25:39,710 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:25:39,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:25:39,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:25:39,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:25:39,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:25:39,722 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 390 [2023-08-03 19:25:39,723 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 103 transitions, 371 flow. Second operand has 5 states, 5 states have (on average 174.6) internal successors, (873), 5 states have internal predecessors, (873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:25:39,723 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:25:39,723 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 390 [2023-08-03 19:25:39,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:26:07,104 INFO L124 PetriNetUnfolderBase]: 295326/402997 cut-off events. [2023-08-03 19:26:07,104 INFO L125 PetriNetUnfolderBase]: For 79234/79234 co-relation queries the response was YES. [2023-08-03 19:26:09,688 INFO L83 FinitePrefix]: Finished finitePrefix Result has 838799 conditions, 402997 events. 295326/402997 cut-off events. For 79234/79234 co-relation queries the response was YES. Maximal size of possible extension queue 6878. Compared 2808147 event pairs, 179226 based on Foata normal form. 8/374707 useless extension candidates. Maximal degree in co-relation 527094. Up to 381453 conditions per place. [2023-08-03 19:26:11,398 INFO L140 encePairwiseOnDemand]: 387/390 looper letters, 81 selfloop transitions, 3 changer transitions 0/110 dead transitions. [2023-08-03 19:26:11,399 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 110 transitions, 548 flow [2023-08-03 19:26:11,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 19:26:11,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 19:26:11,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 767 transitions. [2023-08-03 19:26:11,401 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49166666666666664 [2023-08-03 19:26:11,401 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 767 transitions. [2023-08-03 19:26:11,401 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 767 transitions. [2023-08-03 19:26:11,401 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:26:11,401 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 767 transitions. [2023-08-03 19:26:11,403 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 191.75) internal successors, (767), 4 states have internal predecessors, (767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:26:11,404 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 390.0) internal successors, (1950), 5 states have internal predecessors, (1950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:26:11,405 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 390.0) internal successors, (1950), 5 states have internal predecessors, (1950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:26:11,405 INFO L175 Difference]: Start difference. First operand has 87 places, 103 transitions, 371 flow. Second operand 4 states and 767 transitions. [2023-08-03 19:26:11,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 110 transitions, 548 flow [2023-08-03 19:26:11,448 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 110 transitions, 546 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 19:26:11,449 INFO L231 Difference]: Finished difference. Result has 89 places, 102 transitions, 366 flow [2023-08-03 19:26:11,449 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=360, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=366, PETRI_PLACES=89, PETRI_TRANSITIONS=102} [2023-08-03 19:26:11,450 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, 10 predicate places. [2023-08-03 19:26:11,450 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 102 transitions, 366 flow [2023-08-03 19:26:11,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 174.6) internal successors, (873), 5 states have internal predecessors, (873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:26:11,451 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:26:11,451 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:26:11,460 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-08-03 19:26:11,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:26:11,655 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-03 19:26:11,656 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:26:11,656 INFO L85 PathProgramCache]: Analyzing trace with hash 105880996, now seen corresponding path program 1 times [2023-08-03 19:26:11,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:26:11,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614937102] [2023-08-03 19:26:11,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:26:11,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:26:11,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:26:11,716 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-03 19:26:11,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:26:11,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614937102] [2023-08-03 19:26:11,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614937102] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:26:11,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [958941082] [2023-08-03 19:26:11,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:26:11,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:26:11,717 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:26:11,718 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:26:11,721 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-03 19:26:11,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:26:11,807 INFO L262 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 19:26:11,810 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:26:11,828 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-03 19:26:11,829 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:26:11,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [958941082] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:26:11,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 19:26:11,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2023-08-03 19:26:11,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841760088] [2023-08-03 19:26:11,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:26:11,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:26:11,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:26:11,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:26:11,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 19:26:11,842 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 390 [2023-08-03 19:26:11,842 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 102 transitions, 366 flow. Second operand has 5 states, 5 states have (on average 174.6) internal successors, (873), 5 states have internal predecessors, (873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:26:11,843 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:26:11,843 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 390 [2023-08-03 19:26:11,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:26:37,970 INFO L124 PetriNetUnfolderBase]: 295134/402709 cut-off events. [2023-08-03 19:26:37,970 INFO L125 PetriNetUnfolderBase]: For 79166/79166 co-relation queries the response was YES. [2023-08-03 19:26:40,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 838187 conditions, 402709 events. 295134/402709 cut-off events. For 79166/79166 co-relation queries the response was YES. Maximal size of possible extension queue 6878. Compared 2805727 event pairs, 63598 based on Foata normal form. 64/374475 useless extension candidates. Maximal degree in co-relation 526820. Up to 380484 conditions per place. [2023-08-03 19:26:42,512 INFO L140 encePairwiseOnDemand]: 386/390 looper letters, 89 selfloop transitions, 4 changer transitions 0/118 dead transitions. [2023-08-03 19:26:42,512 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 118 transitions, 582 flow [2023-08-03 19:26:42,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 19:26:42,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 19:26:42,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 947 transitions. [2023-08-03 19:26:42,514 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4856410256410256 [2023-08-03 19:26:42,514 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 947 transitions. [2023-08-03 19:26:42,515 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 947 transitions. [2023-08-03 19:26:42,515 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:26:42,515 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 947 transitions. [2023-08-03 19:26:42,517 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 189.4) internal successors, (947), 5 states have internal predecessors, (947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:26:42,519 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 390.0) internal successors, (2340), 6 states have internal predecessors, (2340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:26:42,519 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 390.0) internal successors, (2340), 6 states have internal predecessors, (2340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:26:42,520 INFO L175 Difference]: Start difference. First operand has 89 places, 102 transitions, 366 flow. Second operand 5 states and 947 transitions. [2023-08-03 19:26:42,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 118 transitions, 582 flow [2023-08-03 19:26:42,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 118 transitions, 566 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-03 19:26:42,592 INFO L231 Difference]: Finished difference. Result has 89 places, 102 transitions, 365 flow [2023-08-03 19:26:42,592 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=344, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=365, PETRI_PLACES=89, PETRI_TRANSITIONS=102} [2023-08-03 19:26:42,593 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, 10 predicate places. [2023-08-03 19:26:42,593 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 102 transitions, 365 flow [2023-08-03 19:26:42,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 174.6) internal successors, (873), 5 states have internal predecessors, (873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:26:42,593 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:26:42,593 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:26:42,597 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-03 19:26:42,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:26:42,797 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-03 19:26:42,797 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:26:42,797 INFO L85 PathProgramCache]: Analyzing trace with hash -374346576, now seen corresponding path program 1 times [2023-08-03 19:26:42,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:26:42,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899519617] [2023-08-03 19:26:42,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:26:42,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:26:42,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:26:42,842 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-03 19:26:42,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:26:42,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899519617] [2023-08-03 19:26:42,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899519617] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:26:42,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [619055664] [2023-08-03 19:26:42,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:26:42,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:26:42,843 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:26:42,844 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:26:42,873 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-03 19:26:42,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:26:42,940 INFO L262 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 19:26:42,941 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:26:42,947 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-08-03 19:26:42,947 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:26:42,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [619055664] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:26:42,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 19:26:42,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-08-03 19:26:42,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980957042] [2023-08-03 19:26:42,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:26:42,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 19:26:42,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:26:42,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 19:26:42,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:26:42,957 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 390 [2023-08-03 19:26:42,958 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 102 transitions, 365 flow. Second operand has 3 states, 3 states have (on average 178.66666666666666) internal successors, (536), 3 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:26:42,958 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:26:42,958 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 390 [2023-08-03 19:26:42,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:27:11,655 INFO L124 PetriNetUnfolderBase]: 295038/407677 cut-off events. [2023-08-03 19:27:11,655 INFO L125 PetriNetUnfolderBase]: For 46166/46166 co-relation queries the response was YES. [2023-08-03 19:27:14,474 INFO L83 FinitePrefix]: Finished finitePrefix Result has 834604 conditions, 407677 events. 295038/407677 cut-off events. For 46166/46166 co-relation queries the response was YES. Maximal size of possible extension queue 7377. Compared 2929509 event pairs, 208050 based on Foata normal form. 0/380741 useless extension candidates. Maximal degree in co-relation 524542. Up to 379741 conditions per place. [2023-08-03 19:27:16,106 INFO L140 encePairwiseOnDemand]: 387/390 looper letters, 83 selfloop transitions, 3 changer transitions 0/111 dead transitions. [2023-08-03 19:27:16,106 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 111 transitions, 555 flow [2023-08-03 19:27:16,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 19:27:16,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 19:27:16,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 599 transitions. [2023-08-03 19:27:16,108 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5119658119658119 [2023-08-03 19:27:16,108 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 599 transitions. [2023-08-03 19:27:16,108 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 599 transitions. [2023-08-03 19:27:16,109 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:27:16,109 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 599 transitions. [2023-08-03 19:27:16,110 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 199.66666666666666) internal successors, (599), 3 states have internal predecessors, (599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:27:16,111 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 390.0) internal successors, (1560), 4 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:27:16,112 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 390.0) internal successors, (1560), 4 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:27:16,112 INFO L175 Difference]: Start difference. First operand has 89 places, 102 transitions, 365 flow. Second operand 3 states and 599 transitions. [2023-08-03 19:27:16,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 111 transitions, 555 flow [2023-08-03 19:27:16,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 111 transitions, 548 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-03 19:27:16,153 INFO L231 Difference]: Finished difference. Result has 90 places, 103 transitions, 373 flow [2023-08-03 19:27:16,153 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=358, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=373, PETRI_PLACES=90, PETRI_TRANSITIONS=103} [2023-08-03 19:27:16,154 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, 11 predicate places. [2023-08-03 19:27:16,154 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 103 transitions, 373 flow [2023-08-03 19:27:16,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 178.66666666666666) internal successors, (536), 3 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:27:16,154 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:27:16,154 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:27:16,158 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-08-03 19:27:16,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-08-03 19:27:16,355 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-03 19:27:16,355 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:27:16,356 INFO L85 PathProgramCache]: Analyzing trace with hash -2144787443, now seen corresponding path program 1 times [2023-08-03 19:27:16,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:27:16,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362112912] [2023-08-03 19:27:16,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:27:16,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:27:16,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:27:16,421 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-08-03 19:27:16,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:27:16,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362112912] [2023-08-03 19:27:16,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362112912] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:27:16,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [514185085] [2023-08-03 19:27:16,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:27:16,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:27:16,422 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:27:16,423 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:27:16,426 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-03 19:27:16,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:27:16,519 INFO L262 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 19:27:16,520 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:27:16,528 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-08-03 19:27:16,528 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:27:16,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [514185085] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:27:16,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 19:27:16,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-08-03 19:27:16,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429217832] [2023-08-03 19:27:16,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:27:16,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 19:27:16,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:27:16,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 19:27:16,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:27:16,538 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 390 [2023-08-03 19:27:16,539 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 103 transitions, 373 flow. Second operand has 3 states, 3 states have (on average 179.66666666666666) internal successors, (539), 3 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:27:16,539 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:27:16,539 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 390 [2023-08-03 19:27:16,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:27:43,972 INFO L124 PetriNetUnfolderBase]: 279966/387357 cut-off events. [2023-08-03 19:27:43,972 INFO L125 PetriNetUnfolderBase]: For 45078/45078 co-relation queries the response was YES. [2023-08-03 19:27:47,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 796125 conditions, 387357 events. 279966/387357 cut-off events. For 45078/45078 co-relation queries the response was YES. Maximal size of possible extension queue 8742. Compared 2779919 event pairs, 210016 based on Foata normal form. 0/362021 useless extension candidates. Maximal degree in co-relation 505238. Up to 348893 conditions per place. [2023-08-03 19:27:49,761 INFO L140 encePairwiseOnDemand]: 387/390 looper letters, 94 selfloop transitions, 2 changer transitions 0/121 dead transitions. [2023-08-03 19:27:49,761 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 121 transitions, 619 flow [2023-08-03 19:27:49,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 19:27:49,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 19:27:49,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 608 transitions. [2023-08-03 19:27:49,763 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5196581196581197 [2023-08-03 19:27:49,763 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 608 transitions. [2023-08-03 19:27:49,763 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 608 transitions. [2023-08-03 19:27:49,764 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:27:49,764 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 608 transitions. [2023-08-03 19:27:49,765 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 202.66666666666666) internal successors, (608), 3 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:27:49,766 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 390.0) internal successors, (1560), 4 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:27:49,766 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 390.0) internal successors, (1560), 4 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:27:49,767 INFO L175 Difference]: Start difference. First operand has 90 places, 103 transitions, 373 flow. Second operand 3 states and 608 transitions. [2023-08-03 19:27:49,767 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 121 transitions, 619 flow [2023-08-03 19:27:49,866 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 121 transitions, 616 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 19:27:49,867 INFO L231 Difference]: Finished difference. Result has 92 places, 104 transitions, 382 flow [2023-08-03 19:27:49,868 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=370, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=382, PETRI_PLACES=92, PETRI_TRANSITIONS=104} [2023-08-03 19:27:49,868 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, 13 predicate places. [2023-08-03 19:27:49,868 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 104 transitions, 382 flow [2023-08-03 19:27:49,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 179.66666666666666) internal successors, (539), 3 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:27:49,869 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:27:49,869 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:27:49,873 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-03 19:27:50,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:27:50,073 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-03 19:27:50,073 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:27:50,073 INFO L85 PathProgramCache]: Analyzing trace with hash -641028711, now seen corresponding path program 1 times [2023-08-03 19:27:50,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:27:50,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709125503] [2023-08-03 19:27:50,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:27:50,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:27:50,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:27:50,176 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-08-03 19:27:50,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:27:50,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709125503] [2023-08-03 19:27:50,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709125503] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:27:50,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [283089274] [2023-08-03 19:27:50,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:27:50,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:27:50,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:27:50,190 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:27:50,257 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-03 19:27:50,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:27:50,353 INFO L262 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 19:27:50,356 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:27:50,371 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-08-03 19:27:50,371 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:27:50,400 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-08-03 19:27:50,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [283089274] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:27:50,400 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:27:50,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-03 19:27:50,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817548812] [2023-08-03 19:27:50,401 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:27:50,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:27:50,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:27:50,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:27:50,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:27:50,412 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 390 [2023-08-03 19:27:50,413 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 104 transitions, 382 flow. Second operand has 5 states, 5 states have (on average 175.6) internal successors, (878), 5 states have internal predecessors, (878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:27:50,413 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:27:50,413 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 390 [2023-08-03 19:27:50,414 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:28:19,556 INFO L124 PetriNetUnfolderBase]: 274334/379293 cut-off events. [2023-08-03 19:28:19,556 INFO L125 PetriNetUnfolderBase]: For 52199/52199 co-relation queries the response was YES. [2023-08-03 19:28:23,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 794336 conditions, 379293 events. 274334/379293 cut-off events. For 52199/52199 co-relation queries the response was YES. Maximal size of possible extension queue 8161. Compared 2710319 event pairs, 168814 based on Foata normal form. 32/360390 useless extension candidates. Maximal degree in co-relation 506850. Up to 355165 conditions per place. [2023-08-03 19:28:25,086 INFO L140 encePairwiseOnDemand]: 387/390 looper letters, 87 selfloop transitions, 3 changer transitions 0/115 dead transitions. [2023-08-03 19:28:25,087 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 115 transitions, 580 flow [2023-08-03 19:28:25,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 19:28:25,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 19:28:25,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 771 transitions. [2023-08-03 19:28:25,108 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49423076923076925 [2023-08-03 19:28:25,109 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 771 transitions. [2023-08-03 19:28:25,109 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 771 transitions. [2023-08-03 19:28:25,109 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:28:25,109 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 771 transitions. [2023-08-03 19:28:25,110 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 192.75) internal successors, (771), 4 states have internal predecessors, (771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:28:25,112 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 390.0) internal successors, (1950), 5 states have internal predecessors, (1950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:28:25,113 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 390.0) internal successors, (1950), 5 states have internal predecessors, (1950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:28:25,113 INFO L175 Difference]: Start difference. First operand has 92 places, 104 transitions, 382 flow. Second operand 4 states and 771 transitions. [2023-08-03 19:28:25,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 115 transitions, 580 flow [2023-08-03 19:28:25,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 115 transitions, 578 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 19:28:25,389 INFO L231 Difference]: Finished difference. Result has 94 places, 103 transitions, 378 flow [2023-08-03 19:28:25,389 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=372, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=378, PETRI_PLACES=94, PETRI_TRANSITIONS=103} [2023-08-03 19:28:25,390 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, 15 predicate places. [2023-08-03 19:28:25,390 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 103 transitions, 378 flow [2023-08-03 19:28:25,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 175.6) internal successors, (878), 5 states have internal predecessors, (878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:28:25,391 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:28:25,392 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:28:25,397 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-03 19:28:25,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-08-03 19:28:25,601 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-03 19:28:25,601 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:28:25,601 INFO L85 PathProgramCache]: Analyzing trace with hash 389419378, now seen corresponding path program 1 times [2023-08-03 19:28:25,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:28:25,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949214161] [2023-08-03 19:28:25,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:28:25,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:28:25,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:28:25,730 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-08-03 19:28:25,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:28:25,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949214161] [2023-08-03 19:28:25,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949214161] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:28:25,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1231185961] [2023-08-03 19:28:25,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:28:25,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:28:25,731 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:28:25,732 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:28:25,734 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-03 19:28:25,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:28:25,851 INFO L262 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 19:28:25,853 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:28:25,871 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-08-03 19:28:25,872 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:28:25,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1231185961] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:28:25,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 19:28:25,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2023-08-03 19:28:25,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553852114] [2023-08-03 19:28:25,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:28:25,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:28:25,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:28:25,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:28:25,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 19:28:25,886 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 390 [2023-08-03 19:28:25,887 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 103 transitions, 378 flow. Second operand has 5 states, 5 states have (on average 175.6) internal successors, (878), 5 states have internal predecessors, (878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:28:25,887 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:28:25,887 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 390 [2023-08-03 19:28:25,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:28:53,131 INFO L124 PetriNetUnfolderBase]: 273310/377885 cut-off events. [2023-08-03 19:28:53,131 INFO L125 PetriNetUnfolderBase]: For 50391/50391 co-relation queries the response was YES. [2023-08-03 19:28:55,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 790032 conditions, 377885 events. 273310/377885 cut-off events. For 50391/50391 co-relation queries the response was YES. Maximal size of possible extension queue 8161. Compared 2700783 event pairs, 10324 based on Foata normal form. 256/359206 useless extension candidates. Maximal degree in co-relation 504730. Up to 350116 conditions per place. [2023-08-03 19:28:57,093 INFO L140 encePairwiseOnDemand]: 386/390 looper letters, 97 selfloop transitions, 4 changer transitions 0/125 dead transitions. [2023-08-03 19:28:57,094 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 125 transitions, 624 flow [2023-08-03 19:28:57,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 19:28:57,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 19:28:57,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 953 transitions. [2023-08-03 19:28:57,096 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4887179487179487 [2023-08-03 19:28:57,096 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 953 transitions. [2023-08-03 19:28:57,096 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 953 transitions. [2023-08-03 19:28:57,097 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:28:57,097 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 953 transitions. [2023-08-03 19:28:57,098 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 190.6) internal successors, (953), 5 states have internal predecessors, (953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:28:57,100 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 390.0) internal successors, (2340), 6 states have internal predecessors, (2340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:28:57,101 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 390.0) internal successors, (2340), 6 states have internal predecessors, (2340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:28:57,101 INFO L175 Difference]: Start difference. First operand has 94 places, 103 transitions, 378 flow. Second operand 5 states and 953 transitions. [2023-08-03 19:28:57,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 125 transitions, 624 flow [2023-08-03 19:28:57,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 125 transitions, 608 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-03 19:28:57,186 INFO L231 Difference]: Finished difference. Result has 94 places, 103 transitions, 379 flow [2023-08-03 19:28:57,186 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=356, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=379, PETRI_PLACES=94, PETRI_TRANSITIONS=103} [2023-08-03 19:28:57,186 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, 15 predicate places. [2023-08-03 19:28:57,187 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 103 transitions, 379 flow [2023-08-03 19:28:57,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 175.6) internal successors, (878), 5 states have internal predecessors, (878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:28:57,187 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:28:57,187 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:28:57,192 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-08-03 19:28:57,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-08-03 19:28:57,388 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-03 19:28:57,388 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:28:57,388 INFO L85 PathProgramCache]: Analyzing trace with hash 146990335, now seen corresponding path program 1 times [2023-08-03 19:28:57,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:28:57,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375241627] [2023-08-03 19:28:57,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:28:57,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:28:57,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:28:57,446 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-08-03 19:28:57,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:28:57,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375241627] [2023-08-03 19:28:57,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375241627] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:28:57,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [385693105] [2023-08-03 19:28:57,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:28:57,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:28:57,447 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:28:57,448 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:28:57,450 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-08-03 19:28:57,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:28:57,554 INFO L262 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 19:28:57,555 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:28:57,564 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-08-03 19:28:57,564 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:28:57,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [385693105] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:28:57,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 19:28:57,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-08-03 19:28:57,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799415352] [2023-08-03 19:28:57,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:28:57,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 19:28:57,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:28:57,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 19:28:57,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:28:57,574 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 390 [2023-08-03 19:28:57,574 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 103 transitions, 379 flow. Second operand has 3 states, 3 states have (on average 181.33333333333334) internal successors, (544), 3 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:28:57,574 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:28:57,574 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 390 [2023-08-03 19:28:57,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:29:26,920 INFO L124 PetriNetUnfolderBase]: 278365/388192 cut-off events. [2023-08-03 19:29:26,920 INFO L125 PetriNetUnfolderBase]: For 48135/48135 co-relation queries the response was YES. [2023-08-03 19:29:29,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 806406 conditions, 388192 events. 278365/388192 cut-off events. For 48135/48135 co-relation queries the response was YES. Maximal size of possible extension queue 9159. Compared 2847307 event pairs, 180364 based on Foata normal form. 0/372329 useless extension candidates. Maximal degree in co-relation 526703. Up to 290013 conditions per place. [2023-08-03 19:29:31,034 INFO L140 encePairwiseOnDemand]: 387/390 looper letters, 95 selfloop transitions, 2 changer transitions 0/121 dead transitions. [2023-08-03 19:29:31,035 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 121 transitions, 625 flow [2023-08-03 19:29:31,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 19:29:31,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 19:29:31,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 608 transitions. [2023-08-03 19:29:31,036 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5196581196581197 [2023-08-03 19:29:31,036 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 608 transitions. [2023-08-03 19:29:31,036 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 608 transitions. [2023-08-03 19:29:31,037 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:29:31,037 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 608 transitions. [2023-08-03 19:29:31,038 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 202.66666666666666) internal successors, (608), 3 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:29:31,039 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 390.0) internal successors, (1560), 4 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:29:31,039 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 390.0) internal successors, (1560), 4 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:29:31,039 INFO L175 Difference]: Start difference. First operand has 94 places, 103 transitions, 379 flow. Second operand 3 states and 608 transitions. [2023-08-03 19:29:31,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 121 transitions, 625 flow [2023-08-03 19:29:31,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 121 transitions, 618 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-03 19:29:31,093 INFO L231 Difference]: Finished difference. Result has 95 places, 104 transitions, 384 flow [2023-08-03 19:29:31,093 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=372, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=384, PETRI_PLACES=95, PETRI_TRANSITIONS=104} [2023-08-03 19:29:31,093 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, 16 predicate places. [2023-08-03 19:29:31,093 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 104 transitions, 384 flow [2023-08-03 19:29:31,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 181.33333333333334) internal successors, (544), 3 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:29:31,094 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:29:31,094 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:29:31,098 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-08-03 19:29:31,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-08-03 19:29:31,295 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-03 19:29:31,295 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:29:31,295 INFO L85 PathProgramCache]: Analyzing trace with hash -129428626, now seen corresponding path program 1 times [2023-08-03 19:29:31,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:29:31,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113716075] [2023-08-03 19:29:31,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:29:31,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:29:31,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:29:31,411 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-08-03 19:29:31,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:29:31,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113716075] [2023-08-03 19:29:31,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113716075] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:29:31,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [157088024] [2023-08-03 19:29:31,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:29:31,412 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:29:31,412 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:29:31,417 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:29:31,421 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-08-03 19:29:31,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:29:31,528 INFO L262 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 19:29:31,529 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:29:31,535 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-08-03 19:29:31,536 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:29:31,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [157088024] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:29:31,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 19:29:31,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-08-03 19:29:31,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285272925] [2023-08-03 19:29:31,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:29:31,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 19:29:31,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:29:31,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 19:29:31,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:29:31,545 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 390 [2023-08-03 19:29:31,545 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 104 transitions, 384 flow. Second operand has 3 states, 3 states have (on average 182.66666666666666) internal successors, (548), 3 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:29:31,545 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:29:31,545 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 390 [2023-08-03 19:29:31,546 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:30:02,563 INFO L124 PetriNetUnfolderBase]: 274460/385699 cut-off events. [2023-08-03 19:30:02,563 INFO L125 PetriNetUnfolderBase]: For 62806/62806 co-relation queries the response was YES. [2023-08-03 19:30:06,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 827773 conditions, 385699 events. 274460/385699 cut-off events. For 62806/62806 co-relation queries the response was YES. Maximal size of possible extension queue 7453. Compared 2869211 event pairs, 193845 based on Foata normal form. 0/378701 useless extension candidates. Maximal degree in co-relation 548690. Up to 305791 conditions per place. [2023-08-03 19:30:08,177 INFO L140 encePairwiseOnDemand]: 387/390 looper letters, 96 selfloop transitions, 2 changer transitions 0/122 dead transitions. [2023-08-03 19:30:08,178 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 122 transitions, 632 flow [2023-08-03 19:30:08,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 19:30:08,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 19:30:08,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 608 transitions. [2023-08-03 19:30:08,179 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5196581196581197 [2023-08-03 19:30:08,179 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 608 transitions. [2023-08-03 19:30:08,179 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 608 transitions. [2023-08-03 19:30:08,180 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:30:08,180 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 608 transitions. [2023-08-03 19:30:08,181 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 202.66666666666666) internal successors, (608), 3 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:30:08,197 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 390.0) internal successors, (1560), 4 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:30:08,209 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 390.0) internal successors, (1560), 4 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:30:08,209 INFO L175 Difference]: Start difference. First operand has 95 places, 104 transitions, 384 flow. Second operand 3 states and 608 transitions. [2023-08-03 19:30:08,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 122 transitions, 632 flow [2023-08-03 19:30:23,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 122 transitions, 630 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 19:30:23,628 INFO L231 Difference]: Finished difference. Result has 97 places, 105 transitions, 394 flow [2023-08-03 19:30:23,628 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=382, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=394, PETRI_PLACES=97, PETRI_TRANSITIONS=105} [2023-08-03 19:30:23,628 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, 18 predicate places. [2023-08-03 19:30:23,628 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 105 transitions, 394 flow [2023-08-03 19:30:23,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 182.66666666666666) internal successors, (548), 3 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:30:23,629 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:30:23,629 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:30:23,634 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-08-03 19:30:23,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-08-03 19:30:23,830 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-03 19:30:23,830 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:30:23,830 INFO L85 PathProgramCache]: Analyzing trace with hash -1733356473, now seen corresponding path program 1 times [2023-08-03 19:30:23,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:30:23,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366613897] [2023-08-03 19:30:23,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:30:23,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:30:23,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:30:23,915 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-08-03 19:30:23,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:30:23,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366613897] [2023-08-03 19:30:23,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366613897] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:30:23,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [329173584] [2023-08-03 19:30:23,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:30:23,916 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:30:23,916 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:30:23,917 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:30:23,925 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-08-03 19:30:24,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:30:24,033 INFO L262 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 19:30:24,038 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:30:24,044 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-08-03 19:30:24,044 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:30:24,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [329173584] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:30:24,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 19:30:24,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-08-03 19:30:24,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704049114] [2023-08-03 19:30:24,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:30:24,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 19:30:24,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:30:24,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 19:30:24,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:30:24,053 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 390 [2023-08-03 19:30:24,054 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 105 transitions, 394 flow. Second operand has 3 states, 3 states have (on average 184.0) internal successors, (552), 3 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:30:24,054 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:30:24,054 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 390 [2023-08-03 19:30:24,054 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:30:57,910 INFO L124 PetriNetUnfolderBase]: 278171/392166 cut-off events. [2023-08-03 19:30:57,911 INFO L125 PetriNetUnfolderBase]: For 68484/68484 co-relation queries the response was YES. [2023-08-03 19:31:01,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 853811 conditions, 392166 events. 278171/392166 cut-off events. For 68484/68484 co-relation queries the response was YES. Maximal size of possible extension queue 7213. Compared 2932429 event pairs, 213150 based on Foata normal form. 0/390449 useless extension candidates. Maximal degree in co-relation 569775. Up to 335873 conditions per place. [2023-08-03 19:31:03,220 INFO L140 encePairwiseOnDemand]: 387/390 looper letters, 97 selfloop transitions, 2 changer transitions 0/123 dead transitions. [2023-08-03 19:31:03,220 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 123 transitions, 644 flow [2023-08-03 19:31:03,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 19:31:03,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 19:31:03,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 608 transitions. [2023-08-03 19:31:03,221 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5196581196581197 [2023-08-03 19:31:03,221 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 608 transitions. [2023-08-03 19:31:03,221 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 608 transitions. [2023-08-03 19:31:03,222 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:31:03,222 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 608 transitions. [2023-08-03 19:31:03,222 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 202.66666666666666) internal successors, (608), 3 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:31:03,223 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 390.0) internal successors, (1560), 4 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:31:03,224 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 390.0) internal successors, (1560), 4 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:31:03,224 INFO L175 Difference]: Start difference. First operand has 97 places, 105 transitions, 394 flow. Second operand 3 states and 608 transitions. [2023-08-03 19:31:03,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 123 transitions, 644 flow [2023-08-03 19:31:32,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 123 transitions, 642 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 19:31:32,851 INFO L231 Difference]: Finished difference. Result has 99 places, 106 transitions, 404 flow [2023-08-03 19:31:32,851 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=392, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=404, PETRI_PLACES=99, PETRI_TRANSITIONS=106} [2023-08-03 19:31:32,852 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, 20 predicate places. [2023-08-03 19:31:32,852 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 106 transitions, 404 flow [2023-08-03 19:31:32,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 184.0) internal successors, (552), 3 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:31:32,852 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:31:32,852 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:31:32,857 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-08-03 19:31:33,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:31:33,053 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-03 19:31:33,053 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:31:33,053 INFO L85 PathProgramCache]: Analyzing trace with hash 1270661767, now seen corresponding path program 1 times [2023-08-03 19:31:33,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:31:33,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481313884] [2023-08-03 19:31:33,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:31:33,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:31:33,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:31:33,117 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-08-03 19:31:33,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:31:33,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481313884] [2023-08-03 19:31:33,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481313884] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:31:33,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [880197732] [2023-08-03 19:31:33,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:31:33,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:31:33,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:31:33,119 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:31:33,126 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-08-03 19:31:33,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:31:33,244 INFO L262 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 19:31:33,245 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:31:33,286 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-08-03 19:31:33,286 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:31:33,304 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-08-03 19:31:33,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [880197732] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:31:33,304 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:31:33,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-03 19:31:33,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672020231] [2023-08-03 19:31:33,305 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:31:33,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:31:33,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:31:33,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:31:33,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:31:33,321 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 390 [2023-08-03 19:31:33,322 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 106 transitions, 404 flow. Second operand has 5 states, 5 states have (on average 179.8) internal successors, (899), 5 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:31:33,322 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:31:33,322 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 390 [2023-08-03 19:31:33,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:32:08,689 INFO L124 PetriNetUnfolderBase]: 275483/388326 cut-off events. [2023-08-03 19:32:08,690 INFO L125 PetriNetUnfolderBase]: For 67174/67174 co-relation queries the response was YES. [2023-08-03 19:32:12,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 851160 conditions, 388326 events. 275483/388326 cut-off events. For 67174/67174 co-relation queries the response was YES. Maximal size of possible extension queue 7394. Compared 2894887 event pairs, 175870 based on Foata normal form. 128/388434 useless extension candidates. Maximal degree in co-relation 728677. Up to 361699 conditions per place. [2023-08-03 19:32:13,652 INFO L140 encePairwiseOnDemand]: 387/390 looper letters, 94 selfloop transitions, 3 changer transitions 0/121 dead transitions. [2023-08-03 19:32:13,653 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 121 transitions, 624 flow [2023-08-03 19:32:13,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 19:32:13,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 19:32:13,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 775 transitions. [2023-08-03 19:32:13,655 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4967948717948718 [2023-08-03 19:32:13,655 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 775 transitions. [2023-08-03 19:32:13,655 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 775 transitions. [2023-08-03 19:32:13,655 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:32:13,655 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 775 transitions. [2023-08-03 19:32:13,656 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 193.75) internal successors, (775), 4 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:32:13,658 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 390.0) internal successors, (1950), 5 states have internal predecessors, (1950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:32:13,658 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 390.0) internal successors, (1950), 5 states have internal predecessors, (1950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:32:13,658 INFO L175 Difference]: Start difference. First operand has 99 places, 106 transitions, 404 flow. Second operand 4 states and 775 transitions. [2023-08-03 19:32:13,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 121 transitions, 624 flow [2023-08-03 19:32:43,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 121 transitions, 622 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 19:32:43,587 INFO L231 Difference]: Finished difference. Result has 101 places, 105 transitions, 400 flow [2023-08-03 19:32:43,587 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=394, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=400, PETRI_PLACES=101, PETRI_TRANSITIONS=105} [2023-08-03 19:32:43,588 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, 22 predicate places. [2023-08-03 19:32:43,588 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 105 transitions, 400 flow [2023-08-03 19:32:43,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 179.8) internal successors, (899), 5 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:32:43,588 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:32:43,588 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:32:43,592 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-08-03 19:32:43,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-08-03 19:32:43,789 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-03 19:32:43,789 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:32:43,789 INFO L85 PathProgramCache]: Analyzing trace with hash 474458051, now seen corresponding path program 1 times [2023-08-03 19:32:43,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:32:43,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935221084] [2023-08-03 19:32:43,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:32:43,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:32:43,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:32:43,863 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-08-03 19:32:43,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:32:43,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935221084] [2023-08-03 19:32:43,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935221084] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:32:43,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1902331662] [2023-08-03 19:32:43,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:32:43,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:32:43,864 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:32:43,865 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:32:43,868 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-08-03 19:32:43,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:32:43,994 INFO L262 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 19:32:43,996 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:32:44,007 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-08-03 19:32:44,007 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:32:44,020 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-08-03 19:32:44,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1902331662] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:32:44,020 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:32:44,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-03 19:32:44,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101314897] [2023-08-03 19:32:44,021 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:32:44,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:32:44,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:32:44,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:32:44,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:32:44,035 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 390 [2023-08-03 19:32:44,036 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 105 transitions, 400 flow. Second operand has 5 states, 5 states have (on average 180.0) internal successors, (900), 5 states have internal predecessors, (900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:32:44,036 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:32:44,036 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 390 [2023-08-03 19:32:44,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2023-08-03 19:32:46,174 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-03 19:32:46,175 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-03 19:32:46,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 19:32:46,475 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2023-08-03 19:32:46,479 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-08-03 19:32:46,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-08-03 19:32:46,677 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (5states, 171/390 universal loopers) in iteration 17,while PetriNetUnfolder was constructing finite prefix that currently has 73969 conditions, 34892 events (25832/34891 cut-off events. For 8341/8341 co-relation queries the response was YES. Maximal size of possible extension queue 2004. Compared 190389 event pairs, 5966 based on Foata normal form. 1024/37905 useless extension candidates. Maximal degree in co-relation 73946. Up to 17465 conditions per place.). [2023-08-03 19:32:46,677 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 5 remaining) [2023-08-03 19:32:46,677 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2023-08-03 19:32:46,677 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2023-08-03 19:32:46,677 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2023-08-03 19:32:46,677 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:32:46,679 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-03 19:32:46,679 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-03 19:32:46,682 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.08 07:32:46 BasicIcfg [2023-08-03 19:32:46,682 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-03 19:32:46,683 INFO L158 Benchmark]: Toolchain (without parser) took 630541.06ms. Allocated memory was 346.0MB in the beginning and 16.0GB in the end (delta: 15.7GB). Free memory was 294.1MB in the beginning and 10.4GB in the end (delta: -10.1GB). Peak memory consumption was 6.2GB. Max. memory is 16.0GB. [2023-08-03 19:32:46,683 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 346.0MB. Free memory was 297.8MB in the beginning and 297.6MB in the end (delta: 160.9kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-03 19:32:46,683 INFO L158 Benchmark]: CACSL2BoogieTranslator took 247.67ms. Allocated memory is still 346.0MB. Free memory was 294.1MB in the beginning and 282.3MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-08-03 19:32:46,683 INFO L158 Benchmark]: Boogie Procedure Inliner took 48.40ms. Allocated memory is still 346.0MB. Free memory was 282.3MB in the beginning and 280.5MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 19:32:46,683 INFO L158 Benchmark]: Boogie Preprocessor took 31.35ms. Allocated memory is still 346.0MB. Free memory was 280.5MB in the beginning and 278.8MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 19:32:46,684 INFO L158 Benchmark]: RCFGBuilder took 350.74ms. Allocated memory is still 346.0MB. Free memory was 278.8MB in the beginning and 261.3MB in the end (delta: 17.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. [2023-08-03 19:32:46,684 INFO L158 Benchmark]: TraceAbstraction took 629857.70ms. Allocated memory was 346.0MB in the beginning and 16.0GB in the end (delta: 15.7GB). Free memory was 260.6MB in the beginning and 10.4GB in the end (delta: -10.2GB). Peak memory consumption was 6.1GB. Max. memory is 16.0GB. [2023-08-03 19:32:46,685 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 346.0MB. Free memory was 297.8MB in the beginning and 297.6MB in the end (delta: 160.9kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 247.67ms. Allocated memory is still 346.0MB. Free memory was 294.1MB in the beginning and 282.3MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 48.40ms. Allocated memory is still 346.0MB. Free memory was 282.3MB in the beginning and 280.5MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 31.35ms. Allocated memory is still 346.0MB. Free memory was 280.5MB in the beginning and 278.8MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 350.74ms. Allocated memory is still 346.0MB. Free memory was 278.8MB in the beginning and 261.3MB in the end (delta: 17.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. * TraceAbstraction took 629857.70ms. Allocated memory was 346.0MB in the beginning and 16.0GB in the end (delta: 15.7GB). Free memory was 260.6MB in the beginning and 10.4GB in the end (delta: -10.2GB). Peak memory consumption was 6.1GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.8s, 166 PlacesBefore, 51 PlacesAfterwards, 191 TransitionsBefore, 62 TransitionsAfterwards, 5280 CoEnabledTransitionPairs, 6 FixpointIterations, 39 TrivialSequentialCompositions, 67 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 26 ConcurrentYvCompositions, 14 ChoiceCompositions, 147 TotalNumberOfCompositions, 12402 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 12374, independent: 12370, independent conditional: 0, independent unconditional: 12370, dependent: 4, dependent conditional: 0, dependent unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 2838, independent: 2836, independent conditional: 0, independent unconditional: 2836, dependent: 2, dependent conditional: 0, dependent unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 12374, independent: 9534, independent conditional: 0, independent unconditional: 9534, dependent: 2, dependent conditional: 0, dependent unconditional: 2, unknown: 2838, unknown conditional: 0, unknown unconditional: 2838] , Statistics on independence cache: Total cache size (in pairs): 254, Positive cache size: 254, Positive conditional cache size: 0, Positive unconditional cache size: 254, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.4s, 194 PlacesBefore, 79 PlacesAfterwards, 235 TransitionsBefore, 102 TransitionsAfterwards, 13440 CoEnabledTransitionPairs, 7 FixpointIterations, 39 TrivialSequentialCompositions, 63 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 34 ConcurrentYvCompositions, 18 ChoiceCompositions, 155 TotalNumberOfCompositions, 65126 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 43490, independent: 43150, independent conditional: 0, independent unconditional: 43150, dependent: 340, dependent conditional: 0, dependent unconditional: 340, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 7448, independent: 7414, independent conditional: 0, independent unconditional: 7414, dependent: 34, dependent conditional: 0, dependent unconditional: 34, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 43490, independent: 35736, independent conditional: 0, independent unconditional: 35736, dependent: 306, dependent conditional: 0, dependent unconditional: 306, unknown: 7448, unknown conditional: 0, unknown unconditional: 7448] , Statistics on independence cache: Total cache size (in pairs): 1455, Positive cache size: 1439, Positive conditional cache size: 0, Positive unconditional cache size: 1439, Negative cache size: 16, Negative conditional cache size: 0, Negative unconditional cache size: 16, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 92]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (5states, 171/390 universal loopers) in iteration 17,while PetriNetUnfolder was constructing finite prefix that currently has 73969 conditions, 34892 events (25832/34891 cut-off events. For 8341/8341 co-relation queries the response was YES. Maximal size of possible extension queue 2004. Compared 190389 event pairs, 5966 based on Foata normal form. 1024/37905 useless extension candidates. Maximal degree in co-relation 73946. Up to 17465 conditions per place.). - TimeoutResultAtElement [Line: 85]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (5states, 171/390 universal loopers) in iteration 17,while PetriNetUnfolder was constructing finite prefix that currently has 73969 conditions, 34892 events (25832/34891 cut-off events. For 8341/8341 co-relation queries the response was YES. Maximal size of possible extension queue 2004. Compared 190389 event pairs, 5966 based on Foata normal form. 1024/37905 useless extension candidates. Maximal degree in co-relation 73946. Up to 17465 conditions per place.). - TimeoutResultAtElement [Line: 83]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (5states, 171/390 universal loopers) in iteration 17,while PetriNetUnfolder was constructing finite prefix that currently has 73969 conditions, 34892 events (25832/34891 cut-off events. For 8341/8341 co-relation queries the response was YES. Maximal size of possible extension queue 2004. Compared 190389 event pairs, 5966 based on Foata normal form. 1024/37905 useless extension candidates. Maximal degree in co-relation 73946. Up to 17465 conditions per place.). - TimeoutResultAtElement [Line: 84]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (5states, 171/390 universal loopers) in iteration 17,while PetriNetUnfolder was constructing finite prefix that currently has 73969 conditions, 34892 events (25832/34891 cut-off events. For 8341/8341 co-relation queries the response was YES. Maximal size of possible extension queue 2004. Compared 190389 event pairs, 5966 based on Foata normal form. 1024/37905 useless extension candidates. Maximal degree in co-relation 73946. Up to 17465 conditions per place.). - TimeoutResultAtElement [Line: 82]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (5states, 171/390 universal loopers) in iteration 17,while PetriNetUnfolder was constructing finite prefix that currently has 73969 conditions, 34892 events (25832/34891 cut-off events. For 8341/8341 co-relation queries the response was YES. Maximal size of possible extension queue 2004. Compared 190389 event pairs, 5966 based on Foata normal form. 1024/37905 useless extension candidates. Maximal degree in co-relation 73946. Up to 17465 conditions per place.). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 178 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 4.3s, OverallIterations: 1, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.1s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=192occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 6 NumberOfCodeBlocks, 6 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data with 2 thread instances CFG has 13 procedures, 198 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 625.4s, OverallIterations: 17, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 610.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 8.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 887 SdHoareTripleChecker+Valid, 2.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 729 mSDsluCounter, 40 SdHoareTripleChecker+Invalid, 1.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 53 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2933 IncrementalHoareTripleChecker+Invalid, 2986 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 53 mSolverCounterUnsat, 40 mSDtfsCounter, 2933 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 767 GetRequests, 704 SyntacticMatches, 10 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=404occurred in iteration=15, InterpolantAutomatonStates: 60, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 1065 NumberOfCodeBlocks, 1065 NumberOfCodeBlocksAsserted, 33 NumberOfCheckSat, 1220 ConstructedInterpolants, 0 QuantifiedInterpolants, 1600 SizeOfPredicates, 0 NumberOfNonLiveVariables, 2983 ConjunctsInSsa, 45 ConjunctsInUnsatCore, 38 InterpolantComputations, 12 PerfectInterpolantSequences, 578/620 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown