/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.order.of.the.error.locations.to.be.checked TOGETHER -tc /storage/repos/CAV22/benchmarks/AutomizerCInline.xml -i /storage/repos/CAV22/benchmarks/increased_bounds/weaver_chl-sre-subst.wvr_bound2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 19:47:42,230 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 19:47:42,278 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 19:47:42,282 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 19:47:42,282 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 19:47:42,282 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 19:47:42,283 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 19:47:42,301 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 19:47:42,301 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 19:47:42,302 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 19:47:42,302 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 19:47:42,302 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 19:47:42,303 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 19:47:42,303 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 19:47:42,304 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 19:47:42,304 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 19:47:42,304 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 19:47:42,305 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 19:47:42,305 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 19:47:42,305 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 19:47:42,306 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 19:47:42,306 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 19:47:42,306 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 19:47:42,307 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 19:47:42,307 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 19:47:42,307 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 19:47:42,308 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 19:47:42,308 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 19:47:42,308 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 19:47:42,309 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 19:47:42,309 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 19:47:42,309 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 19:47:42,310 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 19:47:42,310 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 19:47:42,310 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 19:47:42,311 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 19:47:42,311 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 19:47:42,311 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 19:47:42,311 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 19:47:42,312 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 19:47:42,312 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 19:47:42,312 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> TOGETHER [2023-08-03 19:47:42,527 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 19:47:42,547 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 19:47:42,549 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 19:47:42,549 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 19:47:42,550 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 19:47:42,551 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/weaver_chl-sre-subst.wvr_bound2.c [2023-08-03 19:47:43,615 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 19:47:43,799 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 19:47:43,799 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/weaver_chl-sre-subst.wvr_bound2.c [2023-08-03 19:47:43,805 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/79648c27c/3a6081a0f6424ebebf53d9e0d846cc77/FLAGf4ab17cdb [2023-08-03 19:47:43,818 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/79648c27c/3a6081a0f6424ebebf53d9e0d846cc77 [2023-08-03 19:47:43,821 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 19:47:43,822 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 19:47:43,823 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 19:47:43,823 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 19:47:43,826 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 19:47:43,826 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 07:47:43" (1/1) ... [2023-08-03 19:47:43,827 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3360c173 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:47:43, skipping insertion in model container [2023-08-03 19:47:43,827 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 07:47:43" (1/1) ... [2023-08-03 19:47:43,855 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 19:47:44,058 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/weaver_chl-sre-subst.wvr_bound2.c[2576,2589] [2023-08-03 19:47:44,064 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 19:47:44,074 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 19:47:44,115 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/weaver_chl-sre-subst.wvr_bound2.c[2576,2589] [2023-08-03 19:47:44,116 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 19:47:44,130 INFO L206 MainTranslator]: Completed translation [2023-08-03 19:47:44,132 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:47:44 WrapperNode [2023-08-03 19:47:44,132 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 19:47:44,134 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 19:47:44,134 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 19:47:44,135 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 19:47:44,140 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:47:44" (1/1) ... [2023-08-03 19:47:44,155 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:47:44" (1/1) ... [2023-08-03 19:47:44,181 INFO L138 Inliner]: procedures = 22, calls = 26, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 125 [2023-08-03 19:47:44,182 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 19:47:44,183 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 19:47:44,183 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 19:47:44,183 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 19:47:44,191 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:47:44" (1/1) ... [2023-08-03 19:47:44,191 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:47:44" (1/1) ... [2023-08-03 19:47:44,205 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:47:44" (1/1) ... [2023-08-03 19:47:44,205 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:47:44" (1/1) ... [2023-08-03 19:47:44,210 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:47:44" (1/1) ... [2023-08-03 19:47:44,213 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:47:44" (1/1) ... [2023-08-03 19:47:44,214 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:47:44" (1/1) ... [2023-08-03 19:47:44,215 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:47:44" (1/1) ... [2023-08-03 19:47:44,224 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 19:47:44,225 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 19:47:44,225 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 19:47:44,226 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 19:47:44,226 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:47:44" (1/1) ... [2023-08-03 19:47:44,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 19:47:44,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:47:44,254 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 19:47:44,263 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 19:47:44,284 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 19:47:44,284 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-03 19:47:44,284 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-03 19:47:44,284 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-03 19:47:44,284 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-03 19:47:44,284 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-03 19:47:44,284 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-03 19:47:44,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 19:47:44,285 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 19:47:44,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 19:47:44,285 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 19:47:44,286 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 19:47:44,286 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-03 19:47:44,286 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 19:47:44,288 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 19:47:44,380 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 19:47:44,382 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 19:47:44,546 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 19:47:44,559 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 19:47:44,559 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-08-03 19:47:44,561 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 07:47:44 BoogieIcfgContainer [2023-08-03 19:47:44,562 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 19:47:44,564 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 19:47:44,564 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 19:47:44,566 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 19:47:44,567 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 07:47:43" (1/3) ... [2023-08-03 19:47:44,567 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f0a9ec6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 07:47:44, skipping insertion in model container [2023-08-03 19:47:44,567 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:47:44" (2/3) ... [2023-08-03 19:47:44,568 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f0a9ec6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 07:47:44, skipping insertion in model container [2023-08-03 19:47:44,568 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 07:47:44" (3/3) ... [2023-08-03 19:47:44,569 INFO L112 eAbstractionObserver]: Analyzing ICFG weaver_chl-sre-subst.wvr_bound2.c [2023-08-03 19:47:44,580 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 19:47:44,593 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 19:47:44,593 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-03 19:47:44,593 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 19:47:44,704 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-08-03 19:47:44,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 128 places, 138 transitions, 318 flow [2023-08-03 19:47:44,960 INFO L124 PetriNetUnfolderBase]: 90/620 cut-off events. [2023-08-03 19:47:44,960 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2023-08-03 19:47:44,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 681 conditions, 620 events. 90/620 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 3184 event pairs, 0 based on Foata normal form. 0/520 useless extension candidates. Maximal degree in co-relation 349. Up to 16 conditions per place. [2023-08-03 19:47:44,965 INFO L82 GeneralOperation]: Start removeDead. Operand has 128 places, 138 transitions, 318 flow [2023-08-03 19:47:44,972 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 118 places, 128 transitions, 298 flow [2023-08-03 19:47:44,975 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 19:47:44,987 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 118 places, 128 transitions, 298 flow [2023-08-03 19:47:44,990 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 118 places, 128 transitions, 298 flow [2023-08-03 19:47:44,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 118 places, 128 transitions, 298 flow [2023-08-03 19:47:45,046 INFO L124 PetriNetUnfolderBase]: 90/540 cut-off events. [2023-08-03 19:47:45,046 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2023-08-03 19:47:45,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 601 conditions, 540 events. 90/540 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 2599 event pairs, 0 based on Foata normal form. 0/448 useless extension candidates. Maximal degree in co-relation 309. Up to 16 conditions per place. [2023-08-03 19:47:45,051 INFO L119 LiptonReduction]: Number of co-enabled transitions 1368 [2023-08-03 19:47:47,626 INFO L134 LiptonReduction]: Checked pairs total: 4268 [2023-08-03 19:47:47,627 INFO L136 LiptonReduction]: Total number of compositions: 101 [2023-08-03 19:47:47,639 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 19:47:47,645 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;@43dbc7e4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 19:47:47,645 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-03 19:47:47,650 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 19:47:47,650 INFO L124 PetriNetUnfolderBase]: 0/26 cut-off events. [2023-08-03 19:47:47,650 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 19:47:47,650 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:47:47,651 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-03 19:47:47,651 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:47:47,655 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:47:47,655 INFO L85 PathProgramCache]: Analyzing trace with hash 1185099536, now seen corresponding path program 1 times [2023-08-03 19:47:47,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:47:47,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825642668] [2023-08-03 19:47:47,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:47:47,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:47:47,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 19:47:47,778 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 19:47:47,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 19:47:47,837 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 19:47:47,838 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 19:47:47,839 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2023-08-03 19:47:47,841 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2023-08-03 19:47:47,842 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-03 19:47:47,842 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-03 19:47:47,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 19:47:47,842 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-03 19:47:47,850 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 19:47:47,851 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 19:47:47,877 INFO L144 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2023-08-03 19:47:47,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 146 places, 159 transitions, 408 flow [2023-08-03 19:47:48,290 INFO L124 PetriNetUnfolderBase]: 898/4312 cut-off events. [2023-08-03 19:47:48,290 INFO L125 PetriNetUnfolderBase]: For 602/602 co-relation queries the response was YES. [2023-08-03 19:47:48,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4986 conditions, 4312 events. 898/4312 cut-off events. For 602/602 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 35295 event pairs, 11 based on Foata normal form. 0/3658 useless extension candidates. Maximal degree in co-relation 2509. Up to 192 conditions per place. [2023-08-03 19:47:48,309 INFO L82 GeneralOperation]: Start removeDead. Operand has 146 places, 159 transitions, 408 flow [2023-08-03 19:47:48,323 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 136 places, 149 transitions, 388 flow [2023-08-03 19:47:48,323 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 19:47:48,323 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 136 places, 149 transitions, 388 flow [2023-08-03 19:47:48,323 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 136 places, 149 transitions, 388 flow [2023-08-03 19:47:48,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 136 places, 149 transitions, 388 flow [2023-08-03 19:47:48,683 INFO L124 PetriNetUnfolderBase]: 898/3672 cut-off events. [2023-08-03 19:47:48,684 INFO L125 PetriNetUnfolderBase]: For 602/602 co-relation queries the response was YES. [2023-08-03 19:47:48,692 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4346 conditions, 3672 events. 898/3672 cut-off events. For 602/602 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 27667 event pairs, 11 based on Foata normal form. 0/3082 useless extension candidates. Maximal degree in co-relation 2189. Up to 192 conditions per place. [2023-08-03 19:47:48,728 INFO L119 LiptonReduction]: Number of co-enabled transitions 3276 [2023-08-03 19:47:50,807 INFO L134 LiptonReduction]: Checked pairs total: 12372 [2023-08-03 19:47:50,808 INFO L136 LiptonReduction]: Total number of compositions: 104 [2023-08-03 19:47:50,810 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 19:47:50,811 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;@43dbc7e4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 19:47:50,811 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-03 19:47:50,814 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 19:47:50,814 INFO L124 PetriNetUnfolderBase]: 0/26 cut-off events. [2023-08-03 19:47:50,814 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-03 19:47:50,814 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:47:50,814 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:47:50,814 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:47:50,815 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:47:50,815 INFO L85 PathProgramCache]: Analyzing trace with hash 2033559102, now seen corresponding path program 1 times [2023-08-03 19:47:50,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:47:50,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709383546] [2023-08-03 19:47:50,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:47:50,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:47:50,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:47:50,940 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 19:47:50,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:47:50,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709383546] [2023-08-03 19:47:50,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709383546] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:47:50,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 19:47:50,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 19:47:50,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076959055] [2023-08-03 19:47:50,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:47:50,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 19:47:50,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:47:50,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 19:47:50,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 19:47:50,992 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 263 [2023-08-03 19:47:50,997 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 60 transitions, 210 flow. Second operand has 3 states, 3 states have (on average 124.66666666666667) internal successors, (374), 3 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:47:50,997 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:47:50,997 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 263 [2023-08-03 19:47:50,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:47:53,932 INFO L124 PetriNetUnfolderBase]: 21389/32244 cut-off events. [2023-08-03 19:47:53,933 INFO L125 PetriNetUnfolderBase]: For 6766/6766 co-relation queries the response was YES. [2023-08-03 19:47:54,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67410 conditions, 32244 events. 21389/32244 cut-off events. For 6766/6766 co-relation queries the response was YES. Maximal size of possible extension queue 740. Compared 205738 event pairs, 14517 based on Foata normal form. 0/29691 useless extension candidates. Maximal degree in co-relation 27201. Up to 30193 conditions per place. [2023-08-03 19:47:54,135 INFO L140 encePairwiseOnDemand]: 259/263 looper letters, 51 selfloop transitions, 2 changer transitions 0/62 dead transitions. [2023-08-03 19:47:54,135 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 62 transitions, 320 flow [2023-08-03 19:47:54,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 19:47:54,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 19:47:54,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 421 transitions. [2023-08-03 19:47:54,153 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5335868187579215 [2023-08-03 19:47:54,154 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 421 transitions. [2023-08-03 19:47:54,155 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 421 transitions. [2023-08-03 19:47:54,159 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:47:54,161 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 421 transitions. [2023-08-03 19:47:54,165 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 140.33333333333334) internal successors, (421), 3 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:47:54,169 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 263.0) internal successors, (1052), 4 states have internal predecessors, (1052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:47:54,170 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 263.0) internal successors, (1052), 4 states have internal predecessors, (1052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:47:54,171 INFO L175 Difference]: Start difference. First operand has 54 places, 60 transitions, 210 flow. Second operand 3 states and 421 transitions. [2023-08-03 19:47:54,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 62 transitions, 320 flow [2023-08-03 19:47:54,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 62 transitions, 320 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 19:47:54,196 INFO L231 Difference]: Finished difference. Result has 57 places, 60 transitions, 220 flow [2023-08-03 19:47:54,198 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=263, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=220, PETRI_PLACES=57, PETRI_TRANSITIONS=60} [2023-08-03 19:47:54,203 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 3 predicate places. [2023-08-03 19:47:54,204 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 60 transitions, 220 flow [2023-08-03 19:47:54,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 124.66666666666667) internal successors, (374), 3 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:47:54,205 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:47:54,205 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-03 19:47:54,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-03 19:47:54,206 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:47:54,208 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:47:54,209 INFO L85 PathProgramCache]: Analyzing trace with hash 620972327, now seen corresponding path program 1 times [2023-08-03 19:47:54,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:47:54,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581011168] [2023-08-03 19:47:54,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:47:54,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:47:54,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:47:54,352 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 19:47:54,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:47:54,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581011168] [2023-08-03 19:47:54,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581011168] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:47:54,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1878560919] [2023-08-03 19:47:54,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:47:54,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:47:54,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:47:54,365 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 19:47:54,387 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 19:47:54,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:47:54,431 INFO L262 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 19:47:54,432 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:47:54,489 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 19:47:54,489 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:47:54,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1878560919] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:47:54,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 19:47:54,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-08-03 19:47:54,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586774879] [2023-08-03 19:47:54,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:47:54,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:47:54,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:47:54,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:47:54,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 19:47:54,514 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 263 [2023-08-03 19:47:54,515 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 60 transitions, 220 flow. Second operand has 5 states, 5 states have (on average 122.6) internal successors, (613), 5 states have internal predecessors, (613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:47:54,515 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:47:54,515 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 263 [2023-08-03 19:47:54,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:47:56,876 INFO L124 PetriNetUnfolderBase]: 21385/32234 cut-off events. [2023-08-03 19:47:56,876 INFO L125 PetriNetUnfolderBase]: For 6768/6768 co-relation queries the response was YES. [2023-08-03 19:47:56,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67405 conditions, 32234 events. 21385/32234 cut-off events. For 6768/6768 co-relation queries the response was YES. Maximal size of possible extension queue 740. Compared 205736 event pairs, 11616 based on Foata normal form. 4/29691 useless extension candidates. Maximal degree in co-relation 40700. Up to 30172 conditions per place. [2023-08-03 19:47:57,025 INFO L140 encePairwiseOnDemand]: 259/263 looper letters, 52 selfloop transitions, 4 changer transitions 0/64 dead transitions. [2023-08-03 19:47:57,025 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 64 transitions, 338 flow [2023-08-03 19:47:57,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 19:47:57,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 19:47:57,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 662 transitions. [2023-08-03 19:47:57,027 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5034220532319391 [2023-08-03 19:47:57,027 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 662 transitions. [2023-08-03 19:47:57,028 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 662 transitions. [2023-08-03 19:47:57,028 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:47:57,028 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 662 transitions. [2023-08-03 19:47:57,030 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 132.4) internal successors, (662), 5 states have internal predecessors, (662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:47:57,034 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 263.0) internal successors, (1578), 6 states have internal predecessors, (1578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:47:57,035 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 263.0) internal successors, (1578), 6 states have internal predecessors, (1578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:47:57,035 INFO L175 Difference]: Start difference. First operand has 57 places, 60 transitions, 220 flow. Second operand 5 states and 662 transitions. [2023-08-03 19:47:57,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 64 transitions, 338 flow [2023-08-03 19:47:57,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 64 transitions, 328 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-03 19:47:57,045 INFO L231 Difference]: Finished difference. Result has 59 places, 60 transitions, 225 flow [2023-08-03 19:47:57,045 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=263, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=225, PETRI_PLACES=59, PETRI_TRANSITIONS=60} [2023-08-03 19:47:57,046 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 5 predicate places. [2023-08-03 19:47:57,046 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 60 transitions, 225 flow [2023-08-03 19:47:57,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 122.6) internal successors, (613), 5 states have internal predecessors, (613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:47:57,047 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:47:57,047 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:47:57,056 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-03 19:47:57,253 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 19:47:57,253 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:47:57,253 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:47:57,254 INFO L85 PathProgramCache]: Analyzing trace with hash -980425416, now seen corresponding path program 1 times [2023-08-03 19:47:57,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:47:57,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874526762] [2023-08-03 19:47:57,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:47:57,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:47:57,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:47:57,345 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 19:47:57,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:47:57,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874526762] [2023-08-03 19:47:57,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874526762] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:47:57,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [939158121] [2023-08-03 19:47:57,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:47:57,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:47:57,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:47:57,358 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 19:47:57,360 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 19:47:57,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:47:57,415 INFO L262 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 19:47:57,417 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:47:57,428 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 19:47:57,428 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:47:57,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [939158121] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:47:57,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 19:47:57,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-03 19:47:57,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093817378] [2023-08-03 19:47:57,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:47:57,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 19:47:57,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:47:57,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 19:47:57,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:47:57,441 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 263 [2023-08-03 19:47:57,442 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 60 transitions, 225 flow. Second operand has 3 states, 3 states have (on average 125.66666666666667) internal successors, (377), 3 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:47:57,442 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:47:57,442 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 263 [2023-08-03 19:47:57,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:47:59,448 INFO L124 PetriNetUnfolderBase]: 21171/31792 cut-off events. [2023-08-03 19:47:59,449 INFO L125 PetriNetUnfolderBase]: For 5783/5783 co-relation queries the response was YES. [2023-08-03 19:47:59,522 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65847 conditions, 31792 events. 21171/31792 cut-off events. For 5783/5783 co-relation queries the response was YES. Maximal size of possible extension queue 774. Compared 201386 event pairs, 14440 based on Foata normal form. 0/29311 useless extension candidates. Maximal degree in co-relation 28682. Up to 29811 conditions per place. [2023-08-03 19:47:59,625 INFO L140 encePairwiseOnDemand]: 260/263 looper letters, 54 selfloop transitions, 3 changer transitions 0/65 dead transitions. [2023-08-03 19:47:59,625 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 65 transitions, 349 flow [2023-08-03 19:47:59,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 19:47:59,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 19:47:59,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 422 transitions. [2023-08-03 19:47:59,627 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5348542458808618 [2023-08-03 19:47:59,627 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 422 transitions. [2023-08-03 19:47:59,627 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 422 transitions. [2023-08-03 19:47:59,627 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:47:59,627 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 422 transitions. [2023-08-03 19:47:59,628 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 140.66666666666666) internal successors, (422), 3 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:47:59,630 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 263.0) internal successors, (1052), 4 states have internal predecessors, (1052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:47:59,630 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 263.0) internal successors, (1052), 4 states have internal predecessors, (1052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:47:59,630 INFO L175 Difference]: Start difference. First operand has 59 places, 60 transitions, 225 flow. Second operand 3 states and 422 transitions. [2023-08-03 19:47:59,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 65 transitions, 349 flow [2023-08-03 19:47:59,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 65 transitions, 342 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-03 19:47:59,636 INFO L231 Difference]: Finished difference. Result has 60 places, 61 transitions, 233 flow [2023-08-03 19:47:59,636 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=263, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=233, PETRI_PLACES=60, PETRI_TRANSITIONS=61} [2023-08-03 19:47:59,638 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 6 predicate places. [2023-08-03 19:47:59,638 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 61 transitions, 233 flow [2023-08-03 19:47:59,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 125.66666666666667) internal successors, (377), 3 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:47:59,639 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:47:59,639 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:47:59,651 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 19:47:59,848 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 19:47:59,850 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:47:59,850 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:47:59,851 INFO L85 PathProgramCache]: Analyzing trace with hash 194391785, now seen corresponding path program 1 times [2023-08-03 19:47:59,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:47:59,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066205515] [2023-08-03 19:47:59,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:47:59,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:47:59,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:47:59,917 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 19:47:59,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:47:59,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066205515] [2023-08-03 19:47:59,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066205515] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:47:59,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1151786538] [2023-08-03 19:47:59,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:47:59,918 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:47:59,918 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:47:59,920 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 19:47:59,926 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 19:48:00,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:48:00,113 INFO L262 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 19:48:00,114 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:48:00,135 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 19:48:00,135 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:48:00,156 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 19:48:00,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1151786538] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:48:00,156 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:48:00,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-03 19:48:00,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989053913] [2023-08-03 19:48:00,157 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:48:00,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:48:00,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:48:00,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:48:00,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:48:00,170 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 263 [2023-08-03 19:48:00,171 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 61 transitions, 233 flow. Second operand has 5 states, 5 states have (on average 123.6) internal successors, (618), 5 states have internal predecessors, (618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:48:00,171 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:48:00,171 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 263 [2023-08-03 19:48:00,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:48:02,164 INFO L124 PetriNetUnfolderBase]: 20579/30778 cut-off events. [2023-08-03 19:48:02,164 INFO L125 PetriNetUnfolderBase]: For 5665/5665 co-relation queries the response was YES. [2023-08-03 19:48:02,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63843 conditions, 30778 events. 20579/30778 cut-off events. For 5665/5665 co-relation queries the response was YES. Maximal size of possible extension queue 805. Compared 192386 event pairs, 11374 based on Foata normal form. 2/28421 useless extension candidates. Maximal degree in co-relation 24794. Up to 28967 conditions per place. [2023-08-03 19:48:02,351 INFO L140 encePairwiseOnDemand]: 260/263 looper letters, 53 selfloop transitions, 3 changer transitions 0/64 dead transitions. [2023-08-03 19:48:02,352 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 64 transitions, 346 flow [2023-08-03 19:48:02,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 19:48:02,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 19:48:02,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 540 transitions. [2023-08-03 19:48:02,354 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5133079847908745 [2023-08-03 19:48:02,354 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 540 transitions. [2023-08-03 19:48:02,354 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 540 transitions. [2023-08-03 19:48:02,354 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:48:02,354 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 540 transitions. [2023-08-03 19:48:02,356 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 135.0) internal successors, (540), 4 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:48:02,358 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 263.0) internal successors, (1315), 5 states have internal predecessors, (1315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:48:02,358 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 263.0) internal successors, (1315), 5 states have internal predecessors, (1315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:48:02,358 INFO L175 Difference]: Start difference. First operand has 60 places, 61 transitions, 233 flow. Second operand 4 states and 540 transitions. [2023-08-03 19:48:02,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 64 transitions, 346 flow [2023-08-03 19:48:02,365 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 64 transitions, 344 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 19:48:02,366 INFO L231 Difference]: Finished difference. Result has 62 places, 60 transitions, 228 flow [2023-08-03 19:48:02,366 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=263, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=228, PETRI_PLACES=62, PETRI_TRANSITIONS=60} [2023-08-03 19:48:02,368 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 8 predicate places. [2023-08-03 19:48:02,368 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 60 transitions, 228 flow [2023-08-03 19:48:02,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 123.6) internal successors, (618), 5 states have internal predecessors, (618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:48:02,369 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:48:02,369 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:48:02,377 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 19:48:02,574 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 19:48:02,574 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:48:02,574 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:48:02,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1652253310, now seen corresponding path program 1 times [2023-08-03 19:48:02,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:48:02,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255517133] [2023-08-03 19:48:02,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:48:02,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:48:02,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:48:02,639 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 19:48:02,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:48:02,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255517133] [2023-08-03 19:48:02,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255517133] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:48:02,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [372544956] [2023-08-03 19:48:02,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:48:02,640 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:48:02,640 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:48:02,642 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 19:48:02,662 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 19:48:02,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:48:02,721 INFO L262 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 19:48:02,722 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:48:02,751 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 19:48:02,751 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:48:02,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [372544956] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:48:02,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 19:48:02,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2023-08-03 19:48:02,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24682986] [2023-08-03 19:48:02,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:48:02,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:48:02,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:48:02,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:48:02,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 19:48:02,771 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 263 [2023-08-03 19:48:02,772 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 60 transitions, 228 flow. Second operand has 5 states, 5 states have (on average 123.6) internal successors, (618), 5 states have internal predecessors, (618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:48:02,772 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:48:02,772 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 263 [2023-08-03 19:48:02,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:48:04,822 INFO L124 PetriNetUnfolderBase]: 20547/30722 cut-off events. [2023-08-03 19:48:04,823 INFO L125 PetriNetUnfolderBase]: For 5645/5645 co-relation queries the response was YES. [2023-08-03 19:48:04,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63722 conditions, 30722 events. 20547/30722 cut-off events. For 5645/5645 co-relation queries the response was YES. Maximal size of possible extension queue 804. Compared 191980 event pairs, 5780 based on Foata normal form. 16/28379 useless extension candidates. Maximal degree in co-relation 38931. Up to 28798 conditions per place. [2023-08-03 19:48:05,047 INFO L140 encePairwiseOnDemand]: 259/263 looper letters, 59 selfloop transitions, 4 changer transitions 0/70 dead transitions. [2023-08-03 19:48:05,047 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 70 transitions, 372 flow [2023-08-03 19:48:05,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 19:48:05,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 19:48:05,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 668 transitions. [2023-08-03 19:48:05,050 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5079847908745247 [2023-08-03 19:48:05,050 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 668 transitions. [2023-08-03 19:48:05,050 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 668 transitions. [2023-08-03 19:48:05,050 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:48:05,050 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 668 transitions. [2023-08-03 19:48:05,052 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 133.6) internal successors, (668), 5 states have internal predecessors, (668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:48:05,054 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 263.0) internal successors, (1578), 6 states have internal predecessors, (1578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:48:05,055 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 263.0) internal successors, (1578), 6 states have internal predecessors, (1578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:48:05,055 INFO L175 Difference]: Start difference. First operand has 62 places, 60 transitions, 228 flow. Second operand 5 states and 668 transitions. [2023-08-03 19:48:05,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 70 transitions, 372 flow [2023-08-03 19:48:05,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 70 transitions, 358 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-03 19:48:05,065 INFO L231 Difference]: Finished difference. Result has 62 places, 60 transitions, 229 flow [2023-08-03 19:48:05,065 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=263, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=229, PETRI_PLACES=62, PETRI_TRANSITIONS=60} [2023-08-03 19:48:05,068 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 8 predicate places. [2023-08-03 19:48:05,069 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 60 transitions, 229 flow [2023-08-03 19:48:05,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 123.6) internal successors, (618), 5 states have internal predecessors, (618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:48:05,069 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:48:05,069 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:48:05,077 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 19:48:05,274 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 19:48:05,274 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 1 more)] === [2023-08-03 19:48:05,275 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:48:05,275 INFO L85 PathProgramCache]: Analyzing trace with hash 2056660289, now seen corresponding path program 1 times [2023-08-03 19:48:05,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:48:05,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600494829] [2023-08-03 19:48:05,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:48:05,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:48:05,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:48:05,343 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 19:48:05,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:48:05,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600494829] [2023-08-03 19:48:05,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600494829] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:48:05,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1184270232] [2023-08-03 19:48:05,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:48:05,344 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:48:05,344 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:48:05,346 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 19:48:05,349 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 19:48:05,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:48:05,413 INFO L262 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 19:48:05,414 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:48:05,422 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 19:48:05,422 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:48:05,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1184270232] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:48:05,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 19:48:05,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-08-03 19:48:05,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318665752] [2023-08-03 19:48:05,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:48:05,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 19:48:05,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:48:05,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 19:48:05,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:48:05,433 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 263 [2023-08-03 19:48:05,434 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 60 transitions, 229 flow. Second operand has 3 states, 3 states have (on average 127.0) internal successors, (381), 3 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:48:05,434 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:48:05,434 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 263 [2023-08-03 19:48:05,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:48:07,285 INFO L124 PetriNetUnfolderBase]: 20523/31040 cut-off events. [2023-08-03 19:48:07,286 INFO L125 PetriNetUnfolderBase]: For 3626/3626 co-relation queries the response was YES. [2023-08-03 19:48:07,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63361 conditions, 31040 events. 20523/31040 cut-off events. For 3626/3626 co-relation queries the response was YES. Maximal size of possible extension queue 894. Compared 198621 event pairs, 14176 based on Foata normal form. 0/28705 useless extension candidates. Maximal degree in co-relation 38713. Up to 28639 conditions per place. [2023-08-03 19:48:07,472 INFO L140 encePairwiseOnDemand]: 260/263 looper letters, 57 selfloop transitions, 3 changer transitions 0/67 dead transitions. [2023-08-03 19:48:07,472 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 67 transitions, 363 flow [2023-08-03 19:48:07,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 19:48:07,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 19:48:07,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 424 transitions. [2023-08-03 19:48:07,474 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5373891001267427 [2023-08-03 19:48:07,474 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 424 transitions. [2023-08-03 19:48:07,474 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 424 transitions. [2023-08-03 19:48:07,474 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:48:07,474 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 424 transitions. [2023-08-03 19:48:07,475 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 141.33333333333334) internal successors, (424), 3 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:48:07,477 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 263.0) internal successors, (1052), 4 states have internal predecessors, (1052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:48:07,477 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 263.0) internal successors, (1052), 4 states have internal predecessors, (1052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:48:07,477 INFO L175 Difference]: Start difference. First operand has 62 places, 60 transitions, 229 flow. Second operand 3 states and 424 transitions. [2023-08-03 19:48:07,477 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 67 transitions, 363 flow [2023-08-03 19:48:07,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 67 transitions, 356 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-03 19:48:07,484 INFO L231 Difference]: Finished difference. Result has 63 places, 61 transitions, 237 flow [2023-08-03 19:48:07,484 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=263, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=237, PETRI_PLACES=63, PETRI_TRANSITIONS=61} [2023-08-03 19:48:07,484 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 9 predicate places. [2023-08-03 19:48:07,484 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 61 transitions, 237 flow [2023-08-03 19:48:07,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 127.0) internal successors, (381), 3 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:48:07,485 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:48:07,485 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:48:07,492 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 19:48:07,690 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 19:48:07,690 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:48:07,690 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:48:07,690 INFO L85 PathProgramCache]: Analyzing trace with hash -569084581, now seen corresponding path program 1 times [2023-08-03 19:48:07,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:48:07,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812033499] [2023-08-03 19:48:07,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:48:07,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:48:07,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:48:07,759 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-03 19:48:07,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:48:07,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812033499] [2023-08-03 19:48:07,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812033499] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:48:07,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [525973075] [2023-08-03 19:48:07,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:48:07,760 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:48:07,761 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:48:07,762 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 19:48:07,764 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 19:48:07,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:48:07,834 INFO L262 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 19:48:07,835 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:48:07,841 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-03 19:48:07,841 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:48:07,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [525973075] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:48:07,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 19:48:07,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-08-03 19:48:07,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740274063] [2023-08-03 19:48:07,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:48:07,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 19:48:07,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:48:07,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 19:48:07,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:48:07,851 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 263 [2023-08-03 19:48:07,851 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 61 transitions, 237 flow. Second operand has 3 states, 3 states have (on average 128.0) internal successors, (384), 3 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:48:07,852 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:48:07,852 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 263 [2023-08-03 19:48:07,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:48:09,526 INFO L124 PetriNetUnfolderBase]: 18859/28736 cut-off events. [2023-08-03 19:48:09,526 INFO L125 PetriNetUnfolderBase]: For 3426/3426 co-relation queries the response was YES. [2023-08-03 19:48:09,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59174 conditions, 28736 events. 18859/28736 cut-off events. For 3426/3426 co-relation queries the response was YES. Maximal size of possible extension queue 923. Compared 184753 event pairs, 13848 based on Foata normal form. 0/26737 useless extension candidates. Maximal degree in co-relation 36667. Up to 24559 conditions per place. [2023-08-03 19:48:09,720 INFO L140 encePairwiseOnDemand]: 260/263 looper letters, 66 selfloop transitions, 2 changer transitions 0/75 dead transitions. [2023-08-03 19:48:09,720 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 75 transitions, 415 flow [2023-08-03 19:48:09,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 19:48:09,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 19:48:09,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 431 transitions. [2023-08-03 19:48:09,721 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5462610899873257 [2023-08-03 19:48:09,722 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 431 transitions. [2023-08-03 19:48:09,722 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 431 transitions. [2023-08-03 19:48:09,722 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:48:09,722 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 431 transitions. [2023-08-03 19:48:09,723 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 143.66666666666666) internal successors, (431), 3 states have internal predecessors, (431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:48:09,724 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 263.0) internal successors, (1052), 4 states have internal predecessors, (1052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:48:09,725 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 263.0) internal successors, (1052), 4 states have internal predecessors, (1052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:48:09,725 INFO L175 Difference]: Start difference. First operand has 63 places, 61 transitions, 237 flow. Second operand 3 states and 431 transitions. [2023-08-03 19:48:09,725 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 75 transitions, 415 flow [2023-08-03 19:48:09,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 75 transitions, 412 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 19:48:09,730 INFO L231 Difference]: Finished difference. Result has 65 places, 62 transitions, 246 flow [2023-08-03 19:48:09,730 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=263, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=246, PETRI_PLACES=65, PETRI_TRANSITIONS=62} [2023-08-03 19:48:09,731 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 11 predicate places. [2023-08-03 19:48:09,731 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 62 transitions, 246 flow [2023-08-03 19:48:09,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 128.0) internal successors, (384), 3 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:48:09,731 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:48:09,731 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 19:48:09,736 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-03 19:48:09,936 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 19:48:09,936 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:48:09,937 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:48:09,937 INFO L85 PathProgramCache]: Analyzing trace with hash 579728361, now seen corresponding path program 1 times [2023-08-03 19:48:09,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:48:09,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431719262] [2023-08-03 19:48:09,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:48:09,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:48:09,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:48:09,977 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 19:48:09,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:48:09,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431719262] [2023-08-03 19:48:09,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431719262] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:48:09,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [127926520] [2023-08-03 19:48:09,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:48:09,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:48:09,978 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:48:09,979 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 19:48:10,004 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 19:48:10,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:48:10,095 INFO L262 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 19:48:10,098 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:48:10,118 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 19:48:10,119 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:48:10,136 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 19:48:10,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [127926520] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:48:10,137 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:48:10,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-03 19:48:10,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104933088] [2023-08-03 19:48:10,139 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:48:10,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:48:10,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:48:10,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:48:10,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:48:10,151 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 263 [2023-08-03 19:48:10,152 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 62 transitions, 246 flow. Second operand has 5 states, 5 states have (on average 124.6) internal successors, (623), 5 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:48:10,152 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:48:10,152 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 263 [2023-08-03 19:48:10,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:48:11,722 INFO L124 PetriNetUnfolderBase]: 18011/27400 cut-off events. [2023-08-03 19:48:11,722 INFO L125 PetriNetUnfolderBase]: For 4239/4239 co-relation queries the response was YES. [2023-08-03 19:48:11,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58065 conditions, 27400 events. 18011/27400 cut-off events. For 4239/4239 co-relation queries the response was YES. Maximal size of possible extension queue 940. Compared 173457 event pairs, 10290 based on Foata normal form. 8/26074 useless extension candidates. Maximal degree in co-relation 36435. Up to 25503 conditions per place. [2023-08-03 19:48:11,926 INFO L140 encePairwiseOnDemand]: 260/263 looper letters, 59 selfloop transitions, 3 changer transitions 0/69 dead transitions. [2023-08-03 19:48:11,926 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 69 transitions, 380 flow [2023-08-03 19:48:11,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 19:48:11,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 19:48:11,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 544 transitions. [2023-08-03 19:48:11,928 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5171102661596958 [2023-08-03 19:48:11,928 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 544 transitions. [2023-08-03 19:48:11,928 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 544 transitions. [2023-08-03 19:48:11,928 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:48:11,929 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 544 transitions. [2023-08-03 19:48:11,930 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 136.0) internal successors, (544), 4 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 19:48:11,931 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 263.0) internal successors, (1315), 5 states have internal predecessors, (1315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:48:11,931 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 263.0) internal successors, (1315), 5 states have internal predecessors, (1315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:48:11,932 INFO L175 Difference]: Start difference. First operand has 65 places, 62 transitions, 246 flow. Second operand 4 states and 544 transitions. [2023-08-03 19:48:11,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 69 transitions, 380 flow [2023-08-03 19:48:11,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 69 transitions, 378 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 19:48:11,941 INFO L231 Difference]: Finished difference. Result has 67 places, 61 transitions, 242 flow [2023-08-03 19:48:11,941 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=263, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=242, PETRI_PLACES=67, PETRI_TRANSITIONS=61} [2023-08-03 19:48:11,941 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 13 predicate places. [2023-08-03 19:48:11,941 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 61 transitions, 242 flow [2023-08-03 19:48:11,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 124.6) internal successors, (623), 5 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:48:11,942 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:48:11,942 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 19:48:11,951 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-08-03 19:48:12,146 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 19:48:12,147 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:48:12,147 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:48:12,147 INFO L85 PathProgramCache]: Analyzing trace with hash 1543941784, now seen corresponding path program 1 times [2023-08-03 19:48:12,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:48:12,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287129779] [2023-08-03 19:48:12,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:48:12,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:48:12,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:48:12,199 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 19:48:12,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:48:12,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287129779] [2023-08-03 19:48:12,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287129779] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:48:12,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1592282776] [2023-08-03 19:48:12,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:48:12,200 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:48:12,200 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:48:12,202 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 19:48:12,204 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 19:48:12,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:48:12,278 INFO L262 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 19:48:12,279 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:48:12,298 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 19:48:12,299 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:48:12,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1592282776] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:48:12,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 19:48:12,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2023-08-03 19:48:12,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378214224] [2023-08-03 19:48:12,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:48:12,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:48:12,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:48:12,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:48:12,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 19:48:12,312 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 263 [2023-08-03 19:48:12,312 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 61 transitions, 242 flow. Second operand has 5 states, 5 states have (on average 124.6) internal successors, (623), 5 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:48:12,312 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:48:12,312 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 263 [2023-08-03 19:48:12,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:48:14,177 INFO L124 PetriNetUnfolderBase]: 17819/27112 cut-off events. [2023-08-03 19:48:14,177 INFO L125 PetriNetUnfolderBase]: For 3835/3835 co-relation queries the response was YES. [2023-08-03 19:48:14,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57213 conditions, 27112 events. 17819/27112 cut-off events. For 3835/3835 co-relation queries the response was YES. Maximal size of possible extension queue 940. Compared 171609 event pairs, 766 based on Foata normal form. 64/25842 useless extension candidates. Maximal degree in co-relation 36017. Up to 24534 conditions per place. [2023-08-03 19:48:14,293 INFO L140 encePairwiseOnDemand]: 259/263 looper letters, 67 selfloop transitions, 4 changer transitions 0/77 dead transitions. [2023-08-03 19:48:14,293 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 77 transitions, 416 flow [2023-08-03 19:48:14,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 19:48:14,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 19:48:14,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 674 transitions. [2023-08-03 19:48:14,296 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5125475285171103 [2023-08-03 19:48:14,296 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 674 transitions. [2023-08-03 19:48:14,296 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 674 transitions. [2023-08-03 19:48:14,296 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:48:14,296 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 674 transitions. [2023-08-03 19:48:14,298 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 134.8) internal successors, (674), 5 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:48:14,300 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 263.0) internal successors, (1578), 6 states have internal predecessors, (1578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:48:14,300 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 263.0) internal successors, (1578), 6 states have internal predecessors, (1578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:48:14,300 INFO L175 Difference]: Start difference. First operand has 67 places, 61 transitions, 242 flow. Second operand 5 states and 674 transitions. [2023-08-03 19:48:14,300 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 77 transitions, 416 flow [2023-08-03 19:48:14,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 77 transitions, 402 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-03 19:48:14,309 INFO L231 Difference]: Finished difference. Result has 67 places, 61 transitions, 245 flow [2023-08-03 19:48:14,310 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=263, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=245, PETRI_PLACES=67, PETRI_TRANSITIONS=61} [2023-08-03 19:48:14,310 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 13 predicate places. [2023-08-03 19:48:14,310 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 61 transitions, 245 flow [2023-08-03 19:48:14,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 124.6) internal successors, (623), 5 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:48:14,311 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:48:14,311 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 19:48:14,318 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-03 19:48:14,518 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 19:48:14,519 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:48:14,519 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:48:14,519 INFO L85 PathProgramCache]: Analyzing trace with hash -987576576, now seen corresponding path program 1 times [2023-08-03 19:48:14,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:48:14,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859871304] [2023-08-03 19:48:14,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:48:14,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:48:14,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:48:14,594 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 19:48:14,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:48:14,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859871304] [2023-08-03 19:48:14,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859871304] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:48:14,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1429097819] [2023-08-03 19:48:14,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:48:14,595 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:48:14,595 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:48:14,596 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 19:48:14,622 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 19:48:14,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:48:14,685 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 19:48:14,686 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:48:14,695 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 19:48:14,695 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:48:14,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1429097819] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:48:14,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 19:48:14,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-08-03 19:48:14,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783023284] [2023-08-03 19:48:14,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:48:14,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 19:48:14,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:48:14,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 19:48:14,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:48:14,706 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 263 [2023-08-03 19:48:14,706 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 61 transitions, 245 flow. Second operand has 3 states, 3 states have (on average 129.66666666666666) internal successors, (389), 3 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:48:14,707 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:48:14,707 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 263 [2023-08-03 19:48:14,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:48:16,486 INFO L124 PetriNetUnfolderBase]: 17130/26587 cut-off events. [2023-08-03 19:48:16,486 INFO L125 PetriNetUnfolderBase]: For 4135/4135 co-relation queries the response was YES. [2023-08-03 19:48:16,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55951 conditions, 26587 events. 17130/26587 cut-off events. For 4135/4135 co-relation queries the response was YES. Maximal size of possible extension queue 782. Compared 173716 event pairs, 11236 based on Foata normal form. 0/25637 useless extension candidates. Maximal degree in co-relation 36216. Up to 18927 conditions per place. [2023-08-03 19:48:16,602 INFO L140 encePairwiseOnDemand]: 260/263 looper letters, 67 selfloop transitions, 2 changer transitions 0/75 dead transitions. [2023-08-03 19:48:16,602 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 75 transitions, 423 flow [2023-08-03 19:48:16,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 19:48:16,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 19:48:16,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 431 transitions. [2023-08-03 19:48:16,604 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5462610899873257 [2023-08-03 19:48:16,604 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 431 transitions. [2023-08-03 19:48:16,604 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 431 transitions. [2023-08-03 19:48:16,604 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:48:16,604 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 431 transitions. [2023-08-03 19:48:16,605 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 143.66666666666666) internal successors, (431), 3 states have internal predecessors, (431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:48:16,606 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 263.0) internal successors, (1052), 4 states have internal predecessors, (1052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:48:16,607 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 263.0) internal successors, (1052), 4 states have internal predecessors, (1052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:48:16,607 INFO L175 Difference]: Start difference. First operand has 67 places, 61 transitions, 245 flow. Second operand 3 states and 431 transitions. [2023-08-03 19:48:16,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 75 transitions, 423 flow [2023-08-03 19:48:16,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 75 transitions, 416 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-03 19:48:16,614 INFO L231 Difference]: Finished difference. Result has 68 places, 62 transitions, 250 flow [2023-08-03 19:48:16,614 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=263, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=250, PETRI_PLACES=68, PETRI_TRANSITIONS=62} [2023-08-03 19:48:16,615 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 14 predicate places. [2023-08-03 19:48:16,615 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 62 transitions, 250 flow [2023-08-03 19:48:16,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 129.66666666666666) internal successors, (389), 3 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:48:16,615 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:48:16,615 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:48:16,621 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 19:48:16,820 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 19:48:16,820 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:48:16,820 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:48:16,820 INFO L85 PathProgramCache]: Analyzing trace with hash -1127257755, now seen corresponding path program 1 times [2023-08-03 19:48:16,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:48:16,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565815038] [2023-08-03 19:48:16,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:48:16,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:48:16,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:48:16,880 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 19:48:16,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:48:16,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565815038] [2023-08-03 19:48:16,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565815038] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:48:16,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1115495765] [2023-08-03 19:48:16,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:48:16,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:48:16,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:48:16,882 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 19:48:16,885 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 19:48:16,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:48:16,964 INFO L262 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 19:48:16,965 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:48:16,971 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-08-03 19:48:16,972 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:48:16,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1115495765] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:48:16,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 19:48:16,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-08-03 19:48:16,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275116177] [2023-08-03 19:48:16,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:48:16,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 19:48:16,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:48:16,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 19:48:16,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:48:16,982 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 263 [2023-08-03 19:48:16,982 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 62 transitions, 250 flow. Second operand has 3 states, 3 states have (on average 131.0) internal successors, (393), 3 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:48:16,982 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:48:16,982 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 263 [2023-08-03 19:48:16,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:48:18,762 INFO L124 PetriNetUnfolderBase]: 16921/26510 cut-off events. [2023-08-03 19:48:18,762 INFO L125 PetriNetUnfolderBase]: For 5291/5291 co-relation queries the response was YES. [2023-08-03 19:48:18,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58083 conditions, 26510 events. 16921/26510 cut-off events. For 5291/5291 co-relation queries the response was YES. Maximal size of possible extension queue 728. Compared 174234 event pairs, 12627 based on Foata normal form. 0/26273 useless extension candidates. Maximal degree in co-relation 38209. Up to 21081 conditions per place. [2023-08-03 19:48:18,852 INFO L140 encePairwiseOnDemand]: 260/263 looper letters, 68 selfloop transitions, 2 changer transitions 0/76 dead transitions. [2023-08-03 19:48:18,853 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 76 transitions, 430 flow [2023-08-03 19:48:18,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 19:48:18,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 19:48:18,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 431 transitions. [2023-08-03 19:48:18,854 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5462610899873257 [2023-08-03 19:48:18,854 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 431 transitions. [2023-08-03 19:48:18,854 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 431 transitions. [2023-08-03 19:48:18,854 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:48:18,855 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 431 transitions. [2023-08-03 19:48:18,855 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 143.66666666666666) internal successors, (431), 3 states have internal predecessors, (431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:48:18,856 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 263.0) internal successors, (1052), 4 states have internal predecessors, (1052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:48:18,857 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 263.0) internal successors, (1052), 4 states have internal predecessors, (1052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:48:18,857 INFO L175 Difference]: Start difference. First operand has 68 places, 62 transitions, 250 flow. Second operand 3 states and 431 transitions. [2023-08-03 19:48:18,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 76 transitions, 430 flow [2023-08-03 19:48:19,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 76 transitions, 428 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 19:48:19,013 INFO L231 Difference]: Finished difference. Result has 70 places, 63 transitions, 260 flow [2023-08-03 19:48:19,013 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=263, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=260, PETRI_PLACES=70, PETRI_TRANSITIONS=63} [2023-08-03 19:48:19,014 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 16 predicate places. [2023-08-03 19:48:19,014 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 63 transitions, 260 flow [2023-08-03 19:48:19,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 131.0) internal successors, (393), 3 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:48:19,014 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:48:19,014 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:48:19,021 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 19:48:19,219 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 19:48:19,219 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:48:19,220 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:48:19,220 INFO L85 PathProgramCache]: Analyzing trace with hash 1757231230, now seen corresponding path program 1 times [2023-08-03 19:48:19,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:48:19,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238152325] [2023-08-03 19:48:19,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:48:19,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:48:19,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:48:19,281 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-08-03 19:48:19,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:48:19,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238152325] [2023-08-03 19:48:19,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238152325] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:48:19,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1491508821] [2023-08-03 19:48:19,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:48:19,282 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:48:19,282 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:48:19,283 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 19:48:19,306 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 19:48:19,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:48:19,376 INFO L262 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 19:48:19,384 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:48:19,402 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-08-03 19:48:19,402 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:48:19,418 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-08-03 19:48:19,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1491508821] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:48:19,419 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:48:19,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-03 19:48:19,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426136374] [2023-08-03 19:48:19,419 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:48:19,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:48:19,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:48:19,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:48:19,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:48:19,432 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 263 [2023-08-03 19:48:19,433 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 63 transitions, 260 flow. Second operand has 5 states, 5 states have (on average 128.0) internal successors, (640), 5 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:48:19,433 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:48:19,433 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 263 [2023-08-03 19:48:19,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:48:21,084 INFO L124 PetriNetUnfolderBase]: 16521/25886 cut-off events. [2023-08-03 19:48:21,084 INFO L125 PetriNetUnfolderBase]: For 5005/5005 co-relation queries the response was YES. [2023-08-03 19:48:21,145 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57464 conditions, 25886 events. 16521/25886 cut-off events. For 5005/5005 co-relation queries the response was YES. Maximal size of possible extension queue 702. Compared 168499 event pairs, 9695 based on Foata normal form. 32/25914 useless extension candidates. Maximal degree in co-relation 42454. Up to 23507 conditions per place. [2023-08-03 19:48:21,199 INFO L140 encePairwiseOnDemand]: 260/263 looper letters, 65 selfloop transitions, 3 changer transitions 0/74 dead transitions. [2023-08-03 19:48:21,199 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 74 transitions, 414 flow [2023-08-03 19:48:21,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 19:48:21,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 19:48:21,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 548 transitions. [2023-08-03 19:48:21,201 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5209125475285171 [2023-08-03 19:48:21,201 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 548 transitions. [2023-08-03 19:48:21,201 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 548 transitions. [2023-08-03 19:48:21,201 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:48:21,201 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 548 transitions. [2023-08-03 19:48:21,202 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 137.0) internal successors, (548), 4 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 19:48:21,203 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 263.0) internal successors, (1315), 5 states have internal predecessors, (1315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:48:21,203 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 263.0) internal successors, (1315), 5 states have internal predecessors, (1315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:48:21,203 INFO L175 Difference]: Start difference. First operand has 70 places, 63 transitions, 260 flow. Second operand 4 states and 548 transitions. [2023-08-03 19:48:21,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 74 transitions, 414 flow [2023-08-03 19:48:21,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 74 transitions, 412 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 19:48:21,434 INFO L231 Difference]: Finished difference. Result has 72 places, 62 transitions, 256 flow [2023-08-03 19:48:21,435 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=263, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=256, PETRI_PLACES=72, PETRI_TRANSITIONS=62} [2023-08-03 19:48:21,436 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 18 predicate places. [2023-08-03 19:48:21,437 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 62 transitions, 256 flow [2023-08-03 19:48:21,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 128.0) internal successors, (640), 5 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:48:21,438 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:48:21,438 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 19:48:21,446 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 19:48:21,643 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 19:48:21,643 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:48:21,643 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:48:21,644 INFO L85 PathProgramCache]: Analyzing trace with hash 1543439479, now seen corresponding path program 1 times [2023-08-03 19:48:21,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:48:21,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29334782] [2023-08-03 19:48:21,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:48:21,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:48:21,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:48:21,732 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 19:48:21,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:48:21,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29334782] [2023-08-03 19:48:21,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29334782] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:48:21,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1179940347] [2023-08-03 19:48:21,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:48:21,733 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:48:21,733 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:48:21,735 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 19:48:21,754 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 19:48:21,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:48:21,828 INFO L262 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 19:48:21,829 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:48:21,842 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 19:48:21,842 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:48:21,855 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 19:48:21,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1179940347] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:48:21,856 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:48:21,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-03 19:48:21,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129952087] [2023-08-03 19:48:21,856 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:48:21,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:48:21,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:48:21,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:48:21,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:48:21,869 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 263 [2023-08-03 19:48:21,870 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 62 transitions, 256 flow. Second operand has 5 states, 5 states have (on average 128.2) internal successors, (641), 5 states have internal predecessors, (641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:48:21,871 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:48:21,871 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 263 [2023-08-03 19:48:21,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:48:23,275 INFO L124 PetriNetUnfolderBase]: 10381/16522 cut-off events. [2023-08-03 19:48:23,275 INFO L125 PetriNetUnfolderBase]: For 3568/3568 co-relation queries the response was YES. [2023-08-03 19:48:23,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36751 conditions, 16522 events. 10381/16522 cut-off events. For 3568/3568 co-relation queries the response was YES. Maximal size of possible extension queue 465. Compared 100025 event pairs, 5440 based on Foata normal form. 192/16710 useless extension candidates. Maximal degree in co-relation 31654. Up to 9564 conditions per place. [2023-08-03 19:48:23,341 INFO L140 encePairwiseOnDemand]: 259/263 looper letters, 72 selfloop transitions, 4 changer transitions 0/82 dead transitions. [2023-08-03 19:48:23,341 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 82 transitions, 460 flow [2023-08-03 19:48:23,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 19:48:23,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 19:48:23,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 556 transitions. [2023-08-03 19:48:23,343 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5285171102661597 [2023-08-03 19:48:23,343 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 556 transitions. [2023-08-03 19:48:23,343 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 556 transitions. [2023-08-03 19:48:23,344 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:48:23,344 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 556 transitions. [2023-08-03 19:48:23,345 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 139.0) internal successors, (556), 4 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:48:23,346 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 263.0) internal successors, (1315), 5 states have internal predecessors, (1315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:48:23,347 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 263.0) internal successors, (1315), 5 states have internal predecessors, (1315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:48:23,347 INFO L175 Difference]: Start difference. First operand has 72 places, 62 transitions, 256 flow. Second operand 4 states and 556 transitions. [2023-08-03 19:48:23,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 82 transitions, 460 flow [2023-08-03 19:48:23,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 82 transitions, 454 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-03 19:48:23,420 INFO L231 Difference]: Finished difference. Result has 74 places, 63 transitions, 270 flow [2023-08-03 19:48:23,420 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=263, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=270, PETRI_PLACES=74, PETRI_TRANSITIONS=63} [2023-08-03 19:48:23,421 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 20 predicate places. [2023-08-03 19:48:23,421 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 63 transitions, 270 flow [2023-08-03 19:48:23,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 128.2) internal successors, (641), 5 states have internal predecessors, (641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:48:23,422 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:48:23,422 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] [2023-08-03 19:48:23,426 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 19:48:23,622 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 19:48:23,623 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:48:23,623 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:48:23,623 INFO L85 PathProgramCache]: Analyzing trace with hash 1649293140, now seen corresponding path program 1 times [2023-08-03 19:48:23,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:48:23,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704704611] [2023-08-03 19:48:23,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:48:23,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:48:23,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:48:23,717 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-08-03 19:48:23,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:48:23,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704704611] [2023-08-03 19:48:23,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704704611] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:48:23,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1320604044] [2023-08-03 19:48:23,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:48:23,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:48:23,718 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:48:23,720 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 19:48:23,724 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 19:48:23,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:48:23,824 INFO L262 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 19:48:23,825 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:48:23,837 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-08-03 19:48:23,837 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:48:23,855 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-08-03 19:48:23,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1320604044] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:48:23,855 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:48:23,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-03 19:48:23,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304732953] [2023-08-03 19:48:23,856 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:48:23,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:48:23,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:48:23,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:48:23,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:48:23,868 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 263 [2023-08-03 19:48:23,869 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 63 transitions, 270 flow. Second operand has 5 states, 5 states have (on average 128.6) internal successors, (643), 5 states have internal predecessors, (643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:48:23,869 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:48:23,869 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 263 [2023-08-03 19:48:23,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:48:24,976 INFO L124 PetriNetUnfolderBase]: 9421/14931 cut-off events. [2023-08-03 19:48:24,976 INFO L125 PetriNetUnfolderBase]: For 6527/6527 co-relation queries the response was YES. [2023-08-03 19:48:25,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35869 conditions, 14931 events. 9421/14931 cut-off events. For 6527/6527 co-relation queries the response was YES. Maximal size of possible extension queue 409. Compared 88093 event pairs, 5948 based on Foata normal form. 233/15160 useless extension candidates. Maximal degree in co-relation 34761. Up to 8751 conditions per place. [2023-08-03 19:48:25,058 INFO L140 encePairwiseOnDemand]: 259/263 looper letters, 73 selfloop transitions, 4 changer transitions 0/83 dead transitions. [2023-08-03 19:48:25,058 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 83 transitions, 476 flow [2023-08-03 19:48:25,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 19:48:25,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 19:48:25,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 556 transitions. [2023-08-03 19:48:25,060 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5285171102661597 [2023-08-03 19:48:25,060 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 556 transitions. [2023-08-03 19:48:25,060 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 556 transitions. [2023-08-03 19:48:25,060 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:48:25,060 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 556 transitions. [2023-08-03 19:48:25,061 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 139.0) internal successors, (556), 4 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:48:25,063 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 263.0) internal successors, (1315), 5 states have internal predecessors, (1315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:48:25,063 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 263.0) internal successors, (1315), 5 states have internal predecessors, (1315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:48:25,063 INFO L175 Difference]: Start difference. First operand has 74 places, 63 transitions, 270 flow. Second operand 4 states and 556 transitions. [2023-08-03 19:48:25,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 83 transitions, 476 flow [2023-08-03 19:48:25,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 83 transitions, 472 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-03 19:48:25,138 INFO L231 Difference]: Finished difference. Result has 78 places, 64 transitions, 286 flow [2023-08-03 19:48:25,138 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=263, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=286, PETRI_PLACES=78, PETRI_TRANSITIONS=64} [2023-08-03 19:48:25,139 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 24 predicate places. [2023-08-03 19:48:25,139 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 64 transitions, 286 flow [2023-08-03 19:48:25,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 128.6) internal successors, (643), 5 states have internal predecessors, (643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:48:25,139 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:48:25,140 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:48:25,190 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 19:48:25,390 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 19:48:25,390 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:48:25,391 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:48:25,391 INFO L85 PathProgramCache]: Analyzing trace with hash -174414912, now seen corresponding path program 1 times [2023-08-03 19:48:25,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:48:25,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067222654] [2023-08-03 19:48:25,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:48:25,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:48:25,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:48:25,483 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-08-03 19:48:25,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:48:25,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067222654] [2023-08-03 19:48:25,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067222654] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:48:25,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [13460307] [2023-08-03 19:48:25,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:48:25,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:48:25,484 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:48:25,485 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 19:48:25,489 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 19:48:25,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:48:25,589 INFO L262 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 19:48:25,593 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:48:25,603 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-08-03 19:48:25,603 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:48:25,616 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-08-03 19:48:25,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [13460307] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:48:25,617 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:48:25,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-03 19:48:25,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360657088] [2023-08-03 19:48:25,617 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:48:25,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:48:25,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:48:25,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:48:25,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:48:25,630 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 263 [2023-08-03 19:48:25,631 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 64 transitions, 286 flow. Second operand has 5 states, 5 states have (on average 129.0) internal successors, (645), 5 states have internal predecessors, (645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:48:25,631 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:48:25,631 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 263 [2023-08-03 19:48:25,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:48:26,775 INFO L124 PetriNetUnfolderBase]: 9409/14896 cut-off events. [2023-08-03 19:48:26,776 INFO L125 PetriNetUnfolderBase]: For 7481/7481 co-relation queries the response was YES. [2023-08-03 19:48:26,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37502 conditions, 14896 events. 9409/14896 cut-off events. For 7481/7481 co-relation queries the response was YES. Maximal size of possible extension queue 409. Compared 87840 event pairs, 8414 based on Foata normal form. 13/14905 useless extension candidates. Maximal degree in co-relation 36401. Up to 13454 conditions per place. [2023-08-03 19:48:26,821 INFO L140 encePairwiseOnDemand]: 259/263 looper letters, 72 selfloop transitions, 3 changer transitions 3/84 dead transitions. [2023-08-03 19:48:26,821 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 84 transitions, 494 flow [2023-08-03 19:48:26,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 19:48:26,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 19:48:26,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 556 transitions. [2023-08-03 19:48:26,822 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5285171102661597 [2023-08-03 19:48:26,823 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 556 transitions. [2023-08-03 19:48:26,823 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 556 transitions. [2023-08-03 19:48:26,823 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:48:26,823 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 556 transitions. [2023-08-03 19:48:26,824 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 139.0) internal successors, (556), 4 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:48:26,825 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 263.0) internal successors, (1315), 5 states have internal predecessors, (1315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:48:26,826 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 263.0) internal successors, (1315), 5 states have internal predecessors, (1315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:48:26,826 INFO L175 Difference]: Start difference. First operand has 78 places, 64 transitions, 286 flow. Second operand 4 states and 556 transitions. [2023-08-03 19:48:26,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 84 transitions, 494 flow [2023-08-03 19:48:26,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 84 transitions, 490 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-03 19:48:26,952 INFO L231 Difference]: Finished difference. Result has 82 places, 62 transitions, 284 flow [2023-08-03 19:48:26,952 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=263, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=284, PETRI_PLACES=82, PETRI_TRANSITIONS=62} [2023-08-03 19:48:26,953 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 28 predicate places. [2023-08-03 19:48:26,953 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 62 transitions, 284 flow [2023-08-03 19:48:26,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 129.0) internal successors, (645), 5 states have internal predecessors, (645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:48:26,953 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:48:26,953 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:48:26,958 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 19:48:27,155 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 19:48:27,155 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:48:27,155 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:48:27,155 INFO L85 PathProgramCache]: Analyzing trace with hash 613315567, now seen corresponding path program 1 times [2023-08-03 19:48:27,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:48:27,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253332490] [2023-08-03 19:48:27,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:48:27,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:48:27,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:48:29,269 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-08-03 19:48:29,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:48:29,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253332490] [2023-08-03 19:48:29,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253332490] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:48:29,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [489567492] [2023-08-03 19:48:29,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:48:29,270 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:48:29,270 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:48:29,271 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 19:48:29,292 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 19:48:29,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:48:29,388 INFO L262 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 16 conjunts are in the unsatisfiable core [2023-08-03 19:48:29,392 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:48:32,500 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-08-03 19:48:32,500 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:48:33,801 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-08-03 19:48:33,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [489567492] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:48:33,801 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:48:33,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-08-03 19:48:33,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106780208] [2023-08-03 19:48:33,802 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:48:33,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-03 19:48:33,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:48:33,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-03 19:48:33,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-08-03 19:48:33,909 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 263 [2023-08-03 19:48:33,910 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 62 transitions, 284 flow. Second operand has 11 states, 11 states have (on average 118.0909090909091) internal successors, (1299), 11 states have internal predecessors, (1299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:48:33,910 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:48:33,911 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 263 [2023-08-03 19:48:33,911 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:48:36,321 INFO L124 PetriNetUnfolderBase]: 13808/21708 cut-off events. [2023-08-03 19:48:36,322 INFO L125 PetriNetUnfolderBase]: For 13982/13982 co-relation queries the response was YES. [2023-08-03 19:48:36,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54013 conditions, 21708 events. 13808/21708 cut-off events. For 13982/13982 co-relation queries the response was YES. Maximal size of possible extension queue 605. Compared 141422 event pairs, 1385 based on Foata normal form. 1/21570 useless extension candidates. Maximal degree in co-relation 53926. Up to 6570 conditions per place. [2023-08-03 19:48:36,476 INFO L140 encePairwiseOnDemand]: 254/263 looper letters, 160 selfloop transitions, 13 changer transitions 54/233 dead transitions. [2023-08-03 19:48:36,476 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 233 transitions, 1556 flow [2023-08-03 19:48:36,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-03 19:48:36,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-03 19:48:36,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1091 transitions. [2023-08-03 19:48:36,478 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5185361216730038 [2023-08-03 19:48:36,478 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1091 transitions. [2023-08-03 19:48:36,478 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1091 transitions. [2023-08-03 19:48:36,479 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:48:36,479 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1091 transitions. [2023-08-03 19:48:36,481 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 136.375) internal successors, (1091), 8 states have internal predecessors, (1091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:48:36,483 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 263.0) internal successors, (2367), 9 states have internal predecessors, (2367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:48:36,484 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 263.0) internal successors, (2367), 9 states have internal predecessors, (2367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:48:36,484 INFO L175 Difference]: Start difference. First operand has 82 places, 62 transitions, 284 flow. Second operand 8 states and 1091 transitions. [2023-08-03 19:48:36,484 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 233 transitions, 1556 flow [2023-08-03 19:48:36,937 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 233 transitions, 1516 flow, removed 3 selfloop flow, removed 4 redundant places. [2023-08-03 19:48:36,939 INFO L231 Difference]: Finished difference. Result has 92 places, 74 transitions, 386 flow [2023-08-03 19:48:36,939 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=263, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=386, PETRI_PLACES=92, PETRI_TRANSITIONS=74} [2023-08-03 19:48:36,940 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 38 predicate places. [2023-08-03 19:48:36,940 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 74 transitions, 386 flow [2023-08-03 19:48:36,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 118.0909090909091) internal successors, (1299), 11 states have internal predecessors, (1299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:48:36,940 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:48:36,940 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:48:36,944 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 19:48:37,140 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 19:48:37,141 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:48:37,141 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:48:37,141 INFO L85 PathProgramCache]: Analyzing trace with hash -1533889607, now seen corresponding path program 2 times [2023-08-03 19:48:37,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:48:37,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268026485] [2023-08-03 19:48:37,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:48:37,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:48:37,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:48:38,946 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-08-03 19:48:38,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:48:38,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268026485] [2023-08-03 19:48:38,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268026485] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:48:38,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1550601855] [2023-08-03 19:48:38,946 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-03 19:48:38,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:48:38,947 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:48:38,949 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 19:48:38,970 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 19:48:39,061 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-03 19:48:39,061 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-03 19:48:39,062 INFO L262 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 16 conjunts are in the unsatisfiable core [2023-08-03 19:48:39,065 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:48:40,275 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-08-03 19:48:40,276 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:48:40,890 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-08-03 19:48:40,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1550601855] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:48:40,890 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:48:40,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-08-03 19:48:40,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131355369] [2023-08-03 19:48:40,891 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:48:40,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-03 19:48:40,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:48:40,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-03 19:48:40,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-08-03 19:48:40,968 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 263 [2023-08-03 19:48:40,969 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 74 transitions, 386 flow. Second operand has 11 states, 11 states have (on average 117.45454545454545) internal successors, (1292), 11 states have internal predecessors, (1292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:48:40,969 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:48:40,969 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 263 [2023-08-03 19:48:40,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:48:43,804 INFO L124 PetriNetUnfolderBase]: 15274/25598 cut-off events. [2023-08-03 19:48:43,805 INFO L125 PetriNetUnfolderBase]: For 60177/60177 co-relation queries the response was YES. [2023-08-03 19:48:43,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93211 conditions, 25598 events. 15274/25598 cut-off events. For 60177/60177 co-relation queries the response was YES. Maximal size of possible extension queue 788. Compared 188990 event pairs, 2488 based on Foata normal form. 1/25487 useless extension candidates. Maximal degree in co-relation 93175. Up to 10924 conditions per place. [2023-08-03 19:48:43,911 INFO L140 encePairwiseOnDemand]: 254/263 looper letters, 136 selfloop transitions, 9 changer transitions 74/225 dead transitions. [2023-08-03 19:48:43,911 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 225 transitions, 1636 flow [2023-08-03 19:48:43,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-03 19:48:43,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-03 19:48:43,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1082 transitions. [2023-08-03 19:48:43,919 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5142585551330798 [2023-08-03 19:48:43,919 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1082 transitions. [2023-08-03 19:48:43,919 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1082 transitions. [2023-08-03 19:48:43,919 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:48:43,919 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1082 transitions. [2023-08-03 19:48:43,921 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 135.25) internal successors, (1082), 8 states have internal predecessors, (1082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:48:43,924 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 263.0) internal successors, (2367), 9 states have internal predecessors, (2367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:48:43,924 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 263.0) internal successors, (2367), 9 states have internal predecessors, (2367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:48:43,924 INFO L175 Difference]: Start difference. First operand has 92 places, 74 transitions, 386 flow. Second operand 8 states and 1082 transitions. [2023-08-03 19:48:43,924 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 225 transitions, 1636 flow [2023-08-03 19:48:44,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 225 transitions, 1626 flow, removed 5 selfloop flow, removed 2 redundant places. [2023-08-03 19:48:44,206 INFO L231 Difference]: Finished difference. Result has 99 places, 72 transitions, 410 flow [2023-08-03 19:48:44,207 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=263, PETRI_DIFFERENCE_MINUEND_FLOW=382, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=410, PETRI_PLACES=99, PETRI_TRANSITIONS=72} [2023-08-03 19:48:44,207 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 45 predicate places. [2023-08-03 19:48:44,207 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 72 transitions, 410 flow [2023-08-03 19:48:44,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 117.45454545454545) internal successors, (1292), 11 states have internal predecessors, (1292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:48:44,207 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:48:44,208 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:48:44,214 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 19:48:44,412 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 19:48:44,412 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:48:44,413 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:48:44,413 INFO L85 PathProgramCache]: Analyzing trace with hash 1213952783, now seen corresponding path program 1 times [2023-08-03 19:48:44,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:48:44,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921508136] [2023-08-03 19:48:44,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:48:44,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:48:44,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:48:45,425 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 14 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-08-03 19:48:45,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:48:45,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921508136] [2023-08-03 19:48:45,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921508136] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:48:45,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [829009925] [2023-08-03 19:48:45,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:48:45,426 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:48:45,426 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:48:45,429 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:48:45,458 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-08-03 19:48:45,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:48:45,551 INFO L262 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 16 conjunts are in the unsatisfiable core [2023-08-03 19:48:45,553 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:48:47,451 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-08-03 19:48:47,451 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:48:48,512 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-08-03 19:48:48,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [829009925] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:48:48,513 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:48:48,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5, 5] total 19 [2023-08-03 19:48:48,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253884459] [2023-08-03 19:48:48,513 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:48:48,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-03 19:48:48,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:48:48,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-03 19:48:48,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2023-08-03 19:48:49,561 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 263 [2023-08-03 19:48:49,563 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 72 transitions, 410 flow. Second operand has 19 states, 19 states have (on average 95.3157894736842) internal successors, (1811), 19 states have internal predecessors, (1811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:48:49,563 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:48:49,563 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 263 [2023-08-03 19:48:49,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:48:55,806 INFO L124 PetriNetUnfolderBase]: 18806/32019 cut-off events. [2023-08-03 19:48:55,806 INFO L125 PetriNetUnfolderBase]: For 116340/116340 co-relation queries the response was YES. [2023-08-03 19:48:56,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128062 conditions, 32019 events. 18806/32019 cut-off events. For 116340/116340 co-relation queries the response was YES. Maximal size of possible extension queue 1000. Compared 249702 event pairs, 3281 based on Foata normal form. 117/32118 useless extension candidates. Maximal degree in co-relation 128023. Up to 11486 conditions per place. [2023-08-03 19:48:56,042 INFO L140 encePairwiseOnDemand]: 244/263 looper letters, 175 selfloop transitions, 53 changer transitions 101/333 dead transitions. [2023-08-03 19:48:56,042 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 333 transitions, 2763 flow [2023-08-03 19:48:56,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-08-03 19:48:56,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2023-08-03 19:48:56,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 2494 transitions. [2023-08-03 19:48:56,046 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37931558935361215 [2023-08-03 19:48:56,046 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 2494 transitions. [2023-08-03 19:48:56,046 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 2494 transitions. [2023-08-03 19:48:56,047 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:48:56,047 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 2494 transitions. [2023-08-03 19:48:56,050 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 99.76) internal successors, (2494), 25 states have internal predecessors, (2494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:48:56,057 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 263.0) internal successors, (6838), 26 states have internal predecessors, (6838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:48:56,058 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 263.0) internal successors, (6838), 26 states have internal predecessors, (6838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:48:56,059 INFO L175 Difference]: Start difference. First operand has 99 places, 72 transitions, 410 flow. Second operand 25 states and 2494 transitions. [2023-08-03 19:48:56,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 333 transitions, 2763 flow [2023-08-03 19:48:56,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 333 transitions, 2537 flow, removed 89 selfloop flow, removed 5 redundant places. [2023-08-03 19:48:56,727 INFO L231 Difference]: Finished difference. Result has 129 places, 115 transitions, 913 flow [2023-08-03 19:48:56,727 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=263, PETRI_DIFFERENCE_MINUEND_FLOW=378, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=913, PETRI_PLACES=129, PETRI_TRANSITIONS=115} [2023-08-03 19:48:56,727 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 75 predicate places. [2023-08-03 19:48:56,727 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 115 transitions, 913 flow [2023-08-03 19:48:56,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 95.3157894736842) internal successors, (1811), 19 states have internal predecessors, (1811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:48:56,728 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:48:56,728 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:48:56,736 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-08-03 19:48:56,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:48:56,934 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:48:56,934 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:48:56,934 INFO L85 PathProgramCache]: Analyzing trace with hash -701415499, now seen corresponding path program 2 times [2023-08-03 19:48:56,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:48:56,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969134316] [2023-08-03 19:48:56,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:48:56,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:48:57,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:48:57,751 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-08-03 19:48:57,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:48:57,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969134316] [2023-08-03 19:48:57,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969134316] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:48:57,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2121399153] [2023-08-03 19:48:57,752 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-03 19:48:57,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:48:57,752 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:48:57,754 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:48:57,756 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-08-03 19:48:57,872 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-03 19:48:57,872 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-03 19:48:57,874 INFO L262 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 16 conjunts are in the unsatisfiable core [2023-08-03 19:48:57,875 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:49:00,214 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-08-03 19:49:00,214 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:49:01,461 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-08-03 19:49:01,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2121399153] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:49:01,462 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:49:01,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 18 [2023-08-03 19:49:01,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128879939] [2023-08-03 19:49:01,462 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:49:01,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-03 19:49:01,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:49:01,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-03 19:49:01,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2023-08-03 19:49:01,991 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 263 [2023-08-03 19:49:01,992 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 115 transitions, 913 flow. Second operand has 18 states, 18 states have (on average 98.5) internal successors, (1773), 18 states have internal predecessors, (1773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:49:01,992 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:49:01,992 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 263 [2023-08-03 19:49:01,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:49:07,324 INFO L124 PetriNetUnfolderBase]: 11751/21368 cut-off events. [2023-08-03 19:49:07,324 INFO L125 PetriNetUnfolderBase]: For 168441/168725 co-relation queries the response was YES. [2023-08-03 19:49:07,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109553 conditions, 21368 events. 11751/21368 cut-off events. For 168441/168725 co-relation queries the response was YES. Maximal size of possible extension queue 722. Compared 167577 event pairs, 1212 based on Foata normal form. 152/21502 useless extension candidates. Maximal degree in co-relation 109502. Up to 8614 conditions per place. [2023-08-03 19:49:07,450 INFO L140 encePairwiseOnDemand]: 244/263 looper letters, 157 selfloop transitions, 70 changer transitions 188/422 dead transitions. [2023-08-03 19:49:07,450 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 422 transitions, 4454 flow [2023-08-03 19:49:07,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2023-08-03 19:49:07,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2023-08-03 19:49:07,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 4194 transitions. [2023-08-03 19:49:07,456 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3796849538294405 [2023-08-03 19:49:07,456 INFO L72 ComplementDD]: Start complementDD. Operand 42 states and 4194 transitions. [2023-08-03 19:49:07,456 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 4194 transitions. [2023-08-03 19:49:07,457 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:49:07,457 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 42 states and 4194 transitions. [2023-08-03 19:49:07,462 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 43 states, 42 states have (on average 99.85714285714286) internal successors, (4194), 42 states have internal predecessors, (4194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:49:07,473 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 43 states, 43 states have (on average 263.0) internal successors, (11309), 43 states have internal predecessors, (11309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:49:07,474 INFO L81 ComplementDD]: Finished complementDD. Result has 43 states, 43 states have (on average 263.0) internal successors, (11309), 43 states have internal predecessors, (11309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:49:07,474 INFO L175 Difference]: Start difference. First operand has 129 places, 115 transitions, 913 flow. Second operand 42 states and 4194 transitions. [2023-08-03 19:49:07,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 422 transitions, 4454 flow [2023-08-03 19:49:08,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 422 transitions, 4215 flow, removed 91 selfloop flow, removed 9 redundant places. [2023-08-03 19:49:08,067 INFO L231 Difference]: Finished difference. Result has 168 places, 145 transitions, 1297 flow [2023-08-03 19:49:08,067 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=263, PETRI_DIFFERENCE_MINUEND_FLOW=842, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=42, PETRI_FLOW=1297, PETRI_PLACES=168, PETRI_TRANSITIONS=145} [2023-08-03 19:49:08,068 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 114 predicate places. [2023-08-03 19:49:08,068 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 145 transitions, 1297 flow [2023-08-03 19:49:08,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 98.5) internal successors, (1773), 18 states have internal predecessors, (1773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:49:08,068 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:49:08,068 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:49:08,073 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-08-03 19:49:08,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:49:08,269 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:49:08,269 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:49:08,269 INFO L85 PathProgramCache]: Analyzing trace with hash 1838131919, now seen corresponding path program 1 times [2023-08-03 19:49:08,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:49:08,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333161869] [2023-08-03 19:49:08,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:49:08,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:49:08,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:49:09,906 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-08-03 19:49:09,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:49:09,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333161869] [2023-08-03 19:49:09,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333161869] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:49:09,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 19:49:09,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-03 19:49:09,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427686623] [2023-08-03 19:49:09,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:49:09,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-03 19:49:09,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:49:09,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-03 19:49:09,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-03 19:49:09,975 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 263 [2023-08-03 19:49:09,975 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 145 transitions, 1297 flow. Second operand has 7 states, 7 states have (on average 116.57142857142857) internal successors, (816), 7 states have internal predecessors, (816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:49:09,976 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:49:09,976 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 263 [2023-08-03 19:49:09,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:49:12,084 INFO L124 PetriNetUnfolderBase]: 8117/15186 cut-off events. [2023-08-03 19:49:12,084 INFO L125 PetriNetUnfolderBase]: For 205256/205880 co-relation queries the response was YES. [2023-08-03 19:49:12,140 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87568 conditions, 15186 events. 8117/15186 cut-off events. For 205256/205880 co-relation queries the response was YES. Maximal size of possible extension queue 573. Compared 120858 event pairs, 1130 based on Foata normal form. 200/15313 useless extension candidates. Maximal degree in co-relation 87514. Up to 6880 conditions per place. [2023-08-03 19:49:12,162 INFO L140 encePairwiseOnDemand]: 254/263 looper letters, 139 selfloop transitions, 46 changer transitions 9/210 dead transitions. [2023-08-03 19:49:12,162 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 210 transitions, 2139 flow [2023-08-03 19:49:12,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-03 19:49:12,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-03 19:49:12,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 889 transitions. [2023-08-03 19:49:12,164 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4828897338403042 [2023-08-03 19:49:12,164 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 889 transitions. [2023-08-03 19:49:12,164 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 889 transitions. [2023-08-03 19:49:12,164 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:49:12,164 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 889 transitions. [2023-08-03 19:49:12,165 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 127.0) internal successors, (889), 7 states have internal predecessors, (889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:49:12,166 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 263.0) internal successors, (2104), 8 states have internal predecessors, (2104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:49:12,166 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 263.0) internal successors, (2104), 8 states have internal predecessors, (2104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:49:12,166 INFO L175 Difference]: Start difference. First operand has 168 places, 145 transitions, 1297 flow. Second operand 7 states and 889 transitions. [2023-08-03 19:49:12,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 210 transitions, 2139 flow [2023-08-03 19:49:13,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 210 transitions, 1967 flow, removed 70 selfloop flow, removed 16 redundant places. [2023-08-03 19:49:13,309 INFO L231 Difference]: Finished difference. Result has 138 places, 143 transitions, 1317 flow [2023-08-03 19:49:13,309 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=263, PETRI_DIFFERENCE_MINUEND_FLOW=1163, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1317, PETRI_PLACES=138, PETRI_TRANSITIONS=143} [2023-08-03 19:49:13,310 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 84 predicate places. [2023-08-03 19:49:13,310 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 143 transitions, 1317 flow [2023-08-03 19:49:13,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 116.57142857142857) internal successors, (816), 7 states have internal predecessors, (816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:49:13,310 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:49:13,310 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:49:13,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-08-03 19:49:13,311 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:49:13,311 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:49:13,311 INFO L85 PathProgramCache]: Analyzing trace with hash 1568580443, now seen corresponding path program 1 times [2023-08-03 19:49:13,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:49:13,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522414087] [2023-08-03 19:49:13,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:49:13,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:49:13,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:49:14,328 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-08-03 19:49:14,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:49:14,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522414087] [2023-08-03 19:49:14,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522414087] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:49:14,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [113144349] [2023-08-03 19:49:14,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:49:14,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:49:14,329 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:49:14,331 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:49:14,335 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-08-03 19:49:14,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:49:14,483 INFO L262 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 16 conjunts are in the unsatisfiable core [2023-08-03 19:49:14,484 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:49:15,967 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-08-03 19:49:15,967 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:49:16,805 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-08-03 19:49:16,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [113144349] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:49:16,805 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:49:16,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-08-03 19:49:16,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511473658] [2023-08-03 19:49:16,805 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:49:16,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-03 19:49:16,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:49:16,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-03 19:49:16,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-08-03 19:49:16,923 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 263 [2023-08-03 19:49:16,923 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 143 transitions, 1317 flow. Second operand has 11 states, 11 states have (on average 118.0) internal successors, (1298), 11 states have internal predecessors, (1298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:49:16,923 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:49:16,923 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 263 [2023-08-03 19:49:16,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:49:19,125 INFO L124 PetriNetUnfolderBase]: 8120/15260 cut-off events. [2023-08-03 19:49:19,125 INFO L125 PetriNetUnfolderBase]: For 157257/158197 co-relation queries the response was YES. [2023-08-03 19:49:19,178 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85910 conditions, 15260 events. 8120/15260 cut-off events. For 157257/158197 co-relation queries the response was YES. Maximal size of possible extension queue 570. Compared 121664 event pairs, 1522 based on Foata normal form. 306/15502 useless extension candidates. Maximal degree in co-relation 85871. Up to 9112 conditions per place. [2023-08-03 19:49:19,189 INFO L140 encePairwiseOnDemand]: 254/263 looper letters, 0 selfloop transitions, 0 changer transitions 188/188 dead transitions. [2023-08-03 19:49:19,189 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 188 transitions, 1911 flow [2023-08-03 19:49:19,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-03 19:49:19,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-03 19:49:19,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 885 transitions. [2023-08-03 19:49:19,190 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48071700162954917 [2023-08-03 19:49:19,190 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 885 transitions. [2023-08-03 19:49:19,190 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 885 transitions. [2023-08-03 19:49:19,190 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:49:19,190 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 885 transitions. [2023-08-03 19:49:19,191 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 126.42857142857143) internal successors, (885), 7 states have internal predecessors, (885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:49:19,192 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 263.0) internal successors, (2104), 8 states have internal predecessors, (2104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:49:19,192 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 263.0) internal successors, (2104), 8 states have internal predecessors, (2104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:49:19,193 INFO L175 Difference]: Start difference. First operand has 138 places, 143 transitions, 1317 flow. Second operand 7 states and 885 transitions. [2023-08-03 19:49:19,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 188 transitions, 1911 flow [2023-08-03 19:49:19,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 188 transitions, 1845 flow, removed 10 selfloop flow, removed 4 redundant places. [2023-08-03 19:49:19,704 INFO L231 Difference]: Finished difference. Result has 136 places, 0 transitions, 0 flow [2023-08-03 19:49:19,705 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=263, PETRI_DIFFERENCE_MINUEND_FLOW=1252, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=136, PETRI_TRANSITIONS=0} [2023-08-03 19:49:19,705 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 82 predicate places. [2023-08-03 19:49:19,705 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 0 transitions, 0 flow [2023-08-03 19:49:19,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 118.0) internal successors, (1298), 11 states have internal predecessors, (1298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:49:19,705 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-08-03 19:49:19,706 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-08-03 19:49:19,706 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-03 19:49:19,706 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-03 19:49:19,710 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-08-03 19:49:19,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:49:19,906 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:49:19,908 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-03 19:49:19,908 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-03 19:49:19,910 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.08 07:49:19 BasicIcfg [2023-08-03 19:49:19,911 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-03 19:49:19,911 INFO L158 Benchmark]: Toolchain (without parser) took 96088.85ms. Allocated memory was 524.3MB in the beginning and 11.4GB in the end (delta: 10.9GB). Free memory was 476.5MB in the beginning and 8.3GB in the end (delta: -7.9GB). Peak memory consumption was 3.1GB. Max. memory is 16.0GB. [2023-08-03 19:49:19,911 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 350.2MB. Free memory is still 302.9MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-03 19:49:19,911 INFO L158 Benchmark]: CACSL2BoogieTranslator took 309.25ms. Allocated memory is still 524.3MB. Free memory was 476.5MB in the beginning and 465.2MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. [2023-08-03 19:49:19,911 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.94ms. Allocated memory is still 524.3MB. Free memory was 464.7MB in the beginning and 463.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 19:49:19,911 INFO L158 Benchmark]: Boogie Preprocessor took 41.58ms. Allocated memory is still 524.3MB. Free memory was 463.0MB in the beginning and 461.8MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 19:49:19,912 INFO L158 Benchmark]: RCFGBuilder took 336.43ms. Allocated memory is still 524.3MB. Free memory was 461.4MB in the beginning and 446.3MB in the end (delta: 15.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-08-03 19:49:19,912 INFO L158 Benchmark]: TraceAbstraction took 95347.03ms. Allocated memory was 524.3MB in the beginning and 11.4GB in the end (delta: 10.9GB). Free memory was 445.5MB in the beginning and 8.3GB in the end (delta: -7.9GB). Peak memory consumption was 3.0GB. Max. memory is 16.0GB. [2023-08-03 19:49:19,913 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 350.2MB. Free memory is still 302.9MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 309.25ms. Allocated memory is still 524.3MB. Free memory was 476.5MB in the beginning and 465.2MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 47.94ms. Allocated memory is still 524.3MB. Free memory was 464.7MB in the beginning and 463.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 41.58ms. Allocated memory is still 524.3MB. Free memory was 463.0MB in the beginning and 461.8MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 336.43ms. Allocated memory is still 524.3MB. Free memory was 461.4MB in the beginning and 446.3MB in the end (delta: 15.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 95347.03ms. Allocated memory was 524.3MB in the beginning and 11.4GB in the end (delta: 10.9GB). Free memory was 445.5MB in the beginning and 8.3GB in the end (delta: -7.9GB). Peak memory consumption was 3.0GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.6s, 118 PlacesBefore, 39 PlacesAfterwards, 128 TransitionsBefore, 42 TransitionsAfterwards, 1368 CoEnabledTransitionPairs, 6 FixpointIterations, 27 TrivialSequentialCompositions, 47 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 20 ConcurrentYvCompositions, 7 ChoiceCompositions, 101 TotalNumberOfCompositions, 4268 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3105, independent: 3042, independent conditional: 0, independent unconditional: 3042, dependent: 63, dependent conditional: 0, dependent unconditional: 63, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 787, independent: 775, independent conditional: 0, independent unconditional: 775, dependent: 12, dependent conditional: 0, dependent unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3105, independent: 2267, independent conditional: 0, independent unconditional: 2267, dependent: 51, dependent conditional: 0, dependent unconditional: 51, unknown: 787, unknown conditional: 0, unknown unconditional: 787] , Statistics on independence cache: Total cache size (in pairs): 78, Positive cache size: 75, Positive conditional cache size: 0, Positive unconditional cache size: 75, Negative cache size: 3, Negative conditional cache size: 0, Negative unconditional cache size: 3, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.5s, 136 PlacesBefore, 54 PlacesAfterwards, 149 TransitionsBefore, 60 TransitionsAfterwards, 3276 CoEnabledTransitionPairs, 6 FixpointIterations, 27 TrivialSequentialCompositions, 50 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 20 ConcurrentYvCompositions, 7 ChoiceCompositions, 104 TotalNumberOfCompositions, 12372 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 9089, independent: 8976, independent conditional: 0, independent unconditional: 8976, dependent: 113, dependent conditional: 0, dependent unconditional: 113, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1837, independent: 1817, independent conditional: 0, independent unconditional: 1817, dependent: 20, dependent conditional: 0, dependent unconditional: 20, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 9089, independent: 7159, independent conditional: 0, independent unconditional: 7159, dependent: 93, dependent conditional: 0, dependent unconditional: 93, unknown: 1837, unknown conditional: 0, unknown unconditional: 1837] , Statistics on independence cache: Total cache size (in pairs): 206, Positive cache size: 201, Positive conditional cache size: 0, Positive unconditional cache size: 201, Negative cache size: 5, Negative conditional cache size: 0, Negative unconditional cache size: 5, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 77]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 134 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3.1s, OverallIterations: 1, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.9s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=126occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 6 NumberOfCodeBlocks, 6 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data with 2 thread instances CFG has 10 procedures, 146 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 92.0s, OverallIterations: 21, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 58.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3595 SdHoareTripleChecker+Valid, 7.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3315 mSDsluCounter, 4451 SdHoareTripleChecker+Invalid, 6.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4347 mSDsCounter, 193 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 10746 IncrementalHoareTripleChecker+Invalid, 10939 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 193 mSolverCounterUnsat, 104 mSDtfsCounter, 10746 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1483 GetRequests, 1280 SyntacticMatches, 18 SemanticMatches, 185 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 970 ImplicationChecksByTransitivity, 8.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1317occurred in iteration=20, InterpolantAutomatonStates: 154, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 24.3s InterpolantComputationTime, 1544 NumberOfCodeBlocks, 1544 NumberOfCodeBlocksAsserted, 42 NumberOfCheckSat, 2043 ConstructedInterpolants, 0 QuantifiedInterpolants, 39167 SizeOfPredicates, 45 NumberOfNonLiveVariables, 3594 ConjunctsInSsa, 120 ConjunctsInUnsatCore, 51 InterpolantComputations, 10 PerfectInterpolantSequences, 946/1047 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-03 19:49:19,929 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...