/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/added_bound_to_unbounded/pthread-ext_31_simple_loop5_vs_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 15:49:43,439 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 15:49:43,510 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 15:49:43,516 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 15:49:43,516 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 15:49:43,517 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 15:49:43,517 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 15:49:43,552 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 15:49:43,553 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 15:49:43,556 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 15:49:43,557 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 15:49:43,557 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 15:49:43,558 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 15:49:43,559 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 15:49:43,559 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 15:49:43,560 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 15:49:43,560 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 15:49:43,560 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 15:49:43,560 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 15:49:43,560 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 15:49:43,561 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 15:49:43,561 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 15:49:43,561 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 15:49:43,561 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 15:49:43,561 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 15:49:43,562 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 15:49:43,562 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 15:49:43,562 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 15:49:43,563 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 15:49:43,563 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 15:49:43,564 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 15:49:43,564 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 15:49:43,564 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 15:49:43,564 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 15:49:43,564 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 15:49:43,564 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 15:49:43,564 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 15:49:43,565 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 15:49:43,565 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 15:49:43,565 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 15:49:43,565 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 15:49:43,565 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> TOGETHER [2023-08-03 15:49:43,782 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 15:49:43,805 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 15:49:43,807 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 15:49:43,808 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 15:49:43,809 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 15:49:43,809 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/pthread-ext_31_simple_loop5_vs_bound2.i [2023-08-03 15:49:45,009 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 15:49:45,268 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 15:49:45,269 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/pthread-ext_31_simple_loop5_vs_bound2.i [2023-08-03 15:49:45,288 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4c7bc4e93/69725f508c744aa693b8b3012aecbc06/FLAG9a7450489 [2023-08-03 15:49:45,299 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4c7bc4e93/69725f508c744aa693b8b3012aecbc06 [2023-08-03 15:49:45,301 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 15:49:45,302 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 15:49:45,303 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 15:49:45,303 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 15:49:45,307 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 15:49:45,307 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 03:49:45" (1/1) ... [2023-08-03 15:49:45,308 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44e686b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:49:45, skipping insertion in model container [2023-08-03 15:49:45,308 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 03:49:45" (1/1) ... [2023-08-03 15:49:45,356 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 15:49:45,614 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/pthread-ext_31_simple_loop5_vs_bound2.i[30438,30451] [2023-08-03 15:49:45,622 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 15:49:45,630 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 15:49:45,663 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [253] [2023-08-03 15:49:45,665 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [253] [2023-08-03 15:49:45,675 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/pthread-ext_31_simple_loop5_vs_bound2.i[30438,30451] [2023-08-03 15:49:45,678 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 15:49:45,712 INFO L206 MainTranslator]: Completed translation [2023-08-03 15:49:45,712 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:49:45 WrapperNode [2023-08-03 15:49:45,712 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 15:49:45,713 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 15:49:45,714 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 15:49:45,714 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 15:49:45,719 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:49:45" (1/1) ... [2023-08-03 15:49:45,742 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:49:45" (1/1) ... [2023-08-03 15:49:45,758 INFO L138 Inliner]: procedures = 170, calls = 18, calls flagged for inlining = 8, calls inlined = 10, statements flattened = 87 [2023-08-03 15:49:45,759 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 15:49:45,759 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 15:49:45,760 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 15:49:45,760 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 15:49:45,767 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:49:45" (1/1) ... [2023-08-03 15:49:45,767 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:49:45" (1/1) ... [2023-08-03 15:49:45,773 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:49:45" (1/1) ... [2023-08-03 15:49:45,773 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:49:45" (1/1) ... [2023-08-03 15:49:45,779 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:49:45" (1/1) ... [2023-08-03 15:49:45,782 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:49:45" (1/1) ... [2023-08-03 15:49:45,784 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:49:45" (1/1) ... [2023-08-03 15:49:45,785 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:49:45" (1/1) ... [2023-08-03 15:49:45,787 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 15:49:45,788 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 15:49:45,788 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 15:49:45,788 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 15:49:45,789 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:49:45" (1/1) ... [2023-08-03 15:49:45,794 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 15:49:45,805 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 15:49:45,823 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 15:49:45,837 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 15:49:45,861 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2023-08-03 15:49:45,861 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2023-08-03 15:49:45,861 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-08-03 15:49:45,861 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-08-03 15:49:45,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 15:49:45,861 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 15:49:45,861 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 15:49:45,863 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 15:49:45,863 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 15:49:45,863 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 15:49:45,863 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 15:49:45,865 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 15:49:46,005 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 15:49:46,007 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 15:49:46,115 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 15:49:46,156 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 15:49:46,156 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-08-03 15:49:46,158 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 03:49:46 BoogieIcfgContainer [2023-08-03 15:49:46,158 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 15:49:46,160 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 15:49:46,160 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 15:49:46,163 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 15:49:46,163 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 03:49:45" (1/3) ... [2023-08-03 15:49:46,164 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fb70da4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 03:49:46, skipping insertion in model container [2023-08-03 15:49:46,164 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:49:45" (2/3) ... [2023-08-03 15:49:46,164 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fb70da4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 03:49:46, skipping insertion in model container [2023-08-03 15:49:46,164 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 03:49:46" (3/3) ... [2023-08-03 15:49:46,165 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-ext_31_simple_loop5_vs_bound2.i [2023-08-03 15:49:46,170 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 15:49:46,177 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 15:49:46,177 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-03 15:49:46,177 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 15:49:46,224 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 15:49:46,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 65 places, 65 transitions, 140 flow [2023-08-03 15:49:46,284 INFO L124 PetriNetUnfolderBase]: 7/74 cut-off events. [2023-08-03 15:49:46,284 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 15:49:46,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 74 events. 7/74 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 94 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 58. Up to 4 conditions per place. [2023-08-03 15:49:46,289 INFO L82 GeneralOperation]: Start removeDead. Operand has 65 places, 65 transitions, 140 flow [2023-08-03 15:49:46,292 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 64 places, 64 transitions, 136 flow [2023-08-03 15:49:46,295 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 15:49:46,302 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 64 places, 64 transitions, 136 flow [2023-08-03 15:49:46,305 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 64 places, 64 transitions, 136 flow [2023-08-03 15:49:46,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 64 places, 64 transitions, 136 flow [2023-08-03 15:49:46,325 INFO L124 PetriNetUnfolderBase]: 7/74 cut-off events. [2023-08-03 15:49:46,325 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 15:49:46,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 74 events. 7/74 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 94 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 58. Up to 4 conditions per place. [2023-08-03 15:49:46,328 INFO L119 LiptonReduction]: Number of co-enabled transitions 1216 [2023-08-03 15:49:47,580 INFO L134 LiptonReduction]: Checked pairs total: 2162 [2023-08-03 15:49:47,581 INFO L136 LiptonReduction]: Total number of compositions: 47 [2023-08-03 15:49:47,592 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 15:49:47,597 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;@4cb46d8a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 15:49:47,597 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-03 15:49:47,602 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 15:49:47,602 INFO L124 PetriNetUnfolderBase]: 2/12 cut-off events. [2023-08-03 15:49:47,602 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 15:49:47,602 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:49:47,602 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-03 15:49:47,603 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 15:49:47,607 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:49:47,607 INFO L85 PathProgramCache]: Analyzing trace with hash 323956421, now seen corresponding path program 1 times [2023-08-03 15:49:47,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:49:47,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850509334] [2023-08-03 15:49:47,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:49:47,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:49:47,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:49:47,856 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 15:49:47,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:49:47,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850509334] [2023-08-03 15:49:47,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850509334] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 15:49:47,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 15:49:47,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-03 15:49:47,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420186189] [2023-08-03 15:49:47,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 15:49:47,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 15:49:47,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:49:47,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 15:49:47,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 15:49:47,915 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 112 [2023-08-03 15:49:47,918 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 22 transitions, 52 flow. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:49:47,918 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:49:47,918 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 112 [2023-08-03 15:49:47,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:49:48,056 INFO L124 PetriNetUnfolderBase]: 299/489 cut-off events. [2023-08-03 15:49:48,057 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-03 15:49:48,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 988 conditions, 489 events. 299/489 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1863 event pairs, 93 based on Foata normal form. 16/424 useless extension candidates. Maximal degree in co-relation 978. Up to 277 conditions per place. [2023-08-03 15:49:48,067 INFO L140 encePairwiseOnDemand]: 103/112 looper letters, 22 selfloop transitions, 4 changer transitions 0/29 dead transitions. [2023-08-03 15:49:48,067 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 29 transitions, 118 flow [2023-08-03 15:49:48,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 15:49:48,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 15:49:48,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 171 transitions. [2023-08-03 15:49:48,083 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5089285714285714 [2023-08-03 15:49:48,083 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 171 transitions. [2023-08-03 15:49:48,084 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 171 transitions. [2023-08-03 15:49:48,086 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:49:48,088 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 171 transitions. [2023-08-03 15:49:48,094 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:49:48,099 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 112.0) internal successors, (448), 4 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:49:48,100 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 112.0) internal successors, (448), 4 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:49:48,101 INFO L175 Difference]: Start difference. First operand has 25 places, 22 transitions, 52 flow. Second operand 3 states and 171 transitions. [2023-08-03 15:49:48,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 29 transitions, 118 flow [2023-08-03 15:49:48,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 29 transitions, 117 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 15:49:48,105 INFO L231 Difference]: Finished difference. Result has 26 places, 22 transitions, 77 flow [2023-08-03 15:49:48,106 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=45, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=77, PETRI_PLACES=26, PETRI_TRANSITIONS=22} [2023-08-03 15:49:48,111 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 1 predicate places. [2023-08-03 15:49:48,111 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 22 transitions, 77 flow [2023-08-03 15:49:48,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:49:48,112 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:49:48,112 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-08-03 15:49:48,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 15:49:48,112 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 15:49:48,113 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:49:48,113 INFO L85 PathProgramCache]: Analyzing trace with hash 1612429241, now seen corresponding path program 1 times [2023-08-03 15:49:48,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:49:48,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131968392] [2023-08-03 15:49:48,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:49:48,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:49:48,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 15:49:48,164 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 15:49:48,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 15:49:48,204 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 15:49:48,204 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 15:49:48,205 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2023-08-03 15:49:48,206 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2023-08-03 15:49:48,206 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-03 15:49:48,207 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2023-08-03 15:49:48,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-03 15:49:48,207 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-03 15:49:48,209 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 15:49:48,209 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 15:49:48,229 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 15:49:48,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 91 places, 92 transitions, 208 flow [2023-08-03 15:49:48,243 INFO L124 PetriNetUnfolderBase]: 10/102 cut-off events. [2023-08-03 15:49:48,243 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-03 15:49:48,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116 conditions, 102 events. 10/102 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 132 event pairs, 0 based on Foata normal form. 0/88 useless extension candidates. Maximal degree in co-relation 111. Up to 6 conditions per place. [2023-08-03 15:49:48,244 INFO L82 GeneralOperation]: Start removeDead. Operand has 91 places, 92 transitions, 208 flow [2023-08-03 15:49:48,245 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 77 places, 77 transitions, 169 flow [2023-08-03 15:49:48,245 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 15:49:48,246 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 77 transitions, 169 flow [2023-08-03 15:49:48,246 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 77 places, 77 transitions, 169 flow [2023-08-03 15:49:48,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 77 places, 77 transitions, 169 flow [2023-08-03 15:49:48,256 INFO L124 PetriNetUnfolderBase]: 10/102 cut-off events. [2023-08-03 15:49:48,257 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-03 15:49:48,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115 conditions, 102 events. 10/102 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 130 event pairs, 0 based on Foata normal form. 0/88 useless extension candidates. Maximal degree in co-relation 90. Up to 6 conditions per place. [2023-08-03 15:49:48,259 INFO L119 LiptonReduction]: Number of co-enabled transitions 2250 [2023-08-03 15:49:49,272 INFO L134 LiptonReduction]: Checked pairs total: 5577 [2023-08-03 15:49:49,272 INFO L136 LiptonReduction]: Total number of compositions: 50 [2023-08-03 15:49:49,274 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 15:49:49,275 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;@4cb46d8a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 15:49:49,275 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-08-03 15:49:49,277 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 15:49:49,277 INFO L124 PetriNetUnfolderBase]: 2/11 cut-off events. [2023-08-03 15:49:49,277 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 15:49:49,277 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:49:49,277 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-03 15:49:49,278 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-03 15:49:49,278 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:49:49,278 INFO L85 PathProgramCache]: Analyzing trace with hash 485097102, now seen corresponding path program 1 times [2023-08-03 15:49:49,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:49:49,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278510545] [2023-08-03 15:49:49,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:49:49,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:49:49,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:49:49,350 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 15:49:49,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:49:49,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278510545] [2023-08-03 15:49:49,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278510545] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 15:49:49,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 15:49:49,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-03 15:49:49,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983801639] [2023-08-03 15:49:49,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 15:49:49,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 15:49:49,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:49:49,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 15:49:49,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 15:49:49,381 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 142 [2023-08-03 15:49:49,381 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 33 transitions, 81 flow. Second operand has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 3 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:49:49,381 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:49:49,381 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 142 [2023-08-03 15:49:49,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:49:49,537 INFO L124 PetriNetUnfolderBase]: 1376/2138 cut-off events. [2023-08-03 15:49:49,538 INFO L125 PetriNetUnfolderBase]: For 63/63 co-relation queries the response was YES. [2023-08-03 15:49:49,540 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4137 conditions, 2138 events. 1376/2138 cut-off events. For 63/63 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 10589 event pairs, 292 based on Foata normal form. 28/2032 useless extension candidates. Maximal degree in co-relation 4126. Up to 1693 conditions per place. [2023-08-03 15:49:49,550 INFO L140 encePairwiseOnDemand]: 134/142 looper letters, 26 selfloop transitions, 3 changer transitions 0/39 dead transitions. [2023-08-03 15:49:49,550 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 39 transitions, 156 flow [2023-08-03 15:49:49,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 15:49:49,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 15:49:49,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 221 transitions. [2023-08-03 15:49:49,552 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5187793427230047 [2023-08-03 15:49:49,553 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 221 transitions. [2023-08-03 15:49:49,553 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 221 transitions. [2023-08-03 15:49:49,553 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:49:49,553 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 221 transitions. [2023-08-03 15:49:49,554 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:49:49,555 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 142.0) internal successors, (568), 4 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:49:49,556 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 142.0) internal successors, (568), 4 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:49:49,556 INFO L175 Difference]: Start difference. First operand has 37 places, 33 transitions, 81 flow. Second operand 3 states and 221 transitions. [2023-08-03 15:49:49,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 39 transitions, 156 flow [2023-08-03 15:49:49,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 39 transitions, 153 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-03 15:49:49,557 INFO L231 Difference]: Finished difference. Result has 36 places, 31 transitions, 89 flow [2023-08-03 15:49:49,557 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=89, PETRI_PLACES=36, PETRI_TRANSITIONS=31} [2023-08-03 15:49:49,558 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, -1 predicate places. [2023-08-03 15:49:49,558 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 31 transitions, 89 flow [2023-08-03 15:49:49,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 3 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:49:49,559 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:49:49,559 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 15:49:49,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-03 15:49:49,559 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-03 15:49:49,559 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:49:49,559 INFO L85 PathProgramCache]: Analyzing trace with hash 1560186211, now seen corresponding path program 1 times [2023-08-03 15:49:49,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:49:49,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123528021] [2023-08-03 15:49:49,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:49:49,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:49:49,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:49:49,682 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 15:49:49,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:49:49,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123528021] [2023-08-03 15:49:49,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123528021] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 15:49:49,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 15:49:49,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-03 15:49:49,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747898784] [2023-08-03 15:49:49,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 15:49:49,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 15:49:49,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:49:49,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 15:49:49,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 15:49:49,692 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 142 [2023-08-03 15:49:49,692 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 31 transitions, 89 flow. Second operand has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:49:49,692 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:49:49,692 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 142 [2023-08-03 15:49:49,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:49:49,765 INFO L124 PetriNetUnfolderBase]: 209/597 cut-off events. [2023-08-03 15:49:49,766 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2023-08-03 15:49:49,767 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1097 conditions, 597 events. 209/597 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 3268 event pairs, 49 based on Foata normal form. 176/732 useless extension candidates. Maximal degree in co-relation 1084. Up to 231 conditions per place. [2023-08-03 15:49:49,769 INFO L140 encePairwiseOnDemand]: 136/142 looper letters, 15 selfloop transitions, 6 changer transitions 0/37 dead transitions. [2023-08-03 15:49:49,769 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 37 transitions, 151 flow [2023-08-03 15:49:49,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 15:49:49,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 15:49:49,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 222 transitions. [2023-08-03 15:49:49,771 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5211267605633803 [2023-08-03 15:49:49,771 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 222 transitions. [2023-08-03 15:49:49,771 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 222 transitions. [2023-08-03 15:49:49,771 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:49:49,772 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 222 transitions. [2023-08-03 15:49:49,772 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 74.0) internal successors, (222), 3 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:49:49,774 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 142.0) internal successors, (568), 4 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:49:49,774 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 142.0) internal successors, (568), 4 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:49:49,774 INFO L175 Difference]: Start difference. First operand has 36 places, 31 transitions, 89 flow. Second operand 3 states and 222 transitions. [2023-08-03 15:49:49,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 37 transitions, 151 flow [2023-08-03 15:49:49,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 37 transitions, 148 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 15:49:49,776 INFO L231 Difference]: Finished difference. Result has 37 places, 31 transitions, 98 flow [2023-08-03 15:49:49,776 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=37, PETRI_TRANSITIONS=31} [2023-08-03 15:49:49,777 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 0 predicate places. [2023-08-03 15:49:49,777 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 31 transitions, 98 flow [2023-08-03 15:49:49,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:49:49,777 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:49:49,778 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1] [2023-08-03 15:49:49,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-03 15:49:49,778 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-03 15:49:49,778 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:49:49,778 INFO L85 PathProgramCache]: Analyzing trace with hash -158717328, now seen corresponding path program 1 times [2023-08-03 15:49:49,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:49:49,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718258104] [2023-08-03 15:49:49,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:49:49,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:49:49,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:49:49,833 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 15:49:49,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:49:49,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718258104] [2023-08-03 15:49:49,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718258104] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 15:49:49,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [867946684] [2023-08-03 15:49:49,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:49:49,835 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 15:49:49,835 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 15:49:49,841 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 15:49:49,849 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 15:49:49,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:49:49,917 INFO L262 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 15:49:49,918 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 15:49:49,966 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 15:49:49,966 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 15:49:49,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [867946684] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 15:49:49,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 15:49:49,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2023-08-03 15:49:49,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822223479] [2023-08-03 15:49:49,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 15:49:49,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 15:49:49,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:49:49,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 15:49:49,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 15:49:49,978 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 142 [2023-08-03 15:49:49,979 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 31 transitions, 98 flow. Second operand has 5 states, 5 states have (on average 64.0) internal successors, (320), 5 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:49:49,979 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:49:49,979 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 142 [2023-08-03 15:49:49,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:49:50,051 INFO L124 PetriNetUnfolderBase]: 148/347 cut-off events. [2023-08-03 15:49:50,051 INFO L125 PetriNetUnfolderBase]: For 154/154 co-relation queries the response was YES. [2023-08-03 15:49:50,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 852 conditions, 347 events. 148/347 cut-off events. For 154/154 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1604 event pairs, 14 based on Foata normal form. 0/323 useless extension candidates. Maximal degree in co-relation 839. Up to 156 conditions per place. [2023-08-03 15:49:50,053 INFO L140 encePairwiseOnDemand]: 138/142 looper letters, 28 selfloop transitions, 4 changer transitions 1/48 dead transitions. [2023-08-03 15:49:50,053 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 48 transitions, 224 flow [2023-08-03 15:49:50,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 15:49:50,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 15:49:50,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 344 transitions. [2023-08-03 15:49:50,055 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48450704225352115 [2023-08-03 15:49:50,055 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 344 transitions. [2023-08-03 15:49:50,055 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 344 transitions. [2023-08-03 15:49:50,056 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:49:50,056 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 344 transitions. [2023-08-03 15:49:50,057 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 68.8) internal successors, (344), 5 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:49:50,059 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 142.0) internal successors, (852), 6 states have internal predecessors, (852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:49:50,060 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 142.0) internal successors, (852), 6 states have internal predecessors, (852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:49:50,060 INFO L175 Difference]: Start difference. First operand has 37 places, 31 transitions, 98 flow. Second operand 5 states and 344 transitions. [2023-08-03 15:49:50,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 48 transitions, 224 flow [2023-08-03 15:49:50,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 48 transitions, 205 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-03 15:49:50,063 INFO L231 Difference]: Finished difference. Result has 41 places, 32 transitions, 112 flow [2023-08-03 15:49:50,063 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=87, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=112, PETRI_PLACES=41, PETRI_TRANSITIONS=32} [2023-08-03 15:49:50,064 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 4 predicate places. [2023-08-03 15:49:50,065 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 32 transitions, 112 flow [2023-08-03 15:49:50,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 64.0) internal successors, (320), 5 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:49:50,065 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:49:50,065 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 15:49:50,075 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 15:49:50,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 15:49:50,271 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-03 15:49:50,272 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:49:50,272 INFO L85 PathProgramCache]: Analyzing trace with hash -1572442982, now seen corresponding path program 1 times [2023-08-03 15:49:50,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:49:50,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435110235] [2023-08-03 15:49:50,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:49:50,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:49:50,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:49:50,354 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 15:49:50,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:49:50,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435110235] [2023-08-03 15:49:50,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435110235] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 15:49:50,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 15:49:50,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-03 15:49:50,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022589885] [2023-08-03 15:49:50,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 15:49:50,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 15:49:50,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:49:50,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 15:49:50,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-03 15:49:50,407 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 142 [2023-08-03 15:49:50,408 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 32 transitions, 112 flow. Second operand has 5 states, 5 states have (on average 56.4) internal successors, (282), 5 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:49:50,408 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:49:50,408 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 142 [2023-08-03 15:49:50,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:49:50,563 INFO L124 PetriNetUnfolderBase]: 398/874 cut-off events. [2023-08-03 15:49:50,563 INFO L125 PetriNetUnfolderBase]: For 835/836 co-relation queries the response was YES. [2023-08-03 15:49:50,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2446 conditions, 874 events. 398/874 cut-off events. For 835/836 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 4717 event pairs, 42 based on Foata normal form. 10/881 useless extension candidates. Maximal degree in co-relation 2430. Up to 416 conditions per place. [2023-08-03 15:49:50,569 INFO L140 encePairwiseOnDemand]: 134/142 looper letters, 59 selfloop transitions, 9 changer transitions 0/74 dead transitions. [2023-08-03 15:49:50,569 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 74 transitions, 434 flow [2023-08-03 15:49:50,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-03 15:49:50,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-03 15:49:50,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 383 transitions. [2023-08-03 15:49:50,571 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4495305164319249 [2023-08-03 15:49:50,571 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 383 transitions. [2023-08-03 15:49:50,571 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 383 transitions. [2023-08-03 15:49:50,572 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:49:50,572 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 383 transitions. [2023-08-03 15:49:50,573 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 63.833333333333336) internal successors, (383), 6 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:49:50,575 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 142.0) internal successors, (994), 7 states have internal predecessors, (994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:49:50,575 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 142.0) internal successors, (994), 7 states have internal predecessors, (994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:49:50,575 INFO L175 Difference]: Start difference. First operand has 41 places, 32 transitions, 112 flow. Second operand 6 states and 383 transitions. [2023-08-03 15:49:50,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 74 transitions, 434 flow [2023-08-03 15:49:50,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 74 transitions, 433 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 15:49:50,578 INFO L231 Difference]: Finished difference. Result has 48 places, 38 transitions, 171 flow [2023-08-03 15:49:50,578 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=111, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=171, PETRI_PLACES=48, PETRI_TRANSITIONS=38} [2023-08-03 15:49:50,579 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 11 predicate places. [2023-08-03 15:49:50,579 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 38 transitions, 171 flow [2023-08-03 15:49:50,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 56.4) internal successors, (282), 5 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:49:50,579 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:49:50,580 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 15:49:50,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-03 15:49:50,580 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-03 15:49:50,580 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:49:50,580 INFO L85 PathProgramCache]: Analyzing trace with hash 100644953, now seen corresponding path program 2 times [2023-08-03 15:49:50,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:49:50,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704698880] [2023-08-03 15:49:50,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:49:50,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:49:50,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:49:50,709 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 15:49:50,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:49:50,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704698880] [2023-08-03 15:49:50,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704698880] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 15:49:50,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1011151929] [2023-08-03 15:49:50,710 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-03 15:49:50,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 15:49:50,710 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 15:49:50,712 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 15:49:50,733 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 15:49:50,795 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-03 15:49:50,795 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-03 15:49:50,796 INFO L262 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-03 15:49:50,799 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 15:49:50,951 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 15:49:50,952 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 15:49:51,055 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 15:49:51,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1011151929] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 15:49:51,056 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 15:49:51,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 18 [2023-08-03 15:49:51,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133041389] [2023-08-03 15:49:51,056 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 15:49:51,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-03 15:49:51,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:49:51,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-03 15:49:51,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2023-08-03 15:49:51,216 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 142 [2023-08-03 15:49:51,217 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 38 transitions, 171 flow. Second operand has 20 states, 20 states have (on average 55.85) internal successors, (1117), 20 states have internal predecessors, (1117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:49:51,218 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:49:51,218 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 142 [2023-08-03 15:49:51,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:49:51,603 INFO L124 PetriNetUnfolderBase]: 629/1316 cut-off events. [2023-08-03 15:49:51,603 INFO L125 PetriNetUnfolderBase]: For 1438/1438 co-relation queries the response was YES. [2023-08-03 15:49:51,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4195 conditions, 1316 events. 629/1316 cut-off events. For 1438/1438 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 7371 event pairs, 33 based on Foata normal form. 13/1327 useless extension candidates. Maximal degree in co-relation 4175. Up to 449 conditions per place. [2023-08-03 15:49:51,612 INFO L140 encePairwiseOnDemand]: 132/142 looper letters, 96 selfloop transitions, 19 changer transitions 0/120 dead transitions. [2023-08-03 15:49:51,612 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 120 transitions, 795 flow [2023-08-03 15:49:51,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-03 15:49:51,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-03 15:49:51,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 679 transitions. [2023-08-03 15:49:51,615 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4346991037131882 [2023-08-03 15:49:51,615 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 679 transitions. [2023-08-03 15:49:51,615 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 679 transitions. [2023-08-03 15:49:51,615 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:49:51,615 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 679 transitions. [2023-08-03 15:49:51,617 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 61.72727272727273) internal successors, (679), 11 states have internal predecessors, (679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:49:51,619 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 142.0) internal successors, (1704), 12 states have internal predecessors, (1704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:49:51,619 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 142.0) internal successors, (1704), 12 states have internal predecessors, (1704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:49:51,619 INFO L175 Difference]: Start difference. First operand has 48 places, 38 transitions, 171 flow. Second operand 11 states and 679 transitions. [2023-08-03 15:49:51,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 120 transitions, 795 flow [2023-08-03 15:49:51,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 120 transitions, 785 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-03 15:49:51,625 INFO L231 Difference]: Finished difference. Result has 61 places, 48 transitions, 276 flow [2023-08-03 15:49:51,625 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=161, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=276, PETRI_PLACES=61, PETRI_TRANSITIONS=48} [2023-08-03 15:49:51,625 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 24 predicate places. [2023-08-03 15:49:51,626 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 48 transitions, 276 flow [2023-08-03 15:49:51,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 55.85) internal successors, (1117), 20 states have internal predecessors, (1117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:49:51,626 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:49:51,626 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 15:49:51,635 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 15:49:51,831 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,SelfDestructingSolverStorable6 [2023-08-03 15:49:51,832 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-03 15:49:51,832 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:49:51,832 INFO L85 PathProgramCache]: Analyzing trace with hash -1802176276, now seen corresponding path program 3 times [2023-08-03 15:49:51,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:49:51,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425003189] [2023-08-03 15:49:51,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:49:51,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:49:51,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:49:51,993 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 15:49:51,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:49:51,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425003189] [2023-08-03 15:49:51,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425003189] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 15:49:51,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [933899649] [2023-08-03 15:49:51,994 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-03 15:49:51,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 15:49:51,994 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 15:49:51,996 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 15:49:52,030 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-03 15:49:52,082 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-03 15:49:52,082 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-03 15:49:52,083 INFO L262 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-03 15:49:52,085 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 15:49:52,268 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 15:49:52,268 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 15:49:52,427 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 15:49:52,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [933899649] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 15:49:52,427 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 15:49:52,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 25 [2023-08-03 15:49:52,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522553881] [2023-08-03 15:49:52,428 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 15:49:52,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-08-03 15:49:52,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:49:52,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-08-03 15:49:52,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=628, Unknown=0, NotChecked=0, Total=702 [2023-08-03 15:49:52,497 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 142 [2023-08-03 15:49:52,499 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 48 transitions, 276 flow. Second operand has 27 states, 27 states have (on average 53.77777777777778) internal successors, (1452), 27 states have internal predecessors, (1452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:49:52,499 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:49:52,499 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 142 [2023-08-03 15:49:52,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:49:53,605 INFO L124 PetriNetUnfolderBase]: 1064/2173 cut-off events. [2023-08-03 15:49:53,605 INFO L125 PetriNetUnfolderBase]: For 3133/3133 co-relation queries the response was YES. [2023-08-03 15:49:53,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7829 conditions, 2173 events. 1064/2173 cut-off events. For 3133/3133 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 12408 event pairs, 42 based on Foata normal form. 39/2210 useless extension candidates. Maximal degree in co-relation 7804. Up to 591 conditions per place. [2023-08-03 15:49:53,613 INFO L140 encePairwiseOnDemand]: 132/142 looper letters, 0 selfloop transitions, 0 changer transitions 154/154 dead transitions. [2023-08-03 15:49:53,613 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 154 transitions, 1134 flow [2023-08-03 15:49:53,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-03 15:49:53,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-03 15:49:53,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 876 transitions. [2023-08-03 15:49:53,617 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4112676056338028 [2023-08-03 15:49:53,617 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 876 transitions. [2023-08-03 15:49:53,617 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 876 transitions. [2023-08-03 15:49:53,618 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:49:53,618 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 876 transitions. [2023-08-03 15:49:53,620 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 58.4) internal successors, (876), 15 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:49:53,624 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 142.0) internal successors, (2272), 16 states have internal predecessors, (2272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:49:53,625 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 142.0) internal successors, (2272), 16 states have internal predecessors, (2272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:49:53,625 INFO L175 Difference]: Start difference. First operand has 61 places, 48 transitions, 276 flow. Second operand 15 states and 876 transitions. [2023-08-03 15:49:53,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 154 transitions, 1134 flow [2023-08-03 15:49:53,633 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 154 transitions, 1100 flow, removed 8 selfloop flow, removed 5 redundant places. [2023-08-03 15:49:53,635 INFO L231 Difference]: Finished difference. Result has 69 places, 0 transitions, 0 flow [2023-08-03 15:49:53,635 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=0, PETRI_PLACES=69, PETRI_TRANSITIONS=0} [2023-08-03 15:49:53,636 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 32 predicate places. [2023-08-03 15:49:53,637 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 0 transitions, 0 flow [2023-08-03 15:49:53,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 53.77777777777778) internal successors, (1452), 27 states have internal predecessors, (1452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:49:53,637 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2023-08-03 15:49:53,638 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 5 remaining) [2023-08-03 15:49:53,638 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2023-08-03 15:49:53,638 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2023-08-03 15:49:53,638 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2023-08-03 15:49:53,652 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-03 15:49:53,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 15:49:53,844 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1] [2023-08-03 15:49:53,846 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-03 15:49:53,847 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-03 15:49:53,849 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.08 03:49:53 BasicIcfg [2023-08-03 15:49:53,849 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-03 15:49:53,850 INFO L158 Benchmark]: Toolchain (without parser) took 8547.44ms. Allocated memory was 604.0MB in the beginning and 725.6MB in the end (delta: 121.6MB). Free memory was 545.4MB in the beginning and 651.1MB in the end (delta: -105.7MB). Peak memory consumption was 350.8MB. Max. memory is 16.0GB. [2023-08-03 15:49:53,850 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 331.4MB. Free memory was 276.4MB in the beginning and 276.2MB in the end (delta: 167.8kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-03 15:49:53,850 INFO L158 Benchmark]: CACSL2BoogieTranslator took 409.31ms. Allocated memory is still 604.0MB. Free memory was 545.4MB in the beginning and 526.2MB in the end (delta: 19.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-03 15:49:53,850 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.63ms. Allocated memory is still 604.0MB. Free memory was 526.2MB in the beginning and 524.1MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 15:49:53,851 INFO L158 Benchmark]: Boogie Preprocessor took 27.60ms. Allocated memory is still 604.0MB. Free memory was 524.1MB in the beginning and 522.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 15:49:53,852 INFO L158 Benchmark]: RCFGBuilder took 370.60ms. Allocated memory is still 604.0MB. Free memory was 522.4MB in the beginning and 506.4MB in the end (delta: 16.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. [2023-08-03 15:49:53,852 INFO L158 Benchmark]: TraceAbstraction took 7689.15ms. Allocated memory was 604.0MB in the beginning and 725.6MB in the end (delta: 121.6MB). Free memory was 505.6MB in the beginning and 651.1MB in the end (delta: -145.5MB). Peak memory consumption was 311.0MB. Max. memory is 16.0GB. [2023-08-03 15:49:53,854 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 331.4MB. Free memory was 276.4MB in the beginning and 276.2MB in the end (delta: 167.8kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 409.31ms. Allocated memory is still 604.0MB. Free memory was 545.4MB in the beginning and 526.2MB in the end (delta: 19.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 45.63ms. Allocated memory is still 604.0MB. Free memory was 526.2MB in the beginning and 524.1MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 27.60ms. Allocated memory is still 604.0MB. Free memory was 524.1MB in the beginning and 522.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 370.60ms. Allocated memory is still 604.0MB. Free memory was 522.4MB in the beginning and 506.4MB in the end (delta: 16.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. * TraceAbstraction took 7689.15ms. Allocated memory was 604.0MB in the beginning and 725.6MB in the end (delta: 121.6MB). Free memory was 505.6MB in the beginning and 651.1MB in the end (delta: -145.5MB). Peak memory consumption was 311.0MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 253]: Unsoundness Warning unspecified type, defaulting to int C: short [253] - GenericResultAtLocation [Line: 253]: Unsoundness Warning unspecified type, defaulting to int C: short [253] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.3s, 64 PlacesBefore, 25 PlacesAfterwards, 64 TransitionsBefore, 22 TransitionsAfterwards, 1216 CoEnabledTransitionPairs, 5 FixpointIterations, 17 TrivialSequentialCompositions, 20 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 3 ChoiceCompositions, 47 TotalNumberOfCompositions, 2162 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1376, independent: 1289, independent conditional: 0, independent unconditional: 1289, dependent: 87, dependent conditional: 0, dependent unconditional: 87, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 615, independent: 600, independent conditional: 0, independent unconditional: 600, dependent: 15, dependent conditional: 0, dependent unconditional: 15, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1376, independent: 689, independent conditional: 0, independent unconditional: 689, dependent: 72, dependent conditional: 0, dependent unconditional: 72, unknown: 615, unknown conditional: 0, unknown unconditional: 615] , Statistics on independence cache: Total cache size (in pairs): 78, Positive cache size: 68, Positive conditional cache size: 0, Positive unconditional cache size: 68, Negative cache size: 10, Negative conditional cache size: 0, Negative unconditional cache size: 10, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.0s, 77 PlacesBefore, 37 PlacesAfterwards, 77 TransitionsBefore, 33 TransitionsAfterwards, 2250 CoEnabledTransitionPairs, 5 FixpointIterations, 17 TrivialSequentialCompositions, 20 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 4 ChoiceCompositions, 50 TotalNumberOfCompositions, 5577 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1976, independent: 1818, independent conditional: 0, independent unconditional: 1818, dependent: 158, dependent conditional: 0, dependent unconditional: 158, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 974, independent: 958, independent conditional: 0, independent unconditional: 958, dependent: 16, dependent conditional: 0, dependent unconditional: 16, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1976, independent: 860, independent conditional: 0, independent unconditional: 860, dependent: 142, dependent conditional: 0, dependent unconditional: 142, unknown: 974, unknown conditional: 0, unknown unconditional: 974] , Statistics on independence cache: Total cache size (in pairs): 97, Positive cache size: 83, Positive conditional cache size: 0, Positive unconditional cache size: 83, Negative cache size: 14, Negative conditional cache size: 0, Negative unconditional cache size: 14, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 720]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 83 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 2.0s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 20 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 11 mSDsluCounter, 1 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 33 IncrementalHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 1 mSDtfsCounter, 33 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=77occurred in iteration=1, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 13 NumberOfCodeBlocks, 13 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 4 ConstructedInterpolants, 0 QuantifiedInterpolants, 16 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data with 2 thread instances CFG has 7 procedures, 105 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 5.6s, OverallIterations: 6, TraceHistogramMax: 3, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 2.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 882 SdHoareTripleChecker+Valid, 1.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 839 mSDsluCounter, 76 SdHoareTripleChecker+Invalid, 1.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 66 mSDsCounter, 93 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2765 IncrementalHoareTripleChecker+Invalid, 2858 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 93 mSolverCounterUnsat, 10 mSDtfsCounter, 2765 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 152 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 310 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=276occurred in iteration=5, InterpolantAutomatonStates: 43, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 154 NumberOfCodeBlocks, 154 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 191 ConstructedInterpolants, 0 QuantifiedInterpolants, 964 SizeOfPredicates, 13 NumberOfNonLiveVariables, 408 ConjunctsInSsa, 23 ConjunctsInUnsatCore, 11 InterpolantComputations, 4 PerfectInterpolantSequences, 11/88 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-03 15:49:53,871 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...