/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-chromosome-trans.wvr_bound2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 19:35:16,159 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 19:35:16,208 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 19:35:16,211 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 19:35:16,212 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 19:35:16,212 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 19:35:16,212 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 19:35:16,231 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 19:35:16,231 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 19:35:16,232 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 19:35:16,232 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 19:35:16,233 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 19:35:16,233 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 19:35:16,233 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 19:35:16,234 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 19:35:16,234 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 19:35:16,234 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 19:35:16,235 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 19:35:16,235 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 19:35:16,235 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 19:35:16,236 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 19:35:16,236 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 19:35:16,236 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 19:35:16,237 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 19:35:16,237 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 19:35:16,237 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 19:35:16,238 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 19:35:16,238 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 19:35:16,238 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 19:35:16,239 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 19:35:16,239 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 19:35:16,239 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 19:35:16,239 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 19:35:16,240 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 19:35:16,240 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 19:35:16,240 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 19:35:16,241 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 19:35:16,241 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 19:35:16,241 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 19:35:16,241 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 19:35:16,242 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 19:35:16,242 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> TOGETHER [2023-08-03 19:35:16,434 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 19:35:16,457 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 19:35:16,459 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 19:35:16,460 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 19:35:16,460 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 19:35:16,461 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/weaver_chl-chromosome-trans.wvr_bound2.c [2023-08-03 19:35:17,657 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 19:35:17,875 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 19:35:17,875 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/weaver_chl-chromosome-trans.wvr_bound2.c [2023-08-03 19:35:17,884 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/465403415/713c254073cd49cf8e8ad4963e5217c6/FLAG0fa5d487b [2023-08-03 19:35:17,899 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/465403415/713c254073cd49cf8e8ad4963e5217c6 [2023-08-03 19:35:17,904 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 19:35:17,907 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 19:35:17,908 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 19:35:17,908 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 19:35:17,910 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 19:35:17,911 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 07:35:17" (1/1) ... [2023-08-03 19:35:17,912 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@636ab05e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:35:17, skipping insertion in model container [2023-08-03 19:35:17,912 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 07:35:17" (1/1) ... [2023-08-03 19:35:17,937 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 19:35:18,076 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-chromosome-trans.wvr_bound2.c[3277,3290] [2023-08-03 19:35:18,082 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 19:35:18,089 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 19:35:18,113 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-chromosome-trans.wvr_bound2.c[3277,3290] [2023-08-03 19:35:18,118 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 19:35:18,131 INFO L206 MainTranslator]: Completed translation [2023-08-03 19:35:18,132 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:35:18 WrapperNode [2023-08-03 19:35:18,132 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 19:35:18,133 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 19:35:18,133 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 19:35:18,133 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 19:35:18,139 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:35:18" (1/1) ... [2023-08-03 19:35:18,147 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:35:18" (1/1) ... [2023-08-03 19:35:18,182 INFO L138 Inliner]: procedures = 26, calls = 46, calls flagged for inlining = 16, calls inlined = 24, statements flattened = 325 [2023-08-03 19:35:18,183 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 19:35:18,183 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 19:35:18,184 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 19:35:18,184 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 19:35:18,191 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:35:18" (1/1) ... [2023-08-03 19:35:18,192 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:35:18" (1/1) ... [2023-08-03 19:35:18,196 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:35:18" (1/1) ... [2023-08-03 19:35:18,197 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:35:18" (1/1) ... [2023-08-03 19:35:18,222 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:35:18" (1/1) ... [2023-08-03 19:35:18,227 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:35:18" (1/1) ... [2023-08-03 19:35:18,229 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:35:18" (1/1) ... [2023-08-03 19:35:18,230 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:35:18" (1/1) ... [2023-08-03 19:35:18,234 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 19:35:18,234 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 19:35:18,235 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 19:35:18,235 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 19:35:18,235 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:35:18" (1/1) ... [2023-08-03 19:35:18,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 19:35:18,266 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:35:18,276 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 19:35:18,285 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 19:35:18,302 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 19:35:18,305 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 19:35:18,305 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 19:35:18,305 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-03 19:35:18,305 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-03 19:35:18,306 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-03 19:35:18,306 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-03 19:35:18,306 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-03 19:35:18,306 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-03 19:35:18,306 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-03 19:35:18,306 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 19:35:18,306 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-03 19:35:18,306 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 19:35:18,307 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 19:35:18,307 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 19:35:18,308 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 19:35:18,404 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 19:35:18,405 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 19:35:18,813 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 19:35:18,822 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 19:35:18,822 INFO L302 CfgBuilder]: Removed 12 assume(true) statements. [2023-08-03 19:35:18,824 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 07:35:18 BoogieIcfgContainer [2023-08-03 19:35:18,824 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 19:35:18,826 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 19:35:18,826 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 19:35:18,835 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 19:35:18,836 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 07:35:17" (1/3) ... [2023-08-03 19:35:18,836 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a60556a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 07:35:18, skipping insertion in model container [2023-08-03 19:35:18,837 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:35:18" (2/3) ... [2023-08-03 19:35:18,837 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a60556a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 07:35:18, skipping insertion in model container [2023-08-03 19:35:18,837 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 07:35:18" (3/3) ... [2023-08-03 19:35:18,840 INFO L112 eAbstractionObserver]: Analyzing ICFG weaver_chl-chromosome-trans.wvr_bound2.c [2023-08-03 19:35:18,854 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 19:35:18,863 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 19:35:18,863 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-03 19:35:18,864 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 19:35:19,001 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-08-03 19:35:19,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 330 places, 366 transitions, 774 flow [2023-08-03 19:35:19,349 INFO L124 PetriNetUnfolderBase]: 129/974 cut-off events. [2023-08-03 19:35:19,350 INFO L125 PetriNetUnfolderBase]: For 36/40 co-relation queries the response was YES. [2023-08-03 19:35:19,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1035 conditions, 974 events. 129/974 cut-off events. For 36/40 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 5518 event pairs, 0 based on Foata normal form. 0/835 useless extension candidates. Maximal degree in co-relation 559. Up to 16 conditions per place. [2023-08-03 19:35:19,369 INFO L82 GeneralOperation]: Start removeDead. Operand has 330 places, 366 transitions, 774 flow [2023-08-03 19:35:19,383 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 330 places, 366 transitions, 774 flow [2023-08-03 19:35:19,386 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 19:35:19,400 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 330 places, 366 transitions, 774 flow [2023-08-03 19:35:19,404 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 330 places, 366 transitions, 774 flow [2023-08-03 19:35:19,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 330 places, 366 transitions, 774 flow [2023-08-03 19:35:19,598 INFO L124 PetriNetUnfolderBase]: 129/974 cut-off events. [2023-08-03 19:35:19,599 INFO L125 PetriNetUnfolderBase]: For 36/40 co-relation queries the response was YES. [2023-08-03 19:35:19,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1035 conditions, 974 events. 129/974 cut-off events. For 36/40 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 5518 event pairs, 0 based on Foata normal form. 0/835 useless extension candidates. Maximal degree in co-relation 559. Up to 16 conditions per place. [2023-08-03 19:35:19,646 INFO L119 LiptonReduction]: Number of co-enabled transitions 32940 [2023-08-03 19:35:27,872 INFO L134 LiptonReduction]: Checked pairs total: 41765 [2023-08-03 19:35:27,873 INFO L136 LiptonReduction]: Total number of compositions: 385 [2023-08-03 19:35:27,885 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 19:35:27,891 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;@2580437, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 19:35:27,891 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-03 19:35:27,896 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 19:35:27,897 INFO L124 PetriNetUnfolderBase]: 3/36 cut-off events. [2023-08-03 19:35:27,897 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 19:35:27,897 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:35:27,897 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:35:27,898 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:35:27,902 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:35:27,902 INFO L85 PathProgramCache]: Analyzing trace with hash -87948229, now seen corresponding path program 1 times [2023-08-03 19:35:27,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:35:27,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391654839] [2023-08-03 19:35:27,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:35:27,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:35:28,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:35:28,256 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 19:35:28,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:35:28,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391654839] [2023-08-03 19:35:28,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391654839] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:35:28,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 19:35:28,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-03 19:35:28,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820743319] [2023-08-03 19:35:28,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:35:28,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 19:35:28,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:35:28,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 19:35:28,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 19:35:28,359 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 313 out of 751 [2023-08-03 19:35:28,365 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 59 transitions, 160 flow. Second operand has 3 states, 3 states have (on average 315.3333333333333) internal successors, (946), 3 states have internal predecessors, (946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:35:28,366 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:35:28,366 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 313 of 751 [2023-08-03 19:35:28,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:35:29,309 INFO L124 PetriNetUnfolderBase]: 6180/9007 cut-off events. [2023-08-03 19:35:29,309 INFO L125 PetriNetUnfolderBase]: For 640/640 co-relation queries the response was YES. [2023-08-03 19:35:29,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18156 conditions, 9007 events. 6180/9007 cut-off events. For 640/640 co-relation queries the response was YES. Maximal size of possible extension queue 319. Compared 45787 event pairs, 4648 based on Foata normal form. 0/6893 useless extension candidates. Maximal degree in co-relation 15073. Up to 8700 conditions per place. [2023-08-03 19:35:29,358 INFO L140 encePairwiseOnDemand]: 743/751 looper letters, 49 selfloop transitions, 6 changer transitions 0/61 dead transitions. [2023-08-03 19:35:29,359 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 61 transitions, 274 flow [2023-08-03 19:35:29,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 19:35:29,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 19:35:29,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 998 transitions. [2023-08-03 19:35:29,378 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4429649356413671 [2023-08-03 19:35:29,378 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 998 transitions. [2023-08-03 19:35:29,379 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 998 transitions. [2023-08-03 19:35:29,381 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:35:29,383 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 998 transitions. [2023-08-03 19:35:29,389 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 332.6666666666667) internal successors, (998), 3 states have internal predecessors, (998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:35:29,398 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 751.0) internal successors, (3004), 4 states have internal predecessors, (3004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:35:29,399 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 751.0) internal successors, (3004), 4 states have internal predecessors, (3004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:35:29,401 INFO L175 Difference]: Start difference. First operand has 51 places, 59 transitions, 160 flow. Second operand 3 states and 998 transitions. [2023-08-03 19:35:29,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 61 transitions, 274 flow [2023-08-03 19:35:29,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 61 transitions, 274 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 19:35:29,410 INFO L231 Difference]: Finished difference. Result has 53 places, 61 transitions, 190 flow [2023-08-03 19:35:29,412 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=751, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=190, PETRI_PLACES=53, PETRI_TRANSITIONS=61} [2023-08-03 19:35:29,415 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 2 predicate places. [2023-08-03 19:35:29,415 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 61 transitions, 190 flow [2023-08-03 19:35:29,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 315.3333333333333) internal successors, (946), 3 states have internal predecessors, (946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:35:29,416 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:35:29,416 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:35:29,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 19:35:29,417 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 (and 1 more)] === [2023-08-03 19:35:29,425 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:35:29,425 INFO L85 PathProgramCache]: Analyzing trace with hash -822728776, now seen corresponding path program 1 times [2023-08-03 19:35:29,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:35:29,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399324809] [2023-08-03 19:35:29,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:35:29,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:35:29,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:35:29,583 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-03 19:35:29,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:35:29,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399324809] [2023-08-03 19:35:29,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399324809] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:35:29,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1417156200] [2023-08-03 19:35:29,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:35:29,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:35:29,584 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:35:29,592 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 19:35:29,622 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 19:35:29,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:35:29,706 INFO L262 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-03 19:35:29,710 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:35:29,780 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-03 19:35:29,781 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:35:29,798 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-03 19:35:29,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1417156200] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:35:29,799 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:35:29,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 8 [2023-08-03 19:35:29,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630938802] [2023-08-03 19:35:29,800 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:35:29,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-03 19:35:29,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:35:29,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-03 19:35:29,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2023-08-03 19:35:29,924 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 307 out of 751 [2023-08-03 19:35:29,927 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 61 transitions, 190 flow. Second operand has 8 states, 8 states have (on average 309.25) internal successors, (2474), 8 states have internal predecessors, (2474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:35:29,928 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:35:29,928 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 307 of 751 [2023-08-03 19:35:29,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:35:30,713 INFO L124 PetriNetUnfolderBase]: 6180/9016 cut-off events. [2023-08-03 19:35:30,713 INFO L125 PetriNetUnfolderBase]: For 640/640 co-relation queries the response was YES. [2023-08-03 19:35:30,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18198 conditions, 9016 events. 6180/9016 cut-off events. For 640/640 co-relation queries the response was YES. Maximal size of possible extension queue 319. Compared 45784 event pairs, 4648 based on Foata normal form. 6/6910 useless extension candidates. Maximal degree in co-relation 18146. Up to 8700 conditions per place. [2023-08-03 19:35:30,772 INFO L140 encePairwiseOnDemand]: 744/751 looper letters, 49 selfloop transitions, 15 changer transitions 0/70 dead transitions. [2023-08-03 19:35:30,773 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 70 transitions, 354 flow [2023-08-03 19:35:30,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-03 19:35:30,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-03 19:35:30,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1915 transitions. [2023-08-03 19:35:30,778 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4249889036839769 [2023-08-03 19:35:30,778 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1915 transitions. [2023-08-03 19:35:30,778 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1915 transitions. [2023-08-03 19:35:30,779 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:35:30,779 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1915 transitions. [2023-08-03 19:35:30,783 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 319.1666666666667) internal successors, (1915), 6 states have internal predecessors, (1915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:35:30,789 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 751.0) internal successors, (5257), 7 states have internal predecessors, (5257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:35:30,792 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 751.0) internal successors, (5257), 7 states have internal predecessors, (5257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:35:30,792 INFO L175 Difference]: Start difference. First operand has 53 places, 61 transitions, 190 flow. Second operand 6 states and 1915 transitions. [2023-08-03 19:35:30,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 70 transitions, 354 flow [2023-08-03 19:35:30,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 70 transitions, 348 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 19:35:30,797 INFO L231 Difference]: Finished difference. Result has 60 places, 70 transitions, 280 flow [2023-08-03 19:35:30,797 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=751, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=280, PETRI_PLACES=60, PETRI_TRANSITIONS=70} [2023-08-03 19:35:30,798 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 9 predicate places. [2023-08-03 19:35:30,798 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 70 transitions, 280 flow [2023-08-03 19:35:30,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 309.25) internal successors, (2474), 8 states have internal predecessors, (2474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:35:30,799 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:35:30,799 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:35:30,814 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 19:35:31,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:35:31,006 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:35:31,006 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:35:31,006 INFO L85 PathProgramCache]: Analyzing trace with hash 1153076987, now seen corresponding path program 2 times [2023-08-03 19:35:31,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:35:31,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587979125] [2023-08-03 19:35:31,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:35:31,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:35:31,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:35:31,261 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-08-03 19:35:31,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:35:31,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587979125] [2023-08-03 19:35:31,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587979125] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:35:31,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1830209737] [2023-08-03 19:35:31,263 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-03 19:35:31,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:35:31,263 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:35:31,264 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 19:35:31,265 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 19:35:31,380 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-03 19:35:31,381 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-03 19:35:31,383 INFO L262 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-03 19:35:31,384 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:35:31,453 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-08-03 19:35:31,453 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:35:31,516 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-08-03 19:35:31,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1830209737] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:35:31,517 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:35:31,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 17 [2023-08-03 19:35:31,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676663444] [2023-08-03 19:35:31,517 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:35:31,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-03 19:35:31,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:35:31,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-03 19:35:31,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=166, Unknown=0, NotChecked=0, Total=272 [2023-08-03 19:35:31,835 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 307 out of 751 [2023-08-03 19:35:31,841 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 70 transitions, 280 flow. Second operand has 17 states, 17 states have (on average 308.5882352941176) internal successors, (5246), 17 states have internal predecessors, (5246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:35:31,841 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:35:31,841 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 307 of 751 [2023-08-03 19:35:31,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:35:32,691 INFO L124 PetriNetUnfolderBase]: 6180/9019 cut-off events. [2023-08-03 19:35:32,691 INFO L125 PetriNetUnfolderBase]: For 644/644 co-relation queries the response was YES. [2023-08-03 19:35:32,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18240 conditions, 9019 events. 6180/9019 cut-off events. For 644/644 co-relation queries the response was YES. Maximal size of possible extension queue 318. Compared 45873 event pairs, 4648 based on Foata normal form. 1/6907 useless extension candidates. Maximal degree in co-relation 18137. Up to 8700 conditions per place. [2023-08-03 19:35:32,736 INFO L140 encePairwiseOnDemand]: 744/751 looper letters, 49 selfloop transitions, 18 changer transitions 0/73 dead transitions. [2023-08-03 19:35:32,737 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 73 transitions, 432 flow [2023-08-03 19:35:32,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-03 19:35:32,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-03 19:35:32,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2219 transitions. [2023-08-03 19:35:32,742 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.422103861517976 [2023-08-03 19:35:32,742 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2219 transitions. [2023-08-03 19:35:32,742 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2219 transitions. [2023-08-03 19:35:32,743 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:35:32,743 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2219 transitions. [2023-08-03 19:35:32,748 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 317.0) internal successors, (2219), 7 states have internal predecessors, (2219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:35:32,755 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 751.0) internal successors, (6008), 8 states have internal predecessors, (6008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:35:32,758 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 751.0) internal successors, (6008), 8 states have internal predecessors, (6008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:35:32,758 INFO L175 Difference]: Start difference. First operand has 60 places, 70 transitions, 280 flow. Second operand 7 states and 2219 transitions. [2023-08-03 19:35:32,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 73 transitions, 432 flow [2023-08-03 19:35:32,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 73 transitions, 408 flow, removed 9 selfloop flow, removed 1 redundant places. [2023-08-03 19:35:32,762 INFO L231 Difference]: Finished difference. Result has 66 places, 73 transitions, 324 flow [2023-08-03 19:35:32,763 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=751, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=324, PETRI_PLACES=66, PETRI_TRANSITIONS=73} [2023-08-03 19:35:32,763 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 15 predicate places. [2023-08-03 19:35:32,763 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 73 transitions, 324 flow [2023-08-03 19:35:32,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 308.5882352941176) internal successors, (5246), 17 states have internal predecessors, (5246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:35:32,766 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:35:32,766 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:35:32,774 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-03 19:35:32,971 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,SelfDestructingSolverStorable2 [2023-08-03 19:35:32,972 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:35:32,972 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:35:32,972 INFO L85 PathProgramCache]: Analyzing trace with hash 506752760, now seen corresponding path program 3 times [2023-08-03 19:35:32,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:35:32,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324417766] [2023-08-03 19:35:32,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:35:32,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:35:33,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 19:35:33,043 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 19:35:33,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 19:35:33,104 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 19:35:33,105 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 19:35:33,106 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2023-08-03 19:35:33,107 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2023-08-03 19:35:33,108 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-03 19:35:33,108 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-03 19:35:33,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-03 19:35:33,108 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1] [2023-08-03 19:35:33,110 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 19:35:33,110 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 19:35:33,169 INFO L144 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2023-08-03 19:35:33,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 459 places, 513 transitions, 1116 flow [2023-08-03 19:35:34,191 INFO L124 PetriNetUnfolderBase]: 976/5128 cut-off events. [2023-08-03 19:35:34,191 INFO L125 PetriNetUnfolderBase]: For 602/632 co-relation queries the response was YES. [2023-08-03 19:35:34,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5802 conditions, 5128 events. 976/5128 cut-off events. For 602/632 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 45369 event pairs, 22 based on Foata normal form. 0/4396 useless extension candidates. Maximal degree in co-relation 3118. Up to 192 conditions per place. [2023-08-03 19:35:34,297 INFO L82 GeneralOperation]: Start removeDead. Operand has 459 places, 513 transitions, 1116 flow [2023-08-03 19:35:34,343 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 459 places, 513 transitions, 1116 flow [2023-08-03 19:35:34,343 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 19:35:34,343 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 459 places, 513 transitions, 1116 flow [2023-08-03 19:35:34,343 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 459 places, 513 transitions, 1116 flow [2023-08-03 19:35:34,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 459 places, 513 transitions, 1116 flow [2023-08-03 19:35:35,171 INFO L124 PetriNetUnfolderBase]: 976/5128 cut-off events. [2023-08-03 19:35:35,171 INFO L125 PetriNetUnfolderBase]: For 602/632 co-relation queries the response was YES. [2023-08-03 19:35:35,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5802 conditions, 5128 events. 976/5128 cut-off events. For 602/632 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 45369 event pairs, 22 based on Foata normal form. 0/4396 useless extension candidates. Maximal degree in co-relation 3118. Up to 192 conditions per place. [2023-08-03 19:35:35,581 INFO L119 LiptonReduction]: Number of co-enabled transitions 108000 [2023-08-03 19:35:45,097 INFO L134 LiptonReduction]: Checked pairs total: 166349 [2023-08-03 19:35:45,097 INFO L136 LiptonReduction]: Total number of compositions: 536 [2023-08-03 19:35:45,099 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 19:35:45,100 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;@2580437, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 19:35:45,100 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-03 19:35:45,103 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 19:35:45,103 INFO L124 PetriNetUnfolderBase]: 3/36 cut-off events. [2023-08-03 19:35:45,104 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-03 19:35:45,104 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:35:45,104 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:35:45,104 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:35:45,104 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:35:45,104 INFO L85 PathProgramCache]: Analyzing trace with hash -2042831566, now seen corresponding path program 1 times [2023-08-03 19:35:45,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:35:45,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51619599] [2023-08-03 19:35:45,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:35:45,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:35:45,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:35:45,137 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 19:35:45,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:35:45,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51619599] [2023-08-03 19:35:45,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51619599] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:35:45,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 19:35:45,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-03 19:35:45,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241419047] [2023-08-03 19:35:45,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:35:45,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 19:35:45,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:35:45,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 19:35:45,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 19:35:45,149 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 444 out of 1049 [2023-08-03 19:35:45,150 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 99 transitions, 288 flow. Second operand has 3 states, 3 states have (on average 447.3333333333333) internal successors, (1342), 3 states have internal predecessors, (1342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:35:45,150 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:35:45,150 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 444 of 1049 [2023-08-03 19:35:45,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand