/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf --rcfgbuilder.only.consider.context.switches.at.boundaries.of.atomic.blocks true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-atomic/szymanski.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.dk.datarace-free-lbe-02cf818-m [2023-11-17 11:17:34,921 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-17 11:17:35,008 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf [2023-11-17 11:17:35,040 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-17 11:17:35,041 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-17 11:17:35,042 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-17 11:17:35,042 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-17 11:17:35,043 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-17 11:17:35,043 INFO L153 SettingsManager]: * Use SBE=true [2023-11-17 11:17:35,046 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-17 11:17:35,047 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-17 11:17:35,047 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-17 11:17:35,048 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-17 11:17:35,049 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-17 11:17:35,049 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-17 11:17:35,049 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-17 11:17:35,049 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-17 11:17:35,050 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-17 11:17:35,050 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-17 11:17:35,050 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-17 11:17:35,050 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-17 11:17:35,051 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-17 11:17:35,051 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-17 11:17:35,051 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-17 11:17:35,052 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-17 11:17:35,053 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 11:17:35,053 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-17 11:17:35,053 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-17 11:17:35,054 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-17 11:17:35,054 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-17 11:17:35,055 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-17 11:17:35,055 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-17 11:17:35,055 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Only consider context switches at boundaries of atomic blocks -> true [2023-11-17 11:17:35,291 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-17 11:17:35,317 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-17 11:17:35,319 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-17 11:17:35,320 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-17 11:17:35,320 INFO L274 PluginConnector]: CDTParser initialized [2023-11-17 11:17:35,321 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/szymanski.i [2023-11-17 11:17:36,473 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-17 11:17:36,750 INFO L384 CDTParser]: Found 1 translation units. [2023-11-17 11:17:36,751 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/szymanski.i [2023-11-17 11:17:36,764 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/69488dd2f/5bf87075b6894c428c0fe51858d44c6e/FLAG9e7063c31 [2023-11-17 11:17:36,777 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/69488dd2f/5bf87075b6894c428c0fe51858d44c6e [2023-11-17 11:17:36,780 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-17 11:17:36,781 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-17 11:17:36,783 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-17 11:17:36,783 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-17 11:17:36,787 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-17 11:17:36,788 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 11:17:36" (1/1) ... [2023-11-17 11:17:36,789 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49f1972b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:17:36, skipping insertion in model container [2023-11-17 11:17:36,789 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 11:17:36" (1/1) ... [2023-11-17 11:17:36,843 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-17 11:17:36,996 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-17 11:17:37,153 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/szymanski.i[31505,31518] [2023-11-17 11:17:37,162 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/szymanski.i[32915,32928] [2023-11-17 11:17:37,170 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 11:17:37,183 INFO L202 MainTranslator]: Completed pre-run [2023-11-17 11:17:37,207 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-17 11:17:37,227 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/szymanski.i[31505,31518] [2023-11-17 11:17:37,230 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/szymanski.i[32915,32928] [2023-11-17 11:17:37,240 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 11:17:37,266 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 11:17:37,267 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 11:17:37,267 WARN L675 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 11:17:37,274 INFO L206 MainTranslator]: Completed translation [2023-11-17 11:17:37,274 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:17:37 WrapperNode [2023-11-17 11:17:37,274 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-17 11:17:37,276 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-17 11:17:37,276 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-17 11:17:37,276 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-17 11:17:37,282 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:17:37" (1/1) ... [2023-11-17 11:17:37,310 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:17:37" (1/1) ... [2023-11-17 11:17:37,333 INFO L138 Inliner]: procedures = 171, calls = 75, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 41 [2023-11-17 11:17:37,334 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-17 11:17:37,334 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-17 11:17:37,334 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-17 11:17:37,334 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-17 11:17:37,342 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:17:37" (1/1) ... [2023-11-17 11:17:37,342 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:17:37" (1/1) ... [2023-11-17 11:17:37,354 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:17:37" (1/1) ... [2023-11-17 11:17:37,354 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:17:37" (1/1) ... [2023-11-17 11:17:37,363 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:17:37" (1/1) ... [2023-11-17 11:17:37,367 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:17:37" (1/1) ... [2023-11-17 11:17:37,369 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:17:37" (1/1) ... [2023-11-17 11:17:37,370 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:17:37" (1/1) ... [2023-11-17 11:17:37,372 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-17 11:17:37,383 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-17 11:17:37,383 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-17 11:17:37,383 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-17 11:17:37,384 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:17:37" (1/1) ... [2023-11-17 11:17:37,388 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 11:17:37,398 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 11:17:37,414 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) [2023-11-17 11:17:37,426 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 [2023-11-17 11:17:37,446 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-17 11:17:37,447 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2023-11-17 11:17:37,447 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2023-11-17 11:17:37,447 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-11-17 11:17:37,447 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-11-17 11:17:37,447 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-17 11:17:37,447 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-17 11:17:37,447 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-17 11:17:37,447 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-17 11:17:37,447 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-17 11:17:37,448 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-17 11:17:37,449 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-17 11:17:37,449 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-17 11:17:37,449 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-17 11:17:37,450 WARN L211 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-17 11:17:37,575 INFO L239 CfgBuilder]: Building ICFG [2023-11-17 11:17:37,577 INFO L265 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-17 11:17:37,748 INFO L280 CfgBuilder]: Performing block encoding [2023-11-17 11:17:37,830 INFO L302 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-17 11:17:37,831 INFO L307 CfgBuilder]: Removed 8 assume(true) statements. [2023-11-17 11:17:37,832 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 11:17:37 BoogieIcfgContainer [2023-11-17 11:17:37,832 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-17 11:17:37,835 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-17 11:17:37,835 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-17 11:17:37,837 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-17 11:17:37,838 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 11:17:36" (1/3) ... [2023-11-17 11:17:37,838 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fda5f42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 11:17:37, skipping insertion in model container [2023-11-17 11:17:37,838 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:17:37" (2/3) ... [2023-11-17 11:17:37,839 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fda5f42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 11:17:37, skipping insertion in model container [2023-11-17 11:17:37,839 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 11:17:37" (3/3) ... [2023-11-17 11:17:37,840 INFO L112 eAbstractionObserver]: Analyzing ICFG szymanski.i [2023-11-17 11:17:37,856 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-17 11:17:37,856 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-17 11:17:37,857 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-17 11:17:37,950 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-17 11:17:37,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 66 places, 71 transitions, 156 flow [2023-11-17 11:17:38,032 INFO L124 PetriNetUnfolderBase]: 12/69 cut-off events. [2023-11-17 11:17:38,032 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-17 11:17:38,038 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 69 events. 12/69 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 128 event pairs, 0 based on Foata normal form. 0/55 useless extension candidates. Maximal degree in co-relation 65. Up to 2 conditions per place. [2023-11-17 11:17:38,039 INFO L82 GeneralOperation]: Start removeDead. Operand has 66 places, 71 transitions, 156 flow [2023-11-17 11:17:38,042 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 62 places, 67 transitions, 143 flow [2023-11-17 11:17:38,045 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-17 11:17:38,056 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 62 places, 67 transitions, 143 flow [2023-11-17 11:17:38,058 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 62 places, 67 transitions, 143 flow [2023-11-17 11:17:38,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 62 places, 67 transitions, 143 flow [2023-11-17 11:17:38,074 INFO L124 PetriNetUnfolderBase]: 12/67 cut-off events. [2023-11-17 11:17:38,075 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-17 11:17:38,076 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 67 events. 12/67 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 128 event pairs, 0 based on Foata normal form. 0/53 useless extension candidates. Maximal degree in co-relation 65. Up to 2 conditions per place. [2023-11-17 11:17:38,077 INFO L119 LiptonReduction]: Number of co-enabled transitions 2160 [2023-11-17 11:17:38,734 INFO L134 LiptonReduction]: Checked pairs total: 4285 [2023-11-17 11:17:38,735 INFO L136 LiptonReduction]: Total number of compositions: 32 [2023-11-17 11:17:38,757 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-17 11:17:38,764 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=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@2eb6690f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-17 11:17:38,764 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-11-17 11:17:38,774 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-17 11:17:38,774 INFO L124 PetriNetUnfolderBase]: 9/33 cut-off events. [2023-11-17 11:17:38,774 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 11:17:38,774 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:17:38,775 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:17:38,775 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-17 11:17:38,779 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:17:38,780 INFO L85 PathProgramCache]: Analyzing trace with hash 1222322316, now seen corresponding path program 1 times [2023-11-17 11:17:38,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:17:38,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77149567] [2023-11-17 11:17:38,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:17:38,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:17:38,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:17:39,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:17:39,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:17:39,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77149567] [2023-11-17 11:17:39,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77149567] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:17:39,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:17:39,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 11:17:39,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550119809] [2023-11-17 11:17:39,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:17:39,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 11:17:39,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:17:39,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 11:17:39,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 11:17:39,041 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 103 [2023-11-17 11:17:39,042 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 45 transitions, 99 flow. Second operand has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 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) [2023-11-17 11:17:39,043 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:17:39,043 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 103 [2023-11-17 11:17:39,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:17:39,258 INFO L124 PetriNetUnfolderBase]: 858/1317 cut-off events. [2023-11-17 11:17:39,259 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2023-11-17 11:17:39,264 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2571 conditions, 1317 events. 858/1317 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 5739 event pairs, 237 based on Foata normal form. 24/829 useless extension candidates. Maximal degree in co-relation 2374. Up to 847 conditions per place. [2023-11-17 11:17:39,272 INFO L140 encePairwiseOnDemand]: 96/103 looper letters, 44 selfloop transitions, 5 changer transitions 2/62 dead transitions. [2023-11-17 11:17:39,272 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 62 transitions, 238 flow [2023-11-17 11:17:39,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 11:17:39,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 11:17:39,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 192 transitions. [2023-11-17 11:17:39,287 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6213592233009708 [2023-11-17 11:17:39,287 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 192 transitions. [2023-11-17 11:17:39,288 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 192 transitions. [2023-11-17 11:17:39,289 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:17:39,291 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 192 transitions. [2023-11-17 11:17:39,296 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 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) [2023-11-17 11:17:39,301 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 103.0) internal successors, (412), 4 states have internal predecessors, (412), 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) [2023-11-17 11:17:39,301 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 103.0) internal successors, (412), 4 states have internal predecessors, (412), 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) [2023-11-17 11:17:39,303 INFO L175 Difference]: Start difference. First operand has 41 places, 45 transitions, 99 flow. Second operand 3 states and 192 transitions. [2023-11-17 11:17:39,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 62 transitions, 238 flow [2023-11-17 11:17:39,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 62 transitions, 231 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-17 11:17:39,309 INFO L231 Difference]: Finished difference. Result has 42 places, 46 transitions, 122 flow [2023-11-17 11:17:39,310 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=103, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=122, PETRI_PLACES=42, PETRI_TRANSITIONS=46} [2023-11-17 11:17:39,313 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 1 predicate places. [2023-11-17 11:17:39,314 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 46 transitions, 122 flow [2023-11-17 11:17:39,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 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) [2023-11-17 11:17:39,314 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:17:39,314 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:17:39,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-17 11:17:39,315 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr2Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-17 11:17:39,315 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:17:39,315 INFO L85 PathProgramCache]: Analyzing trace with hash 1688998937, now seen corresponding path program 1 times [2023-11-17 11:17:39,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:17:39,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120990878] [2023-11-17 11:17:39,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:17:39,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:17:39,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:17:39,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:17:39,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:17:39,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120990878] [2023-11-17 11:17:39,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120990878] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:17:39,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:17:39,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 11:17:39,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169908080] [2023-11-17 11:17:39,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:17:39,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 11:17:39,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:17:39,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 11:17:39,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 11:17:39,423 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 103 [2023-11-17 11:17:39,423 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 46 transitions, 122 flow. Second operand has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 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) [2023-11-17 11:17:39,423 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:17:39,423 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 103 [2023-11-17 11:17:39,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:17:39,593 INFO L124 PetriNetUnfolderBase]: 802/1233 cut-off events. [2023-11-17 11:17:39,593 INFO L125 PetriNetUnfolderBase]: For 131/131 co-relation queries the response was YES. [2023-11-17 11:17:39,596 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2646 conditions, 1233 events. 802/1233 cut-off events. For 131/131 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 5331 event pairs, 240 based on Foata normal form. 28/842 useless extension candidates. Maximal degree in co-relation 1606. Up to 845 conditions per place. [2023-11-17 11:17:39,602 INFO L140 encePairwiseOnDemand]: 98/103 looper letters, 40 selfloop transitions, 4 changer transitions 6/61 dead transitions. [2023-11-17 11:17:39,602 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 61 transitions, 253 flow [2023-11-17 11:17:39,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 11:17:39,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 11:17:39,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 189 transitions. [2023-11-17 11:17:39,607 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6116504854368932 [2023-11-17 11:17:39,607 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 189 transitions. [2023-11-17 11:17:39,607 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 189 transitions. [2023-11-17 11:17:39,607 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:17:39,608 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 189 transitions. [2023-11-17 11:17:39,609 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 63.0) internal successors, (189), 3 states have internal predecessors, (189), 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) [2023-11-17 11:17:39,611 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 103.0) internal successors, (412), 4 states have internal predecessors, (412), 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) [2023-11-17 11:17:39,611 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 103.0) internal successors, (412), 4 states have internal predecessors, (412), 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) [2023-11-17 11:17:39,612 INFO L175 Difference]: Start difference. First operand has 42 places, 46 transitions, 122 flow. Second operand 3 states and 189 transitions. [2023-11-17 11:17:39,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 61 transitions, 253 flow [2023-11-17 11:17:39,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 61 transitions, 243 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-17 11:17:39,617 INFO L231 Difference]: Finished difference. Result has 43 places, 46 transitions, 126 flow [2023-11-17 11:17:39,617 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=103, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=126, PETRI_PLACES=43, PETRI_TRANSITIONS=46} [2023-11-17 11:17:39,618 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 2 predicate places. [2023-11-17 11:17:39,618 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 46 transitions, 126 flow [2023-11-17 11:17:39,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 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) [2023-11-17 11:17:39,620 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:17:39,620 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:17:39,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-17 11:17:39,620 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-17 11:17:39,621 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:17:39,621 INFO L85 PathProgramCache]: Analyzing trace with hash 897554660, now seen corresponding path program 1 times [2023-11-17 11:17:39,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:17:39,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148124215] [2023-11-17 11:17:39,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:17:39,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:17:39,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:17:39,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:17:39,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:17:39,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148124215] [2023-11-17 11:17:39,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148124215] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:17:39,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:17:39,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 11:17:39,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183031640] [2023-11-17 11:17:39,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:17:39,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 11:17:39,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:17:39,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 11:17:39,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-17 11:17:39,719 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 103 [2023-11-17 11:17:39,719 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 46 transitions, 126 flow. Second operand has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 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) [2023-11-17 11:17:39,719 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:17:39,720 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 103 [2023-11-17 11:17:39,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:17:39,963 INFO L124 PetriNetUnfolderBase]: 962/1528 cut-off events. [2023-11-17 11:17:39,963 INFO L125 PetriNetUnfolderBase]: For 248/248 co-relation queries the response was YES. [2023-11-17 11:17:39,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3290 conditions, 1528 events. 962/1528 cut-off events. For 248/248 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 6941 event pairs, 277 based on Foata normal form. 28/1155 useless extension candidates. Maximal degree in co-relation 2101. Up to 708 conditions per place. [2023-11-17 11:17:39,970 INFO L140 encePairwiseOnDemand]: 85/103 looper letters, 44 selfloop transitions, 6 changer transitions 40/96 dead transitions. [2023-11-17 11:17:39,970 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 96 transitions, 437 flow [2023-11-17 11:17:39,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 11:17:39,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 11:17:39,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 248 transitions. [2023-11-17 11:17:39,973 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4815533980582524 [2023-11-17 11:17:39,973 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 248 transitions. [2023-11-17 11:17:39,973 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 248 transitions. [2023-11-17 11:17:39,973 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:17:39,973 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 248 transitions. [2023-11-17 11:17:39,974 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 49.6) internal successors, (248), 5 states have internal predecessors, (248), 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) [2023-11-17 11:17:39,976 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 103.0) internal successors, (618), 6 states have internal predecessors, (618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:17:39,976 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 103.0) internal successors, (618), 6 states have internal predecessors, (618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:17:39,976 INFO L175 Difference]: Start difference. First operand has 43 places, 46 transitions, 126 flow. Second operand 5 states and 248 transitions. [2023-11-17 11:17:39,976 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 96 transitions, 437 flow [2023-11-17 11:17:39,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 96 transitions, 429 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 11:17:39,982 INFO L231 Difference]: Finished difference. Result has 49 places, 45 transitions, 179 flow [2023-11-17 11:17:39,982 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=103, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=179, PETRI_PLACES=49, PETRI_TRANSITIONS=45} [2023-11-17 11:17:39,983 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 8 predicate places. [2023-11-17 11:17:39,984 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 45 transitions, 179 flow [2023-11-17 11:17:39,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 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) [2023-11-17 11:17:39,984 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:17:39,984 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:17:39,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-17 11:17:39,985 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-17 11:17:39,985 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:17:39,985 INFO L85 PathProgramCache]: Analyzing trace with hash 1325935716, now seen corresponding path program 2 times [2023-11-17 11:17:39,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:17:39,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910048887] [2023-11-17 11:17:39,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:17:39,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:17:40,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:17:40,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:17:40,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:17:40,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910048887] [2023-11-17 11:17:40,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910048887] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:17:40,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:17:40,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 11:17:40,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981444851] [2023-11-17 11:17:40,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:17:40,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 11:17:40,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:17:40,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 11:17:40,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-17 11:17:40,070 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 103 [2023-11-17 11:17:40,070 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 45 transitions, 179 flow. Second operand has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 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) [2023-11-17 11:17:40,071 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:17:40,071 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 103 [2023-11-17 11:17:40,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:17:40,240 INFO L124 PetriNetUnfolderBase]: 557/942 cut-off events. [2023-11-17 11:17:40,241 INFO L125 PetriNetUnfolderBase]: For 711/713 co-relation queries the response was YES. [2023-11-17 11:17:40,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2471 conditions, 942 events. 557/942 cut-off events. For 711/713 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 4068 event pairs, 147 based on Foata normal form. 26/870 useless extension candidates. Maximal degree in co-relation 1763. Up to 377 conditions per place. [2023-11-17 11:17:40,246 INFO L140 encePairwiseOnDemand]: 85/103 looper letters, 53 selfloop transitions, 21 changer transitions 9/89 dead transitions. [2023-11-17 11:17:40,246 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 89 transitions, 553 flow [2023-11-17 11:17:40,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 11:17:40,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 11:17:40,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 237 transitions. [2023-11-17 11:17:40,248 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4601941747572815 [2023-11-17 11:17:40,248 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 237 transitions. [2023-11-17 11:17:40,248 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 237 transitions. [2023-11-17 11:17:40,248 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:17:40,248 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 237 transitions. [2023-11-17 11:17:40,249 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 47.4) internal successors, (237), 5 states have internal predecessors, (237), 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) [2023-11-17 11:17:40,250 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 103.0) internal successors, (618), 6 states have internal predecessors, (618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:17:40,250 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 103.0) internal successors, (618), 6 states have internal predecessors, (618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:17:40,250 INFO L175 Difference]: Start difference. First operand has 49 places, 45 transitions, 179 flow. Second operand 5 states and 237 transitions. [2023-11-17 11:17:40,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 89 transitions, 553 flow [2023-11-17 11:17:40,253 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 89 transitions, 488 flow, removed 32 selfloop flow, removed 1 redundant places. [2023-11-17 11:17:40,255 INFO L231 Difference]: Finished difference. Result has 56 places, 61 transitions, 351 flow [2023-11-17 11:17:40,255 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=103, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=351, PETRI_PLACES=56, PETRI_TRANSITIONS=61} [2023-11-17 11:17:40,256 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 15 predicate places. [2023-11-17 11:17:40,256 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 61 transitions, 351 flow [2023-11-17 11:17:40,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 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) [2023-11-17 11:17:40,256 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:17:40,256 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:17:40,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-17 11:17:40,257 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-17 11:17:40,257 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:17:40,257 INFO L85 PathProgramCache]: Analyzing trace with hash -981801436, now seen corresponding path program 3 times [2023-11-17 11:17:40,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:17:40,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216448087] [2023-11-17 11:17:40,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:17:40,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:17:40,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:17:40,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:17:40,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:17:40,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216448087] [2023-11-17 11:17:40,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216448087] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:17:40,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:17:40,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 11:17:40,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913586390] [2023-11-17 11:17:40,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:17:40,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 11:17:40,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:17:40,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 11:17:40,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 11:17:40,293 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 103 [2023-11-17 11:17:40,293 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 61 transitions, 351 flow. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 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) [2023-11-17 11:17:40,293 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:17:40,293 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 103 [2023-11-17 11:17:40,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:17:40,406 INFO L124 PetriNetUnfolderBase]: 497/853 cut-off events. [2023-11-17 11:17:40,407 INFO L125 PetriNetUnfolderBase]: For 1284/1286 co-relation queries the response was YES. [2023-11-17 11:17:40,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2658 conditions, 853 events. 497/853 cut-off events. For 1284/1286 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 3854 event pairs, 219 based on Foata normal form. 0/801 useless extension candidates. Maximal degree in co-relation 1871. Up to 685 conditions per place. [2023-11-17 11:17:40,412 INFO L140 encePairwiseOnDemand]: 100/103 looper letters, 68 selfloop transitions, 3 changer transitions 1/78 dead transitions. [2023-11-17 11:17:40,412 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 78 transitions, 607 flow [2023-11-17 11:17:40,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 11:17:40,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 11:17:40,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 162 transitions. [2023-11-17 11:17:40,414 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5242718446601942 [2023-11-17 11:17:40,414 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 162 transitions. [2023-11-17 11:17:40,414 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 162 transitions. [2023-11-17 11:17:40,414 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:17:40,414 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 162 transitions. [2023-11-17 11:17:40,415 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 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) [2023-11-17 11:17:40,415 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 103.0) internal successors, (412), 4 states have internal predecessors, (412), 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) [2023-11-17 11:17:40,416 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 103.0) internal successors, (412), 4 states have internal predecessors, (412), 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) [2023-11-17 11:17:40,416 INFO L175 Difference]: Start difference. First operand has 56 places, 61 transitions, 351 flow. Second operand 3 states and 162 transitions. [2023-11-17 11:17:40,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 78 transitions, 607 flow [2023-11-17 11:17:40,420 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 78 transitions, 589 flow, removed 9 selfloop flow, removed 0 redundant places. [2023-11-17 11:17:40,421 INFO L231 Difference]: Finished difference. Result has 59 places, 61 transitions, 348 flow [2023-11-17 11:17:40,421 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=103, PETRI_DIFFERENCE_MINUEND_FLOW=337, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=348, PETRI_PLACES=59, PETRI_TRANSITIONS=61} [2023-11-17 11:17:40,422 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 18 predicate places. [2023-11-17 11:17:40,422 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 61 transitions, 348 flow [2023-11-17 11:17:40,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 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) [2023-11-17 11:17:40,423 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:17:40,423 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:17:40,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-17 11:17:40,423 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-17 11:17:40,423 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:17:40,423 INFO L85 PathProgramCache]: Analyzing trace with hash -204633070, now seen corresponding path program 4 times [2023-11-17 11:17:40,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:17:40,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652393775] [2023-11-17 11:17:40,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:17:40,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:17:40,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:17:40,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:17:40,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:17:40,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652393775] [2023-11-17 11:17:40,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652393775] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:17:40,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:17:40,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 11:17:40,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333635870] [2023-11-17 11:17:40,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:17:40,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 11:17:40,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:17:40,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 11:17:40,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-17 11:17:40,461 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 103 [2023-11-17 11:17:40,462 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 61 transitions, 348 flow. Second operand has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 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) [2023-11-17 11:17:40,462 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:17:40,462 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 103 [2023-11-17 11:17:40,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:17:40,635 INFO L124 PetriNetUnfolderBase]: 614/1018 cut-off events. [2023-11-17 11:17:40,636 INFO L125 PetriNetUnfolderBase]: For 1502/1552 co-relation queries the response was YES. [2023-11-17 11:17:40,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3245 conditions, 1018 events. 614/1018 cut-off events. For 1502/1552 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 4457 event pairs, 180 based on Foata normal form. 44/1002 useless extension candidates. Maximal degree in co-relation 2650. Up to 521 conditions per place. [2023-11-17 11:17:40,640 INFO L140 encePairwiseOnDemand]: 88/103 looper letters, 0 selfloop transitions, 0 changer transitions 92/92 dead transitions. [2023-11-17 11:17:40,641 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 92 transitions, 638 flow [2023-11-17 11:17:40,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 11:17:40,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 11:17:40,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 222 transitions. [2023-11-17 11:17:40,642 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43106796116504853 [2023-11-17 11:17:40,642 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 222 transitions. [2023-11-17 11:17:40,642 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 222 transitions. [2023-11-17 11:17:40,642 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:17:40,642 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 222 transitions. [2023-11-17 11:17:40,643 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 44.4) internal successors, (222), 5 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) [2023-11-17 11:17:40,645 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 103.0) internal successors, (618), 6 states have internal predecessors, (618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:17:40,645 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 103.0) internal successors, (618), 6 states have internal predecessors, (618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:17:40,645 INFO L175 Difference]: Start difference. First operand has 59 places, 61 transitions, 348 flow. Second operand 5 states and 222 transitions. [2023-11-17 11:17:40,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 92 transitions, 638 flow [2023-11-17 11:17:40,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 92 transitions, 615 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-17 11:17:40,654 INFO L231 Difference]: Finished difference. Result has 54 places, 0 transitions, 0 flow [2023-11-17 11:17:40,654 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=103, PETRI_DIFFERENCE_MINUEND_FLOW=311, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=54, PETRI_TRANSITIONS=0} [2023-11-17 11:17:40,655 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 13 predicate places. [2023-11-17 11:17:40,655 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 0 transitions, 0 flow [2023-11-17 11:17:40,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 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) [2023-11-17 11:17:40,657 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2023-11-17 11:17:40,658 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2023-11-17 11:17:40,658 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 6 remaining) [2023-11-17 11:17:40,658 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2023-11-17 11:17:40,659 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2023-11-17 11:17:40,659 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2023-11-17 11:17:40,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-17 11:17:40,659 INFO L445 BasicCegarLoop]: Path program histogram: [4, 1, 1] [2023-11-17 11:17:40,664 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-17 11:17:40,664 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-17 11:17:40,670 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.11 11:17:40 BasicIcfg [2023-11-17 11:17:40,670 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-17 11:17:40,675 INFO L158 Benchmark]: Toolchain (without parser) took 3889.95ms. Allocated memory was 187.7MB in the beginning and 228.6MB in the end (delta: 40.9MB). Free memory was 138.8MB in the beginning and 189.9MB in the end (delta: -51.1MB). Peak memory consumption was 118.6MB. Max. memory is 8.0GB. [2023-11-17 11:17:40,675 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 187.7MB. Free memory is still 144.4MB. There was no memory consumed. Max. memory is 8.0GB. [2023-11-17 11:17:40,675 INFO L158 Benchmark]: CACSL2BoogieTranslator took 491.44ms. Allocated memory is still 187.7MB. Free memory was 138.8MB in the beginning and 117.9MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. [2023-11-17 11:17:40,675 INFO L158 Benchmark]: Boogie Procedure Inliner took 58.17ms. Allocated memory is still 187.7MB. Free memory was 117.9MB in the beginning and 116.2MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-11-17 11:17:40,676 INFO L158 Benchmark]: Boogie Preprocessor took 37.69ms. Allocated memory is still 187.7MB. Free memory was 116.2MB in the beginning and 114.5MB in the end (delta: 1.7MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-11-17 11:17:40,678 INFO L158 Benchmark]: RCFGBuilder took 449.66ms. Allocated memory is still 187.7MB. Free memory was 114.5MB in the beginning and 93.5MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. [2023-11-17 11:17:40,678 INFO L158 Benchmark]: TraceAbstraction took 2835.69ms. Allocated memory was 187.7MB in the beginning and 228.6MB in the end (delta: 40.9MB). Free memory was 92.7MB in the beginning and 189.9MB in the end (delta: -97.2MB). Peak memory consumption was 72.4MB. Max. memory is 8.0GB. [2023-11-17 11:17:40,681 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 187.7MB. Free memory is still 144.4MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 491.44ms. Allocated memory is still 187.7MB. Free memory was 138.8MB in the beginning and 117.9MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 58.17ms. Allocated memory is still 187.7MB. Free memory was 117.9MB in the beginning and 116.2MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 37.69ms. Allocated memory is still 187.7MB. Free memory was 116.2MB in the beginning and 114.5MB in the end (delta: 1.7MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 449.66ms. Allocated memory is still 187.7MB. Free memory was 114.5MB in the beginning and 93.5MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. * TraceAbstraction took 2835.69ms. Allocated memory was 187.7MB in the beginning and 228.6MB in the end (delta: 40.9MB). Free memory was 92.7MB in the beginning and 189.9MB in the end (delta: -97.2MB). Peak memory consumption was 72.4MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.7s, 62 PlacesBefore, 41 PlacesAfterwards, 67 TransitionsBefore, 45 TransitionsAfterwards, 2160 CoEnabledTransitionPairs, 3 FixpointIterations, 0 TrivialSequentialCompositions, 27 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 1 ChoiceCompositions, 32 TotalNumberOfCompositions, 4285 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1758, independent: 1631, independent conditional: 0, independent unconditional: 1631, dependent: 127, dependent conditional: 0, dependent unconditional: 127, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1165, independent: 1123, independent conditional: 0, independent unconditional: 1123, dependent: 42, dependent conditional: 0, dependent unconditional: 42, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1165, independent: 1119, independent conditional: 0, independent unconditional: 1119, dependent: 46, dependent conditional: 0, dependent unconditional: 46, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 46, independent: 4, independent conditional: 0, independent unconditional: 4, dependent: 42, dependent conditional: 0, dependent unconditional: 42, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 50, independent: 5, independent conditional: 0, independent unconditional: 5, dependent: 46, dependent conditional: 0, dependent unconditional: 46, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1758, independent: 508, independent conditional: 0, independent unconditional: 508, dependent: 85, dependent conditional: 0, dependent unconditional: 85, unknown: 1165, unknown conditional: 0, unknown unconditional: 1165] , Statistics on independence cache: Total cache size (in pairs): 193, Positive cache size: 159, Positive conditional cache size: 0, Positive unconditional cache size: 159, Negative cache size: 34, Negative conditional cache size: 0, Negative unconditional cache size: 34, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 802]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 745]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 112 locations, 6 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: 2.7s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.8s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 161 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 161 mSDsluCounter, 25 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1 mSDsCounter, 55 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 668 IncrementalHoareTripleChecker+Invalid, 723 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 55 mSolverCounterUnsat, 24 mSDtfsCounter, 668 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=351occurred in iteration=4, InterpolantAutomatonStates: 24, 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, 0.3s InterpolantComputationTime, 98 NumberOfCodeBlocks, 98 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 92 ConstructedInterpolants, 0 QuantifiedInterpolants, 140 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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 - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-17 11:17:40,700 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...