/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-nzb-file-symm.wvr_bound2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 19:43:24,088 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 19:43:24,162 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 19:43:24,168 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 19:43:24,168 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 19:43:24,169 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 19:43:24,169 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 19:43:24,203 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 19:43:24,204 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 19:43:24,207 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 19:43:24,208 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 19:43:24,208 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 19:43:24,209 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 19:43:24,211 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 19:43:24,211 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 19:43:24,211 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 19:43:24,211 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 19:43:24,211 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 19:43:24,212 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 19:43:24,212 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 19:43:24,212 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 19:43:24,212 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 19:43:24,213 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 19:43:24,213 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 19:43:24,214 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 19:43:24,214 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 19:43:24,214 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 19:43:24,215 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 19:43:24,215 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 19:43:24,215 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 19:43:24,216 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 19:43:24,216 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 19:43:24,216 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 19:43:24,217 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 19:43:24,217 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 19:43:24,217 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 19:43:24,217 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 19:43:24,217 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 19:43:24,217 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 19:43:24,217 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 19:43:24,218 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 19:43:24,218 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> TOGETHER [2023-08-03 19:43:24,475 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 19:43:24,499 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 19:43:24,502 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 19:43:24,503 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 19:43:24,503 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 19:43:24,504 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/weaver_chl-nzb-file-symm.wvr_bound2.c [2023-08-03 19:43:25,662 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 19:43:25,838 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 19:43:25,839 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/weaver_chl-nzb-file-symm.wvr_bound2.c [2023-08-03 19:43:25,846 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cdf39b4da/18c799ff83d04f2cbe195005edd28a68/FLAGf08a8f773 [2023-08-03 19:43:25,858 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cdf39b4da/18c799ff83d04f2cbe195005edd28a68 [2023-08-03 19:43:25,861 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 19:43:25,862 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 19:43:25,863 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 19:43:25,863 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 19:43:25,866 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 19:43:25,866 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 07:43:25" (1/1) ... [2023-08-03 19:43:25,867 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1801c6a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:43:25, skipping insertion in model container [2023-08-03 19:43:25,868 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 07:43:25" (1/1) ... [2023-08-03 19:43:25,895 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 19:43:26,051 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-nzb-file-symm.wvr_bound2.c[5091,5104] [2023-08-03 19:43:26,057 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 19:43:26,065 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 19:43:26,098 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/weaver_chl-nzb-file-symm.wvr_bound2.c[5091,5104] [2023-08-03 19:43:26,108 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 19:43:26,122 INFO L206 MainTranslator]: Completed translation [2023-08-03 19:43:26,123 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:43:26 WrapperNode [2023-08-03 19:43:26,123 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 19:43:26,124 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 19:43:26,124 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 19:43:26,124 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 19:43:26,130 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:43:26" (1/1) ... [2023-08-03 19:43:26,141 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:43:26" (1/1) ... [2023-08-03 19:43:26,172 INFO L138 Inliner]: procedures = 25, calls = 55, calls flagged for inlining = 21, calls inlined = 29, statements flattened = 438 [2023-08-03 19:43:26,172 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 19:43:26,173 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 19:43:26,173 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 19:43:26,173 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 19:43:26,182 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:43:26" (1/1) ... [2023-08-03 19:43:26,182 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:43:26" (1/1) ... [2023-08-03 19:43:26,188 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:43:26" (1/1) ... [2023-08-03 19:43:26,188 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:43:26" (1/1) ... [2023-08-03 19:43:26,200 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:43:26" (1/1) ... [2023-08-03 19:43:26,205 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:43:26" (1/1) ... [2023-08-03 19:43:26,208 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:43:26" (1/1) ... [2023-08-03 19:43:26,210 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:43:26" (1/1) ... [2023-08-03 19:43:26,216 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 19:43:26,217 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 19:43:26,217 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 19:43:26,217 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 19:43:26,218 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:43:26" (1/1) ... [2023-08-03 19:43:26,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 19:43:26,246 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:43:26,257 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 19:43:26,259 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 19:43:26,293 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 19:43:26,293 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 19:43:26,293 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 19:43:26,293 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-03 19:43:26,293 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-03 19:43:26,293 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-03 19:43:26,293 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-03 19:43:26,294 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-03 19:43:26,294 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 19:43:26,294 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-03 19:43:26,294 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 19:43:26,296 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 19:43:26,296 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 19:43:26,298 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 19:43:26,439 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 19:43:26,441 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 19:43:27,103 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 19:43:27,114 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 19:43:27,114 INFO L302 CfgBuilder]: Removed 8 assume(true) statements. [2023-08-03 19:43:27,130 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 07:43:27 BoogieIcfgContainer [2023-08-03 19:43:27,131 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 19:43:27,133 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 19:43:27,133 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 19:43:27,135 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 19:43:27,136 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 07:43:25" (1/3) ... [2023-08-03 19:43:27,136 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40238613 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 07:43:27, skipping insertion in model container [2023-08-03 19:43:27,136 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:43:26" (2/3) ... [2023-08-03 19:43:27,137 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40238613 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 07:43:27, skipping insertion in model container [2023-08-03 19:43:27,137 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 07:43:27" (3/3) ... [2023-08-03 19:43:27,138 INFO L112 eAbstractionObserver]: Analyzing ICFG weaver_chl-nzb-file-symm.wvr_bound2.c [2023-08-03 19:43:27,146 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 19:43:27,155 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 19:43:27,156 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-03 19:43:27,156 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 19:43:27,299 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-03 19:43:27,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 463 places, 515 transitions, 1052 flow [2023-08-03 19:43:27,571 INFO L124 PetriNetUnfolderBase]: 94/801 cut-off events. [2023-08-03 19:43:27,571 INFO L125 PetriNetUnfolderBase]: For 8/14 co-relation queries the response was YES. [2023-08-03 19:43:27,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 821 conditions, 801 events. 94/801 cut-off events. For 8/14 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 3686 event pairs, 0 based on Foata normal form. 0/697 useless extension candidates. Maximal degree in co-relation 410. Up to 8 conditions per place. [2023-08-03 19:43:27,592 INFO L82 GeneralOperation]: Start removeDead. Operand has 463 places, 515 transitions, 1052 flow [2023-08-03 19:43:27,609 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 463 places, 515 transitions, 1052 flow [2023-08-03 19:43:27,612 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 19:43:27,620 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 463 places, 515 transitions, 1052 flow [2023-08-03 19:43:27,622 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 463 places, 515 transitions, 1052 flow [2023-08-03 19:43:27,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 463 places, 515 transitions, 1052 flow [2023-08-03 19:43:27,770 INFO L124 PetriNetUnfolderBase]: 94/801 cut-off events. [2023-08-03 19:43:27,770 INFO L125 PetriNetUnfolderBase]: For 8/14 co-relation queries the response was YES. [2023-08-03 19:43:27,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 821 conditions, 801 events. 94/801 cut-off events. For 8/14 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 3686 event pairs, 0 based on Foata normal form. 0/697 useless extension candidates. Maximal degree in co-relation 410. Up to 8 conditions per place. [2023-08-03 19:43:27,821 INFO L119 LiptonReduction]: Number of co-enabled transitions 82992 [2023-08-03 19:43:42,362 INFO L134 LiptonReduction]: Checked pairs total: 96184 [2023-08-03 19:43:42,363 INFO L136 LiptonReduction]: Total number of compositions: 604 [2023-08-03 19:43:42,376 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 19:43:42,382 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;@783e8ff1, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 19:43:42,382 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-03 19:43:42,386 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 19:43:42,386 INFO L124 PetriNetUnfolderBase]: 3/18 cut-off events. [2023-08-03 19:43:42,386 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 19:43:42,387 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:43:42,387 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:43:42,388 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 19:43:42,392 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:43:42,392 INFO L85 PathProgramCache]: Analyzing trace with hash -1306383322, now seen corresponding path program 1 times [2023-08-03 19:43:42,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:43:42,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412543947] [2023-08-03 19:43:42,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:43:42,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:43:42,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:43:42,772 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 19:43:42,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:43:42,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412543947] [2023-08-03 19:43:42,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412543947] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:43:42,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 19:43:42,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 19:43:42,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885004799] [2023-08-03 19:43:42,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:43:42,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 19:43:42,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:43:42,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 19:43:42,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 19:43:42,865 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 471 out of 1119 [2023-08-03 19:43:42,872 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 63 transitions, 148 flow. Second operand has 3 states, 3 states have (on average 473.3333333333333) internal successors, (1420), 3 states have internal predecessors, (1420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:43:42,872 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:43:42,872 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 471 of 1119 [2023-08-03 19:43:42,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:43:43,561 INFO L124 PetriNetUnfolderBase]: 3861/5565 cut-off events. [2023-08-03 19:43:43,562 INFO L125 PetriNetUnfolderBase]: For 148/148 co-relation queries the response was YES. [2023-08-03 19:43:43,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10993 conditions, 5565 events. 3861/5565 cut-off events. For 148/148 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 24896 event pairs, 2580 based on Foata normal form. 0/3691 useless extension candidates. Maximal degree in co-relation 10245. Up to 5324 conditions per place. [2023-08-03 19:43:43,601 INFO L140 encePairwiseOnDemand]: 1113/1119 looper letters, 54 selfloop transitions, 4 changer transitions 0/64 dead transitions. [2023-08-03 19:43:43,601 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 64 transitions, 266 flow [2023-08-03 19:43:43,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 19:43:43,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 19:43:43,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1474 transitions. [2023-08-03 19:43:43,623 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4390825141495383 [2023-08-03 19:43:43,624 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1474 transitions. [2023-08-03 19:43:43,624 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1474 transitions. [2023-08-03 19:43:43,628 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:43:43,630 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1474 transitions. [2023-08-03 19:43:43,637 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 491.3333333333333) internal successors, (1474), 3 states have internal predecessors, (1474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:43:43,648 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1119.0) internal successors, (4476), 4 states have internal predecessors, (4476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:43:43,650 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1119.0) internal successors, (4476), 4 states have internal predecessors, (4476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:43:43,652 INFO L175 Difference]: Start difference. First operand has 51 places, 63 transitions, 148 flow. Second operand 3 states and 1474 transitions. [2023-08-03 19:43:43,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 64 transitions, 266 flow [2023-08-03 19:43:43,657 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 64 transitions, 266 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 19:43:43,660 INFO L231 Difference]: Finished difference. Result has 53 places, 64 transitions, 168 flow [2023-08-03 19:43:43,662 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1119, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=168, PETRI_PLACES=53, PETRI_TRANSITIONS=64} [2023-08-03 19:43:43,666 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 2 predicate places. [2023-08-03 19:43:43,666 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 64 transitions, 168 flow [2023-08-03 19:43:43,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 473.3333333333333) internal successors, (1420), 3 states have internal predecessors, (1420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:43:43,667 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:43:43,667 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:43:43,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 19:43:43,668 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 19:43:43,669 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:43:43,670 INFO L85 PathProgramCache]: Analyzing trace with hash 1745335043, now seen corresponding path program 1 times [2023-08-03 19:43:43,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:43:43,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528634216] [2023-08-03 19:43:43,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:43:43,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:43:43,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:43:43,760 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-03 19:43:43,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:43:43,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528634216] [2023-08-03 19:43:43,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528634216] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:43:43,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 19:43:43,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-03 19:43:43,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241665311] [2023-08-03 19:43:43,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:43:43,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 19:43:43,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:43:43,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 19:43:43,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 19:43:43,777 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 475 out of 1119 [2023-08-03 19:43:43,778 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 64 transitions, 168 flow. Second operand has 3 states, 3 states have (on average 478.0) internal successors, (1434), 3 states have internal predecessors, (1434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:43:43,779 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:43:43,779 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 475 of 1119 [2023-08-03 19:43:43,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:43:44,417 INFO L124 PetriNetUnfolderBase]: 3731/5430 cut-off events. [2023-08-03 19:43:44,418 INFO L125 PetriNetUnfolderBase]: For 96/96 co-relation queries the response was YES. [2023-08-03 19:43:44,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10812 conditions, 5430 events. 3731/5430 cut-off events. For 96/96 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 25901 event pairs, 1176 based on Foata normal form. 0/3593 useless extension candidates. Maximal degree in co-relation 10789. Up to 5213 conditions per place. [2023-08-03 19:43:44,453 INFO L140 encePairwiseOnDemand]: 1116/1119 looper letters, 73 selfloop transitions, 2 changer transitions 0/81 dead transitions. [2023-08-03 19:43:44,453 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 81 transitions, 352 flow [2023-08-03 19:43:44,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 19:43:44,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 19:43:44,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1499 transitions. [2023-08-03 19:43:44,458 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44652963955913016 [2023-08-03 19:43:44,458 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1499 transitions. [2023-08-03 19:43:44,458 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1499 transitions. [2023-08-03 19:43:44,459 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:43:44,459 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1499 transitions. [2023-08-03 19:43:44,462 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 499.6666666666667) internal successors, (1499), 3 states have internal predecessors, (1499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:43:44,467 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1119.0) internal successors, (4476), 4 states have internal predecessors, (4476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:43:44,469 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1119.0) internal successors, (4476), 4 states have internal predecessors, (4476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:43:44,470 INFO L175 Difference]: Start difference. First operand has 53 places, 64 transitions, 168 flow. Second operand 3 states and 1499 transitions. [2023-08-03 19:43:44,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 81 transitions, 352 flow [2023-08-03 19:43:44,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 81 transitions, 348 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 19:43:44,475 INFO L231 Difference]: Finished difference. Result has 55 places, 64 transitions, 172 flow [2023-08-03 19:43:44,475 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1119, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=172, PETRI_PLACES=55, PETRI_TRANSITIONS=64} [2023-08-03 19:43:44,476 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 4 predicate places. [2023-08-03 19:43:44,476 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 64 transitions, 172 flow [2023-08-03 19:43:44,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 478.0) internal successors, (1434), 3 states have internal predecessors, (1434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:43:44,477 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:43:44,477 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:43:44,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-03 19:43:44,478 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 19:43:44,478 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:43:44,478 INFO L85 PathProgramCache]: Analyzing trace with hash -1516413198, now seen corresponding path program 1 times [2023-08-03 19:43:44,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:43:44,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455332417] [2023-08-03 19:43:44,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:43:44,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:43:44,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:43:44,569 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-03 19:43:44,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:43:44,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455332417] [2023-08-03 19:43:44,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455332417] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:43:44,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1807631551] [2023-08-03 19:43:44,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:43:44,570 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:43:44,571 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:43:44,577 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 19:43:44,578 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 19:43:44,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:43:44,670 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-03 19:43:44,673 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:43:44,721 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-03 19:43:44,721 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:43:44,740 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-03 19:43:44,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1807631551] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:43:44,741 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:43:44,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2023-08-03 19:43:44,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138003879] [2023-08-03 19:43:44,741 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:43:44,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-03 19:43:44,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:43:44,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-03 19:43:44,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2023-08-03 19:43:44,829 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 467 out of 1119 [2023-08-03 19:43:44,833 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 64 transitions, 172 flow. Second operand has 8 states, 8 states have (on average 468.75) internal successors, (3750), 8 states have internal predecessors, (3750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:43:44,834 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:43:44,834 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 467 of 1119 [2023-08-03 19:43:44,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:43:45,457 INFO L124 PetriNetUnfolderBase]: 3764/5444 cut-off events. [2023-08-03 19:43:45,457 INFO L125 PetriNetUnfolderBase]: For 149/149 co-relation queries the response was YES. [2023-08-03 19:43:45,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10852 conditions, 5444 events. 3764/5444 cut-off events. For 149/149 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 24764 event pairs, 2556 based on Foata normal form. 3/3623 useless extension candidates. Maximal degree in co-relation 10805. Up to 5230 conditions per place. [2023-08-03 19:43:45,490 INFO L140 encePairwiseOnDemand]: 1114/1119 looper letters, 54 selfloop transitions, 10 changer transitions 0/70 dead transitions. [2023-08-03 19:43:45,491 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 70 transitions, 324 flow [2023-08-03 19:43:45,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-03 19:43:45,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-03 19:43:45,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2872 transitions. [2023-08-03 19:43:45,498 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42776288352695857 [2023-08-03 19:43:45,498 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2872 transitions. [2023-08-03 19:43:45,498 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2872 transitions. [2023-08-03 19:43:45,500 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:43:45,500 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2872 transitions. [2023-08-03 19:43:45,505 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 478.6666666666667) internal successors, (2872), 6 states have internal predecessors, (2872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:43:45,515 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 1119.0) internal successors, (7833), 7 states have internal predecessors, (7833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:43:45,520 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 1119.0) internal successors, (7833), 7 states have internal predecessors, (7833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:43:45,520 INFO L175 Difference]: Start difference. First operand has 55 places, 64 transitions, 172 flow. Second operand 6 states and 2872 transitions. [2023-08-03 19:43:45,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 70 transitions, 324 flow [2023-08-03 19:43:45,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 70 transitions, 320 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-03 19:43:45,523 INFO L231 Difference]: Finished difference. Result has 61 places, 70 transitions, 234 flow [2023-08-03 19:43:45,523 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1119, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=234, PETRI_PLACES=61, PETRI_TRANSITIONS=70} [2023-08-03 19:43:45,524 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 10 predicate places. [2023-08-03 19:43:45,524 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 70 transitions, 234 flow [2023-08-03 19:43:45,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 468.75) internal successors, (3750), 8 states have internal predecessors, (3750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:43:45,527 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:43:45,527 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 2, 1, 1, 1, 1, 1, 1] [2023-08-03 19:43:45,540 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 19:43:45,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:43:45,733 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 19:43:45,734 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:43:45,734 INFO L85 PathProgramCache]: Analyzing trace with hash -918069137, now seen corresponding path program 2 times [2023-08-03 19:43:45,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:43:45,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249900170] [2023-08-03 19:43:45,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:43:45,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:43:45,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:43:45,905 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-03 19:43:45,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:43:45,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249900170] [2023-08-03 19:43:45,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249900170] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:43:45,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [713419262] [2023-08-03 19:43:45,906 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-03 19:43:45,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:43:45,906 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:43:45,908 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 19:43:45,910 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 19:43:46,013 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-03 19:43:46,013 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-03 19:43:46,015 INFO L262 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-03 19:43:46,016 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:43:46,080 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-03 19:43:46,081 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:43:46,147 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-03 19:43:46,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [713419262] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:43:46,147 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:43:46,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2023-08-03 19:43:46,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915127881] [2023-08-03 19:43:46,148 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:43:46,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-03 19:43:46,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:43:46,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-03 19:43:46,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=166, Unknown=0, NotChecked=0, Total=272 [2023-08-03 19:43:46,324 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 467 out of 1119 [2023-08-03 19:43:46,333 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 70 transitions, 234 flow. Second operand has 17 states, 17 states have (on average 468.3529411764706) internal successors, (7962), 17 states have internal predecessors, (7962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:43:46,333 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:43:46,333 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 467 of 1119 [2023-08-03 19:43:46,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:43:46,908 INFO L124 PetriNetUnfolderBase]: 3772/5449 cut-off events. [2023-08-03 19:43:46,908 INFO L125 PetriNetUnfolderBase]: For 150/150 co-relation queries the response was YES. [2023-08-03 19:43:46,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10868 conditions, 5449 events. 3772/5449 cut-off events. For 150/150 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 24822 event pairs, 2556 based on Foata normal form. 1/3626 useless extension candidates. Maximal degree in co-relation 10796. Up to 5230 conditions per place. [2023-08-03 19:43:46,941 INFO L140 encePairwiseOnDemand]: 1114/1119 looper letters, 54 selfloop transitions, 12 changer transitions 0/72 dead transitions. [2023-08-03 19:43:46,941 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 72 transitions, 378 flow [2023-08-03 19:43:46,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-03 19:43:46,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-03 19:43:46,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 3337 transitions. [2023-08-03 19:43:46,949 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42601812843099707 [2023-08-03 19:43:46,949 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 3337 transitions. [2023-08-03 19:43:46,949 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 3337 transitions. [2023-08-03 19:43:46,951 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:43:46,951 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 3337 transitions. [2023-08-03 19:43:46,957 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 476.7142857142857) internal successors, (3337), 7 states have internal predecessors, (3337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:43:46,966 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 1119.0) internal successors, (8952), 8 states have internal predecessors, (8952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:43:46,969 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 1119.0) internal successors, (8952), 8 states have internal predecessors, (8952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:43:46,969 INFO L175 Difference]: Start difference. First operand has 61 places, 70 transitions, 234 flow. Second operand 7 states and 3337 transitions. [2023-08-03 19:43:46,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 72 transitions, 378 flow [2023-08-03 19:43:46,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 72 transitions, 362 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-03 19:43:46,977 INFO L231 Difference]: Finished difference. Result has 67 places, 72 transitions, 264 flow [2023-08-03 19:43:46,978 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1119, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=264, PETRI_PLACES=67, PETRI_TRANSITIONS=72} [2023-08-03 19:43:46,978 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 16 predicate places. [2023-08-03 19:43:46,978 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 72 transitions, 264 flow [2023-08-03 19:43:46,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 468.3529411764706) internal successors, (7962), 17 states have internal predecessors, (7962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:43:46,981 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:43:46,982 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1] [2023-08-03 19:43:46,988 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 19:43:47,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-08-03 19:43:47,188 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 19:43:47,188 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:43:47,188 INFO L85 PathProgramCache]: Analyzing trace with hash 1851321266, now seen corresponding path program 3 times [2023-08-03 19:43:47,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:43:47,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461543147] [2023-08-03 19:43:47,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:43:47,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:43:47,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 19:43:47,217 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 19:43:47,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 19:43:47,255 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 19:43:47,255 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 19:43:47,256 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2023-08-03 19:43:47,258 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2023-08-03 19:43:47,258 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-08-03 19:43:47,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-03 19:43:47,258 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1, 1] [2023-08-03 19:43:47,260 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 19:43:47,261 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 19:43:47,331 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-08-03 19:43:47,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 741 places, 833 transitions, 1714 flow [2023-08-03 19:43:47,974 INFO L124 PetriNetUnfolderBase]: 285/2106 cut-off events. [2023-08-03 19:43:47,974 INFO L125 PetriNetUnfolderBase]: For 72/88 co-relation queries the response was YES. [2023-08-03 19:43:48,045 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2203 conditions, 2106 events. 285/2106 cut-off events. For 72/88 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 15060 event pairs, 2 based on Foata normal form. 0/1818 useless extension candidates. Maximal degree in co-relation 1329. Up to 32 conditions per place. [2023-08-03 19:43:48,046 INFO L82 GeneralOperation]: Start removeDead. Operand has 741 places, 833 transitions, 1714 flow [2023-08-03 19:43:48,074 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 741 places, 833 transitions, 1714 flow [2023-08-03 19:43:48,074 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 19:43:48,075 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 741 places, 833 transitions, 1714 flow [2023-08-03 19:43:48,075 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 741 places, 833 transitions, 1714 flow [2023-08-03 19:43:48,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 741 places, 833 transitions, 1714 flow [2023-08-03 19:43:48,709 INFO L124 PetriNetUnfolderBase]: 285/2106 cut-off events. [2023-08-03 19:43:48,709 INFO L125 PetriNetUnfolderBase]: For 72/88 co-relation queries the response was YES. [2023-08-03 19:43:48,757 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2203 conditions, 2106 events. 285/2106 cut-off events. For 72/88 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 15060 event pairs, 2 based on Foata normal form. 0/1818 useless extension candidates. Maximal degree in co-relation 1329. Up to 32 conditions per place. [2023-08-03 19:43:48,967 INFO L119 LiptonReduction]: Number of co-enabled transitions 366912 [2023-08-03 19:44:06,891 INFO L134 LiptonReduction]: Checked pairs total: 704933 [2023-08-03 19:44:06,892 INFO L136 LiptonReduction]: Total number of compositions: 905 [2023-08-03 19:44:06,894 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 19:44:06,895 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;@783e8ff1, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 19:44:06,895 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-03 19:44:06,897 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 19:44:06,897 INFO L124 PetriNetUnfolderBase]: 2/18 cut-off events. [2023-08-03 19:44:06,898 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 19:44:06,898 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:44:06,898 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:44:06,898 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 19:44:06,898 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:44:06,898 INFO L85 PathProgramCache]: Analyzing trace with hash 1143851856, now seen corresponding path program 1 times [2023-08-03 19:44:06,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:44:06,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977760551] [2023-08-03 19:44:06,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:44:06,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:44:06,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:44:06,942 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 19:44:06,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:44:06,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977760551] [2023-08-03 19:44:06,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977760551] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:44:06,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 19:44:06,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 19:44:06,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471236026] [2023-08-03 19:44:06,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:44:06,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 19:44:06,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:44:06,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 19:44:06,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 19:44:06,972 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 765 out of 1738 [2023-08-03 19:44:06,975 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 195 transitions, 438 flow. Second operand has 3 states, 3 states have (on average 767.3333333333334) internal successors, (2302), 3 states have internal predecessors, (2302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:44:06,975 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:44:06,975 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 765 of 1738 [2023-08-03 19:44:06,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand