/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_IcfgBuilder.xml -s ../benchexec/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.automaton.type.used.in.concurrency.analysis FINITE_AUTOMATA --preprocessor.replace.while.statements.and.if-then-else.statements false -i ../../../trunk/examples/svcomp/weaver/parallel-bakery-4.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.cfg-lbe-improvements-94356ea-m [2025-04-13 22:29:43,014 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-13 22:29:43,057 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 22:29:43,060 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-13 22:29:43,060 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-13 22:29:43,079 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-13 22:29:43,080 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-13 22:29:43,080 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-13 22:29:43,080 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-04-13 22:29:43,080 INFO L153 SettingsManager]: * Use memory slicer=true [2025-04-13 22:29:43,081 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-04-13 22:29:43,081 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-04-13 22:29:43,081 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-13 22:29:43,081 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-13 22:29:43,082 INFO L153 SettingsManager]: * Use SBE=true [2025-04-13 22:29:43,082 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-13 22:29:43,082 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-04-13 22:29:43,082 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-13 22:29:43,082 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-13 22:29:43,082 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-13 22:29:43,082 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-13 22:29:43,082 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-04-13 22:29:43,082 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-04-13 22:29:43,082 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-04-13 22:29:43,082 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-13 22:29:43,082 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-13 22:29:43,083 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-04-13 22:29:43,083 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-13 22:29:43,083 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-04-13 22:29:43,083 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-13 22:29:43,083 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-13 22:29:43,083 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-13 22:29:43,083 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 22:29:43,083 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-13 22:29:43,083 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-13 22:29:43,083 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-13 22:29:43,083 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-13 22:29:43,083 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 22:29:43,083 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-13 22:29:43,083 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-04-13 22:29:43,084 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-04-13 22:29:43,084 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-04-13 22:29:43,084 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-13 22:29:43,084 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-13 22:29:43,084 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-04-13 22:29:43,084 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-04-13 22:29:43,084 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-13 22:29:43,084 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 -> FINITE_AUTOMATA Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.preprocessor: Replace while statements and if-then-else statements -> false [2025-04-13 22:29:43,304 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-13 22:29:43,310 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-13 22:29:43,313 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-13 22:29:43,314 INFO L270 PluginConnector]: Initializing CDTParser... [2025-04-13 22:29:43,316 INFO L274 PluginConnector]: CDTParser initialized [2025-04-13 22:29:43,316 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-bakery-4.wvr.c [2025-04-13 22:29:44,608 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f506fb3f4/5253d441c2644bde9c44bfd6540ab5cb/FLAGa2f998c14 [2025-04-13 22:29:44,829 INFO L389 CDTParser]: Found 1 translation units. [2025-04-13 22:29:44,830 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-bakery-4.wvr.c [2025-04-13 22:29:44,838 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f506fb3f4/5253d441c2644bde9c44bfd6540ab5cb/FLAGa2f998c14 [2025-04-13 22:29:45,658 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f506fb3f4/5253d441c2644bde9c44bfd6540ab5cb [2025-04-13 22:29:45,662 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-13 22:29:45,663 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2025-04-13 22:29:45,664 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-04-13 22:29:45,664 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-04-13 22:29:45,668 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-04-13 22:29:45,669 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.04 10:29:45" (1/1) ... [2025-04-13 22:29:45,669 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76b601a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 10:29:45, skipping insertion in model container [2025-04-13 22:29:45,669 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.04 10:29:45" (1/1) ... [2025-04-13 22:29:45,692 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-04-13 22:29:45,889 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/parallel-bakery-4.wvr.c[5088,5101] [2025-04-13 22:29:45,896 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-13 22:29:45,910 INFO L200 MainTranslator]: Completed pre-run [2025-04-13 22:29:45,952 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/parallel-bakery-4.wvr.c[5088,5101] [2025-04-13 22:29:45,953 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-13 22:29:45,971 INFO L204 MainTranslator]: Completed translation [2025-04-13 22:29:45,971 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 10:29:45 WrapperNode [2025-04-13 22:29:45,971 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-04-13 22:29:45,972 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-13 22:29:45,972 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-13 22:29:45,972 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-13 22:29:45,978 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 10:29:45" (1/1) ... [2025-04-13 22:29:45,992 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 10:29:45" (1/1) ... [2025-04-13 22:29:46,018 INFO L138 Inliner]: procedures = 20, calls = 36, calls flagged for inlining = 28, calls inlined = 28, statements flattened = 365 [2025-04-13 22:29:46,022 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-13 22:29:46,023 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-13 22:29:46,023 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-13 22:29:46,023 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-13 22:29:46,033 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 10:29:45" (1/1) ... [2025-04-13 22:29:46,034 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 10:29:45" (1/1) ... [2025-04-13 22:29:46,041 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 10:29:45" (1/1) ... [2025-04-13 22:29:46,055 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-04-13 22:29:46,055 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 10:29:45" (1/1) ... [2025-04-13 22:29:46,055 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 10:29:45" (1/1) ... [2025-04-13 22:29:46,060 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 10:29:45" (1/1) ... [2025-04-13 22:29:46,061 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 10:29:45" (1/1) ... [2025-04-13 22:29:46,061 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 10:29:45" (1/1) ... [2025-04-13 22:29:46,062 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 10:29:45" (1/1) ... [2025-04-13 22:29:46,065 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-13 22:29:46,069 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-04-13 22:29:46,069 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-04-13 22:29:46,069 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-04-13 22:29:46,069 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 10:29:45" (1/1) ... [2025-04-13 22:29:46,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 22:29:46,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 22:29:46,102 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 22:29:46,104 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 22:29:46,119 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-04-13 22:29:46,119 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-04-13 22:29:46,119 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-04-13 22:29:46,119 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-04-13 22:29:46,119 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-04-13 22:29:46,119 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-04-13 22:29:46,119 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-04-13 22:29:46,119 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2025-04-13 22:29:46,119 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2025-04-13 22:29:46,119 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-04-13 22:29:46,119 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-13 22:29:46,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-13 22:29:46,120 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-04-13 22:29:46,198 INFO L256 CfgBuilder]: Building ICFG [2025-04-13 22:29:46,199 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-13 22:29:46,571 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-13 22:29:46,572 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-13 22:29:46,572 INFO L318 CfgBuilder]: Performing block encoding [2025-04-13 22:29:46,855 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-13 22:29:46,855 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 13.04 10:29:46 BoogieIcfgContainer [2025-04-13 22:29:46,855 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-04-13 22:29:46,859 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-04-13 22:29:46,859 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-04-13 22:29:46,863 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-04-13 22:29:46,863 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.04 10:29:45" (1/3) ... [2025-04-13 22:29:46,864 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4df75344 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.04 10:29:46, skipping insertion in model container [2025-04-13 22:29:46,865 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 10:29:45" (2/3) ... [2025-04-13 22:29:46,865 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4df75344 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.04 10:29:46, skipping insertion in model container [2025-04-13 22:29:46,865 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 13.04 10:29:46" (3/3) ... [2025-04-13 22:29:46,866 INFO L128 eAbstractionObserver]: Analyzing ICFG parallel-bakery-4.wvr.c [2025-04-13 22:29:46,876 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-04-13 22:29:46,878 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG parallel-bakery-4.wvr.c that has 5 procedures, 110 locations, 117 edges, 1 initial locations, 0 loop locations, and 1 error locations. [2025-04-13 22:29:46,878 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-04-13 22:29:46,939 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2025-04-13 22:29:46,967 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 122 places, 121 transitions, 270 flow [2025-04-13 22:29:51,784 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 182729 states, 182728 states have (on average 4.911113786611795) internal successors, (897398), 182728 states have internal predecessors, (897398), 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 22:29:51,802 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-13 22:29:51,815 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=FINITE_AUTOMATA, 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;@3dd2c96a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-13 22:29:51,815 INFO L341 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2025-04-13 22:29:52,103 INFO L278 IsEmpty]: Start isEmpty. Operand has 182729 states, 182728 states have (on average 4.911113786611795) internal successors, (897398), 182728 states have internal predecessors, (897398), 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 22:29:53,396 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2025-04-13 22:29:53,396 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 22:29:53,397 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 22:29:53,397 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-04-13 22:29:53,401 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 22:29:53,401 INFO L85 PathProgramCache]: Analyzing trace with hash 1289727527, now seen corresponding path program 1 times [2025-04-13 22:29:53,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 22:29:53,410 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198482104] [2025-04-13 22:29:53,415 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 22:29:53,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 22:29:53,482 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 92 statements into 1 equivalence classes. [2025-04-13 22:29:53,564 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 92 of 92 statements. [2025-04-13 22:29:53,564 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 22:29:53,564 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 22:29:54,039 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 22:29:54,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 22:29:54,039 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198482104] [2025-04-13 22:29:54,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198482104] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 22:29:54,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 22:29:54,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-13 22:29:54,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115443019] [2025-04-13 22:29:54,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 22:29:54,045 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-13 22:29:54,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 22:29:54,058 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-13 22:29:54,059 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-13 22:29:54,448 INFO L87 Difference]: Start difference. First operand has 182729 states, 182728 states have (on average 4.911113786611795) internal successors, (897398), 182728 states have internal predecessors, (897398), 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) Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 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 22:29:58,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 22:29:58,311 INFO L93 Difference]: Finished difference Result 287422 states and 1391464 transitions. [2025-04-13 22:29:58,312 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-13 22:29:58,313 INFO L79 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 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) Word has length 92 [2025-04-13 22:29:58,313 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 22:30:00,263 INFO L225 Difference]: With dead ends: 287422 [2025-04-13 22:30:00,263 INFO L226 Difference]: Without dead ends: 182729 [2025-04-13 22:30:00,482 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-13 22:30:00,484 INFO L437 NwaCegarLoop]: 7 mSDtfsCounter, 63 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 270 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-04-13 22:30:00,484 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 10 Invalid, 272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 270 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-04-13 22:30:01,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182729 states. [2025-04-13 22:30:06,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182729 to 182729. [2025-04-13 22:30:07,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182729 states, 182728 states have (on average 4.820585788713279) internal successors, (880856), 182728 states have internal predecessors, (880856), 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 22:30:08,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182729 states to 182729 states and 880856 transitions. [2025-04-13 22:30:09,132 INFO L79 Accepts]: Start accepts. Automaton has 182729 states and 880856 transitions. Word has length 92 [2025-04-13 22:30:09,133 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 22:30:09,133 INFO L485 AbstractCegarLoop]: Abstraction has 182729 states and 880856 transitions. [2025-04-13 22:30:09,133 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 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 22:30:09,133 INFO L278 IsEmpty]: Start isEmpty. Operand 182729 states and 880856 transitions. [2025-04-13 22:30:09,940 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2025-04-13 22:30:09,941 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 22:30:09,941 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 22:30:09,941 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-04-13 22:30:09,941 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-04-13 22:30:09,942 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 22:30:09,942 INFO L85 PathProgramCache]: Analyzing trace with hash -903945561, now seen corresponding path program 2 times [2025-04-13 22:30:09,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 22:30:09,942 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556210647] [2025-04-13 22:30:09,942 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 22:30:09,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 22:30:09,960 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 92 statements into 1 equivalence classes. [2025-04-13 22:30:09,988 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 92 of 92 statements. [2025-04-13 22:30:09,988 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-04-13 22:30:09,988 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 22:30:10,126 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 22:30:10,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 22:30:10,126 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556210647] [2025-04-13 22:30:10,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556210647] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 22:30:10,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 22:30:10,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-13 22:30:10,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394266794] [2025-04-13 22:30:10,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 22:30:10,128 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-13 22:30:10,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 22:30:10,128 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-13 22:30:10,128 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-13 22:30:10,128 INFO L87 Difference]: Start difference. First operand 182729 states and 880856 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 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 22:30:13,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 22:30:13,975 INFO L93 Difference]: Finished difference Result 287238 states and 1368688 transitions. [2025-04-13 22:30:13,976 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-13 22:30:13,976 INFO L79 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 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) Word has length 92 [2025-04-13 22:30:13,980 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 22:30:16,635 INFO L225 Difference]: With dead ends: 287238 [2025-04-13 22:30:16,635 INFO L226 Difference]: Without dead ends: 182729 [2025-04-13 22:30:16,883 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-13 22:30:16,885 INFO L437 NwaCegarLoop]: 7 mSDtfsCounter, 64 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-04-13 22:30:16,885 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 10 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-04-13 22:30:17,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182729 states. [2025-04-13 22:30:23,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182729 to 182729. [2025-04-13 22:30:23,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182729 states, 182728 states have (on average 4.761580053412723) internal successors, (870074), 182728 states have internal predecessors, (870074), 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 22:30:25,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182729 states to 182729 states and 870074 transitions. [2025-04-13 22:30:25,543 INFO L79 Accepts]: Start accepts. Automaton has 182729 states and 870074 transitions. Word has length 92 [2025-04-13 22:30:25,544 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 22:30:25,544 INFO L485 AbstractCegarLoop]: Abstraction has 182729 states and 870074 transitions. [2025-04-13 22:30:25,544 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 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 22:30:25,544 INFO L278 IsEmpty]: Start isEmpty. Operand 182729 states and 870074 transitions. [2025-04-13 22:30:26,430 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2025-04-13 22:30:26,431 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 22:30:26,431 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 22:30:26,431 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-04-13 22:30:26,431 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-04-13 22:30:26,433 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 22:30:26,433 INFO L85 PathProgramCache]: Analyzing trace with hash -577871751, now seen corresponding path program 3 times [2025-04-13 22:30:26,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 22:30:26,433 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991163743] [2025-04-13 22:30:26,433 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 22:30:26,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 22:30:26,454 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 92 statements into 1 equivalence classes. [2025-04-13 22:30:26,479 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 92 of 92 statements. [2025-04-13 22:30:26,479 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-04-13 22:30:26,479 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 22:30:26,653 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 22:30:26,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 22:30:26,653 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991163743] [2025-04-13 22:30:26,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991163743] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 22:30:26,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 22:30:26,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-04-13 22:30:26,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081730465] [2025-04-13 22:30:26,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 22:30:26,654 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-04-13 22:30:26,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 22:30:26,654 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-04-13 22:30:26,654 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-04-13 22:30:26,654 INFO L87 Difference]: Start difference. First operand 182729 states and 870074 transitions. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 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 22:30:31,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 22:30:31,628 INFO L93 Difference]: Finished difference Result 432624 states and 2043133 transitions. [2025-04-13 22:30:31,628 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-04-13 22:30:31,628 INFO L79 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 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) Word has length 92 [2025-04-13 22:30:31,628 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 22:30:34,524 INFO L225 Difference]: With dead ends: 432624 [2025-04-13 22:30:34,524 INFO L226 Difference]: Without dead ends: 302123 [2025-04-13 22:30:34,780 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-04-13 22:30:34,780 INFO L437 NwaCegarLoop]: 8 mSDtfsCounter, 138 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 375 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-04-13 22:30:34,781 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 16 Invalid, 382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 375 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-04-13 22:30:35,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302123 states.