/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.order.of.the.error.locations.to.be.checked TOGETHER -tc /storage/repos/CAV22/benchmarks/AutomizerCInline.xml -i /storage/repos/CAV22/benchmarks/increased_bounds/weaver_chl-match-symm.wvr_bound2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 19:39:42,100 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 19:39:42,150 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 19:39:42,153 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 19:39:42,154 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 19:39:42,154 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 19:39:42,154 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 19:39:42,184 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 19:39:42,185 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 19:39:42,185 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 19:39:42,186 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 19:39:42,186 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 19:39:42,186 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 19:39:42,187 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 19:39:42,187 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 19:39:42,187 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 19:39:42,188 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 19:39:42,188 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 19:39:42,188 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 19:39:42,189 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 19:39:42,189 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 19:39:42,189 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 19:39:42,190 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 19:39:42,190 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 19:39:42,190 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 19:39:42,191 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 19:39:42,191 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 19:39:42,191 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 19:39:42,192 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 19:39:42,192 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 19:39:42,192 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 19:39:42,193 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 19:39:42,193 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 19:39:42,193 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 19:39:42,193 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 19:39:42,194 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 19:39:42,194 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 19:39:42,194 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 19:39:42,195 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 19:39:42,195 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 19:39:42,195 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 19:39:42,196 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> TOGETHER [2023-08-03 19:39:42,415 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 19:39:42,443 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 19:39:42,446 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 19:39:42,448 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 19:39:42,448 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 19:39:42,449 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/weaver_chl-match-symm.wvr_bound2.c [2023-08-03 19:39:43,587 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 19:39:43,770 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 19:39:43,771 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/weaver_chl-match-symm.wvr_bound2.c [2023-08-03 19:39:43,777 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d7b1db258/5458a6b887f2473aa2555e4d23867b35/FLAGa8fc137fd [2023-08-03 19:39:43,789 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d7b1db258/5458a6b887f2473aa2555e4d23867b35 [2023-08-03 19:39:43,795 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 19:39:43,797 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 19:39:43,798 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 19:39:43,798 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 19:39:43,802 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 19:39:43,803 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 07:39:43" (1/1) ... [2023-08-03 19:39:43,804 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@85c189a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:39:43, skipping insertion in model container [2023-08-03 19:39:43,804 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 07:39:43" (1/1) ... [2023-08-03 19:39:43,825 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 19:39:43,957 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/weaver_chl-match-symm.wvr_bound2.c[2746,2759] [2023-08-03 19:39:43,960 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 19:39:43,967 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 19:39:43,987 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/weaver_chl-match-symm.wvr_bound2.c[2746,2759] [2023-08-03 19:39:43,990 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 19:39:44,013 INFO L206 MainTranslator]: Completed translation [2023-08-03 19:39:44,013 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:39:44 WrapperNode [2023-08-03 19:39:44,014 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 19:39:44,015 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 19:39:44,015 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 19:39:44,015 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 19:39:44,021 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:39:44" (1/1) ... [2023-08-03 19:39:44,028 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:39:44" (1/1) ... [2023-08-03 19:39:44,051 INFO L138 Inliner]: procedures = 22, calls = 27, calls flagged for inlining = 11, calls inlined = 17, statements flattened = 186 [2023-08-03 19:39:44,051 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 19:39:44,052 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 19:39:44,052 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 19:39:44,052 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 19:39:44,059 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:39:44" (1/1) ... [2023-08-03 19:39:44,059 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:39:44" (1/1) ... [2023-08-03 19:39:44,062 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:39:44" (1/1) ... [2023-08-03 19:39:44,062 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:39:44" (1/1) ... [2023-08-03 19:39:44,069 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:39:44" (1/1) ... [2023-08-03 19:39:44,073 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:39:44" (1/1) ... [2023-08-03 19:39:44,074 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:39:44" (1/1) ... [2023-08-03 19:39:44,075 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:39:44" (1/1) ... [2023-08-03 19:39:44,078 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 19:39:44,079 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 19:39:44,079 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 19:39:44,079 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 19:39:44,080 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:39:44" (1/1) ... [2023-08-03 19:39:44,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 19:39:44,111 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:39:44,130 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 19:39:44,138 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 19:39:44,158 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 19:39:44,158 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-03 19:39:44,158 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-03 19:39:44,158 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-03 19:39:44,158 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-03 19:39:44,159 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 19:39:44,159 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 19:39:44,159 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 19:39:44,159 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 19:39:44,159 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 19:39:44,159 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-03 19:39:44,159 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 19:39:44,161 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 19:39:44,235 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 19:39:44,237 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 19:39:44,514 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 19:39:44,523 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 19:39:44,523 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-03 19:39:44,528 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 07:39:44 BoogieIcfgContainer [2023-08-03 19:39:44,529 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 19:39:44,531 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 19:39:44,531 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 19:39:44,539 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 19:39:44,539 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 07:39:43" (1/3) ... [2023-08-03 19:39:44,540 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a3a37cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 07:39:44, skipping insertion in model container [2023-08-03 19:39:44,540 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:39:44" (2/3) ... [2023-08-03 19:39:44,540 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a3a37cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 07:39:44, skipping insertion in model container [2023-08-03 19:39:44,540 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 07:39:44" (3/3) ... [2023-08-03 19:39:44,541 INFO L112 eAbstractionObserver]: Analyzing ICFG weaver_chl-match-symm.wvr_bound2.c [2023-08-03 19:39:44,549 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 19:39:44,558 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 19:39:44,558 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-03 19:39:44,558 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 19:39:44,666 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-03 19:39:44,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 201 places, 215 transitions, 452 flow [2023-08-03 19:39:44,839 INFO L124 PetriNetUnfolderBase]: 46/428 cut-off events. [2023-08-03 19:39:44,839 INFO L125 PetriNetUnfolderBase]: For 8/16 co-relation queries the response was YES. [2023-08-03 19:39:44,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 448 conditions, 428 events. 46/428 cut-off events. For 8/16 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1603 event pairs, 0 based on Foata normal form. 0/370 useless extension candidates. Maximal degree in co-relation 216. Up to 8 conditions per place. [2023-08-03 19:39:44,852 INFO L82 GeneralOperation]: Start removeDead. Operand has 201 places, 215 transitions, 452 flow [2023-08-03 19:39:44,870 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 201 places, 215 transitions, 452 flow [2023-08-03 19:39:44,873 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 19:39:44,881 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 201 places, 215 transitions, 452 flow [2023-08-03 19:39:44,884 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 201 places, 215 transitions, 452 flow [2023-08-03 19:39:44,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 201 places, 215 transitions, 452 flow [2023-08-03 19:39:44,987 INFO L124 PetriNetUnfolderBase]: 46/428 cut-off events. [2023-08-03 19:39:44,988 INFO L125 PetriNetUnfolderBase]: For 8/16 co-relation queries the response was YES. [2023-08-03 19:39:44,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 448 conditions, 428 events. 46/428 cut-off events. For 8/16 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1603 event pairs, 0 based on Foata normal form. 0/370 useless extension candidates. Maximal degree in co-relation 216. Up to 8 conditions per place. [2023-08-03 19:39:45,007 INFO L119 LiptonReduction]: Number of co-enabled transitions 17014 [2023-08-03 19:39:50,531 INFO L134 LiptonReduction]: Checked pairs total: 16783 [2023-08-03 19:39:50,531 INFO L136 LiptonReduction]: Total number of compositions: 234 [2023-08-03 19:39:50,546 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 19:39:50,552 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;@5633d976, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 19:39:50,552 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-03 19:39:50,556 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 19:39:50,556 INFO L124 PetriNetUnfolderBase]: 1/20 cut-off events. [2023-08-03 19:39:50,556 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 19:39:50,557 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:39:50,557 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-03 19:39:50,558 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 19:39:50,562 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:39:50,562 INFO L85 PathProgramCache]: Analyzing trace with hash -130577394, now seen corresponding path program 1 times [2023-08-03 19:39:50,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:39:50,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693148186] [2023-08-03 19:39:50,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:39:50,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:39:50,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:39:50,757 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 19:39:50,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:39:50,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693148186] [2023-08-03 19:39:50,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693148186] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:39:50,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 19:39:50,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 19:39:50,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329416775] [2023-08-03 19:39:50,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:39:50,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 19:39:50,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:39:50,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 19:39:50,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 19:39:50,809 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 449 [2023-08-03 19:39:50,814 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 30 transitions, 82 flow. Second operand has 3 states, 3 states have (on average 190.66666666666666) internal successors, (572), 3 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:39:50,815 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:39:50,815 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 449 [2023-08-03 19:39:50,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:39:50,890 INFO L124 PetriNetUnfolderBase]: 69/191 cut-off events. [2023-08-03 19:39:50,891 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2023-08-03 19:39:50,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 385 conditions, 191 events. 69/191 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 737 event pairs, 27 based on Foata normal form. 9/174 useless extension candidates. Maximal degree in co-relation 270. Up to 163 conditions per place. [2023-08-03 19:39:50,893 INFO L140 encePairwiseOnDemand]: 444/449 looper letters, 23 selfloop transitions, 2 changer transitions 0/30 dead transitions. [2023-08-03 19:39:50,893 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 30 transitions, 132 flow [2023-08-03 19:39:50,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 19:39:50,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 19:39:50,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 595 transitions. [2023-08-03 19:39:50,915 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4417223459539718 [2023-08-03 19:39:50,916 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 595 transitions. [2023-08-03 19:39:50,916 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 595 transitions. [2023-08-03 19:39:50,919 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:39:50,922 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 595 transitions. [2023-08-03 19:39:50,927 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 198.33333333333334) internal successors, (595), 3 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:39:50,934 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 449.0) internal successors, (1796), 4 states have internal predecessors, (1796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:39:50,935 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 449.0) internal successors, (1796), 4 states have internal predecessors, (1796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:39:50,937 INFO L175 Difference]: Start difference. First operand has 30 places, 30 transitions, 82 flow. Second operand 3 states and 595 transitions. [2023-08-03 19:39:50,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 30 transitions, 132 flow [2023-08-03 19:39:50,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 30 transitions, 132 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 19:39:50,944 INFO L231 Difference]: Finished difference. Result has 32 places, 28 transitions, 86 flow [2023-08-03 19:39:50,945 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=449, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=86, PETRI_PLACES=32, PETRI_TRANSITIONS=28} [2023-08-03 19:39:50,950 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 2 predicate places. [2023-08-03 19:39:50,950 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 28 transitions, 86 flow [2023-08-03 19:39:50,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 190.66666666666666) internal successors, (572), 3 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:39:50,951 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:39:50,952 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-03 19:39:50,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 19:39:50,952 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 19:39:50,954 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:39:50,954 INFO L85 PathProgramCache]: Analyzing trace with hash -54955259, now seen corresponding path program 1 times [2023-08-03 19:39:50,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:39:50,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392441093] [2023-08-03 19:39:50,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:39:50,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:39:51,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 19:39:51,006 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 19:39:51,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 19:39:51,044 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 19:39:51,044 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 19:39:51,046 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2023-08-03 19:39:51,047 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2023-08-03 19:39:51,047 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-08-03 19:39:51,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-03 19:39:51,048 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-03 19:39:51,050 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 19:39:51,050 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 19:39:51,100 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-08-03 19:39:51,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 293 places, 315 transitions, 678 flow [2023-08-03 19:39:51,356 INFO L124 PetriNetUnfolderBase]: 181/1332 cut-off events. [2023-08-03 19:39:51,356 INFO L125 PetriNetUnfolderBase]: For 72/128 co-relation queries the response was YES. [2023-08-03 19:39:51,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1429 conditions, 1332 events. 181/1332 cut-off events. For 72/128 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 7587 event pairs, 1 based on Foata normal form. 0/1130 useless extension candidates. Maximal degree in co-relation 783. Up to 32 conditions per place. [2023-08-03 19:39:51,372 INFO L82 GeneralOperation]: Start removeDead. Operand has 293 places, 315 transitions, 678 flow [2023-08-03 19:39:51,380 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 293 places, 315 transitions, 678 flow [2023-08-03 19:39:51,380 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 19:39:51,380 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 293 places, 315 transitions, 678 flow [2023-08-03 19:39:51,381 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 293 places, 315 transitions, 678 flow [2023-08-03 19:39:51,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 293 places, 315 transitions, 678 flow [2023-08-03 19:39:51,567 INFO L124 PetriNetUnfolderBase]: 181/1332 cut-off events. [2023-08-03 19:39:51,567 INFO L125 PetriNetUnfolderBase]: For 72/128 co-relation queries the response was YES. [2023-08-03 19:39:51,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1429 conditions, 1332 events. 181/1332 cut-off events. For 72/128 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 7587 event pairs, 1 based on Foata normal form. 0/1130 useless extension candidates. Maximal degree in co-relation 783. Up to 32 conditions per place. [2023-08-03 19:39:51,650 INFO L119 LiptonReduction]: Number of co-enabled transitions 53580 [2023-08-03 19:39:59,076 INFO L134 LiptonReduction]: Checked pairs total: 56826 [2023-08-03 19:39:59,076 INFO L136 LiptonReduction]: Total number of compositions: 364 [2023-08-03 19:39:59,078 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 19:39:59,079 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;@5633d976, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 19:39:59,079 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-03 19:39:59,081 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 19:39:59,081 INFO L124 PetriNetUnfolderBase]: 1/19 cut-off events. [2023-08-03 19:39:59,081 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 19:39:59,082 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:39:59,082 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-03 19:39:59,082 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 19:39:59,082 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:39:59,082 INFO L85 PathProgramCache]: Analyzing trace with hash 1155747572, now seen corresponding path program 1 times [2023-08-03 19:39:59,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:39:59,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334126461] [2023-08-03 19:39:59,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:39:59,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:39:59,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:39:59,119 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 19:39:59,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:39:59,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334126461] [2023-08-03 19:39:59,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334126461] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:39:59,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 19:39:59,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 19:39:59,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235142779] [2023-08-03 19:39:59,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:39:59,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 19:39:59,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:39:59,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 19:39:59,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 19:39:59,130 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 679 [2023-08-03 19:39:59,131 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 40 transitions, 128 flow. Second operand has 3 states, 3 states have (on average 277.0) internal successors, (831), 3 states have internal predecessors, (831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:39:59,131 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:39:59,131 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 679 [2023-08-03 19:39:59,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:39:59,453 INFO L124 PetriNetUnfolderBase]: 1377/2446 cut-off events. [2023-08-03 19:39:59,454 INFO L125 PetriNetUnfolderBase]: For 370/370 co-relation queries the response was YES. [2023-08-03 19:39:59,458 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5047 conditions, 2446 events. 1377/2446 cut-off events. For 370/370 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 12906 event pairs, 884 based on Foata normal form. 0/2234 useless extension candidates. Maximal degree in co-relation 1952. Up to 2292 conditions per place. [2023-08-03 19:39:59,467 INFO L140 encePairwiseOnDemand]: 674/679 looper letters, 33 selfloop transitions, 2 changer transitions 0/41 dead transitions. [2023-08-03 19:39:59,468 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 41 transitions, 200 flow [2023-08-03 19:39:59,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 19:39:59,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 19:39:59,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 863 transitions. [2023-08-03 19:39:59,470 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42366224840451644 [2023-08-03 19:39:59,470 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 863 transitions. [2023-08-03 19:39:59,470 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 863 transitions. [2023-08-03 19:39:59,471 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:39:59,471 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 863 transitions. [2023-08-03 19:39:59,473 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 287.6666666666667) internal successors, (863), 3 states have internal predecessors, (863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:39:59,476 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 679.0) internal successors, (2716), 4 states have internal predecessors, (2716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:39:59,477 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 679.0) internal successors, (2716), 4 states have internal predecessors, (2716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:39:59,478 INFO L175 Difference]: Start difference. First operand has 40 places, 40 transitions, 128 flow. Second operand 3 states and 863 transitions. [2023-08-03 19:39:59,478 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 41 transitions, 200 flow [2023-08-03 19:39:59,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 41 transitions, 200 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 19:39:59,483 INFO L231 Difference]: Finished difference. Result has 42 places, 39 transitions, 136 flow [2023-08-03 19:39:59,483 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=679, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=136, PETRI_PLACES=42, PETRI_TRANSITIONS=39} [2023-08-03 19:39:59,484 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 2 predicate places. [2023-08-03 19:39:59,484 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 39 transitions, 136 flow [2023-08-03 19:39:59,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 277.0) internal successors, (831), 3 states have internal predecessors, (831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:39:59,485 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:39:59,485 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-03 19:39:59,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-03 19:39:59,485 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 19:39:59,485 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:39:59,485 INFO L85 PathProgramCache]: Analyzing trace with hash 211444645, now seen corresponding path program 1 times [2023-08-03 19:39:59,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:39:59,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614382948] [2023-08-03 19:39:59,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:39:59,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:39:59,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:39:59,608 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 19:39:59,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:39:59,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614382948] [2023-08-03 19:39:59,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614382948] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:39:59,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [602085560] [2023-08-03 19:39:59,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:39:59,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:39:59,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:39:59,617 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 19:39:59,648 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 19:39:59,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:39:59,706 INFO L262 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 19:39:59,708 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:39:59,767 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 19:39:59,768 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:39:59,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [602085560] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:39:59,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 19:39:59,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-08-03 19:39:59,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143988091] [2023-08-03 19:39:59,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:39:59,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:39:59,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:39:59,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:39:59,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 19:39:59,789 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 679 [2023-08-03 19:39:59,790 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 39 transitions, 136 flow. Second operand has 5 states, 5 states have (on average 275.6) internal successors, (1378), 5 states have internal predecessors, (1378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:39:59,791 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:39:59,791 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 679 [2023-08-03 19:39:59,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:40:00,149 INFO L124 PetriNetUnfolderBase]: 1373/2438 cut-off events. [2023-08-03 19:40:00,149 INFO L125 PetriNetUnfolderBase]: For 364/364 co-relation queries the response was YES. [2023-08-03 19:40:00,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5044 conditions, 2438 events. 1373/2438 cut-off events. For 364/364 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 12824 event pairs, 586 based on Foata normal form. 4/2238 useless extension candidates. Maximal degree in co-relation 2884. Up to 2271 conditions per place. [2023-08-03 19:40:00,163 INFO L140 encePairwiseOnDemand]: 675/679 looper letters, 34 selfloop transitions, 4 changer transitions 0/43 dead transitions. [2023-08-03 19:40:00,163 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 43 transitions, 218 flow [2023-08-03 19:40:00,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 19:40:00,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 19:40:00,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1409 transitions. [2023-08-03 19:40:00,168 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41502209131075113 [2023-08-03 19:40:00,168 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1409 transitions. [2023-08-03 19:40:00,168 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1409 transitions. [2023-08-03 19:40:00,169 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:40:00,169 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1409 transitions. [2023-08-03 19:40:00,171 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 281.8) internal successors, (1409), 5 states have internal predecessors, (1409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:40:00,176 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 679.0) internal successors, (4074), 6 states have internal predecessors, (4074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:40:00,177 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 679.0) internal successors, (4074), 6 states have internal predecessors, (4074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:40:00,177 INFO L175 Difference]: Start difference. First operand has 42 places, 39 transitions, 136 flow. Second operand 5 states and 1409 transitions. [2023-08-03 19:40:00,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 43 transitions, 218 flow [2023-08-03 19:40:00,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 43 transitions, 210 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-03 19:40:00,182 INFO L231 Difference]: Finished difference. Result has 44 places, 39 transitions, 143 flow [2023-08-03 19:40:00,182 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=679, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=143, PETRI_PLACES=44, PETRI_TRANSITIONS=39} [2023-08-03 19:40:00,185 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 4 predicate places. [2023-08-03 19:40:00,185 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 39 transitions, 143 flow [2023-08-03 19:40:00,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 275.6) internal successors, (1378), 5 states have internal predecessors, (1378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:40:00,186 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:40:00,186 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:40:00,196 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 19:40:00,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:40:00,394 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 19:40:00,394 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:40:00,394 INFO L85 PathProgramCache]: Analyzing trace with hash -1802540349, now seen corresponding path program 1 times [2023-08-03 19:40:00,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:40:00,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908141028] [2023-08-03 19:40:00,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:40:00,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:40:00,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:40:00,471 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 19:40:00,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:40:00,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908141028] [2023-08-03 19:40:00,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908141028] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:40:00,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1868841097] [2023-08-03 19:40:00,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:40:00,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:40:00,474 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:40:00,478 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:40:00,505 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-03 19:40:00,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:40:00,550 INFO L262 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 19:40:00,551 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:40:00,557 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-03 19:40:00,557 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:40:00,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1868841097] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:40:00,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 19:40:00,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-03 19:40:00,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117903440] [2023-08-03 19:40:00,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:40:00,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 19:40:00,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:40:00,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 19:40:00,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:40:00,567 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 679 [2023-08-03 19:40:00,569 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 39 transitions, 143 flow. Second operand has 3 states, 3 states have (on average 278.6666666666667) internal successors, (836), 3 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:40:00,569 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:40:00,569 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 679 [2023-08-03 19:40:00,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:40:00,912 INFO L124 PetriNetUnfolderBase]: 1367/2444 cut-off events. [2023-08-03 19:40:00,912 INFO L125 PetriNetUnfolderBase]: For 292/292 co-relation queries the response was YES. [2023-08-03 19:40:00,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5009 conditions, 2444 events. 1367/2444 cut-off events. For 292/292 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 12972 event pairs, 883 based on Foata normal form. 0/2246 useless extension candidates. Maximal degree in co-relation 2076. Up to 2238 conditions per place. [2023-08-03 19:40:00,924 INFO L140 encePairwiseOnDemand]: 676/679 looper letters, 36 selfloop transitions, 3 changer transitions 0/44 dead transitions. [2023-08-03 19:40:00,925 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 44 transitions, 231 flow [2023-08-03 19:40:00,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 19:40:00,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 19:40:00,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 863 transitions. [2023-08-03 19:40:00,927 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42366224840451644 [2023-08-03 19:40:00,927 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 863 transitions. [2023-08-03 19:40:00,928 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 863 transitions. [2023-08-03 19:40:00,928 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:40:00,928 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 863 transitions. [2023-08-03 19:40:00,931 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 287.6666666666667) internal successors, (863), 3 states have internal predecessors, (863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:40:00,934 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 679.0) internal successors, (2716), 4 states have internal predecessors, (2716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:40:00,935 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 679.0) internal successors, (2716), 4 states have internal predecessors, (2716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:40:00,935 INFO L175 Difference]: Start difference. First operand has 44 places, 39 transitions, 143 flow. Second operand 3 states and 863 transitions. [2023-08-03 19:40:00,935 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 44 transitions, 231 flow [2023-08-03 19:40:00,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 44 transitions, 224 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-03 19:40:00,940 INFO L231 Difference]: Finished difference. Result has 45 places, 40 transitions, 151 flow [2023-08-03 19:40:00,940 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=679, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=151, PETRI_PLACES=45, PETRI_TRANSITIONS=40} [2023-08-03 19:40:00,941 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 5 predicate places. [2023-08-03 19:40:00,941 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 40 transitions, 151 flow [2023-08-03 19:40:00,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 278.6666666666667) internal successors, (836), 3 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:40:00,942 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:40:00,942 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:40:00,949 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 19:40:01,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:40:01,147 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 19:40:01,148 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:40:01,148 INFO L85 PathProgramCache]: Analyzing trace with hash -783648855, now seen corresponding path program 1 times [2023-08-03 19:40:01,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:40:01,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021411136] [2023-08-03 19:40:01,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:40:01,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:40:01,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:40:01,210 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-03 19:40:01,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:40:01,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021411136] [2023-08-03 19:40:01,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021411136] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:40:01,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1885969936] [2023-08-03 19:40:01,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:40:01,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:40:01,211 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:40:01,216 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:40:01,218 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-03 19:40:01,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:40:01,283 INFO L262 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 19:40:01,284 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:40:01,302 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-03 19:40:01,303 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:40:01,320 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-03 19:40:01,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1885969936] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:40:01,321 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:40:01,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-03 19:40:01,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114782895] [2023-08-03 19:40:01,323 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:40:01,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:40:01,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:40:01,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:40:01,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:40:01,341 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 679 [2023-08-03 19:40:01,343 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 40 transitions, 151 flow. Second operand has 5 states, 5 states have (on average 276.6) internal successors, (1383), 5 states have internal predecessors, (1383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:40:01,343 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:40:01,343 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 679 [2023-08-03 19:40:01,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:40:01,654 INFO L124 PetriNetUnfolderBase]: 1311/2338 cut-off events. [2023-08-03 19:40:01,654 INFO L125 PetriNetUnfolderBase]: For 278/278 co-relation queries the response was YES. [2023-08-03 19:40:01,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4833 conditions, 2338 events. 1311/2338 cut-off events. For 278/278 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 12075 event pairs, 580 based on Foata normal form. 2/2178 useless extension candidates. Maximal degree in co-relation 1997. Up to 2170 conditions per place. [2023-08-03 19:40:01,670 INFO L140 encePairwiseOnDemand]: 676/679 looper letters, 35 selfloop transitions, 3 changer transitions 0/43 dead transitions. [2023-08-03 19:40:01,670 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 43 transitions, 228 flow [2023-08-03 19:40:01,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 19:40:01,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 19:40:01,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1134 transitions. [2023-08-03 19:40:01,673 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4175257731958763 [2023-08-03 19:40:01,673 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1134 transitions. [2023-08-03 19:40:01,673 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1134 transitions. [2023-08-03 19:40:01,674 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:40:01,674 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1134 transitions. [2023-08-03 19:40:01,676 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 283.5) internal successors, (1134), 4 states have internal predecessors, (1134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:40:01,680 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 679.0) internal successors, (3395), 5 states have internal predecessors, (3395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:40:01,681 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 679.0) internal successors, (3395), 5 states have internal predecessors, (3395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:40:01,682 INFO L175 Difference]: Start difference. First operand has 45 places, 40 transitions, 151 flow. Second operand 4 states and 1134 transitions. [2023-08-03 19:40:01,682 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 43 transitions, 228 flow [2023-08-03 19:40:01,683 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 43 transitions, 226 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 19:40:01,684 INFO L231 Difference]: Finished difference. Result has 47 places, 39 transitions, 146 flow [2023-08-03 19:40:01,684 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=679, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=146, PETRI_PLACES=47, PETRI_TRANSITIONS=39} [2023-08-03 19:40:01,687 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 7 predicate places. [2023-08-03 19:40:01,687 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 39 transitions, 146 flow [2023-08-03 19:40:01,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 276.6) internal successors, (1383), 5 states have internal predecessors, (1383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:40:01,688 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:40:01,688 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:40:01,695 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-08-03 19:40:01,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:40:01,894 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 19:40:01,894 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:40:01,894 INFO L85 PathProgramCache]: Analyzing trace with hash -640483007, now seen corresponding path program 1 times [2023-08-03 19:40:01,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:40:01,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791472750] [2023-08-03 19:40:01,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:40:01,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:40:01,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:40:01,974 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 19:40:01,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:40:01,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791472750] [2023-08-03 19:40:01,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791472750] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:40:01,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [668257130] [2023-08-03 19:40:01,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:40:01,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:40:01,979 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:40:01,981 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:40:02,006 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-03 19:40:02,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:40:02,055 INFO L262 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 19:40:02,056 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:40:02,073 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 19:40:02,073 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:40:02,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [668257130] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:40:02,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 19:40:02,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2023-08-03 19:40:02,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626795822] [2023-08-03 19:40:02,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:40:02,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:40:02,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:40:02,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:40:02,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 19:40:02,088 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 679 [2023-08-03 19:40:02,089 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 39 transitions, 146 flow. Second operand has 5 states, 5 states have (on average 276.6) internal successors, (1383), 5 states have internal predecessors, (1383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:40:02,089 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:40:02,089 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 679 [2023-08-03 19:40:02,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:40:02,398 INFO L124 PetriNetUnfolderBase]: 1279/2282 cut-off events. [2023-08-03 19:40:02,398 INFO L125 PetriNetUnfolderBase]: For 246/246 co-relation queries the response was YES. [2023-08-03 19:40:02,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4712 conditions, 2282 events. 1279/2282 cut-off events. For 246/246 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 11838 event pairs, 32 based on Foata normal form. 16/2136 useless extension candidates. Maximal degree in co-relation 2720. Up to 2001 conditions per place. [2023-08-03 19:40:02,409 INFO L140 encePairwiseOnDemand]: 675/679 looper letters, 41 selfloop transitions, 4 changer transitions 0/49 dead transitions. [2023-08-03 19:40:02,409 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 49 transitions, 254 flow [2023-08-03 19:40:02,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 19:40:02,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 19:40:02,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1415 transitions. [2023-08-03 19:40:02,413 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4167893961708395 [2023-08-03 19:40:02,413 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1415 transitions. [2023-08-03 19:40:02,413 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1415 transitions. [2023-08-03 19:40:02,414 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:40:02,414 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1415 transitions. [2023-08-03 19:40:02,416 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 283.0) internal successors, (1415), 5 states have internal predecessors, (1415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:40:02,421 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 679.0) internal successors, (4074), 6 states have internal predecessors, (4074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:40:02,421 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 679.0) internal successors, (4074), 6 states have internal predecessors, (4074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:40:02,421 INFO L175 Difference]: Start difference. First operand has 47 places, 39 transitions, 146 flow. Second operand 5 states and 1415 transitions. [2023-08-03 19:40:02,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 49 transitions, 254 flow [2023-08-03 19:40:02,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 49 transitions, 242 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-03 19:40:02,424 INFO L231 Difference]: Finished difference. Result has 47 places, 39 transitions, 149 flow [2023-08-03 19:40:02,424 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=679, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=149, PETRI_PLACES=47, PETRI_TRANSITIONS=39} [2023-08-03 19:40:02,424 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 7 predicate places. [2023-08-03 19:40:02,424 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 39 transitions, 149 flow [2023-08-03 19:40:02,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 276.6) internal successors, (1383), 5 states have internal predecessors, (1383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:40:02,425 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:40:02,425 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 19:40:02,433 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 19:40:02,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:40:02,633 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 19:40:02,633 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:40:02,633 INFO L85 PathProgramCache]: Analyzing trace with hash 1578633089, now seen corresponding path program 1 times [2023-08-03 19:40:02,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:40:02,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42305199] [2023-08-03 19:40:02,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:40:02,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:40:02,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:40:02,691 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 19:40:02,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:40:02,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42305199] [2023-08-03 19:40:02,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42305199] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:40:02,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1702088596] [2023-08-03 19:40:02,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:40:02,691 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:40:02,691 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:40:02,693 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:40:02,697 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-03 19:40:02,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:40:02,762 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 19:40:02,763 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:40:02,776 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 19:40:02,776 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:40:02,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1702088596] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:40:02,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 19:40:02,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-08-03 19:40:02,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246357261] [2023-08-03 19:40:02,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:40:02,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 19:40:02,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:40:02,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 19:40:02,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:40:02,788 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 679 [2023-08-03 19:40:02,789 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 39 transitions, 149 flow. Second operand has 3 states, 3 states have (on average 280.0) internal successors, (840), 3 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:40:02,789 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:40:02,789 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 679 [2023-08-03 19:40:02,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:40:03,114 INFO L124 PetriNetUnfolderBase]: 1047/1930 cut-off events. [2023-08-03 19:40:03,115 INFO L125 PetriNetUnfolderBase]: For 346/346 co-relation queries the response was YES. [2023-08-03 19:40:03,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4040 conditions, 1930 events. 1047/1930 cut-off events. For 346/346 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 9872 event pairs, 771 based on Foata normal form. 0/1800 useless extension candidates. Maximal degree in co-relation 2406. Up to 1566 conditions per place. [2023-08-03 19:40:03,124 INFO L140 encePairwiseOnDemand]: 676/679 looper letters, 42 selfloop transitions, 3 changer transitions 0/49 dead transitions. [2023-08-03 19:40:03,124 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 49 transitions, 267 flow [2023-08-03 19:40:03,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 19:40:03,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 19:40:03,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 868 transitions. [2023-08-03 19:40:03,127 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4261168384879725 [2023-08-03 19:40:03,127 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 868 transitions. [2023-08-03 19:40:03,127 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 868 transitions. [2023-08-03 19:40:03,128 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:40:03,128 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 868 transitions. [2023-08-03 19:40:03,130 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 289.3333333333333) internal successors, (868), 3 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:40:03,133 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 679.0) internal successors, (2716), 4 states have internal predecessors, (2716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:40:03,134 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 679.0) internal successors, (2716), 4 states have internal predecessors, (2716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:40:03,134 INFO L175 Difference]: Start difference. First operand has 47 places, 39 transitions, 149 flow. Second operand 3 states and 868 transitions. [2023-08-03 19:40:03,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 49 transitions, 267 flow [2023-08-03 19:40:03,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 49 transitions, 260 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-03 19:40:03,136 INFO L231 Difference]: Finished difference. Result has 48 places, 40 transitions, 157 flow [2023-08-03 19:40:03,136 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=679, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=157, PETRI_PLACES=48, PETRI_TRANSITIONS=40} [2023-08-03 19:40:03,137 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 8 predicate places. [2023-08-03 19:40:03,137 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 40 transitions, 157 flow [2023-08-03 19:40:03,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 280.0) internal successors, (840), 3 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:40:03,137 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:40:03,138 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:40:03,147 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-03 19:40:03,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:40:03,343 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 19:40:03,343 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:40:03,343 INFO L85 PathProgramCache]: Analyzing trace with hash 1701987979, now seen corresponding path program 1 times [2023-08-03 19:40:03,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:40:03,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619226179] [2023-08-03 19:40:03,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:40:03,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:40:03,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:40:03,393 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-03 19:40:03,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:40:03,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619226179] [2023-08-03 19:40:03,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619226179] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:40:03,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1811387867] [2023-08-03 19:40:03,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:40:03,394 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:40:03,395 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:40:03,396 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:40:03,422 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-03 19:40:03,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:40:03,485 INFO L262 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 19:40:03,486 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:40:03,493 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-03 19:40:03,493 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:40:03,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1811387867] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:40:03,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 19:40:03,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-08-03 19:40:03,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478077064] [2023-08-03 19:40:03,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:40:03,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 19:40:03,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:40:03,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 19:40:03,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:40:03,504 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 679 [2023-08-03 19:40:03,505 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 40 transitions, 157 flow. Second operand has 3 states, 3 states have (on average 281.3333333333333) internal successors, (844), 3 states have internal predecessors, (844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:40:03,505 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:40:03,505 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 679 [2023-08-03 19:40:03,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:40:03,762 INFO L124 PetriNetUnfolderBase]: 910/1749 cut-off events. [2023-08-03 19:40:03,762 INFO L125 PetriNetUnfolderBase]: For 461/461 co-relation queries the response was YES. [2023-08-03 19:40:03,766 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3866 conditions, 1749 events. 910/1749 cut-off events. For 461/461 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 8946 event pairs, 640 based on Foata normal form. 0/1716 useless extension candidates. Maximal degree in co-relation 2397. Up to 1230 conditions per place. [2023-08-03 19:40:03,772 INFO L140 encePairwiseOnDemand]: 676/679 looper letters, 44 selfloop transitions, 2 changer transitions 0/50 dead transitions. [2023-08-03 19:40:03,772 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 50 transitions, 277 flow [2023-08-03 19:40:03,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 19:40:03,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 19:40:03,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 868 transitions. [2023-08-03 19:40:03,775 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4261168384879725 [2023-08-03 19:40:03,775 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 868 transitions. [2023-08-03 19:40:03,775 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 868 transitions. [2023-08-03 19:40:03,775 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:40:03,775 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 868 transitions. [2023-08-03 19:40:03,778 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 289.3333333333333) internal successors, (868), 3 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:40:03,781 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 679.0) internal successors, (2716), 4 states have internal predecessors, (2716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:40:03,782 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 679.0) internal successors, (2716), 4 states have internal predecessors, (2716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:40:03,782 INFO L175 Difference]: Start difference. First operand has 48 places, 40 transitions, 157 flow. Second operand 3 states and 868 transitions. [2023-08-03 19:40:03,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 50 transitions, 277 flow [2023-08-03 19:40:03,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 50 transitions, 274 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 19:40:03,785 INFO L231 Difference]: Finished difference. Result has 50 places, 41 transitions, 166 flow [2023-08-03 19:40:03,785 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=679, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=166, PETRI_PLACES=50, PETRI_TRANSITIONS=41} [2023-08-03 19:40:03,786 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 10 predicate places. [2023-08-03 19:40:03,786 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 41 transitions, 166 flow [2023-08-03 19:40:03,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 281.3333333333333) internal successors, (844), 3 states have internal predecessors, (844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:40:03,787 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:40:03,787 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:40:03,792 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-08-03 19:40:03,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:40:03,993 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 19:40:03,993 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:40:03,993 INFO L85 PathProgramCache]: Analyzing trace with hash -417957154, now seen corresponding path program 1 times [2023-08-03 19:40:03,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:40:03,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357832409] [2023-08-03 19:40:03,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:40:03,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:40:04,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:40:04,081 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-03 19:40:04,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:40:04,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357832409] [2023-08-03 19:40:04,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357832409] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:40:04,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [958909629] [2023-08-03 19:40:04,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:40:04,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:40:04,082 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:40:04,083 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:40:04,086 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-03 19:40:04,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:40:04,166 INFO L262 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 19:40:04,167 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:40:04,185 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-03 19:40:04,186 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:40:04,198 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-03 19:40:04,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [958909629] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:40:04,198 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:40:04,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-03 19:40:04,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511529987] [2023-08-03 19:40:04,199 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:40:04,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:40:04,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:40:04,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:40:04,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:40:04,211 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 679 [2023-08-03 19:40:04,212 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 41 transitions, 166 flow. Second operand has 5 states, 5 states have (on average 279.4) internal successors, (1397), 5 states have internal predecessors, (1397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:40:04,213 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:40:04,213 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 679 [2023-08-03 19:40:04,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:40:04,444 INFO L124 PetriNetUnfolderBase]: 862/1661 cut-off events. [2023-08-03 19:40:04,444 INFO L125 PetriNetUnfolderBase]: For 408/408 co-relation queries the response was YES. [2023-08-03 19:40:04,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3788 conditions, 1661 events. 862/1661 cut-off events. For 408/408 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 8188 event pairs, 398 based on Foata normal form. 8/1669 useless extension candidates. Maximal degree in co-relation 2391. Up to 1428 conditions per place. [2023-08-03 19:40:04,453 INFO L140 encePairwiseOnDemand]: 676/679 looper letters, 41 selfloop transitions, 3 changer transitions 0/48 dead transitions. [2023-08-03 19:40:04,453 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 48 transitions, 264 flow [2023-08-03 19:40:04,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 19:40:04,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 19:40:04,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1138 transitions. [2023-08-03 19:40:04,456 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41899852724594994 [2023-08-03 19:40:04,457 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1138 transitions. [2023-08-03 19:40:04,457 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1138 transitions. [2023-08-03 19:40:04,457 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:40:04,457 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1138 transitions. [2023-08-03 19:40:04,459 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 284.5) internal successors, (1138), 4 states have internal predecessors, (1138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:40:04,463 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 679.0) internal successors, (3395), 5 states have internal predecessors, (3395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:40:04,464 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 679.0) internal successors, (3395), 5 states have internal predecessors, (3395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:40:04,464 INFO L175 Difference]: Start difference. First operand has 50 places, 41 transitions, 166 flow. Second operand 4 states and 1138 transitions. [2023-08-03 19:40:04,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 48 transitions, 264 flow [2023-08-03 19:40:04,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 48 transitions, 262 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 19:40:04,471 INFO L231 Difference]: Finished difference. Result has 52 places, 40 transitions, 162 flow [2023-08-03 19:40:04,471 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=679, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=162, PETRI_PLACES=52, PETRI_TRANSITIONS=40} [2023-08-03 19:40:04,472 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 12 predicate places. [2023-08-03 19:40:04,472 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 40 transitions, 162 flow [2023-08-03 19:40:04,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 279.4) internal successors, (1397), 5 states have internal predecessors, (1397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:40:04,472 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:40:04,473 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] [2023-08-03 19:40:04,481 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-03 19:40:04,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:40:04,681 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 19:40:04,682 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:40:04,682 INFO L85 PathProgramCache]: Analyzing trace with hash 2079675525, now seen corresponding path program 1 times [2023-08-03 19:40:04,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:40:04,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947203528] [2023-08-03 19:40:04,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:40:04,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:40:04,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:40:04,755 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-08-03 19:40:04,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:40:04,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947203528] [2023-08-03 19:40:04,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947203528] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:40:04,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1771691395] [2023-08-03 19:40:04,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:40:04,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:40:04,756 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:40:04,758 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:40:04,772 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-03 19:40:04,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:40:04,855 INFO L262 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 19:40:04,856 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:40:04,869 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-08-03 19:40:04,869 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:40:04,884 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-08-03 19:40:04,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1771691395] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:40:04,885 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:40:04,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-03 19:40:04,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385003168] [2023-08-03 19:40:04,885 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:40:04,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:40:04,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:40:04,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:40:04,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:40:04,897 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 679 [2023-08-03 19:40:04,899 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 40 transitions, 162 flow. Second operand has 5 states, 5 states have (on average 279.6) internal successors, (1398), 5 states have internal predecessors, (1398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:40:04,899 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:40:04,899 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 679 [2023-08-03 19:40:04,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:40:05,080 INFO L124 PetriNetUnfolderBase]: 546/1073 cut-off events. [2023-08-03 19:40:05,080 INFO L125 PetriNetUnfolderBase]: For 399/399 co-relation queries the response was YES. [2023-08-03 19:40:05,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2483 conditions, 1073 events. 546/1073 cut-off events. For 399/399 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 4518 event pairs, 227 based on Foata normal form. 32/1105 useless extension candidates. Maximal degree in co-relation 1885. Up to 483 conditions per place. [2023-08-03 19:40:05,086 INFO L140 encePairwiseOnDemand]: 675/679 looper letters, 46 selfloop transitions, 4 changer transitions 0/54 dead transitions. [2023-08-03 19:40:05,086 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 54 transitions, 298 flow [2023-08-03 19:40:05,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 19:40:05,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 19:40:05,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1144 transitions. [2023-08-03 19:40:05,089 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4212076583210604 [2023-08-03 19:40:05,089 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1144 transitions. [2023-08-03 19:40:05,089 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1144 transitions. [2023-08-03 19:40:05,090 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:40:05,090 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1144 transitions. [2023-08-03 19:40:05,092 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 286.0) internal successors, (1144), 4 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:40:05,095 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 679.0) internal successors, (3395), 5 states have internal predecessors, (3395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:40:05,096 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 679.0) internal successors, (3395), 5 states have internal predecessors, (3395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:40:05,096 INFO L175 Difference]: Start difference. First operand has 52 places, 40 transitions, 162 flow. Second operand 4 states and 1144 transitions. [2023-08-03 19:40:05,096 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 54 transitions, 298 flow [2023-08-03 19:40:05,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 54 transitions, 292 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-03 19:40:05,099 INFO L231 Difference]: Finished difference. Result has 54 places, 41 transitions, 176 flow [2023-08-03 19:40:05,099 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=679, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=176, PETRI_PLACES=54, PETRI_TRANSITIONS=41} [2023-08-03 19:40:05,100 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 14 predicate places. [2023-08-03 19:40:05,100 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 41 transitions, 176 flow [2023-08-03 19:40:05,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 279.6) internal successors, (1398), 5 states have internal predecessors, (1398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:40:05,101 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:40:05,101 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] [2023-08-03 19:40:05,121 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-03 19:40:05,305 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,SelfDestructingSolverStorable10 [2023-08-03 19:40:05,305 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 19:40:05,306 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:40:05,306 INFO L85 PathProgramCache]: Analyzing trace with hash -1652543193, now seen corresponding path program 1 times [2023-08-03 19:40:05,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:40:05,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804701617] [2023-08-03 19:40:05,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:40:05,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:40:05,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:40:05,377 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-08-03 19:40:05,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:40:05,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804701617] [2023-08-03 19:40:05,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804701617] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:40:05,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1879672373] [2023-08-03 19:40:05,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:40:05,378 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:40:05,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:40:05,379 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:40:05,382 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-03 19:40:05,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:40:05,478 INFO L262 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 19:40:05,480 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:40:05,495 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-08-03 19:40:05,495 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:40:05,512 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-08-03 19:40:05,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1879672373] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:40:05,512 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:40:05,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-03 19:40:05,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191138538] [2023-08-03 19:40:05,513 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:40:05,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:40:05,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:40:05,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:40:05,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:40:05,526 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 679 [2023-08-03 19:40:05,528 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 41 transitions, 176 flow. Second operand has 5 states, 5 states have (on average 280.0) internal successors, (1400), 5 states have internal predecessors, (1400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:40:05,528 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:40:05,528 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 679 [2023-08-03 19:40:05,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:40:05,707 INFO L124 PetriNetUnfolderBase]: 530/1026 cut-off events. [2023-08-03 19:40:05,708 INFO L125 PetriNetUnfolderBase]: For 688/688 co-relation queries the response was YES. [2023-08-03 19:40:05,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2631 conditions, 1026 events. 530/1026 cut-off events. For 688/688 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 4232 event pairs, 439 based on Foata normal form. 9/1035 useless extension candidates. Maximal degree in co-relation 2101. Up to 752 conditions per place. [2023-08-03 19:40:05,716 INFO L140 encePairwiseOnDemand]: 675/679 looper letters, 46 selfloop transitions, 3 changer transitions 2/55 dead transitions. [2023-08-03 19:40:05,716 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 55 transitions, 314 flow [2023-08-03 19:40:05,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 19:40:05,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 19:40:05,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1144 transitions. [2023-08-03 19:40:05,719 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4212076583210604 [2023-08-03 19:40:05,719 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1144 transitions. [2023-08-03 19:40:05,719 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1144 transitions. [2023-08-03 19:40:05,720 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:40:05,720 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1144 transitions. [2023-08-03 19:40:05,722 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 286.0) internal successors, (1144), 4 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:40:05,724 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 679.0) internal successors, (3395), 5 states have internal predecessors, (3395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:40:05,726 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 679.0) internal successors, (3395), 5 states have internal predecessors, (3395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:40:05,726 INFO L175 Difference]: Start difference. First operand has 54 places, 41 transitions, 176 flow. Second operand 4 states and 1144 transitions. [2023-08-03 19:40:05,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 55 transitions, 314 flow [2023-08-03 19:40:05,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 55 transitions, 310 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-03 19:40:05,732 INFO L231 Difference]: Finished difference. Result has 58 places, 40 transitions, 180 flow [2023-08-03 19:40:05,733 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=679, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=180, PETRI_PLACES=58, PETRI_TRANSITIONS=40} [2023-08-03 19:40:05,733 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 18 predicate places. [2023-08-03 19:40:05,733 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 40 transitions, 180 flow [2023-08-03 19:40:05,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 280.0) internal successors, (1400), 5 states have internal predecessors, (1400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:40:05,734 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:40:05,734 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] [2023-08-03 19:40:05,747 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-03 19:40:05,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:40:05,941 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 19:40:05,942 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:40:05,942 INFO L85 PathProgramCache]: Analyzing trace with hash 1517257790, now seen corresponding path program 1 times [2023-08-03 19:40:05,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:40:05,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994793150] [2023-08-03 19:40:05,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:40:05,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:40:06,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:40:06,913 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-08-03 19:40:06,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:40:06,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994793150] [2023-08-03 19:40:06,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994793150] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:40:06,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [900537901] [2023-08-03 19:40:06,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:40:06,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:40:06,914 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:40:06,915 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:40:06,939 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-03 19:40:07,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:40:07,026 INFO L262 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 45 conjunts are in the unsatisfiable core [2023-08-03 19:40:07,029 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:40:08,436 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-08-03 19:40:08,436 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:40:09,637 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-08-03 19:40:09,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [900537901] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:40:09,638 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:40:09,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2023-08-03 19:40:09,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739890666] [2023-08-03 19:40:09,638 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:40:09,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-03 19:40:09,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:40:09,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-03 19:40:09,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2023-08-03 19:40:09,923 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 246 out of 679 [2023-08-03 19:40:09,925 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 40 transitions, 180 flow. Second operand has 12 states, 12 states have (on average 250.25) internal successors, (3003), 12 states have internal predecessors, (3003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:40:09,926 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:40:09,926 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 246 of 679 [2023-08-03 19:40:09,926 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:40:10,707 INFO L124 PetriNetUnfolderBase]: 725/1390 cut-off events. [2023-08-03 19:40:10,707 INFO L125 PetriNetUnfolderBase]: For 1201/1201 co-relation queries the response was YES. [2023-08-03 19:40:10,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3671 conditions, 1390 events. 725/1390 cut-off events. For 1201/1201 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 6995 event pairs, 84 based on Foata normal form. 1/1380 useless extension candidates. Maximal degree in co-relation 3591. Up to 670 conditions per place. [2023-08-03 19:40:10,712 INFO L140 encePairwiseOnDemand]: 670/679 looper letters, 50 selfloop transitions, 5 changer transitions 40/99 dead transitions. [2023-08-03 19:40:10,712 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 99 transitions, 652 flow [2023-08-03 19:40:10,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-03 19:40:10,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-03 19:40:10,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2053 transitions. [2023-08-03 19:40:10,718 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37794550810014726 [2023-08-03 19:40:10,718 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2053 transitions. [2023-08-03 19:40:10,718 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2053 transitions. [2023-08-03 19:40:10,719 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:40:10,719 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2053 transitions. [2023-08-03 19:40:10,722 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 256.625) internal successors, (2053), 8 states have internal predecessors, (2053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:40:10,728 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 679.0) internal successors, (6111), 9 states have internal predecessors, (6111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:40:10,729 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 679.0) internal successors, (6111), 9 states have internal predecessors, (6111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:40:10,729 INFO L175 Difference]: Start difference. First operand has 58 places, 40 transitions, 180 flow. Second operand 8 states and 2053 transitions. [2023-08-03 19:40:10,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 99 transitions, 652 flow [2023-08-03 19:40:10,733 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 99 transitions, 631 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-08-03 19:40:10,734 INFO L231 Difference]: Finished difference. Result has 69 places, 44 transitions, 224 flow [2023-08-03 19:40:10,735 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=679, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=224, PETRI_PLACES=69, PETRI_TRANSITIONS=44} [2023-08-03 19:40:10,735 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 29 predicate places. [2023-08-03 19:40:10,736 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 44 transitions, 224 flow [2023-08-03 19:40:10,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 250.25) internal successors, (3003), 12 states have internal predecessors, (3003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:40:10,736 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:40:10,737 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] [2023-08-03 19:40:10,745 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-03 19:40:10,942 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,SelfDestructingSolverStorable12 [2023-08-03 19:40:10,942 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 19:40:10,942 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:40:10,943 INFO L85 PathProgramCache]: Analyzing trace with hash 1803409050, now seen corresponding path program 2 times [2023-08-03 19:40:10,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:40:10,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264471967] [2023-08-03 19:40:10,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:40:10,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:40:11,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:40:11,780 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-08-03 19:40:11,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:40:11,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264471967] [2023-08-03 19:40:11,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264471967] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:40:11,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 19:40:11,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-03 19:40:11,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267243737] [2023-08-03 19:40:11,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:40:11,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-03 19:40:11,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:40:11,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-03 19:40:11,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-03 19:40:11,919 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 246 out of 679 [2023-08-03 19:40:11,921 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 44 transitions, 224 flow. Second operand has 7 states, 7 states have (on average 250.14285714285714) internal successors, (1751), 7 states have internal predecessors, (1751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:40:11,921 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:40:11,921 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 246 of 679 [2023-08-03 19:40:11,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:40:12,383 INFO L124 PetriNetUnfolderBase]: 235/565 cut-off events. [2023-08-03 19:40:12,383 INFO L125 PetriNetUnfolderBase]: For 891/891 co-relation queries the response was YES. [2023-08-03 19:40:12,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1950 conditions, 565 events. 235/565 cut-off events. For 891/891 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 2636 event pairs, 43 based on Foata normal form. 1/561 useless extension candidates. Maximal degree in co-relation 1929. Up to 443 conditions per place. [2023-08-03 19:40:12,385 INFO L140 encePairwiseOnDemand]: 670/679 looper letters, 0 selfloop transitions, 0 changer transitions 61/61 dead transitions. [2023-08-03 19:40:12,385 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 61 transitions, 434 flow [2023-08-03 19:40:12,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-03 19:40:12,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-03 19:40:12,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2019 transitions. [2023-08-03 19:40:12,391 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3716863033873343 [2023-08-03 19:40:12,391 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2019 transitions. [2023-08-03 19:40:12,391 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2019 transitions. [2023-08-03 19:40:12,392 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:40:12,393 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2019 transitions. [2023-08-03 19:40:12,396 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 252.375) internal successors, (2019), 8 states have internal predecessors, (2019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:40:12,402 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 679.0) internal successors, (6111), 9 states have internal predecessors, (6111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:40:12,403 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 679.0) internal successors, (6111), 9 states have internal predecessors, (6111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:40:12,403 INFO L175 Difference]: Start difference. First operand has 69 places, 44 transitions, 224 flow. Second operand 8 states and 2019 transitions. [2023-08-03 19:40:12,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 61 transitions, 434 flow [2023-08-03 19:40:12,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 61 transitions, 428 flow, removed 3 selfloop flow, removed 3 redundant places. [2023-08-03 19:40:12,407 INFO L231 Difference]: Finished difference. Result has 68 places, 0 transitions, 0 flow [2023-08-03 19:40:12,407 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=679, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=68, PETRI_TRANSITIONS=0} [2023-08-03 19:40:12,407 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 28 predicate places. [2023-08-03 19:40:12,407 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 0 transitions, 0 flow [2023-08-03 19:40:12,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 250.14285714285714) internal successors, (1751), 7 states have internal predecessors, (1751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:40:12,408 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-08-03 19:40:12,408 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-08-03 19:40:12,408 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-08-03 19:40:12,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-03 19:40:12,409 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:40:12,410 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-03 19:40:12,410 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-03 19:40:12,413 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.08 07:40:12 BasicIcfg [2023-08-03 19:40:12,414 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-03 19:40:12,414 INFO L158 Benchmark]: Toolchain (without parser) took 28617.54ms. Allocated memory was 352.3MB in the beginning and 960.5MB in the end (delta: 608.2MB). Free memory was 302.4MB in the beginning and 861.5MB in the end (delta: -559.1MB). Peak memory consumption was 51.2MB. Max. memory is 16.0GB. [2023-08-03 19:40:12,414 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 352.3MB. Free memory is still 305.7MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-03 19:40:12,415 INFO L158 Benchmark]: CACSL2BoogieTranslator took 215.63ms. Allocated memory is still 352.3MB. Free memory was 302.1MB in the beginning and 290.8MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. [2023-08-03 19:40:12,415 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.69ms. Allocated memory is still 352.3MB. Free memory was 290.8MB in the beginning and 288.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 19:40:12,415 INFO L158 Benchmark]: Boogie Preprocessor took 26.46ms. Allocated memory is still 352.3MB. Free memory was 288.4MB in the beginning and 287.1MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 19:40:12,415 INFO L158 Benchmark]: RCFGBuilder took 450.03ms. Allocated memory is still 352.3MB. Free memory was 286.7MB in the beginning and 268.2MB in the end (delta: 18.5MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-03 19:40:12,415 INFO L158 Benchmark]: TraceAbstraction took 27882.62ms. Allocated memory was 352.3MB in the beginning and 960.5MB in the end (delta: 608.2MB). Free memory was 267.5MB in the beginning and 861.5MB in the end (delta: -594.1MB). Peak memory consumption was 15.5MB. Max. memory is 16.0GB. [2023-08-03 19:40:12,417 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 352.3MB. Free memory is still 305.7MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 215.63ms. Allocated memory is still 352.3MB. Free memory was 302.1MB in the beginning and 290.8MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 36.69ms. Allocated memory is still 352.3MB. Free memory was 290.8MB in the beginning and 288.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 26.46ms. Allocated memory is still 352.3MB. Free memory was 288.4MB in the beginning and 287.1MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 450.03ms. Allocated memory is still 352.3MB. Free memory was 286.7MB in the beginning and 268.2MB in the end (delta: 18.5MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * TraceAbstraction took 27882.62ms. Allocated memory was 352.3MB in the beginning and 960.5MB in the end (delta: 608.2MB). Free memory was 267.5MB in the beginning and 861.5MB in the end (delta: -594.1MB). Peak memory consumption was 15.5MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.6s, 201 PlacesBefore, 30 PlacesAfterwards, 215 TransitionsBefore, 30 TransitionsAfterwards, 17014 CoEnabledTransitionPairs, 8 FixpointIterations, 43 TrivialSequentialCompositions, 127 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 50 ConcurrentYvCompositions, 14 ChoiceCompositions, 234 TotalNumberOfCompositions, 16783 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 16137, independent: 16090, independent conditional: 0, independent unconditional: 16090, dependent: 47, dependent conditional: 0, dependent unconditional: 47, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 10019, independent: 9997, independent conditional: 0, independent unconditional: 9997, dependent: 22, dependent conditional: 0, dependent unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 16137, independent: 6093, independent conditional: 0, independent unconditional: 6093, dependent: 25, dependent conditional: 0, dependent unconditional: 25, unknown: 10019, unknown conditional: 0, unknown unconditional: 10019] , Statistics on independence cache: Total cache size (in pairs): 34, Positive cache size: 30, Positive conditional cache size: 0, Positive unconditional cache size: 30, Negative cache size: 4, Negative conditional cache size: 0, Negative unconditional cache size: 4, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 7.7s, 293 PlacesBefore, 40 PlacesAfterwards, 315 TransitionsBefore, 40 TransitionsAfterwards, 53580 CoEnabledTransitionPairs, 8 FixpointIterations, 43 TrivialSequentialCompositions, 208 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 91 ConcurrentYvCompositions, 22 ChoiceCompositions, 364 TotalNumberOfCompositions, 56826 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 54534, independent: 54480, independent conditional: 0, independent unconditional: 54480, dependent: 54, dependent conditional: 0, dependent unconditional: 54, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 31842, independent: 31811, independent conditional: 0, independent unconditional: 31811, dependent: 31, dependent conditional: 0, dependent unconditional: 31, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 54534, independent: 22669, independent conditional: 0, independent unconditional: 22669, dependent: 23, dependent conditional: 0, dependent unconditional: 23, unknown: 31842, unknown conditional: 0, unknown unconditional: 31842] , Statistics on independence cache: Total cache size (in pairs): 63, Positive cache size: 57, Positive conditional cache size: 0, Positive unconditional cache size: 57, Negative cache size: 6, Negative conditional cache size: 0, Negative unconditional cache size: 6, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 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 5 procedures, 285 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 6.4s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.8s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 18 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 7 mSDsluCounter, 1 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 52 IncrementalHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 1 mSDtfsCounter, 52 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=86occurred in iteration=1, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 5 ConstructedInterpolants, 0 QuantifiedInterpolants, 7 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data with 2 thread instances CFG has 7 procedures, 373 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 21.3s, OverallIterations: 12, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 4.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 8.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 949 SdHoareTripleChecker+Valid, 1.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 813 mSDsluCounter, 615 SdHoareTripleChecker+Invalid, 1.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 594 mSDsCounter, 75 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1785 IncrementalHoareTripleChecker+Invalid, 1860 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 75 mSolverCounterUnsat, 21 mSDtfsCounter, 1785 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 460 GetRequests, 395 SyntacticMatches, 11 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=224occurred in iteration=11, InterpolantAutomatonStates: 54, 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: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 5.0s InterpolantComputationTime, 552 NumberOfCodeBlocks, 552 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 688 ConstructedInterpolants, 0 QuantifiedInterpolants, 5846 SizeOfPredicates, 31 NumberOfNonLiveVariables, 1673 ConjunctsInSsa, 71 ConjunctsInUnsatCore, 27 InterpolantComputations, 7 PerfectInterpolantSequences, 283/314 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 19:40:12,434 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...