/root/.sdkman/candidates/java/21.0.5-tem/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata ./data -tc ../benchexec/../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../benchexec/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.automaton.type.used.in.concurrency.analysis PETRI_NET -i ../../../trunk/examples/svcomp/weaver/unroll-cond-5.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.cfg-lbe-improvements-94356ea-m [2025-04-13 21:04:31,103 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-13 21:04:31,141 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../benchexec/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2025-04-13 21:04:31,144 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-13 21:04:31,145 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-13 21:04:31,161 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-13 21:04:31,162 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-13 21:04:31,162 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-13 21:04:31,162 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-04-13 21:04:31,162 INFO L153 SettingsManager]: * Use memory slicer=true [2025-04-13 21:04:31,163 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-04-13 21:04:31,163 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-04-13 21:04:31,163 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-13 21:04:31,163 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-13 21:04:31,163 INFO L153 SettingsManager]: * Use SBE=true [2025-04-13 21:04:31,164 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-13 21:04:31,164 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-04-13 21:04:31,164 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-13 21:04:31,164 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-13 21:04:31,164 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-13 21:04:31,164 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-13 21:04:31,164 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-04-13 21:04:31,164 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-04-13 21:04:31,164 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-04-13 21:04:31,164 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-13 21:04:31,164 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-13 21:04:31,164 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-04-13 21:04:31,164 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-13 21:04:31,164 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-04-13 21:04:31,164 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-13 21:04:31,165 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-13 21:04:31,165 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-13 21:04:31,165 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 21:04:31,165 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-13 21:04:31,165 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-13 21:04:31,165 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-13 21:04:31,165 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-13 21:04:31,165 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 21:04:31,165 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-13 21:04:31,165 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-04-13 21:04:31,165 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-04-13 21:04:31,165 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-04-13 21:04:31,165 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-13 21:04:31,165 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-13 21:04:31,166 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-04-13 21:04:31,166 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-04-13 21:04:31,166 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-13 21:04:31,166 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Automaton type used in concurrency analysis -> PETRI_NET [2025-04-13 21:04:31,392 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-13 21:04:31,399 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-13 21:04:31,400 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-13 21:04:31,401 INFO L270 PluginConnector]: Initializing CDTParser... [2025-04-13 21:04:31,401 INFO L274 PluginConnector]: CDTParser initialized [2025-04-13 21:04:31,402 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/unroll-cond-5.wvr.c [2025-04-13 21:04:32,675 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fbd383b74/0ca1990446cf4f359ca7bda9dccb1436/FLAG8ab76e2e4 [2025-04-13 21:04:32,882 INFO L389 CDTParser]: Found 1 translation units. [2025-04-13 21:04:32,882 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/unroll-cond-5.wvr.c [2025-04-13 21:04:32,889 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fbd383b74/0ca1990446cf4f359ca7bda9dccb1436/FLAG8ab76e2e4 [2025-04-13 21:04:33,826 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fbd383b74/0ca1990446cf4f359ca7bda9dccb1436 [2025-04-13 21:04:33,827 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-13 21:04:33,828 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2025-04-13 21:04:33,829 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-04-13 21:04:33,829 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-04-13 21:04:33,832 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-04-13 21:04:33,833 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.04 09:04:33" (1/1) ... [2025-04-13 21:04:33,833 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@bf4bb81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:04:33, skipping insertion in model container [2025-04-13 21:04:33,833 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.04 09:04:33" (1/1) ... [2025-04-13 21:04:33,847 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-04-13 21:04:33,981 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/unroll-cond-5.wvr.c[3001,3014] [2025-04-13 21:04:33,991 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-13 21:04:34,004 INFO L200 MainTranslator]: Completed pre-run [2025-04-13 21:04:34,027 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/unroll-cond-5.wvr.c[3001,3014] [2025-04-13 21:04:34,029 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-13 21:04:34,039 INFO L204 MainTranslator]: Completed translation [2025-04-13 21:04:34,039 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:04:34 WrapperNode [2025-04-13 21:04:34,040 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-04-13 21:04:34,041 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-13 21:04:34,041 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-13 21:04:34,041 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-13 21:04:34,046 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:04:34" (1/1) ... [2025-04-13 21:04:34,052 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:04:34" (1/1) ... [2025-04-13 21:04:34,071 INFO L138 Inliner]: procedures = 23, calls = 35, calls flagged for inlining = 17, calls inlined = 17, statements flattened = 188 [2025-04-13 21:04:34,072 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-13 21:04:34,072 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-13 21:04:34,072 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-13 21:04:34,072 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-13 21:04:34,080 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:04:34" (1/1) ... [2025-04-13 21:04:34,080 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:04:34" (1/1) ... [2025-04-13 21:04:34,082 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:04:34" (1/1) ... [2025-04-13 21:04:34,105 INFO L175 MemorySlicer]: Split 13 memory accesses to 2 slices as follows [2, 11]. 85 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2025-04-13 21:04:34,105 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:04:34" (1/1) ... [2025-04-13 21:04:34,105 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:04:34" (1/1) ... [2025-04-13 21:04:34,110 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:04:34" (1/1) ... [2025-04-13 21:04:34,110 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:04:34" (1/1) ... [2025-04-13 21:04:34,120 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:04:34" (1/1) ... [2025-04-13 21:04:34,121 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:04:34" (1/1) ... [2025-04-13 21:04:34,121 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:04:34" (1/1) ... [2025-04-13 21:04:34,129 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-13 21:04:34,130 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-13 21:04:34,130 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-13 21:04:34,130 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-13 21:04:34,132 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:04:34" (1/1) ... [2025-04-13 21:04:34,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 21:04:34,144 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 21:04:34,153 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-04-13 21:04:34,156 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-04-13 21:04:34,172 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-04-13 21:04:34,172 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-04-13 21:04:34,173 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-04-13 21:04:34,173 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-04-13 21:04:34,173 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-04-13 21:04:34,173 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-04-13 21:04:34,173 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-04-13 21:04:34,173 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-04-13 21:04:34,173 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-04-13 21:04:34,173 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-04-13 21:04:34,173 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-13 21:04:34,173 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-13 21:04:34,173 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-04-13 21:04:34,173 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-04-13 21:04:34,174 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-04-13 21:04:34,252 INFO L234 CfgBuilder]: Building ICFG [2025-04-13 21:04:34,253 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-13 21:04:34,514 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-13 21:04:34,515 INFO L289 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-13 21:04:34,515 INFO L294 CfgBuilder]: Performing block encoding [2025-04-13 21:04:34,794 INFO L313 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-13 21:04:34,794 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.04 09:04:34 BoogieIcfgContainer [2025-04-13 21:04:34,794 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-13 21:04:34,796 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-04-13 21:04:34,796 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-04-13 21:04:34,798 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-04-13 21:04:34,799 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.04 09:04:33" (1/3) ... [2025-04-13 21:04:34,799 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@221cfecc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.04 09:04:34, skipping insertion in model container [2025-04-13 21:04:34,799 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:04:34" (2/3) ... [2025-04-13 21:04:34,799 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@221cfecc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.04 09:04:34, skipping insertion in model container [2025-04-13 21:04:34,799 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.04 09:04:34" (3/3) ... [2025-04-13 21:04:34,800 INFO L128 eAbstractionObserver]: Analyzing ICFG unroll-cond-5.wvr.c [2025-04-13 21:04:34,810 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-04-13 21:04:34,811 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG unroll-cond-5.wvr.c that has 3 procedures, 17 locations, 17 edges, 1 initial locations, 3 loop locations, and 1 error locations. [2025-04-13 21:04:34,811 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-04-13 21:04:34,856 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-04-13 21:04:34,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 23 places, 19 transitions, 52 flow [2025-04-13 21:04:34,899 INFO L116 PetriNetUnfolderBase]: 3/17 cut-off events. [2025-04-13 21:04:34,901 INFO L117 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-04-13 21:04:34,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26 conditions, 17 events. 3/17 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 12 event pairs, 0 based on Foata normal form. 0/13 useless extension candidates. Maximal degree in co-relation 11. Up to 2 conditions per place. [2025-04-13 21:04:34,903 INFO L82 GeneralOperation]: Start removeDead. Operand has 23 places, 19 transitions, 52 flow [2025-04-13 21:04:34,905 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 20 places, 16 transitions, 44 flow [2025-04-13 21:04:34,913 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-13 21:04:34,923 INFO L340 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, 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;@33d2c221, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-13 21:04:34,923 INFO L341 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2025-04-13 21:04:34,933 INFO L177 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-04-13 21:04:34,933 INFO L116 PetriNetUnfolderBase]: 3/15 cut-off events. [2025-04-13 21:04:34,933 INFO L117 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-04-13 21:04:34,933 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 21:04:34,935 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 21:04:34,936 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 21:04:34,939 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 21:04:34,939 INFO L85 PathProgramCache]: Analyzing trace with hash 1968775093, now seen corresponding path program 1 times [2025-04-13 21:04:34,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 21:04:34,945 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123050234] [2025-04-13 21:04:34,945 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 21:04:34,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 21:04:35,007 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-04-13 21:04:35,050 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-04-13 21:04:35,051 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 21:04:35,051 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:04:35,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 21:04:35,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 21:04:35,247 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123050234] [2025-04-13 21:04:35,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123050234] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 21:04:35,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 21:04:35,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-04-13 21:04:35,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830111865] [2025-04-13 21:04:35,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 21:04:35,253 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-13 21:04:35,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 21:04:35,268 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-13 21:04:35,268 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-13 21:04:35,269 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 19 [2025-04-13 21:04:35,270 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 16 transitions, 44 flow. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 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) [2025-04-13 21:04:35,270 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 21:04:35,270 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 19 [2025-04-13 21:04:35,271 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-13 21:04:35,335 INFO L116 PetriNetUnfolderBase]: 38/70 cut-off events. [2025-04-13 21:04:35,336 INFO L117 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2025-04-13 21:04:35,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 156 conditions, 70 events. 38/70 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 119 event pairs, 22 based on Foata normal form. 0/54 useless extension candidates. Maximal degree in co-relation 120. Up to 70 conditions per place. [2025-04-13 21:04:35,337 INFO L140 encePairwiseOnDemand]: 16/19 looper letters, 15 selfloop transitions, 2 changer transitions 0/17 dead transitions. [2025-04-13 21:04:35,337 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 17 transitions, 80 flow [2025-04-13 21:04:35,338 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-13 21:04:35,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-04-13 21:04:35,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 24 transitions. [2025-04-13 21:04:35,345 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.42105263157894735 [2025-04-13 21:04:35,346 INFO L175 Difference]: Start difference. First operand has 20 places, 16 transitions, 44 flow. Second operand 3 states and 24 transitions. [2025-04-13 21:04:35,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 17 transitions, 80 flow [2025-04-13 21:04:35,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 17 transitions, 72 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-04-13 21:04:35,352 INFO L231 Difference]: Finished difference. Result has 19 places, 17 transitions, 48 flow [2025-04-13 21:04:35,354 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=19, PETRI_DIFFERENCE_MINUEND_FLOW=36, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=48, PETRI_PLACES=19, PETRI_TRANSITIONS=17} [2025-04-13 21:04:35,356 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, -1 predicate places. [2025-04-13 21:04:35,356 INFO L485 AbstractCegarLoop]: Abstraction has has 19 places, 17 transitions, 48 flow [2025-04-13 21:04:35,356 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 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) [2025-04-13 21:04:35,356 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 21:04:35,356 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 21:04:35,356 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-04-13 21:04:35,357 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 21:04:35,357 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 21:04:35,357 INFO L85 PathProgramCache]: Analyzing trace with hash 911089069, now seen corresponding path program 1 times [2025-04-13 21:04:35,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 21:04:35,357 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596880602] [2025-04-13 21:04:35,357 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 21:04:35,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 21:04:35,370 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-04-13 21:04:35,434 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-04-13 21:04:35,434 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 21:04:35,434 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:04:35,640 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 21:04:35,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 21:04:35,640 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596880602] [2025-04-13 21:04:35,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596880602] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 21:04:35,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 21:04:35,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-04-13 21:04:35,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036519465] [2025-04-13 21:04:35,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 21:04:35,641 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-04-13 21:04:35,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 21:04:35,642 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-04-13 21:04:35,642 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-04-13 21:04:35,642 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 19 [2025-04-13 21:04:35,642 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 17 transitions, 48 flow. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 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) [2025-04-13 21:04:35,642 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 21:04:35,642 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 19 [2025-04-13 21:04:35,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-13 21:04:37,629 WARN L532 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2025-04-13 21:04:37,784 INFO L116 PetriNetUnfolderBase]: 65/121 cut-off events. [2025-04-13 21:04:37,784 INFO L117 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-04-13 21:04:37,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 257 conditions, 121 events. 65/121 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 319 event pairs, 22 based on Foata normal form. 0/92 useless extension candidates. Maximal degree in co-relation 246. Up to 71 conditions per place. [2025-04-13 21:04:37,785 INFO L140 encePairwiseOnDemand]: 13/19 looper letters, 32 selfloop transitions, 5 changer transitions 0/37 dead transitions. [2025-04-13 21:04:37,785 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 37 transitions, 167 flow [2025-04-13 21:04:37,786 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-13 21:04:37,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-04-13 21:04:37,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 47 transitions. [2025-04-13 21:04:37,787 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.49473684210526314 [2025-04-13 21:04:37,787 INFO L175 Difference]: Start difference. First operand has 19 places, 17 transitions, 48 flow. Second operand 5 states and 47 transitions. [2025-04-13 21:04:37,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 37 transitions, 167 flow [2025-04-13 21:04:37,788 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 37 transitions, 163 flow, removed 1 selfloop flow, removed 1 redundant places. [2025-04-13 21:04:37,788 INFO L231 Difference]: Finished difference. Result has 25 places, 21 transitions, 80 flow [2025-04-13 21:04:37,788 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=19, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=80, PETRI_PLACES=25, PETRI_TRANSITIONS=21} [2025-04-13 21:04:37,789 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 5 predicate places. [2025-04-13 21:04:37,789 INFO L485 AbstractCegarLoop]: Abstraction has has 25 places, 21 transitions, 80 flow [2025-04-13 21:04:37,790 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 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) [2025-04-13 21:04:37,790 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 21:04:37,790 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 21:04:37,790 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-04-13 21:04:37,790 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 21:04:37,791 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 21:04:37,791 INFO L85 PathProgramCache]: Analyzing trace with hash 353997625, now seen corresponding path program 2 times [2025-04-13 21:04:37,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 21:04:37,791 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807160322] [2025-04-13 21:04:37,791 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 21:04:37,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 21:04:37,809 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 14 statements into 2 equivalence classes. [2025-04-13 21:04:37,855 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 13 of 14 statements. [2025-04-13 21:04:37,855 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-04-13 21:04:37,855 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:04:38,240 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 21:04:38,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 21:04:38,240 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807160322] [2025-04-13 21:04:38,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807160322] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 21:04:38,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 21:04:38,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-04-13 21:04:38,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421351184] [2025-04-13 21:04:38,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 21:04:38,241 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-04-13 21:04:38,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 21:04:38,241 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-04-13 21:04:38,241 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-04-13 21:04:38,241 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 19 [2025-04-13 21:04:38,241 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 21 transitions, 80 flow. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 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) [2025-04-13 21:04:38,241 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 21:04:38,241 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 19 [2025-04-13 21:04:38,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-13 21:04:38,399 INFO L116 PetriNetUnfolderBase]: 100/186 cut-off events. [2025-04-13 21:04:38,399 INFO L117 PetriNetUnfolderBase]: For 108/108 co-relation queries the response was YES. [2025-04-13 21:04:38,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 545 conditions, 186 events. 100/186 cut-off events. For 108/108 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 571 event pairs, 39 based on Foata normal form. 2/151 useless extension candidates. Maximal degree in co-relation 527. Up to 120 conditions per place. [2025-04-13 21:04:38,401 INFO L140 encePairwiseOnDemand]: 13/19 looper letters, 34 selfloop transitions, 7 changer transitions 0/41 dead transitions. [2025-04-13 21:04:38,401 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 41 transitions, 240 flow [2025-04-13 21:04:38,402 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-13 21:04:38,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-04-13 21:04:38,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 43 transitions. [2025-04-13 21:04:38,403 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.45263157894736844 [2025-04-13 21:04:38,403 INFO L175 Difference]: Start difference. First operand has 25 places, 21 transitions, 80 flow. Second operand 5 states and 43 transitions. [2025-04-13 21:04:38,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 41 transitions, 240 flow [2025-04-13 21:04:38,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 41 transitions, 223 flow, removed 5 selfloop flow, removed 1 redundant places. [2025-04-13 21:04:38,405 INFO L231 Difference]: Finished difference. Result has 31 places, 25 transitions, 122 flow [2025-04-13 21:04:38,405 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=19, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=122, PETRI_PLACES=31, PETRI_TRANSITIONS=25} [2025-04-13 21:04:38,405 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 11 predicate places. [2025-04-13 21:04:38,405 INFO L485 AbstractCegarLoop]: Abstraction has has 31 places, 25 transitions, 122 flow [2025-04-13 21:04:38,405 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 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) [2025-04-13 21:04:38,406 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 21:04:38,406 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 21:04:38,406 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-04-13 21:04:38,406 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 21:04:38,406 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 21:04:38,406 INFO L85 PathProgramCache]: Analyzing trace with hash -1608789819, now seen corresponding path program 3 times [2025-04-13 21:04:38,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 21:04:38,408 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991038606] [2025-04-13 21:04:38,408 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 21:04:38,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 21:04:38,420 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 14 statements into 2 equivalence classes. [2025-04-13 21:04:38,444 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 13 of 14 statements. [2025-04-13 21:04:38,445 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-04-13 21:04:38,445 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:04:38,544 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 21:04:38,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 21:04:38,544 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991038606] [2025-04-13 21:04:38,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991038606] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 21:04:38,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 21:04:38,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-04-13 21:04:38,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845643299] [2025-04-13 21:04:38,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 21:04:38,544 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-04-13 21:04:38,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 21:04:38,545 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-04-13 21:04:38,545 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-04-13 21:04:38,545 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 19 [2025-04-13 21:04:38,545 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 25 transitions, 122 flow. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 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) [2025-04-13 21:04:38,545 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 21:04:38,555 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 19 [2025-04-13 21:04:38,555 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-13 21:04:39,604 INFO L116 PetriNetUnfolderBase]: 109/200 cut-off events. [2025-04-13 21:04:39,605 INFO L117 PetriNetUnfolderBase]: For 268/268 co-relation queries the response was YES. [2025-04-13 21:04:39,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 706 conditions, 200 events. 109/200 cut-off events. For 268/268 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 637 event pairs, 39 based on Foata normal form. 3/178 useless extension candidates. Maximal degree in co-relation 685. Up to 111 conditions per place. [2025-04-13 21:04:39,606 INFO L140 encePairwiseOnDemand]: 13/19 looper letters, 33 selfloop transitions, 12 changer transitions 0/45 dead transitions. [2025-04-13 21:04:39,606 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 45 transitions, 305 flow [2025-04-13 21:04:39,607 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-13 21:04:39,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-04-13 21:04:39,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 47 transitions. [2025-04-13 21:04:39,607 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.49473684210526314 [2025-04-13 21:04:39,607 INFO L175 Difference]: Start difference. First operand has 31 places, 25 transitions, 122 flow. Second operand 5 states and 47 transitions. [2025-04-13 21:04:39,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 45 transitions, 305 flow [2025-04-13 21:04:39,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 45 transitions, 281 flow, removed 8 selfloop flow, removed 1 redundant places. [2025-04-13 21:04:39,609 INFO L231 Difference]: Finished difference. Result has 37 places, 31 transitions, 201 flow [2025-04-13 21:04:39,609 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=19, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=201, PETRI_PLACES=37, PETRI_TRANSITIONS=31} [2025-04-13 21:04:39,610 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 17 predicate places. [2025-04-13 21:04:39,610 INFO L485 AbstractCegarLoop]: Abstraction has has 37 places, 31 transitions, 201 flow [2025-04-13 21:04:39,610 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 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) [2025-04-13 21:04:39,610 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 21:04:39,610 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 21:04:39,610 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-04-13 21:04:39,610 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 21:04:39,611 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 21:04:39,611 INFO L85 PathProgramCache]: Analyzing trace with hash 211894555, now seen corresponding path program 4 times [2025-04-13 21:04:39,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 21:04:39,611 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933426024] [2025-04-13 21:04:39,611 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 21:04:39,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 21:04:39,618 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 14 statements into 2 equivalence classes. [2025-04-13 21:04:39,631 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 14 of 14 statements. [2025-04-13 21:04:39,631 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 21:04:39,632 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:04:39,751 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 21:04:39,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 21:04:39,752 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933426024] [2025-04-13 21:04:39,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933426024] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 21:04:39,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 21:04:39,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-04-13 21:04:39,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018558536] [2025-04-13 21:04:39,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 21:04:39,752 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-04-13 21:04:39,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 21:04:39,753 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-04-13 21:04:39,753 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-04-13 21:04:39,753 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 19 [2025-04-13 21:04:39,753 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 31 transitions, 201 flow. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 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) [2025-04-13 21:04:39,753 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 21:04:39,753 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 19 [2025-04-13 21:04:39,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-13 21:04:39,896 INFO L116 PetriNetUnfolderBase]: 106/197 cut-off events. [2025-04-13 21:04:39,896 INFO L117 PetriNetUnfolderBase]: For 486/486 co-relation queries the response was YES. [2025-04-13 21:04:39,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 772 conditions, 197 events. 106/197 cut-off events. For 486/486 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 610 event pairs, 46 based on Foata normal form. 3/175 useless extension candidates. Maximal degree in co-relation 748. Up to 160 conditions per place. [2025-04-13 21:04:39,898 INFO L140 encePairwiseOnDemand]: 13/19 looper letters, 29 selfloop transitions, 15 changer transitions 0/44 dead transitions. [2025-04-13 21:04:39,898 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 44 transitions, 363 flow [2025-04-13 21:04:39,898 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-13 21:04:39,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-04-13 21:04:39,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 42 transitions. [2025-04-13 21:04:39,898 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.4421052631578947 [2025-04-13 21:04:39,899 INFO L175 Difference]: Start difference. First operand has 37 places, 31 transitions, 201 flow. Second operand 5 states and 42 transitions. [2025-04-13 21:04:39,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 44 transitions, 363 flow [2025-04-13 21:04:39,901 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 44 transitions, 350 flow, removed 3 selfloop flow, removed 1 redundant places. [2025-04-13 21:04:39,902 INFO L231 Difference]: Finished difference. Result has 42 places, 37 transitions, 294 flow [2025-04-13 21:04:39,903 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=19, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=294, PETRI_PLACES=42, PETRI_TRANSITIONS=37} [2025-04-13 21:04:39,903 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 22 predicate places. [2025-04-13 21:04:39,903 INFO L485 AbstractCegarLoop]: Abstraction has has 42 places, 37 transitions, 294 flow [2025-04-13 21:04:39,903 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 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) [2025-04-13 21:04:39,903 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 21:04:39,903 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 21:04:39,903 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-04-13 21:04:39,904 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 21:04:39,904 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 21:04:39,904 INFO L85 PathProgramCache]: Analyzing trace with hash -2137963075, now seen corresponding path program 5 times [2025-04-13 21:04:39,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 21:04:39,904 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348628495] [2025-04-13 21:04:39,904 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 21:04:39,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 21:04:39,916 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 14 statements into 2 equivalence classes. [2025-04-13 21:04:39,946 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 14 of 14 statements. [2025-04-13 21:04:39,947 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 21:04:39,947 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:04:40,141 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 21:04:40,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 21:04:40,141 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348628495] [2025-04-13 21:04:40,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348628495] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 21:04:40,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 21:04:40,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-04-13 21:04:40,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225199932] [2025-04-13 21:04:40,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 21:04:40,142 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-04-13 21:04:40,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 21:04:40,142 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-04-13 21:04:40,142 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-04-13 21:04:40,142 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 19 [2025-04-13 21:04:40,143 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 37 transitions, 294 flow. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 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) [2025-04-13 21:04:40,143 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 21:04:40,143 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 19 [2025-04-13 21:04:40,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-13 21:04:44,190 WARN L532 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2025-04-13 21:04:44,294 INFO L116 PetriNetUnfolderBase]: 107/200 cut-off events. [2025-04-13 21:04:44,294 INFO L117 PetriNetUnfolderBase]: For 588/588 co-relation queries the response was YES. [2025-04-13 21:04:44,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 874 conditions, 200 events. 107/200 cut-off events. For 588/588 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 645 event pairs, 34 based on Foata normal form. 2/177 useless extension candidates. Maximal degree in co-relation 848. Up to 113 conditions per place. [2025-04-13 21:04:44,296 INFO L140 encePairwiseOnDemand]: 13/19 looper letters, 35 selfloop transitions, 14 changer transitions 0/49 dead transitions. [2025-04-13 21:04:44,296 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 49 transitions, 430 flow [2025-04-13 21:04:44,296 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-13 21:04:44,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-04-13 21:04:44,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 46 transitions. [2025-04-13 21:04:44,297 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.4842105263157895 [2025-04-13 21:04:44,297 INFO L175 Difference]: Start difference. First operand has 42 places, 37 transitions, 294 flow. Second operand 5 states and 46 transitions. [2025-04-13 21:04:44,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 49 transitions, 430 flow [2025-04-13 21:04:44,299 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 49 transitions, 376 flow, removed 15 selfloop flow, removed 2 redundant places. [2025-04-13 21:04:44,300 INFO L231 Difference]: Finished difference. Result has 45 places, 38 transitions, 280 flow [2025-04-13 21:04:44,300 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=19, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=280, PETRI_PLACES=45, PETRI_TRANSITIONS=38} [2025-04-13 21:04:44,301 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 25 predicate places. [2025-04-13 21:04:44,301 INFO L485 AbstractCegarLoop]: Abstraction has has 45 places, 38 transitions, 280 flow [2025-04-13 21:04:44,301 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 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) [2025-04-13 21:04:44,301 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 21:04:44,301 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 21:04:44,301 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-04-13 21:04:44,301 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 21:04:44,301 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 21:04:44,302 INFO L85 PathProgramCache]: Analyzing trace with hash 215469475, now seen corresponding path program 6 times [2025-04-13 21:04:44,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 21:04:44,302 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415084115] [2025-04-13 21:04:44,302 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 21:04:44,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 21:04:44,311 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 14 statements into 2 equivalence classes. [2025-04-13 21:04:44,341 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) and asserted 13 of 14 statements. [2025-04-13 21:04:44,341 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2025-04-13 21:04:44,341 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:04:44,454 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 21:04:44,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 21:04:44,455 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415084115] [2025-04-13 21:04:44,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415084115] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 21:04:44,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 21:04:44,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-04-13 21:04:44,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910985679] [2025-04-13 21:04:44,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 21:04:44,455 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-04-13 21:04:44,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 21:04:44,455 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-04-13 21:04:44,456 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-04-13 21:04:44,456 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 19 [2025-04-13 21:04:44,456 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 38 transitions, 280 flow. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 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) [2025-04-13 21:04:44,456 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 21:04:44,456 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 19 [2025-04-13 21:04:44,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-13 21:04:44,584 INFO L116 PetriNetUnfolderBase]: 106/194 cut-off events. [2025-04-13 21:04:44,585 INFO L117 PetriNetUnfolderBase]: For 597/597 co-relation queries the response was YES. [2025-04-13 21:04:44,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 822 conditions, 194 events. 106/194 cut-off events. For 597/597 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 608 event pairs, 45 based on Foata normal form. 2/171 useless extension candidates. Maximal degree in co-relation 795. Up to 154 conditions per place. [2025-04-13 21:04:44,586 INFO L140 encePairwiseOnDemand]: 13/19 looper letters, 31 selfloop transitions, 15 changer transitions 0/46 dead transitions. [2025-04-13 21:04:44,586 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 46 transitions, 402 flow [2025-04-13 21:04:44,587 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-13 21:04:44,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-04-13 21:04:44,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 42 transitions. [2025-04-13 21:04:44,589 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.4421052631578947 [2025-04-13 21:04:44,589 INFO L175 Difference]: Start difference. First operand has 45 places, 38 transitions, 280 flow. Second operand 5 states and 42 transitions. [2025-04-13 21:04:44,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 46 transitions, 402 flow [2025-04-13 21:04:44,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 46 transitions, 368 flow, removed 2 selfloop flow, removed 3 redundant places. [2025-04-13 21:04:44,592 INFO L231 Difference]: Finished difference. Result has 47 places, 39 transitions, 292 flow [2025-04-13 21:04:44,592 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=19, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=292, PETRI_PLACES=47, PETRI_TRANSITIONS=39} [2025-04-13 21:04:44,594 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 27 predicate places. [2025-04-13 21:04:44,594 INFO L485 AbstractCegarLoop]: Abstraction has has 47 places, 39 transitions, 292 flow [2025-04-13 21:04:44,594 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 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) [2025-04-13 21:04:44,594 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 21:04:44,594 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 21:04:44,595 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-04-13 21:04:44,595 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 21:04:44,595 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 21:04:44,595 INFO L85 PathProgramCache]: Analyzing trace with hash 1496339611, now seen corresponding path program 1 times [2025-04-13 21:04:44,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 21:04:44,595 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009243494] [2025-04-13 21:04:44,595 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 21:04:44,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 21:04:44,603 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-04-13 21:04:44,622 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-04-13 21:04:44,622 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 21:04:44,622 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:04:44,781 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 21:04:44,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 21:04:44,782 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009243494] [2025-04-13 21:04:44,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009243494] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 21:04:44,782 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1604655795] [2025-04-13 21:04:44,782 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 21:04:44,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 21:04:44,782 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 21:04:44,786 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) [2025-04-13 21:04:44,788 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-04-13 21:04:44,846 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-04-13 21:04:44,874 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-04-13 21:04:44,875 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 21:04:44,875 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:04:44,876 INFO L256 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 32 conjuncts are in the unsatisfiable core [2025-04-13 21:04:44,881 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 21:04:44,932 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-04-13 21:04:48,038 INFO L325 Elim1Store]: treesize reduction 297, result has 6.9 percent of original size [2025-04-13 21:04:48,038 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 14 new quantified variables, introduced 36 case distinctions, treesize of input 435 treesize of output 287 [2025-04-13 21:04:54,844 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 21:04:54,844 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 21:05:03,313 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 596 treesize of output 522 [2025-04-13 21:05:03,908 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 21:05:03,908 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 11 select indices, 11 select index equivalence classes, 0 disjoint index pairs (out of 55 index pairs), introduced 20 new quantified variables, introduced 55 case distinctions, treesize of input 7128 treesize of output 4556 [2025-04-13 21:07:24,573 WARN L656 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2025-04-13 21:07:26,869 WARN L656 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2025-04-13 21:07:29,245 WARN L656 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2025-04-13 21:07:30,206 WARN L656 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2025-04-13 21:07:36,496 WARN L656 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2025-04-13 21:07:37,666 WARN L656 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2025-04-13 21:07:43,430 WARN L656 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2025-04-13 21:07:46,010 WARN L656 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2025-04-13 21:08:19,434 WARN L249 Executor]: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) stderr output: (error "out of memory") [2025-04-13 21:08:19,435 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 101 [2025-04-13 21:08:19,435 WARN L310 FreeRefinementEngine]: Global settings require throwing the following exception [2025-04-13 21:08:19,443 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-04-13 21:08:19,639 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 21:08:19,640 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseSuccess(Executor.java:277) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.push(Scriptor.java:133) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.push(DiffWrapperScript.java:90) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.push(WrapperScript.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.push(HistoryRecordingScript.java:107) at de.uni_freiburg.informatik.ultimate.logic.Util.checkSat(Util.java:48) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.checkRedundancy(SimplifyDDA2.java:275) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convertForPreprocessedInputTerms(SimplifyDDA2.java:499) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convert(SimplifyDDA2.java:484) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convert(SimplifyDDA2.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:103) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:99) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.simplify(SimplifyDDA2.java:589) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:245) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplifyWithStatistics(SmtUtils.java:318) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify(QuantifierPusher.java:726) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:135) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:223) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:115) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:99) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:305) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.pushMinionEliminatees(QuantifierPushUtilsForSubsetPush.java:241) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.sequentialSubsetPush(QuantifierPushUtilsForSubsetPush.java:139) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:337) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:191) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:223) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:115) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:99) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:305) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:285) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.eliminate(PartialQuantifierElimination.java:56) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:234) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:416) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeBackwardSequence(IterativePredicateTransformer.java:395) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeWeakestPreconditionSequence(IterativePredicateTransformer.java:267) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:325) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:181) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:160) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:106) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:317) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:349) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:331) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:427) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:315) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:239) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:166) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:132) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1518) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:701) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:258) ... 69 more [2025-04-13 21:08:19,645 INFO L158 Benchmark]: Toolchain (without parser) took 225816.21ms. Allocated memory was 125.8MB in the beginning and 964.7MB in the end (delta: 838.9MB). Free memory was 86.3MB in the beginning and 723.9MB in the end (delta: -637.6MB). Peak memory consumption was 597.5MB. Max. memory is 8.0GB. [2025-04-13 21:08:19,645 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 155.2MB. Free memory is still 86.2MB. There was no memory consumed. Max. memory is 8.0GB. [2025-04-13 21:08:19,645 INFO L158 Benchmark]: CACSL2BoogieTranslator took 210.55ms. Allocated memory is still 125.8MB. Free memory was 86.3MB in the beginning and 70.5MB in the end (delta: 15.8MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. [2025-04-13 21:08:19,645 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.44ms. Allocated memory is still 125.8MB. Free memory was 70.5MB in the beginning and 68.1MB in the end (delta: 2.4MB). There was no memory consumed. Max. memory is 8.0GB. [2025-04-13 21:08:19,645 INFO L158 Benchmark]: Boogie Preprocessor took 57.14ms. Allocated memory is still 125.8MB. Free memory was 68.1MB in the beginning and 65.5MB in the end (delta: 2.6MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2025-04-13 21:08:19,645 INFO L158 Benchmark]: RCFGBuilder took 664.57ms. Allocated memory is still 125.8MB. Free memory was 65.5MB in the beginning and 55.9MB in the end (delta: 9.6MB). Peak memory consumption was 52.5MB. Max. memory is 8.0GB. [2025-04-13 21:08:19,646 INFO L158 Benchmark]: TraceAbstraction took 224848.54ms. Allocated memory was 125.8MB in the beginning and 964.7MB in the end (delta: 838.9MB). Free memory was 55.3MB in the beginning and 723.9MB in the end (delta: -668.6MB). Peak memory consumption was 565.9MB. Max. memory is 8.0GB. [2025-04-13 21:08:19,646 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 155.2MB. Free memory is still 86.2MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 210.55ms. Allocated memory is still 125.8MB. Free memory was 86.3MB in the beginning and 70.5MB in the end (delta: 15.8MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 30.44ms. Allocated memory is still 125.8MB. Free memory was 70.5MB in the beginning and 68.1MB in the end (delta: 2.4MB). There was no memory consumed. Max. memory is 8.0GB. * Boogie Preprocessor took 57.14ms. Allocated memory is still 125.8MB. Free memory was 68.1MB in the beginning and 65.5MB in the end (delta: 2.6MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * RCFGBuilder took 664.57ms. Allocated memory is still 125.8MB. Free memory was 65.5MB in the beginning and 55.9MB in the end (delta: 9.6MB). Peak memory consumption was 52.5MB. Max. memory is 8.0GB. * TraceAbstraction took 224848.54ms. Allocated memory was 125.8MB in the beginning and 964.7MB in the end (delta: 838.9MB). Free memory was 55.3MB in the beginning and 723.9MB in the end (delta: -668.6MB). Peak memory consumption was 565.9MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...