./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_segments.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e2fb8bed Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_segments.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 827228a8fb731d7038bb1b8c7cce3c35edda9a5c3ee552084966688fbdc104d2 --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-08 08:48:17,792 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-08 08:48:17,844 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2025-03-08 08:48:17,849 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-08 08:48:17,850 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-08 08:48:17,868 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-08 08:48:17,869 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-08 08:48:17,869 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-08 08:48:17,870 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-08 08:48:17,870 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-08 08:48:17,870 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-08 08:48:17,870 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-08 08:48:17,871 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-08 08:48:17,871 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-08 08:48:17,871 INFO L153 SettingsManager]: * Use SBE=true [2025-03-08 08:48:17,871 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-08 08:48:17,871 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-08 08:48:17,872 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-08 08:48:17,872 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-08 08:48:17,872 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-08 08:48:17,872 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-08 08:48:17,872 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-08 08:48:17,872 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-08 08:48:17,872 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-08 08:48:17,872 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-08 08:48:17,872 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-08 08:48:17,872 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-08 08:48:17,873 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-08 08:48:17,873 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-08 08:48:17,873 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 08:48:17,873 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-08 08:48:17,873 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-08 08:48:17,873 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-08 08:48:17,873 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-08 08:48:17,874 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-08 08:48:17,874 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-08 08:48:17,874 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-08 08:48:17,874 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-08 08:48:17,874 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-08 08:48:17,874 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-08 08:48:17,874 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 827228a8fb731d7038bb1b8c7cce3c35edda9a5c3ee552084966688fbdc104d2 [2025-03-08 08:48:18,111 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-08 08:48:18,120 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-08 08:48:18,122 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-08 08:48:18,123 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-08 08:48:18,123 INFO L274 PluginConnector]: CDTParser initialized [2025-03-08 08:48:18,125 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_segments.c [2025-03-08 08:48:19,270 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/40b5342c0/37499722c2bb43508ad1477dc82f2ef5/FLAG4526ac5cd [2025-03-08 08:48:19,507 INFO L384 CDTParser]: Found 1 translation units. [2025-03-08 08:48:19,507 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_segments.c [2025-03-08 08:48:19,513 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/40b5342c0/37499722c2bb43508ad1477dc82f2ef5/FLAG4526ac5cd [2025-03-08 08:48:19,840 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/40b5342c0/37499722c2bb43508ad1477dc82f2ef5 [2025-03-08 08:48:19,842 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-08 08:48:19,843 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-08 08:48:19,844 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-08 08:48:19,844 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-08 08:48:19,847 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-08 08:48:19,847 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 08:48:19" (1/1) ... [2025-03-08 08:48:19,848 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b02354c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 08:48:19, skipping insertion in model container [2025-03-08 08:48:19,848 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 08:48:19" (1/1) ... [2025-03-08 08:48:19,864 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-08 08:48:19,960 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_segments.c[1250,1263] [2025-03-08 08:48:20,006 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 08:48:20,014 INFO L200 MainTranslator]: Completed pre-run [2025-03-08 08:48:20,023 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_segments.c[1250,1263] [2025-03-08 08:48:20,049 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 08:48:20,059 INFO L204 MainTranslator]: Completed translation [2025-03-08 08:48:20,060 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 08:48:20 WrapperNode [2025-03-08 08:48:20,060 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-08 08:48:20,061 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-08 08:48:20,062 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-08 08:48:20,062 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-08 08:48:20,066 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 08:48:20" (1/1) ... [2025-03-08 08:48:20,076 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 08:48:20" (1/1) ... [2025-03-08 08:48:20,112 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 307 [2025-03-08 08:48:20,112 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-08 08:48:20,113 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-08 08:48:20,113 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-08 08:48:20,113 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-08 08:48:20,119 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 08:48:20" (1/1) ... [2025-03-08 08:48:20,119 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 08:48:20" (1/1) ... [2025-03-08 08:48:20,123 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 08:48:20" (1/1) ... [2025-03-08 08:48:20,141 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]. [2025-03-08 08:48:20,141 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 08:48:20" (1/1) ... [2025-03-08 08:48:20,141 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 08:48:20" (1/1) ... [2025-03-08 08:48:20,150 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 08:48:20" (1/1) ... [2025-03-08 08:48:20,152 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 08:48:20" (1/1) ... [2025-03-08 08:48:20,153 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 08:48:20" (1/1) ... [2025-03-08 08:48:20,155 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 08:48:20" (1/1) ... [2025-03-08 08:48:20,162 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-08 08:48:20,164 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-08 08:48:20,164 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-08 08:48:20,164 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-08 08:48:20,165 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 08:48:20" (1/1) ... [2025-03-08 08:48:20,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 08:48:20,181 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 08:48:20,193 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) [2025-03-08 08:48:20,198 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 [2025-03-08 08:48:20,213 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-08 08:48:20,213 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-08 08:48:20,213 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-08 08:48:20,213 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-08 08:48:20,288 INFO L256 CfgBuilder]: Building ICFG [2025-03-08 08:48:20,289 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-08 08:48:20,762 INFO L? ?]: Removed 175 outVars from TransFormulas that were not future-live. [2025-03-08 08:48:20,762 INFO L307 CfgBuilder]: Performing block encoding [2025-03-08 08:48:20,806 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-08 08:48:20,807 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-08 08:48:20,807 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 08:48:20 BoogieIcfgContainer [2025-03-08 08:48:20,808 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-08 08:48:20,809 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-08 08:48:20,809 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-08 08:48:20,812 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-08 08:48:20,813 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.03 08:48:19" (1/3) ... [2025-03-08 08:48:20,813 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54206bc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 08:48:20, skipping insertion in model container [2025-03-08 08:48:20,813 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 08:48:20" (2/3) ... [2025-03-08 08:48:20,814 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54206bc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 08:48:20, skipping insertion in model container [2025-03-08 08:48:20,814 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 08:48:20" (3/3) ... [2025-03-08 08:48:20,815 INFO L128 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.h_segments.c [2025-03-08 08:48:20,826 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-08 08:48:20,828 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG btor2c-lazyMod.h_segments.c that has 1 procedures, 82 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-08 08:48:20,873 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-08 08:48:20,884 INFO L333 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;@fc63796, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-08 08:48:20,884 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-08 08:48:20,888 INFO L276 IsEmpty]: Start isEmpty. Operand has 82 states, 80 states have (on average 1.4875) internal successors, (119), 81 states have internal predecessors, (119), 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) [2025-03-08 08:48:20,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2025-03-08 08:48:20,892 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 08:48:20,893 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] [2025-03-08 08:48:20,893 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 08:48:20,897 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 08:48:20,897 INFO L85 PathProgramCache]: Analyzing trace with hash -2051316781, now seen corresponding path program 1 times [2025-03-08 08:48:20,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 08:48:20,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163600124] [2025-03-08 08:48:20,903 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 08:48:20,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 08:48:20,964 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 31 statements into 1 equivalence classes. [2025-03-08 08:48:21,026 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-03-08 08:48:21,026 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 08:48:21,026 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 08:48:21,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 08:48:21,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 08:48:21,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163600124] [2025-03-08 08:48:21,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163600124] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 08:48:21,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 08:48:21,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 08:48:21,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399732971] [2025-03-08 08:48:21,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 08:48:21,402 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 08:48:21,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 08:48:21,415 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 08:48:21,415 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 08:48:21,418 INFO L87 Difference]: Start difference. First operand has 82 states, 80 states have (on average 1.4875) internal successors, (119), 81 states have internal predecessors, (119), 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 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 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) [2025-03-08 08:48:21,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 08:48:21,496 INFO L93 Difference]: Finished difference Result 157 states and 231 transitions. [2025-03-08 08:48:21,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 08:48:21,498 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 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 31 [2025-03-08 08:48:21,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 08:48:21,503 INFO L225 Difference]: With dead ends: 157 [2025-03-08 08:48:21,503 INFO L226 Difference]: Without dead ends: 81 [2025-03-08 08:48:21,505 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 08:48:21,507 INFO L435 NwaCegarLoop]: 95 mSDtfsCounter, 0 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 280 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 08:48:21,507 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 280 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 08:48:21,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2025-03-08 08:48:21,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2025-03-08 08:48:21,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 80 states have (on average 1.4625) internal successors, (117), 80 states have internal predecessors, (117), 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) [2025-03-08 08:48:21,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 117 transitions. [2025-03-08 08:48:21,532 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 117 transitions. Word has length 31 [2025-03-08 08:48:21,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 08:48:21,533 INFO L471 AbstractCegarLoop]: Abstraction has 81 states and 117 transitions. [2025-03-08 08:48:21,533 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 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) [2025-03-08 08:48:21,534 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 117 transitions. [2025-03-08 08:48:21,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2025-03-08 08:48:21,535 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 08:48:21,535 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] [2025-03-08 08:48:21,535 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-08 08:48:21,536 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 08:48:21,536 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 08:48:21,536 INFO L85 PathProgramCache]: Analyzing trace with hash 838368409, now seen corresponding path program 1 times [2025-03-08 08:48:21,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 08:48:21,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945501451] [2025-03-08 08:48:21,536 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 08:48:21,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 08:48:21,558 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 32 statements into 1 equivalence classes. [2025-03-08 08:48:21,582 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 32 of 32 statements. [2025-03-08 08:48:21,583 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 08:48:21,583 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 08:48:21,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 08:48:21,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 08:48:21,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945501451] [2025-03-08 08:48:21,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945501451] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 08:48:21,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 08:48:21,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 08:48:21,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340434324] [2025-03-08 08:48:21,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 08:48:21,707 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 08:48:21,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 08:48:21,708 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 08:48:21,708 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 08:48:21,708 INFO L87 Difference]: Start difference. First operand 81 states and 117 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 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) [2025-03-08 08:48:21,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 08:48:21,794 INFO L93 Difference]: Finished difference Result 158 states and 229 transitions. [2025-03-08 08:48:21,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 08:48:21,795 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 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 32 [2025-03-08 08:48:21,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 08:48:21,796 INFO L225 Difference]: With dead ends: 158 [2025-03-08 08:48:21,797 INFO L226 Difference]: Without dead ends: 83 [2025-03-08 08:48:21,797 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 08:48:21,797 INFO L435 NwaCegarLoop]: 95 mSDtfsCounter, 0 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 08:48:21,797 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 277 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 08:48:21,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2025-03-08 08:48:21,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2025-03-08 08:48:21,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 82 states have (on average 1.451219512195122) internal successors, (119), 82 states have internal predecessors, (119), 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) [2025-03-08 08:48:21,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 119 transitions. [2025-03-08 08:48:21,805 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 119 transitions. Word has length 32 [2025-03-08 08:48:21,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 08:48:21,805 INFO L471 AbstractCegarLoop]: Abstraction has 83 states and 119 transitions. [2025-03-08 08:48:21,805 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 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) [2025-03-08 08:48:21,805 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 119 transitions. [2025-03-08 08:48:21,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2025-03-08 08:48:21,806 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 08:48:21,806 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] [2025-03-08 08:48:21,806 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-08 08:48:21,807 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 08:48:21,807 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 08:48:21,807 INFO L85 PathProgramCache]: Analyzing trace with hash -2143841138, now seen corresponding path program 1 times [2025-03-08 08:48:21,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 08:48:21,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180925338] [2025-03-08 08:48:21,807 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 08:48:21,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 08:48:21,826 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 33 statements into 1 equivalence classes. [2025-03-08 08:48:21,864 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 33 of 33 statements. [2025-03-08 08:48:21,864 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 08:48:21,864 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 08:48:22,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 08:48:22,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 08:48:22,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180925338] [2025-03-08 08:48:22,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180925338] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 08:48:22,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 08:48:22,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-08 08:48:22,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243277053] [2025-03-08 08:48:22,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 08:48:22,081 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 08:48:22,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 08:48:22,081 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 08:48:22,081 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-08 08:48:22,082 INFO L87 Difference]: Start difference. First operand 83 states and 119 transitions. Second operand has 6 states, 6 states have (on average 5.5) internal successors, (33), 6 states have internal predecessors, (33), 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) [2025-03-08 08:48:22,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 08:48:22,179 INFO L93 Difference]: Finished difference Result 164 states and 236 transitions. [2025-03-08 08:48:22,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-08 08:48:22,180 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 6 states have internal predecessors, (33), 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 33 [2025-03-08 08:48:22,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 08:48:22,180 INFO L225 Difference]: With dead ends: 164 [2025-03-08 08:48:22,180 INFO L226 Difference]: Without dead ends: 87 [2025-03-08 08:48:22,181 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2025-03-08 08:48:22,182 INFO L435 NwaCegarLoop]: 90 mSDtfsCounter, 98 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 351 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 08:48:22,182 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 351 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 08:48:22,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2025-03-08 08:48:22,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 86. [2025-03-08 08:48:22,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 85 states have (on average 1.4352941176470588) internal successors, (122), 85 states have internal predecessors, (122), 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) [2025-03-08 08:48:22,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 122 transitions. [2025-03-08 08:48:22,191 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 122 transitions. Word has length 33 [2025-03-08 08:48:22,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 08:48:22,192 INFO L471 AbstractCegarLoop]: Abstraction has 86 states and 122 transitions. [2025-03-08 08:48:22,192 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 6 states have internal predecessors, (33), 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) [2025-03-08 08:48:22,193 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 122 transitions. [2025-03-08 08:48:22,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2025-03-08 08:48:22,193 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 08:48:22,193 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] [2025-03-08 08:48:22,193 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-08 08:48:22,194 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 08:48:22,194 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 08:48:22,194 INFO L85 PathProgramCache]: Analyzing trace with hash 609698962, now seen corresponding path program 1 times [2025-03-08 08:48:22,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 08:48:22,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687671599] [2025-03-08 08:48:22,195 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 08:48:22,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 08:48:22,208 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 34 statements into 1 equivalence classes. [2025-03-08 08:48:22,284 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 34 of 34 statements. [2025-03-08 08:48:22,285 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 08:48:22,287 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 08:48:23,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 08:48:23,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 08:48:23,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687671599] [2025-03-08 08:48:23,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687671599] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 08:48:23,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 08:48:23,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-08 08:48:23,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550977314] [2025-03-08 08:48:23,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 08:48:23,119 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-08 08:48:23,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 08:48:23,119 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-08 08:48:23,119 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2025-03-08 08:48:23,119 INFO L87 Difference]: Start difference. First operand 86 states and 122 transitions. Second operand has 10 states, 10 states have (on average 3.4) internal successors, (34), 10 states have internal predecessors, (34), 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) [2025-03-08 08:48:23,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 08:48:23,321 INFO L93 Difference]: Finished difference Result 183 states and 261 transitions. [2025-03-08 08:48:23,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-08 08:48:23,321 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.4) internal successors, (34), 10 states have internal predecessors, (34), 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 34 [2025-03-08 08:48:23,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 08:48:23,323 INFO L225 Difference]: With dead ends: 183 [2025-03-08 08:48:23,323 INFO L226 Difference]: Without dead ends: 103 [2025-03-08 08:48:23,323 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2025-03-08 08:48:23,324 INFO L435 NwaCegarLoop]: 85 mSDtfsCounter, 143 mSDsluCounter, 500 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 585 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 08:48:23,324 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 585 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 08:48:23,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2025-03-08 08:48:23,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 96. [2025-03-08 08:48:23,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 95 states have (on average 1.431578947368421) internal successors, (136), 95 states have internal predecessors, (136), 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) [2025-03-08 08:48:23,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 136 transitions. [2025-03-08 08:48:23,332 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 136 transitions. Word has length 34 [2025-03-08 08:48:23,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 08:48:23,333 INFO L471 AbstractCegarLoop]: Abstraction has 96 states and 136 transitions. [2025-03-08 08:48:23,333 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.4) internal successors, (34), 10 states have internal predecessors, (34), 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) [2025-03-08 08:48:23,333 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 136 transitions. [2025-03-08 08:48:23,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2025-03-08 08:48:23,334 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 08:48:23,334 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] [2025-03-08 08:48:23,334 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-08 08:48:23,334 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 08:48:23,335 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 08:48:23,335 INFO L85 PathProgramCache]: Analyzing trace with hash -1063696151, now seen corresponding path program 1 times [2025-03-08 08:48:23,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 08:48:23,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143914053] [2025-03-08 08:48:23,336 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 08:48:23,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 08:48:23,346 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 35 statements into 1 equivalence classes. [2025-03-08 08:48:23,353 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 35 of 35 statements. [2025-03-08 08:48:23,353 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 08:48:23,353 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 08:48:23,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 08:48:23,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 08:48:23,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143914053] [2025-03-08 08:48:23,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143914053] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 08:48:23,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 08:48:23,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 08:48:23,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006451685] [2025-03-08 08:48:23,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 08:48:23,427 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 08:48:23,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 08:48:23,427 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 08:48:23,427 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-08 08:48:23,428 INFO L87 Difference]: Start difference. First operand 96 states and 136 transitions. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 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) [2025-03-08 08:48:23,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 08:48:23,510 INFO L93 Difference]: Finished difference Result 270 states and 383 transitions. [2025-03-08 08:48:23,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 08:48:23,511 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 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 35 [2025-03-08 08:48:23,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 08:48:23,512 INFO L225 Difference]: With dead ends: 270 [2025-03-08 08:48:23,512 INFO L226 Difference]: Without dead ends: 180 [2025-03-08 08:48:23,512 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2025-03-08 08:48:23,513 INFO L435 NwaCegarLoop]: 88 mSDtfsCounter, 297 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 259 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 08:48:23,513 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [297 Valid, 259 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 08:48:23,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2025-03-08 08:48:23,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 122. [2025-03-08 08:48:23,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 121 states have (on average 1.4297520661157024) internal successors, (173), 121 states have internal predecessors, (173), 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) [2025-03-08 08:48:23,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 173 transitions. [2025-03-08 08:48:23,520 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 173 transitions. Word has length 35 [2025-03-08 08:48:23,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 08:48:23,523 INFO L471 AbstractCegarLoop]: Abstraction has 122 states and 173 transitions. [2025-03-08 08:48:23,524 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 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) [2025-03-08 08:48:23,524 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 173 transitions. [2025-03-08 08:48:23,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2025-03-08 08:48:23,524 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 08:48:23,524 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] [2025-03-08 08:48:23,524 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-08 08:48:23,524 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 08:48:23,525 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 08:48:23,525 INFO L85 PathProgramCache]: Analyzing trace with hash -321698770, now seen corresponding path program 1 times [2025-03-08 08:48:23,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 08:48:23,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938472204] [2025-03-08 08:48:23,525 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 08:48:23,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 08:48:23,538 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 35 statements into 1 equivalence classes. [2025-03-08 08:48:23,559 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 35 of 35 statements. [2025-03-08 08:48:23,559 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 08:48:23,559 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 08:48:23,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 08:48:23,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 08:48:23,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938472204] [2025-03-08 08:48:23,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938472204] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 08:48:23,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 08:48:23,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-08 08:48:23,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976603037] [2025-03-08 08:48:23,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 08:48:23,878 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-08 08:48:23,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 08:48:23,879 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-08 08:48:23,879 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2025-03-08 08:48:23,879 INFO L87 Difference]: Start difference. First operand 122 states and 173 transitions. Second operand has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 9 states have internal predecessors, (35), 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) [2025-03-08 08:48:24,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 08:48:24,040 INFO L93 Difference]: Finished difference Result 239 states and 338 transitions. [2025-03-08 08:48:24,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-08 08:48:24,040 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 9 states have internal predecessors, (35), 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 35 [2025-03-08 08:48:24,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 08:48:24,041 INFO L225 Difference]: With dead ends: 239 [2025-03-08 08:48:24,041 INFO L226 Difference]: Without dead ends: 142 [2025-03-08 08:48:24,041 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2025-03-08 08:48:24,042 INFO L435 NwaCegarLoop]: 90 mSDtfsCounter, 125 mSDsluCounter, 434 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 524 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 08:48:24,042 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 524 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 08:48:24,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2025-03-08 08:48:24,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 142. [2025-03-08 08:48:24,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 141 states have (on average 1.4042553191489362) internal successors, (198), 141 states have internal predecessors, (198), 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) [2025-03-08 08:48:24,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 198 transitions. [2025-03-08 08:48:24,048 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 198 transitions. Word has length 35 [2025-03-08 08:48:24,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 08:48:24,048 INFO L471 AbstractCegarLoop]: Abstraction has 142 states and 198 transitions. [2025-03-08 08:48:24,048 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 9 states have internal predecessors, (35), 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) [2025-03-08 08:48:24,051 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 198 transitions. [2025-03-08 08:48:24,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2025-03-08 08:48:24,052 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 08:48:24,052 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] [2025-03-08 08:48:24,052 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-08 08:48:24,052 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 08:48:24,052 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 08:48:24,052 INFO L85 PathProgramCache]: Analyzing trace with hash -1158608156, now seen corresponding path program 1 times [2025-03-08 08:48:24,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 08:48:24,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711904939] [2025-03-08 08:48:24,052 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 08:48:24,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 08:48:24,064 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 35 statements into 1 equivalence classes. [2025-03-08 08:48:24,080 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 35 of 35 statements. [2025-03-08 08:48:24,080 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 08:48:24,080 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 08:48:24,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 08:48:24,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 08:48:24,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711904939] [2025-03-08 08:48:24,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711904939] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 08:48:24,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 08:48:24,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-08 08:48:24,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386274070] [2025-03-08 08:48:24,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 08:48:24,411 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-08 08:48:24,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 08:48:24,411 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-08 08:48:24,411 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2025-03-08 08:48:24,411 INFO L87 Difference]: Start difference. First operand 142 states and 198 transitions. Second operand has 10 states, 10 states have (on average 3.5) internal successors, (35), 10 states have internal predecessors, (35), 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) [2025-03-08 08:48:24,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 08:48:24,546 INFO L93 Difference]: Finished difference Result 255 states and 357 transitions. [2025-03-08 08:48:24,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-08 08:48:24,547 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.5) internal successors, (35), 10 states have internal predecessors, (35), 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 35 [2025-03-08 08:48:24,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 08:48:24,547 INFO L225 Difference]: With dead ends: 255 [2025-03-08 08:48:24,547 INFO L226 Difference]: Without dead ends: 152 [2025-03-08 08:48:24,548 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2025-03-08 08:48:24,549 INFO L435 NwaCegarLoop]: 95 mSDtfsCounter, 111 mSDsluCounter, 543 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 638 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 08:48:24,551 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 638 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 08:48:24,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2025-03-08 08:48:24,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 149. [2025-03-08 08:48:24,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 148 states have (on average 1.3918918918918919) internal successors, (206), 148 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 08:48:24,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 206 transitions. [2025-03-08 08:48:24,558 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 206 transitions. Word has length 35 [2025-03-08 08:48:24,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 08:48:24,558 INFO L471 AbstractCegarLoop]: Abstraction has 149 states and 206 transitions. [2025-03-08 08:48:24,560 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.5) internal successors, (35), 10 states have internal predecessors, (35), 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) [2025-03-08 08:48:24,560 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 206 transitions. [2025-03-08 08:48:24,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2025-03-08 08:48:24,561 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 08:48:24,561 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] [2025-03-08 08:48:24,561 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-08 08:48:24,561 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 08:48:24,561 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 08:48:24,561 INFO L85 PathProgramCache]: Analyzing trace with hash 583042714, now seen corresponding path program 1 times [2025-03-08 08:48:24,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 08:48:24,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380367700] [2025-03-08 08:48:24,561 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 08:48:24,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 08:48:24,576 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 35 statements into 1 equivalence classes. [2025-03-08 08:48:24,585 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 35 of 35 statements. [2025-03-08 08:48:24,586 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 08:48:24,586 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 08:48:24,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 08:48:24,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 08:48:24,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380367700] [2025-03-08 08:48:24,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380367700] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 08:48:24,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 08:48:24,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 08:48:24,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177256554] [2025-03-08 08:48:24,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 08:48:24,649 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 08:48:24,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 08:48:24,649 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 08:48:24,650 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-08 08:48:24,650 INFO L87 Difference]: Start difference. First operand 149 states and 206 transitions. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 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) [2025-03-08 08:48:24,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 08:48:24,725 INFO L93 Difference]: Finished difference Result 325 states and 448 transitions. [2025-03-08 08:48:24,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 08:48:24,725 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 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 35 [2025-03-08 08:48:24,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 08:48:24,726 INFO L225 Difference]: With dead ends: 325 [2025-03-08 08:48:24,726 INFO L226 Difference]: Without dead ends: 198 [2025-03-08 08:48:24,727 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2025-03-08 08:48:24,727 INFO L435 NwaCegarLoop]: 88 mSDtfsCounter, 295 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 295 SdHoareTripleChecker+Valid, 259 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 08:48:24,727 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [295 Valid, 259 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 08:48:24,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2025-03-08 08:48:24,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 137. [2025-03-08 08:48:24,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 136 states have (on average 1.3823529411764706) internal successors, (188), 136 states have internal predecessors, (188), 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) [2025-03-08 08:48:24,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 188 transitions. [2025-03-08 08:48:24,736 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 188 transitions. Word has length 35 [2025-03-08 08:48:24,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 08:48:24,736 INFO L471 AbstractCegarLoop]: Abstraction has 137 states and 188 transitions. [2025-03-08 08:48:24,736 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 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) [2025-03-08 08:48:24,736 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 188 transitions. [2025-03-08 08:48:24,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2025-03-08 08:48:24,737 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 08:48:24,737 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] [2025-03-08 08:48:24,737 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-08 08:48:24,737 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 08:48:24,737 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 08:48:24,737 INFO L85 PathProgramCache]: Analyzing trace with hash -739704767, now seen corresponding path program 1 times [2025-03-08 08:48:24,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 08:48:24,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626693841] [2025-03-08 08:48:24,737 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 08:48:24,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 08:48:24,749 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 36 statements into 1 equivalence classes. [2025-03-08 08:48:24,756 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 36 of 36 statements. [2025-03-08 08:48:24,757 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 08:48:24,757 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 08:48:24,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 08:48:24,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 08:48:24,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626693841] [2025-03-08 08:48:24,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626693841] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 08:48:24,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 08:48:24,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 08:48:24,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848100080] [2025-03-08 08:48:24,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 08:48:24,821 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 08:48:24,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 08:48:24,821 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 08:48:24,822 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-08 08:48:24,822 INFO L87 Difference]: Start difference. First operand 137 states and 188 transitions. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 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) [2025-03-08 08:48:24,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 08:48:24,910 INFO L93 Difference]: Finished difference Result 302 states and 416 transitions. [2025-03-08 08:48:24,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 08:48:24,910 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 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 36 [2025-03-08 08:48:24,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 08:48:24,911 INFO L225 Difference]: With dead ends: 302 [2025-03-08 08:48:24,911 INFO L226 Difference]: Without dead ends: 182 [2025-03-08 08:48:24,911 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2025-03-08 08:48:24,912 INFO L435 NwaCegarLoop]: 88 mSDtfsCounter, 273 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 259 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 08:48:24,912 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [273 Valid, 259 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 08:48:24,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2025-03-08 08:48:24,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 127. [2025-03-08 08:48:24,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 126 states have (on average 1.380952380952381) internal successors, (174), 126 states have internal predecessors, (174), 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) [2025-03-08 08:48:24,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 174 transitions. [2025-03-08 08:48:24,915 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 174 transitions. Word has length 36 [2025-03-08 08:48:24,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 08:48:24,915 INFO L471 AbstractCegarLoop]: Abstraction has 127 states and 174 transitions. [2025-03-08 08:48:24,915 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 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) [2025-03-08 08:48:24,916 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 174 transitions. [2025-03-08 08:48:24,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2025-03-08 08:48:24,916 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 08:48:24,916 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] [2025-03-08 08:48:24,916 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-08 08:48:24,916 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 08:48:24,916 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 08:48:24,917 INFO L85 PathProgramCache]: Analyzing trace with hash 695355420, now seen corresponding path program 1 times [2025-03-08 08:48:24,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 08:48:24,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301219801] [2025-03-08 08:48:24,917 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 08:48:24,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 08:48:24,925 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 36 statements into 1 equivalence classes. [2025-03-08 08:48:24,959 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 36 of 36 statements. [2025-03-08 08:48:24,959 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 08:48:24,959 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 08:48:25,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 08:48:25,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 08:48:25,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301219801] [2025-03-08 08:48:25,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301219801] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 08:48:25,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 08:48:25,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2025-03-08 08:48:25,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070258899] [2025-03-08 08:48:25,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 08:48:25,279 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-08 08:48:25,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 08:48:25,279 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-08 08:48:25,279 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2025-03-08 08:48:25,279 INFO L87 Difference]: Start difference. First operand 127 states and 174 transitions. Second operand has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 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) [2025-03-08 08:48:25,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 08:48:25,457 INFO L93 Difference]: Finished difference Result 250 states and 347 transitions. [2025-03-08 08:48:25,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-08 08:48:25,458 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 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 36 [2025-03-08 08:48:25,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 08:48:25,459 INFO L225 Difference]: With dead ends: 250 [2025-03-08 08:48:25,459 INFO L226 Difference]: Without dead ends: 142 [2025-03-08 08:48:25,459 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2025-03-08 08:48:25,459 INFO L435 NwaCegarLoop]: 90 mSDtfsCounter, 119 mSDsluCounter, 692 mSDsCounter, 0 mSdLazyCounter, 307 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 782 SdHoareTripleChecker+Invalid, 308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-08 08:48:25,459 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 782 Invalid, 308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 307 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-08 08:48:25,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2025-03-08 08:48:25,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 136. [2025-03-08 08:48:25,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 135 states have (on average 1.385185185185185) internal successors, (187), 135 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 08:48:25,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 187 transitions. [2025-03-08 08:48:25,466 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 187 transitions. Word has length 36 [2025-03-08 08:48:25,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 08:48:25,467 INFO L471 AbstractCegarLoop]: Abstraction has 136 states and 187 transitions. [2025-03-08 08:48:25,467 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 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) [2025-03-08 08:48:25,467 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 187 transitions. [2025-03-08 08:48:25,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2025-03-08 08:48:25,467 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 08:48:25,467 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] [2025-03-08 08:48:25,467 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-08 08:48:25,467 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 08:48:25,468 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 08:48:25,468 INFO L85 PathProgramCache]: Analyzing trace with hash -172836247, now seen corresponding path program 1 times [2025-03-08 08:48:25,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 08:48:25,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883758988] [2025-03-08 08:48:25,468 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 08:48:25,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 08:48:25,480 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 37 statements into 1 equivalence classes. [2025-03-08 08:48:25,494 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 37 of 37 statements. [2025-03-08 08:48:25,494 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 08:48:25,494 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 08:48:25,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 08:48:25,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 08:48:25,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883758988] [2025-03-08 08:48:25,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883758988] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 08:48:25,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 08:48:25,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 08:48:25,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362233492] [2025-03-08 08:48:25,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 08:48:25,573 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 08:48:25,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 08:48:25,574 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 08:48:25,574 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-08 08:48:25,574 INFO L87 Difference]: Start difference. First operand 136 states and 187 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 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) [2025-03-08 08:48:25,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 08:48:25,652 INFO L93 Difference]: Finished difference Result 306 states and 422 transitions. [2025-03-08 08:48:25,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 08:48:25,653 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 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 37 [2025-03-08 08:48:25,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 08:48:25,654 INFO L225 Difference]: With dead ends: 306 [2025-03-08 08:48:25,654 INFO L226 Difference]: Without dead ends: 189 [2025-03-08 08:48:25,654 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2025-03-08 08:48:25,656 INFO L435 NwaCegarLoop]: 88 mSDtfsCounter, 253 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 253 SdHoareTripleChecker+Valid, 259 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 08:48:25,656 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [253 Valid, 259 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 08:48:25,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2025-03-08 08:48:25,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 141. [2025-03-08 08:48:25,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 140 states have (on average 1.3714285714285714) internal successors, (192), 140 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 08:48:25,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 192 transitions. [2025-03-08 08:48:25,661 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 192 transitions. Word has length 37 [2025-03-08 08:48:25,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 08:48:25,662 INFO L471 AbstractCegarLoop]: Abstraction has 141 states and 192 transitions. [2025-03-08 08:48:25,662 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 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) [2025-03-08 08:48:25,662 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 192 transitions. [2025-03-08 08:48:25,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2025-03-08 08:48:25,663 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 08:48:25,664 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] [2025-03-08 08:48:25,664 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-08 08:48:25,664 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 08:48:25,664 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 08:48:25,665 INFO L85 PathProgramCache]: Analyzing trace with hash -170975186, now seen corresponding path program 1 times [2025-03-08 08:48:25,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 08:48:25,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786634152] [2025-03-08 08:48:25,665 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 08:48:25,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 08:48:25,678 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 37 statements into 1 equivalence classes. [2025-03-08 08:48:25,691 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 37 of 37 statements. [2025-03-08 08:48:25,692 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 08:48:25,692 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 08:48:26,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 08:48:26,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 08:48:26,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786634152] [2025-03-08 08:48:26,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786634152] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 08:48:26,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 08:48:26,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2025-03-08 08:48:26,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733617832] [2025-03-08 08:48:26,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 08:48:26,052 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-03-08 08:48:26,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 08:48:26,053 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-03-08 08:48:26,054 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2025-03-08 08:48:26,054 INFO L87 Difference]: Start difference. First operand 141 states and 192 transitions. Second operand has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 14 states have internal predecessors, (37), 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) [2025-03-08 08:48:26,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 08:48:26,286 INFO L93 Difference]: Finished difference Result 272 states and 376 transitions. [2025-03-08 08:48:26,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-03-08 08:48:26,286 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 14 states have internal predecessors, (37), 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 37 [2025-03-08 08:48:26,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 08:48:26,287 INFO L225 Difference]: With dead ends: 272 [2025-03-08 08:48:26,288 INFO L226 Difference]: Without dead ends: 155 [2025-03-08 08:48:26,289 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2025-03-08 08:48:26,289 INFO L435 NwaCegarLoop]: 90 mSDtfsCounter, 128 mSDsluCounter, 859 mSDsCounter, 0 mSdLazyCounter, 428 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 949 SdHoareTripleChecker+Invalid, 431 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 428 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-08 08:48:26,289 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 949 Invalid, 431 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 428 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-08 08:48:26,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2025-03-08 08:48:26,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 149. [2025-03-08 08:48:26,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 148 states have (on average 1.3716216216216217) internal successors, (203), 148 states have internal predecessors, (203), 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) [2025-03-08 08:48:26,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 203 transitions. [2025-03-08 08:48:26,294 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 203 transitions. Word has length 37 [2025-03-08 08:48:26,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 08:48:26,294 INFO L471 AbstractCegarLoop]: Abstraction has 149 states and 203 transitions. [2025-03-08 08:48:26,294 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 14 states have internal predecessors, (37), 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) [2025-03-08 08:48:26,294 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 203 transitions. [2025-03-08 08:48:26,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2025-03-08 08:48:26,294 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 08:48:26,294 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] [2025-03-08 08:48:26,295 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-03-08 08:48:26,295 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 08:48:26,295 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 08:48:26,295 INFO L85 PathProgramCache]: Analyzing trace with hash -926877446, now seen corresponding path program 1 times [2025-03-08 08:48:26,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 08:48:26,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87486973] [2025-03-08 08:48:26,295 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 08:48:26,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 08:48:26,303 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 37 statements into 1 equivalence classes. [2025-03-08 08:48:26,313 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 37 of 37 statements. [2025-03-08 08:48:26,313 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 08:48:26,313 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 08:48:26,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 08:48:26,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 08:48:26,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87486973] [2025-03-08 08:48:26,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87486973] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 08:48:26,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 08:48:26,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2025-03-08 08:48:26,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184964696] [2025-03-08 08:48:26,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 08:48:26,654 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-03-08 08:48:26,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 08:48:26,655 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-03-08 08:48:26,655 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2025-03-08 08:48:26,655 INFO L87 Difference]: Start difference. First operand 149 states and 203 transitions. Second operand has 16 states, 16 states have (on average 2.3125) internal successors, (37), 16 states have internal predecessors, (37), 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) [2025-03-08 08:48:26,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 08:48:26,962 INFO L93 Difference]: Finished difference Result 299 states and 413 transitions. [2025-03-08 08:48:26,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-03-08 08:48:26,963 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.3125) internal successors, (37), 16 states have internal predecessors, (37), 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 37 [2025-03-08 08:48:26,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 08:48:26,964 INFO L225 Difference]: With dead ends: 299 [2025-03-08 08:48:26,964 INFO L226 Difference]: Without dead ends: 174 [2025-03-08 08:48:26,964 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2025-03-08 08:48:26,966 INFO L435 NwaCegarLoop]: 84 mSDtfsCounter, 127 mSDsluCounter, 1047 mSDsCounter, 0 mSdLazyCounter, 624 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 1131 SdHoareTripleChecker+Invalid, 625 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 624 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-08 08:48:26,966 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 1131 Invalid, 625 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 624 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-08 08:48:26,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2025-03-08 08:48:26,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 167. [2025-03-08 08:48:26,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 166 states have (on average 1.3795180722891567) internal successors, (229), 166 states have internal predecessors, (229), 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) [2025-03-08 08:48:26,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 229 transitions. [2025-03-08 08:48:26,972 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 229 transitions. Word has length 37 [2025-03-08 08:48:26,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 08:48:26,972 INFO L471 AbstractCegarLoop]: Abstraction has 167 states and 229 transitions. [2025-03-08 08:48:26,972 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.3125) internal successors, (37), 16 states have internal predecessors, (37), 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) [2025-03-08 08:48:26,972 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 229 transitions. [2025-03-08 08:48:26,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2025-03-08 08:48:26,973 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 08:48:26,973 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] [2025-03-08 08:48:26,973 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-03-08 08:48:26,974 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 08:48:26,974 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 08:48:26,974 INFO L85 PathProgramCache]: Analyzing trace with hash -319132250, now seen corresponding path program 1 times [2025-03-08 08:48:26,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 08:48:26,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695190493] [2025-03-08 08:48:26,974 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 08:48:26,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 08:48:26,985 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 38 statements into 1 equivalence classes. [2025-03-08 08:48:26,996 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 38 of 38 statements. [2025-03-08 08:48:26,996 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 08:48:26,997 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-08 08:48:26,997 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-08 08:48:27,000 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 38 statements into 1 equivalence classes. [2025-03-08 08:48:27,007 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 38 of 38 statements. [2025-03-08 08:48:27,008 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 08:48:27,008 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-08 08:48:27,025 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-08 08:48:27,025 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-08 08:48:27,026 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2025-03-08 08:48:27,027 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-03-08 08:48:27,029 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 08:48:27,058 WARN L310 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2025-03-08 08:48:27,067 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-03-08 08:48:27,070 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.03 08:48:27 BoogieIcfgContainer [2025-03-08 08:48:27,071 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-03-08 08:48:27,072 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-08 08:48:27,072 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-08 08:48:27,072 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-08 08:48:27,072 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 08:48:20" (3/4) ... [2025-03-08 08:48:27,074 INFO L149 WitnessPrinter]: No result that supports witness generation found [2025-03-08 08:48:27,074 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-08 08:48:27,075 INFO L158 Benchmark]: Toolchain (without parser) took 7231.87ms. Allocated memory was 142.6MB in the beginning and 352.3MB in the end (delta: 209.7MB). Free memory was 104.7MB in the beginning and 113.1MB in the end (delta: -8.4MB). Peak memory consumption was 198.7MB. Max. memory is 16.1GB. [2025-03-08 08:48:27,076 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 201.3MB. Free memory is still 126.6MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-08 08:48:27,076 INFO L158 Benchmark]: CACSL2BoogieTranslator took 216.58ms. Allocated memory is still 142.6MB. Free memory was 104.7MB in the beginning and 90.3MB in the end (delta: 14.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-03-08 08:48:27,076 INFO L158 Benchmark]: Boogie Procedure Inliner took 51.48ms. Allocated memory is still 142.6MB. Free memory was 90.3MB in the beginning and 82.9MB in the end (delta: 7.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-08 08:48:27,076 INFO L158 Benchmark]: Boogie Preprocessor took 50.88ms. Allocated memory is still 142.6MB. Free memory was 82.9MB in the beginning and 78.9MB in the end (delta: 4.0MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-08 08:48:27,076 INFO L158 Benchmark]: IcfgBuilder took 643.44ms. Allocated memory is still 142.6MB. Free memory was 78.9MB in the beginning and 101.1MB in the end (delta: -22.2MB). Peak memory consumption was 57.4MB. Max. memory is 16.1GB. [2025-03-08 08:48:27,077 INFO L158 Benchmark]: TraceAbstraction took 6262.27ms. Allocated memory was 142.6MB in the beginning and 352.3MB in the end (delta: 209.7MB). Free memory was 101.1MB in the beginning and 113.1MB in the end (delta: -12.1MB). Peak memory consumption was 191.7MB. Max. memory is 16.1GB. [2025-03-08 08:48:27,077 INFO L158 Benchmark]: Witness Printer took 2.68ms. Allocated memory is still 352.3MB. Free memory was 113.1MB in the beginning and 113.1MB in the end (delta: 72.1kB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-08 08:48:27,078 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 201.3MB. Free memory is still 126.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 216.58ms. Allocated memory is still 142.6MB. Free memory was 104.7MB in the beginning and 90.3MB in the end (delta: 14.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 51.48ms. Allocated memory is still 142.6MB. Free memory was 90.3MB in the beginning and 82.9MB in the end (delta: 7.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 50.88ms. Allocated memory is still 142.6MB. Free memory was 82.9MB in the beginning and 78.9MB in the end (delta: 4.0MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 643.44ms. Allocated memory is still 142.6MB. Free memory was 78.9MB in the beginning and 101.1MB in the end (delta: -22.2MB). Peak memory consumption was 57.4MB. Max. memory is 16.1GB. * TraceAbstraction took 6262.27ms. Allocated memory was 142.6MB in the beginning and 352.3MB in the end (delta: 209.7MB). Free memory was 101.1MB in the beginning and 113.1MB in the end (delta: -12.1MB). Peak memory consumption was 191.7MB. Max. memory is 16.1GB. * Witness Printer took 2.68ms. Allocated memory is still 352.3MB. Free memory was 113.1MB in the beginning and 113.1MB in the end (delta: 72.1kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 21]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of bitwiseAnd at line 113. Possible FailurePath: [L26] const SORT_1 mask_SORT_1 = (SORT_1)-1 >> (sizeof(SORT_1) * 8 - 1); [L27] const SORT_1 msb_SORT_1 = (SORT_1)1 << (1 - 1); [L29] const SORT_4 mask_SORT_4 = (SORT_4)-1 >> (sizeof(SORT_4) * 8 - 8); [L30] const SORT_4 msb_SORT_4 = (SORT_4)1 << (8 - 1); [L32] const SORT_8 mask_SORT_8 = (SORT_8)-1 >> (sizeof(SORT_8) * 8 - 32); [L33] const SORT_8 msb_SORT_8 = (SORT_8)1 << (32 - 1); [L35] const SORT_52 mask_SORT_52 = (SORT_52)-1 >> (sizeof(SORT_52) * 8 - 2); [L36] const SORT_52 msb_SORT_52 = (SORT_52)1 << (2 - 1); [L38] const SORT_54 mask_SORT_54 = (SORT_54)-1 >> (sizeof(SORT_54) * 8 - 3); [L39] const SORT_54 msb_SORT_54 = (SORT_54)1 << (3 - 1); [L41] const SORT_4 var_5 = 0; [L42] const SORT_8 var_10 = 0; [L43] const SORT_8 var_13 = 1; [L44] const SORT_8 var_17 = 2; [L45] const SORT_8 var_21 = 3; [L46] const SORT_8 var_25 = 4; [L47] const SORT_1 var_30 = 1; [L48] const SORT_4 var_41 = 1; [L49] const SORT_4 var_44 = 4; [L50] const SORT_4 var_45 = 3; [L51] const SORT_4 var_50 = 2; [L53] SORT_1 input_2; [L54] SORT_1 input_3; [L56] EXPR __VERIFIER_nondet_uchar() & mask_SORT_4 VAL [mask_SORT_1=1, mask_SORT_4=255, mask_SORT_52=3, mask_SORT_54=7, var_10=0, var_13=1, var_17=2, var_21=3, var_25=4, var_30=1, var_41=1, var_44=4, var_45=3, var_50=2, var_5=0] [L56] SORT_4 state_6 = __VERIFIER_nondet_uchar() & mask_SORT_4; [L58] SORT_4 init_7_arg_1 = var_5; [L59] state_6 = init_7_arg_1 VAL [mask_SORT_1=1, mask_SORT_4=255, mask_SORT_52=3, mask_SORT_54=7, state_6=0, var_10=0, var_13=1, var_17=2, var_21=3, var_25=4, var_30=1, var_41=1, var_44=4, var_45=3, var_50=2, var_5=0] [L62] input_2 = __VERIFIER_nondet_uchar() [L63] input_3 = __VERIFIER_nondet_uchar() [L64] EXPR input_3 & mask_SORT_1 VAL [mask_SORT_1=1, mask_SORT_4=255, mask_SORT_52=3, mask_SORT_54=7, state_6=0, var_10=0, var_13=1, var_17=2, var_21=3, var_25=4, var_30=1, var_41=1, var_44=4, var_45=3, var_50=2, var_5=0] [L64] input_3 = input_3 & mask_SORT_1 [L67] SORT_4 var_9_arg_0 = state_6; VAL [input_3=0, mask_SORT_1=1, mask_SORT_4=255, mask_SORT_52=3, mask_SORT_54=7, state_6=0, var_10=0, var_13=1, var_17=2, var_21=3, var_25=4, var_30=1, var_41=1, var_44=4, var_45=3, var_50=2, var_5=0, var_9_arg_0=0] [L68] EXPR var_9_arg_0 & mask_SORT_4 VAL [input_3=0, mask_SORT_1=1, mask_SORT_4=255, mask_SORT_52=3, mask_SORT_54=7, state_6=0, var_10=0, var_13=1, var_17=2, var_21=3, var_25=4, var_30=1, var_41=1, var_44=4, var_45=3, var_50=2, var_5=0] [L68] var_9_arg_0 = var_9_arg_0 & mask_SORT_4 [L69] SORT_8 var_9 = var_9_arg_0; [L70] SORT_8 var_11_arg_0 = var_9; [L71] SORT_8 var_11_arg_1 = var_10; [L72] SORT_1 var_11 = var_11_arg_0 == var_11_arg_1; [L73] SORT_4 var_12_arg_0 = state_6; VAL [input_3=0, mask_SORT_1=1, mask_SORT_4=255, mask_SORT_52=3, mask_SORT_54=7, state_6=0, var_10=0, var_11=1, var_12_arg_0=0, var_13=1, var_17=2, var_21=3, var_25=4, var_30=1, var_41=1, var_44=4, var_45=3, var_50=2, var_5=0] [L74] EXPR var_12_arg_0 & mask_SORT_4 VAL [input_3=0, mask_SORT_1=1, mask_SORT_4=255, mask_SORT_52=3, mask_SORT_54=7, state_6=0, var_10=0, var_11=1, var_13=1, var_17=2, var_21=3, var_25=4, var_30=1, var_41=1, var_44=4, var_45=3, var_50=2, var_5=0] [L74] var_12_arg_0 = var_12_arg_0 & mask_SORT_4 [L75] SORT_8 var_12 = var_12_arg_0; [L76] SORT_8 var_14_arg_0 = var_12; [L77] SORT_8 var_14_arg_1 = var_13; [L78] SORT_1 var_14 = var_14_arg_0 == var_14_arg_1; [L79] SORT_1 var_15_arg_0 = var_11; [L80] SORT_1 var_15_arg_1 = var_14; VAL [input_3=0, mask_SORT_1=1, mask_SORT_4=255, mask_SORT_52=3, mask_SORT_54=7, state_6=0, var_10=0, var_13=1, var_15_arg_0=1, var_15_arg_1=0, var_17=2, var_21=3, var_25=4, var_30=1, var_41=1, var_44=4, var_45=3, var_50=2, var_5=0] [L81] EXPR var_15_arg_0 | var_15_arg_1 VAL [input_3=0, mask_SORT_1=1, mask_SORT_4=255, mask_SORT_52=3, mask_SORT_54=7, state_6=0, var_10=0, var_13=1, var_17=2, var_21=3, var_25=4, var_30=1, var_41=1, var_44=4, var_45=3, var_50=2, var_5=0] [L81] SORT_1 var_15 = var_15_arg_0 | var_15_arg_1; [L82] SORT_4 var_16_arg_0 = state_6; VAL [input_3=0, mask_SORT_1=1, mask_SORT_4=255, mask_SORT_52=3, mask_SORT_54=7, state_6=0, var_10=0, var_13=1, var_15=1, var_16_arg_0=0, var_17=2, var_21=3, var_25=4, var_30=1, var_41=1, var_44=4, var_45=3, var_50=2, var_5=0] [L83] EXPR var_16_arg_0 & mask_SORT_4 VAL [input_3=0, mask_SORT_1=1, mask_SORT_4=255, mask_SORT_52=3, mask_SORT_54=7, state_6=0, var_10=0, var_13=1, var_15=1, var_17=2, var_21=3, var_25=4, var_30=1, var_41=1, var_44=4, var_45=3, var_50=2, var_5=0] [L83] var_16_arg_0 = var_16_arg_0 & mask_SORT_4 [L84] SORT_8 var_16 = var_16_arg_0; [L85] SORT_8 var_18_arg_0 = var_16; [L86] SORT_8 var_18_arg_1 = var_17; [L87] SORT_1 var_18 = var_18_arg_0 == var_18_arg_1; [L88] SORT_1 var_19_arg_0 = var_15; [L89] SORT_1 var_19_arg_1 = var_18; VAL [input_3=0, mask_SORT_1=1, mask_SORT_4=255, mask_SORT_52=3, mask_SORT_54=7, state_6=0, var_10=0, var_13=1, var_17=2, var_19_arg_0=1, var_19_arg_1=0, var_21=3, var_25=4, var_30=1, var_41=1, var_44=4, var_45=3, var_50=2, var_5=0] [L90] EXPR var_19_arg_0 | var_19_arg_1 VAL [input_3=0, mask_SORT_1=1, mask_SORT_4=255, mask_SORT_52=3, mask_SORT_54=7, state_6=0, var_10=0, var_13=1, var_17=2, var_21=3, var_25=4, var_30=1, var_41=1, var_44=4, var_45=3, var_50=2, var_5=0] [L90] SORT_1 var_19 = var_19_arg_0 | var_19_arg_1; [L91] SORT_4 var_20_arg_0 = state_6; VAL [input_3=0, mask_SORT_1=1, mask_SORT_4=255, mask_SORT_52=3, mask_SORT_54=7, state_6=0, var_10=0, var_13=1, var_17=2, var_19=1, var_20_arg_0=0, var_21=3, var_25=4, var_30=1, var_41=1, var_44=4, var_45=3, var_50=2, var_5=0] [L92] EXPR var_20_arg_0 & mask_SORT_4 VAL [input_3=0, mask_SORT_1=1, mask_SORT_4=255, mask_SORT_52=3, mask_SORT_54=7, state_6=0, var_10=0, var_13=1, var_17=2, var_19=1, var_21=3, var_25=4, var_30=1, var_41=1, var_44=4, var_45=3, var_50=2, var_5=0] [L92] var_20_arg_0 = var_20_arg_0 & mask_SORT_4 [L93] SORT_8 var_20 = var_20_arg_0; [L94] SORT_8 var_22_arg_0 = var_20; [L95] SORT_8 var_22_arg_1 = var_21; [L96] SORT_1 var_22 = var_22_arg_0 == var_22_arg_1; [L97] SORT_1 var_23_arg_0 = var_19; [L98] SORT_1 var_23_arg_1 = var_22; VAL [input_3=0, mask_SORT_1=1, mask_SORT_4=255, mask_SORT_52=3, mask_SORT_54=7, state_6=0, var_10=0, var_13=1, var_17=2, var_21=3, var_23_arg_0=1, var_23_arg_1=0, var_25=4, var_30=1, var_41=1, var_44=4, var_45=3, var_50=2, var_5=0] [L99] EXPR var_23_arg_0 | var_23_arg_1 VAL [input_3=0, mask_SORT_1=1, mask_SORT_4=255, mask_SORT_52=3, mask_SORT_54=7, state_6=0, var_10=0, var_13=1, var_17=2, var_21=3, var_25=4, var_30=1, var_41=1, var_44=4, var_45=3, var_50=2, var_5=0] [L99] SORT_1 var_23 = var_23_arg_0 | var_23_arg_1; [L100] SORT_4 var_24_arg_0 = state_6; VAL [input_3=0, mask_SORT_1=1, mask_SORT_4=255, mask_SORT_52=3, mask_SORT_54=7, state_6=0, var_10=0, var_13=1, var_17=2, var_21=3, var_23=1, var_24_arg_0=0, var_25=4, var_30=1, var_41=1, var_44=4, var_45=3, var_50=2, var_5=0] [L101] EXPR var_24_arg_0 & mask_SORT_4 VAL [input_3=0, mask_SORT_1=1, mask_SORT_4=255, mask_SORT_52=3, mask_SORT_54=7, state_6=0, var_10=0, var_13=1, var_17=2, var_21=3, var_23=1, var_25=4, var_30=1, var_41=1, var_44=4, var_45=3, var_50=2, var_5=0] [L101] var_24_arg_0 = var_24_arg_0 & mask_SORT_4 [L102] SORT_8 var_24 = var_24_arg_0; [L103] SORT_8 var_26_arg_0 = var_24; [L104] SORT_8 var_26_arg_1 = var_25; [L105] SORT_1 var_26 = var_26_arg_0 == var_26_arg_1; [L106] SORT_1 var_27_arg_0 = var_23; [L107] SORT_1 var_27_arg_1 = var_26; VAL [input_3=0, mask_SORT_1=1, mask_SORT_4=255, mask_SORT_52=3, mask_SORT_54=7, state_6=0, var_10=0, var_13=1, var_17=2, var_21=3, var_25=4, var_27_arg_0=1, var_27_arg_1=0, var_30=1, var_41=1, var_44=4, var_45=3, var_50=2, var_5=0] [L108] EXPR var_27_arg_0 | var_27_arg_1 VAL [input_3=0, mask_SORT_1=1, mask_SORT_4=255, mask_SORT_52=3, mask_SORT_54=7, state_6=0, var_10=0, var_13=1, var_17=2, var_21=3, var_25=4, var_30=1, var_41=1, var_44=4, var_45=3, var_50=2, var_5=0] [L108] SORT_1 var_27 = var_27_arg_0 | var_27_arg_1; [L109] SORT_1 var_31_arg_0 = var_27; [L110] SORT_1 var_31 = ~var_31_arg_0; [L111] SORT_1 var_32_arg_0 = var_30; [L112] SORT_1 var_32_arg_1 = var_31; VAL [input_3=0, mask_SORT_1=1, mask_SORT_4=255, mask_SORT_52=3, mask_SORT_54=7, state_6=0, var_10=0, var_13=1, var_17=2, var_21=3, var_25=4, var_30=1, var_32_arg_0=1, var_32_arg_1=-2, var_41=1, var_44=4, var_45=3, var_50=2, var_5=0] [L113] EXPR var_32_arg_0 & var_32_arg_1 VAL [input_3=0, mask_SORT_1=1, mask_SORT_4=255, mask_SORT_52=3, mask_SORT_54=7, state_6=0, var_10=0, var_13=1, var_17=2, var_21=3, var_25=4, var_30=1, var_41=1, var_44=4, var_45=3, var_50=2, var_5=0] [L113] SORT_1 var_32 = var_32_arg_0 & var_32_arg_1; [L114] EXPR var_32 & mask_SORT_1 VAL [input_3=0, mask_SORT_1=1, mask_SORT_4=255, mask_SORT_52=3, mask_SORT_54=7, state_6=0, var_10=0, var_13=1, var_17=2, var_21=3, var_25=4, var_30=1, var_41=1, var_44=4, var_45=3, var_50=2, var_5=0] [L114] var_32 = var_32 & mask_SORT_1 [L115] SORT_1 bad_33_arg_0 = var_32; [L116] CALL __VERIFIER_assert(!(bad_33_arg_0)) [L21] COND TRUE !(cond) [L21] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 82 locations, 119 edges, 1 error locations. Started 1 CEGAR loops. OverallTime: 6.2s, OverallIterations: 14, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1969 SdHoareTripleChecker+Valid, 1.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1969 mSDsluCounter, 6553 SdHoareTripleChecker+Invalid, 1.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 5387 mSDsCounter, 8 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2549 IncrementalHoareTripleChecker+Invalid, 2557 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8 mSolverCounterUnsat, 1166 mSDtfsCounter, 2549 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 137 GetRequests, 35 SyntacticMatches, 1 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=167occurred in iteration=13, InterpolantAutomatonStates: 104, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 13 MinimizatonAttempts, 252 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.5s InterpolantComputationTime, 491 NumberOfCodeBlocks, 491 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 440 ConstructedInterpolants, 0 QuantifiedInterpolants, 1457 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 13 InterpolantComputations, 13 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2025-03-08 08:48:27,102 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 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_segments.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 827228a8fb731d7038bb1b8c7cce3c35edda9a5c3ee552084966688fbdc104d2 --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-08 08:48:28,972 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-08 08:48:29,052 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2025-03-08 08:48:29,056 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-08 08:48:29,056 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-08 08:48:29,069 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-08 08:48:29,069 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-08 08:48:29,070 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-08 08:48:29,070 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-08 08:48:29,070 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-08 08:48:29,070 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-08 08:48:29,070 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-08 08:48:29,070 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-08 08:48:29,070 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-08 08:48:29,070 INFO L153 SettingsManager]: * Use SBE=true [2025-03-08 08:48:29,071 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-08 08:48:29,071 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-08 08:48:29,071 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-08 08:48:29,071 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-08 08:48:29,071 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-08 08:48:29,071 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-08 08:48:29,071 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-08 08:48:29,071 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-03-08 08:48:29,071 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-03-08 08:48:29,071 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-08 08:48:29,071 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-08 08:48:29,071 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-08 08:48:29,071 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-08 08:48:29,071 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-08 08:48:29,071 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-08 08:48:29,071 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-08 08:48:29,072 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 08:48:29,072 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-08 08:48:29,072 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-08 08:48:29,072 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-08 08:48:29,072 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-08 08:48:29,072 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-03-08 08:48:29,072 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-03-08 08:48:29,072 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-08 08:48:29,072 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-08 08:48:29,072 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-08 08:48:29,072 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-08 08:48:29,072 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 827228a8fb731d7038bb1b8c7cce3c35edda9a5c3ee552084966688fbdc104d2 [2025-03-08 08:48:29,275 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-08 08:48:29,283 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-08 08:48:29,285 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-08 08:48:29,286 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-08 08:48:29,286 INFO L274 PluginConnector]: CDTParser initialized [2025-03-08 08:48:29,287 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_segments.c [2025-03-08 08:48:30,440 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f66ed9911/fd4543954aab4265b364861954706099/FLAG3e0107ce7 [2025-03-08 08:48:30,612 INFO L384 CDTParser]: Found 1 translation units. [2025-03-08 08:48:30,614 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_segments.c [2025-03-08 08:48:30,622 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f66ed9911/fd4543954aab4265b364861954706099/FLAG3e0107ce7 [2025-03-08 08:48:30,637 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f66ed9911/fd4543954aab4265b364861954706099 [2025-03-08 08:48:30,639 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-08 08:48:30,640 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-08 08:48:30,641 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-08 08:48:30,641 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-08 08:48:30,644 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-08 08:48:30,645 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 08:48:30" (1/1) ... [2025-03-08 08:48:30,647 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6373e5c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 08:48:30, skipping insertion in model container [2025-03-08 08:48:30,647 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 08:48:30" (1/1) ... [2025-03-08 08:48:30,662 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-08 08:48:30,769 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_segments.c[1250,1263] [2025-03-08 08:48:30,820 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 08:48:30,833 INFO L200 MainTranslator]: Completed pre-run [2025-03-08 08:48:30,839 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_segments.c[1250,1263] [2025-03-08 08:48:30,862 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 08:48:30,872 INFO L204 MainTranslator]: Completed translation [2025-03-08 08:48:30,873 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 08:48:30 WrapperNode [2025-03-08 08:48:30,874 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-08 08:48:30,874 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-08 08:48:30,875 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-08 08:48:30,875 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-08 08:48:30,879 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 08:48:30" (1/1) ... [2025-03-08 08:48:30,888 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 08:48:30" (1/1) ... [2025-03-08 08:48:30,909 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 163 [2025-03-08 08:48:30,911 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-08 08:48:30,911 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-08 08:48:30,912 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-08 08:48:30,912 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-08 08:48:30,918 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 08:48:30" (1/1) ... [2025-03-08 08:48:30,918 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 08:48:30" (1/1) ... [2025-03-08 08:48:30,927 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 08:48:30" (1/1) ... [2025-03-08 08:48:30,939 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]. [2025-03-08 08:48:30,939 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 08:48:30" (1/1) ... [2025-03-08 08:48:30,939 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 08:48:30" (1/1) ... [2025-03-08 08:48:30,951 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 08:48:30" (1/1) ... [2025-03-08 08:48:30,954 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 08:48:30" (1/1) ... [2025-03-08 08:48:30,955 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 08:48:30" (1/1) ... [2025-03-08 08:48:30,956 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 08:48:30" (1/1) ... [2025-03-08 08:48:30,958 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-08 08:48:30,962 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-08 08:48:30,962 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-08 08:48:30,962 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-08 08:48:30,963 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 08:48:30" (1/1) ... [2025-03-08 08:48:30,966 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 08:48:30,977 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 08:48:30,988 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) [2025-03-08 08:48:30,991 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 [2025-03-08 08:48:31,022 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-08 08:48:31,022 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2025-03-08 08:48:31,022 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-08 08:48:31,022 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-08 08:48:31,103 INFO L256 CfgBuilder]: Building ICFG [2025-03-08 08:48:31,104 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-08 08:48:31,291 INFO L? ?]: Removed 56 outVars from TransFormulas that were not future-live. [2025-03-08 08:48:31,291 INFO L307 CfgBuilder]: Performing block encoding [2025-03-08 08:48:31,304 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-08 08:48:31,304 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-08 08:48:31,305 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 08:48:31 BoogieIcfgContainer [2025-03-08 08:48:31,305 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-08 08:48:31,307 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-08 08:48:31,307 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-08 08:48:31,311 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-08 08:48:31,312 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.03 08:48:30" (1/3) ... [2025-03-08 08:48:31,312 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f274b19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 08:48:31, skipping insertion in model container [2025-03-08 08:48:31,312 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 08:48:30" (2/3) ... [2025-03-08 08:48:31,312 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f274b19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 08:48:31, skipping insertion in model container [2025-03-08 08:48:31,312 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 08:48:31" (3/3) ... [2025-03-08 08:48:31,313 INFO L128 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.h_segments.c [2025-03-08 08:48:31,326 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-08 08:48:31,327 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG btor2c-lazyMod.h_segments.c that has 1 procedures, 10 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-08 08:48:31,366 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-08 08:48:31,376 INFO L333 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;@73a03550, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-08 08:48:31,376 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-08 08:48:31,379 INFO L276 IsEmpty]: Start isEmpty. Operand has 10 states, 8 states have (on average 1.375) internal successors, (11), 9 states have internal predecessors, (11), 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) [2025-03-08 08:48:31,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2025-03-08 08:48:31,383 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 08:48:31,384 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2025-03-08 08:48:31,384 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 08:48:31,388 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 08:48:31,388 INFO L85 PathProgramCache]: Analyzing trace with hash 38140359, now seen corresponding path program 1 times [2025-03-08 08:48:31,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-08 08:48:31,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [877663874] [2025-03-08 08:48:31,396 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 08:48:31,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 08:48:31,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 08:48:31,401 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) [2025-03-08 08:48:31,402 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-08 08:48:31,466 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-03-08 08:48:31,488 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-03-08 08:48:31,489 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 08:48:31,489 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 08:48:31,491 INFO L256 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 26 conjuncts are in the unsatisfiable core [2025-03-08 08:48:31,499 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 08:48:31,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 08:48:31,681 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 08:48:31,682 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-08 08:48:31,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [877663874] [2025-03-08 08:48:31,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [877663874] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 08:48:31,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 08:48:31,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 08:48:31,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737192212] [2025-03-08 08:48:31,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 08:48:31,687 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 08:48:31,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-08 08:48:31,700 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 08:48:31,700 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 08:48:31,702 INFO L87 Difference]: Start difference. First operand has 10 states, 8 states have (on average 1.375) internal successors, (11), 9 states have internal predecessors, (11), 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 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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) [2025-03-08 08:48:31,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 08:48:31,740 INFO L93 Difference]: Finished difference Result 18 states and 23 transitions. [2025-03-08 08:48:31,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 08:48:31,743 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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 5 [2025-03-08 08:48:31,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 08:48:31,747 INFO L225 Difference]: With dead ends: 18 [2025-03-08 08:48:31,748 INFO L226 Difference]: Without dead ends: 10 [2025-03-08 08:48:31,750 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-08 08:48:31,751 INFO L435 NwaCegarLoop]: 4 mSDtfsCounter, 2 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 08:48:31,753 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 11 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 08:48:31,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2025-03-08 08:48:31,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2025-03-08 08:48:31,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 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) [2025-03-08 08:48:31,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2025-03-08 08:48:31,770 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2025-03-08 08:48:31,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 08:48:31,771 INFO L471 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2025-03-08 08:48:31,772 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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) [2025-03-08 08:48:31,773 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2025-03-08 08:48:31,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2025-03-08 08:48:31,773 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 08:48:31,773 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2025-03-08 08:48:31,779 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-08 08:48:31,974 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 08:48:31,974 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 08:48:31,974 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 08:48:31,974 INFO L85 PathProgramCache]: Analyzing trace with hash -1926026653, now seen corresponding path program 1 times [2025-03-08 08:48:31,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-08 08:48:31,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2115425609] [2025-03-08 08:48:31,975 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 08:48:31,975 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 08:48:31,975 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 08:48:31,977 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 08:48:31,977 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-08 08:48:32,058 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-08 08:48:32,082 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-08 08:48:32,082 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 08:48:32,082 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 08:48:32,087 INFO L256 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 47 conjuncts are in the unsatisfiable core [2025-03-08 08:48:32,094 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 08:48:32,854 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 08:48:32,854 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 08:49:17,389 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 08:49:17,389 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-08 08:49:17,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2115425609] [2025-03-08 08:49:17,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2115425609] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 08:49:17,390 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-08 08:49:17,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2025-03-08 08:49:17,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307030491] [2025-03-08 08:49:17,390 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-08 08:49:17,391 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-08 08:49:17,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-08 08:49:17,391 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-08 08:49:17,391 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2025-03-08 08:49:17,391 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 10 states, 10 states have (on average 1.4) internal successors, (14), 10 states have internal predecessors, (14), 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) [2025-03-08 08:49:17,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 08:49:17,510 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2025-03-08 08:49:17,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-08 08:49:17,511 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.4) internal successors, (14), 10 states have internal predecessors, (14), 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 8 [2025-03-08 08:49:17,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 08:49:17,511 INFO L225 Difference]: With dead ends: 15 [2025-03-08 08:49:17,511 INFO L226 Difference]: Without dead ends: 13 [2025-03-08 08:49:17,511 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 10.3s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2025-03-08 08:49:17,512 INFO L435 NwaCegarLoop]: 4 mSDtfsCounter, 4 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 08:49:17,512 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 19 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 08:49:17,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2025-03-08 08:49:17,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2025-03-08 08:49:17,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 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) [2025-03-08 08:49:17,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2025-03-08 08:49:17,514 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 8 [2025-03-08 08:49:17,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 08:49:17,514 INFO L471 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2025-03-08 08:49:17,514 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.4) internal successors, (14), 10 states have internal predecessors, (14), 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) [2025-03-08 08:49:17,514 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2025-03-08 08:49:17,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2025-03-08 08:49:17,514 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 08:49:17,514 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2025-03-08 08:49:17,520 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-08 08:49:17,714 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 08:49:17,715 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 08:49:17,715 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 08:49:17,715 INFO L85 PathProgramCache]: Analyzing trace with hash -1791040441, now seen corresponding path program 2 times [2025-03-08 08:49:17,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-08 08:49:17,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [662385494] [2025-03-08 08:49:17,716 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 08:49:17,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 08:49:17,716 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 08:49:17,717 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 08:49:17,718 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-08 08:49:17,791 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 11 statements into 2 equivalence classes. [2025-03-08 08:49:17,838 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 11 of 11 statements. [2025-03-08 08:49:17,839 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-08 08:49:17,839 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 08:49:17,842 WARN L254 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 107 conjuncts are in the unsatisfiable core [2025-03-08 08:49:17,852 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 08:49:19,165 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-08 08:49:19,165 INFO L312 TraceCheckSpWp]: Computing backward predicates...